SMTR [CRANE]

DC/DC CONVERTERS 28 VOLT INPUT; DC / DC转换器, 28伏特的输入
SMTR
型号: SMTR
厂家: Crane Aerospace & Electronics.    Crane Aerospace & Electronics.
描述:

DC/DC CONVERTERS 28 VOLT INPUT
DC / DC转换器, 28伏特的输入

转换器 输入元件
文件: 总12页 (文件大小:248K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
FEATURES  
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
28 VOLT INPUT  
• Fully qualified to Class H or K  
• Radiation hardened  
• –55° to +125°C operation  
• 16 to 40 VDC input  
• Fully Isolated  
• Magnetic feedback  
MODELS  
VDC OUTPUT  
• Fixed frequency, 600 kHz typical  
Topology – Single Ended Forward  
• Inhibit function  
SINGLE  
DUAL  
±5  
3.3  
5
12  
15  
• Sync function  
±12  
±15  
• Indefinite short circuit protection  
• Up to 30 watts output power  
• Trim function on single  
Size (max.): Non-flanged Case: H2 2.125 x 1.125 x 0.400 inches (53.98 x 28.58 x 10.16 mm)  
Flanged Case: K3 2.910 x 1.125 x 0.400 inches (73.79 x 28.58 x 10.16 mm)  
See Figures 22 through 25 for dimensions.  
output models  
• Up to 81% efficiency  
Weight:  
Non-flanged 52 grams max., flanged 55 grams max.  
Screening: Space prototype, Class H, or Class K (MIL-PRF-38534)  
Radiation hardness levels O or R  
DESCRIPTION  
The SMTR Series™ of 28 volt DC/DC converters offers up to  
30 watts of output power from single or dual output configurations.  
The operate over the full military temperature range of –55°C to  
+125°C with up to 84% efficiency. SMTR converters are packaged  
in hermetically sealed metal enclosures, making them ideal for use  
in military, aerospace and other high reliability applications.  
SYNCHRONIZATION  
Synchronizing the converter with the system clock allows the  
designer to confine switching noise to clock transitions, minimizing  
interference and reducing the need for filtering. In sync mode, the  
converter will run at any frequency between 500 kHz and 675 kHz.  
The sync control operates with a quasi-TTL signal at any duty cycle  
between 40% and 60%. The sync pin should be connected to input  
common pin when not in use.  
SCREENING AND REPORTS  
SMTR converters offer three screening options (Standard, Class H,  
or Class K) and two levels of radiation hardness (O or R). See  
Tables 1, 2, and 3 for more information. Detailed reports on product  
performance are also available and are listed in Table 4.  
WIDE VOLTAGE RANGE  
SMTR converters are designed to provide full power operation over  
a full 16 to 40 Vdc voltage range. Operation below 16 volts,  
including MIL-STD-704D emergency power conditions is possible  
with derated power.  
CONVERTER DESIGN  
The SMTR converters are constant frequency, pulse-width mod-  
ulated switching regulators which use a quasi-square wave, single  
ended, forward converter design. Tight load regulation is maintained  
by using a wide bandwidth magnetic feedback and, on single output  
models, through use of remote sense. On dual output models, the  
positive output is independently regulated and the negative output is  
cross regulated through the use of tightly coupled magnetics.  
IMPROVED DYNAMIC RESPONSE  
The SMTR Series feed-forward compensation system provides  
excellent dynamic response and noise rejection. Audio rejection is  
typically 50 dB. The min. to max. step line transient response is typi-  
cally less than 4%.  
INHIBIT FUNCTION  
Indefinite short circuit protection and overload protection are  
provided by a constant current-limit feature. This protective system  
senses current in the converter’s secondary stage and limits it to  
approximately 115% of the maximum rated output current.  
SMTR converters provide an inhibit terminal that can be used to  
disable internal switching, resulting in no output and very low  
quiescent input current. The converter is inhibited when a TTL  
compatible low (0.8V) is applied to the inhibit pin. The unit is  
enabled when the pin, which is internally connected to a pull-up  
resistor, is left unconnected or is connected to an open-collector  
gate. The open circuit output voltage associated with the inhibit pin  
is 9 to 11 Vdc. In the inhibit mode, a maximum of 8 mA must be sunk  
from the inhibit pin.  
SMTR converters are provided with internal filtering capacitors that  
help reduce the need for external components in normal operation.  
For systems that require compliance with MIL-STD-461C’s CE03  
standard, Interpoint offers filter/transient suppression modules  
(including the FMC-461, FMD-461 and FM-704A series filters) which  
will result in compliance. For the lowest noise performance, connec-  
tion of the case to input common is recommended. The connection  
can be hard-wired or AC coupled with a small ceramic bypass  
capacitor.  
®
1
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
SYNC AND INHIBIT  
ABSOLUTE MAXIMUM RATINGS  
TYPICAL CHARACTERISTICS  
Sync (500 to 675 kHz)  
• Duty cycle 40% min, 60% max  
• Logic low 0.8 V max  
• Logic high 4.5 V min, 5 V max  
• Referenced to input common  
• If not used, connect to input common  
Inhibit TTL Open Collector  
• Logic low (output disabled)  
Voltage 0.8 V  
Input Voltage  
• 16 to 40 VDC  
Output Power  
• 25 to 30 watts depending on model  
Lead Soldering Temperature (10 sec per pin)  
• 300°C  
Storage Temperature Range (Case)  
• –65°C to +135°C  
Output Voltage Temperature Coefficient  
• 100 ppm/°C typical single and dual outputs  
• 200 ppm/°C main, 300 ppm/°C aux  
triple output  
Input to Output Capacitance  
• 50 pF typ (100 pF typ triple outputs)  
Current Limit  
• 115% of full load typical  
Isolation  
• 100 megohm minimum at 500 V  
Audio Rejection  
• 40 dB typ (50 dB typ triple output)l  
Conversion Frequency  
Inhibit pin current 8.0 mA max  
RECOMMENDED OPERATING CONDITIONS  
Input Voltage Range  
• 16 to 40 VDC continuous  
• 50 V for 50 msec transient  
Case Operating Temperature (Tc)  
• –55°C to +125°C full power  
• –55°C to +135°C absolute  
Derating Output Power/Current  
• Linearly from 100% at 125°C to 0% at 135°C  
• Referenced to input common  
• Logic high (output enabled)  
Open collector  
• Free run 550 min, 600 typ, 650 max kHz  
• External sync 500 to 675 kHz  
Inhibit Pin Voltage (unit enabled)  
• 9 to 11 V  
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.  
SINGLE OUTPUT MODELS  
PARAMETER  
SMTR283R3S  
SMTR2805S  
SMTR2812S  
SMTR2815S  
CONDITION  
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX  
UNITS  
VDC  
A
OUTPUT VOLTAGE  
1
3.27 3.30 3.33 4.95 5.00 5.05 11.88 12.00 12.12 14.85 15.00 15.15  
OUTPUT CURRENT  
V
V
= 16 to 40 VDC  
= 16 to 40 VDC  
0
0
––  
5.45  
18  
0
0
5.0  
25  
0
0
2.5  
30  
0
0
2.0  
30  
IN  
1
OUTPUT POWER  
W
IN  
OUTPUT RIPPLE  
VOLTAGE  
10 kHz – 2 MHz  
15  
40  
50  
35  
50  
40  
90  
25  
40  
40  
90  
25  
40  
40  
90  
mV p-p  
Tc = 55°C TO +125°C  
Vin = 16 to 40 VDC  
Tc = 55°C TO +125°C  
NO LOAD TO FULL  
Tc = 55°C TO +125°C  
CONTINUOUS  
2
LINE REGULATION  
20  
15  
50  
15  
50  
15  
50  
mV  
LOAD REGULATION  
16  
28  
20  
40  
50  
16  
15  
28  
50  
40  
50  
16  
15  
28  
50  
40  
50  
16  
15  
28  
50  
40  
50  
mV  
VDC  
V
1
INPUT VOLTAGE  
NO LOAD TO FULL  
TRANSIENT 50 ms  
1
INPUT CURRENT  
NO LOAD  
FULL LOAD  
30  
0.94  
7
75  
8
35  
1.15  
3
75  
8
35  
1.30  
3
75  
8
35  
1.25  
3
75  
8
mA  
A
INHIBITED  
mA  
INPUT RIPPLE  
10 kHz – 10 MHz  
Tc = 55°C TO +125°C  
3
CURRENT  
25  
76  
50  
20  
78  
50  
20  
83  
50  
20  
84  
50  
mA p-p  
%
EFFICIENCY  
74  
74  
78  
79  
4
LOAD FAULT  
SHORT CIRCUIT  
POWER DISSIPATION  
10  
6
10  
5
10  
5
10  
5
W
1, 5  
RECOVERY  
1.4  
1.4  
1.4  
1.4  
ms  
STEP LOAD RESP.  
STEP LINE RESP.  
50% – 100% – 50%  
TRANSIENT  
±125 ±250  
±200 ±300  
60 200  
±250 ±400  
60 200  
±350 ±500  
60 200  
mV pk  
µs  
5
RECOVERY  
200  
16 – 40 – 16 VDC  
6
TRANSIENT  
±300  
300  
±200 ±300  
±400 ±500  
±500 ±600  
mV pk  
µs  
5
RECOVERY  
300  
5
300  
5
300  
5
1
START-UP  
DELAY  
1.4  
5
1.4  
1.4  
1.4  
ms  
OVERSHOOT  
FULL LOAD  
NO LOAD  
0
50  
0
50  
0
120  
0
150  
mV pk  
33  
150  
50  
250  
120 600  
150 750  
Notes  
1. Tc = 55°C to +125°C  
2. Operation is limited below 16V (see Figure 21).  
3. Tested with 3300 pF ceramic bypass capacitors connected externally from  
input common to case and output common to case.  
4. Indefinite short circuit protection not guaranteed above 125°C case.  
5. Recovery time is measured from application of the transient to point at which  
Vout is within 1% of final value.  
6. Transition time 10 µs.  
®
2
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, radiation level O, unless otherwise specified.  
DUAL OUTPUT MODELS  
PARAMETER  
SMTR2805D  
SMTR2812D  
MIN TYP  
SMTR2815D  
MIN TYP  
CONDITIONS  
MIN  
TYP  
MAX  
MAX  
MAX  
UNITS  
OUTPUT VOLTAGE  
+V  
–V  
4.95  
4.92  
0
5.00  
5.05 11.88 12.00 12.12 14.85 15.00 15.15  
OUT  
VDC  
5.00  
2.5  
5.08 11.82 12.00 12.18 14.77 15.00 15.23  
OUT  
1, 2  
OUTPUT CURRENT  
V
V
= 16 TO 40 VDC  
= 16 TO 40 VDC  
4.5  
0
1.25  
2.25  
0
1.0  
1.8  
A
IN  
IN  
1, 2  
OUTPUT POWER  
0
20  
40  
25  
50  
80  
0
30  
40  
30  
80  
0
25  
40  
30  
80  
W
OUTPUT RIPPLE  
10 kHz - 2 MHz  
Tc = 55°C TO +125°C  
mV p-p  
VOLTAGE +/– V  
OUT  
120  
120  
3
LINE REGULATION  
Tc = 55°C  
TO +125°C  
Tc = –55°C  
TO +125°C  
+V  
–V  
+V  
–V  
10  
50  
5
50  
100  
50  
10  
50  
15  
30  
4
50  
150  
50  
10  
50  
15  
30  
3
50  
180  
50  
180  
8
OUT  
OUT  
OUT  
OUT  
mV  
mV  
%
V
= 16 TO 40 VDC  
IN  
LOAD REGULATION  
NO LOAD TO FULL  
CROSS REGULATION  
25  
7
100  
12  
180  
8.3  
6
SEE NOTE 4  
SEE NOTE 5  
EFFECT ON –V  
OUT  
4
6
4
4
6
1
INPUT VOLTAGE  
CONTINUOUS  
TRANSIENT 50 ms  
NO LOAD  
16  
0
28  
40  
50  
75  
8
16  
0
28  
40  
50  
75  
8
16  
0
28  
40  
50  
75  
8
VDC  
V
NO LOAD TO FULL  
INPUT CURRENT  
35  
50  
50  
mA  
A
FULL LOAD  
1.10  
3
1.34  
3
1.29  
3
INHIBITED  
mA  
INPUT RIPPLE  
1, 6  
CURRENT  
10 kHz - 10 MHz  
15  
76  
50  
20  
80  
50  
20  
81  
50  
mA p-p  
%
EFFICIENCY  
74  
77  
78  
7
LOAD FAULT  
POWER DISSIPATION  
1
SHORT CIRCUIT  
10  
10  
10  
W
RECOVERY  
50 – 100 – 50% BALANCED  
TRANSIENT  
1.4  
5.0  
1.4  
5.0  
1.4  
5.0  
ms  
STEP LOAD  
RESPONSE ± V  
OUT  
±200  
100  
±300  
200  
±150  
100  
±300  
200  
±200  
100  
±400  
200  
mV pk  
µs  
8
RECOVERY  
STEP LINE  
16 – 40 – 16 V  
IN  
TRANSIENT  
9
RESPONSE ± V  
OUT  
±200  
±400  
±200  
±400  
±400  
±500  
mV pk  
8
RECOVERY  
300  
5
300  
5
300  
5
µs  
1
START–UP  
DELAY  
1.4  
1.4  
1.4  
ms  
OVERSHOOT  
FULL LOAD  
NO LOAD  
0
180  
250  
0
120  
600  
0
150  
750  
mV pk  
50  
120  
150  
Notes  
1. Tc = 55°C to +125°C.  
2. Up to 90% of the total output current/power is available from either output  
providing the positive output is carrying at least 10% of the total output  
power.  
5. Effect on the negative output under the following conditions:  
+P 50%; –P 10% to 50%  
out  
out  
6. Tested with 3300 pF ceramic bypass capacitors connected externally from  
input common to case and output common to case  
7. Indefinite short circuit protection not guaranteed above 125°C case.  
8. Recovery time is measured from application of the transient to point at which  
Vout is within 1% of final value.  
3. Operation is limited below 16 V (see Figure 21).  
4. Effect on the negative output under the following conditions:  
+P 20% to 80%; –P 80% to 20%  
out  
out  
9. Transition time 10 µs.  
®
3
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
TRIM AND REMOTE SENSE (AVAILABLE ON SINGLE OUTPUT MODELS ONLY)  
SMTR SINGLE OUTPUT CONVERTER  
SMTR SINGLE OUTPUT CONVERTER  
1
4
1
4
OUTPUT  
COMMON  
OUTPUT  
COMMON  
+V  
+V  
IN  
IN  
1
SENSE  
2
2
SENSE  
RETURN  
3
6
RETURN  
3
6
R
R
L
L
SENSE  
1
SENSE  
R
T
INPUT  
COMMON  
POSITIVE  
OUTPUT  
INPUT  
COMMON  
POSITIVE  
OUTPUT  
10  
5
10  
5
EXTERNAL TRIM CONNECTION  
REMOTE SENSE CONNECTION  
2 Make connections at load.  
1
Make connections at converter.  
2, 3  
1, 2, 3  
FIGURE 2: REMOTE SENSE  
FIGURE 1: TRIM CONNECTION  
Trim Formulas  
Notes for Remote Sense and Trim  
1. When trimming output voltage and/or remote sensing, the total output  
voltage increase must be less than 0.6 volts at the converters pins to  
maintain specified performance.  
2. If neither voltage trim nor remote sense will be used, connect pin 3 to  
pin 4 and pin 5 to pin 6 or the output voltage will increase by 1.2 volts.  
3. CAUTION: The converter will be permanently damaged if the positive  
remote sense (pin 6) is shorted to ground. Damage may also result if  
the output common or positive output is disconnected from the load with  
the remote sense leads connected to the load.  
Vout = desired output voltage; Rt = trim resistor  
3.3V: Rt = 1300 Vout – 4304  
*
1.2475  
5V: Rt = 1300 Vout – 6512  
*
1.2475  
12V: Rt = 1300 Vout – 15631  
*
1.2475  
15V: Rt = 1300 Vout – 19498  
*
1.2475  
PIN OUT  
Pin  
1
Single Output  
Positive Input  
Inhibit  
Dual Output  
Positive Input  
Inhibit  
Dot on top of cover indicates pin one.  
2
3
Sense Return  
Positive Output  
1
2
3
4
5
4
Output Common Output Common  
BOTTOM VIEW  
SMTR SINGLE  
FLANGED AND NON-FLANGED  
5
Positive Output  
Positive Sense  
Case Ground  
Case Ground  
Sync  
Negative Output  
Case Ground  
Case Ground  
Case Ground  
Sync  
6
7
10  
9
8
7
6
8
9
10  
Input Common  
Input Common  
Dotted line outlines flanged package option.  
See Figures 22 and 23 and for dimensions.  
FIGURE 3: PIN OUT SINGLE OUTPUT MODELS  
Dot on top of cover indicates pin one.  
1
2
3
4
5
BOTTOM VIEW  
SMTR DUAL  
FLANGED AND NON-FLANGED  
10  
9
8
7
6
Dotted line outlines flanged package option.  
See Figures 24 and 25 for dimensions.  
FIGURE 4: PIN OUT DUAL OUTPUT MODELS  
®
4
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
SMD NUMBERS  
STANDARD MICROCIRCUIT  
DRAWING (SMD)  
MTR SERIES  
SIMILAR PART  
MODEL NUMBERING KEY  
5962-0150102HXC  
5962-9306802HXC  
5962-9306902HXC  
5962-9307002HXC  
IN PROCESS  
SMTR283R3S/HO  
SMTR2805S/HO  
SMTR2812S/HO  
SMTR2815S/HO  
SMTR2805D/HO  
SMTR2812D/HO  
SMTR2815D/HO  
SMTR 28 05  
S
F
/
K
R
Base Model  
Input Voltage  
Output Voltage  
IN PROCESS  
IN PROCESS  
Number of Outputs  
(S = single, D = dual)  
Case Option  
(Non-flanged case has no designator  
in this position)  
To indicate the flanged case option change the “X” to “Z” In the  
SMD number. The SMD number shown is for Class  
H
screening, non-flanged, and no Radiation Hardness Assurance  
(RHA) level. See the SMD for the numbers for other screening  
and radiation levels. For exact specifications for an SMD  
product, refer to the SMD drawing. Call your Interpoint repre-  
sentative for status on the SMTR SMD releases which are “in  
process.” SMDs can be downloaded from  
Screening  
Radiation Level  
http://www.dscc.dla.mil/programs/smcr  
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.  
87  
82  
77  
72  
67  
62  
85  
80  
75  
70  
65  
60  
85  
80  
75  
70  
65  
60  
16V  
16V  
16V  
28V  
28V  
28V  
40V  
40V  
40V  
5
10  
15  
20  
25  
5
10  
15  
20  
25  
5
10  
15  
20  
OUTPUT POWER (Watts)  
OUTPUT POWER (Watts)  
OUTPUT POWER (Watts)  
SMTR2815S EFFICIENCY  
SMTR2805S EFFICIENCY  
SMTR2812S EFFICIENCY  
FIGURE 5  
FIGURE 6  
FIGURE 7  
85  
80  
75  
70  
65  
60  
90  
85  
80  
75  
70  
65  
16V  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
28V  
16V  
28V  
40V  
40V  
10  
5
15  
20  
5
10  
15  
20  
0.1  
1
10  
100  
OUTPUT POWER (Watts)  
SMTR2812D EFFICIENCY  
FREQUENCY (kHz)  
OUTPUT POWER (Watts)  
SMTR2815D EFFICIENCY  
AUDIO REJECTION, SMTR SERIES  
FIGURE 8  
FIGURE 9  
FIGURE 10  
®
5
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
Typical Performance Curves: 25°C Tc, 28 VDC Vin, 100% load, free run, unless otherwise specified.  
25W to 12.5W  
25W to 2.5W  
V
IN  
V
2.5W to 25W  
OUT  
12.5W to 25W  
50µs/div  
50% 100%  
50µs/div  
16 TO 40V  
50µs/div  
10% 100%  
SMTR2805S STEP LOAD RESPONSE  
SMTR2805S STEP LINE RESPONSE  
SMTR2805S STEP LOAD RESPONSE  
FIGURE 11  
FIGURE 12  
FIGURE 13  
–P  
OUT  
=15W  
V
IN  
V
IN  
15W to 7.5W  
7.5W to 15W  
+V  
OUT  
V
OUT  
–V  
OUT  
500 µs / div  
50µs/div  
25% 50%  
50µs/div  
16 TO 40  
SMTR2805S TURN-ON INTO NO LOAD  
SMTR2815D +V  
STEP LOAD RESPONSE  
SMTR2815D STEP LINE RESPONSE  
OUT  
FIGURE 14  
FIGURE 15  
FIGURE 16  
10  
9
8
7
2812D  
2805D  
6
5
4
3
V
2
IN  
15W to 3W  
3W to 15W  
50µs/div  
2815D  
1
0
+V  
OUT  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
2815D  
–V  
OUT  
2812D  
2805D  
+P  
–P  
0
3
6
9
12 15 18 21 24 27 30  
OUT  
OUT  
30 27 24 21 18 15 12  
9
6
3
0
200µs/div  
10%  
100%  
OUTPUT LOAD (Watts)  
10% to 90% LOAD +V  
90% to 10% LOAD –V  
CROSS REGULATION  
SMTR2815D TURN-ON INTO NO LOAD  
SMTR2815D +V  
STEP LOAD RESPONSE  
OUT  
FIGURE 17  
FIGURE 18  
FIGURE 19  
16.0  
8
7
6
5
4
3
2
1
0
–1  
–2  
–3  
–4  
–5  
–6  
–7  
–8  
15.5  
15.0  
14.5  
14.0  
13.5  
13.0  
2812D  
2805D  
COND A  
2815D  
COND B  
2805D  
2812D  
9
12  
15  
18 21 24  
27 30  
10  
20  
30  
40  
50  
OUTPUT POWER (Watts)  
1% DROP  
SMTR SINGLES AND DUALS  
LOW LINE DROPOUT  
OUTPUT LOAD (%)  
COND. B: 50% LOAD +V, 50% to 10% –V  
COND. A: 50% LOAD –V, 50% to 10% +V  
CROSS REGULATION  
FIGURE 20  
FIGURE 21  
®
6
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
Materials  
Header Cold Rolled Steel/Nickel/Gold  
Dot on top of case indicates pin one  
case H2  
Cold Rolled Steel/Nickel/Tin  
case H4  
Cover Kovar/Nickel  
CASE H  
BOTTOM VIEW  
See Figure 23 for pin configurations.  
case H2  
Cold Rolled Steel/Nickel/Tin  
case H4  
1.125 max  
(28.58)  
Pins  
#52 alloy  
ceramic seal  
case H1  
compression glass seal  
case H4  
2.125 max  
(53.98)  
Case dimensions in inches (mm)  
Tolerance ±0.005 (0.13) for three decimal places  
±0.01 (0.3) for two decimal places  
unless otherwise specified  
CAUTION  
Heat from reflow or wave soldering may damage  
the device. Solder pins individually with heat  
application not exceeding 300°C for 10 seconds  
per pin.  
FIGURE 22: CASE H MAXIMUM DIMENSIONS  
BOTTOM VIEW CASE H2  
SMTR Series Single  
SMTR Series Dual  
Squared corner and dot on top  
of case indicate pin one.  
Seam Seal  
Platform  
1.110 (28.19)  
0.955 (24.26)  
1
2
3
4
5
0.040 dia  
(1.02)  
SMTR Series Dual  
10  
9
8
7
6
0.155 (3.94)  
0.000  
Squared corner and dot on top  
of case indicate pin one.  
1.110 (28.19)  
0.955 (24.26)  
1
2
3
4
5
SMTR Series Single  
10  
9
8
7
6
0.155 (3.94)  
0.000  
FIGURE 23: CASE H2  
Note: Although every effort has been made to render the case drawings at actual size, variations in the printing process may cause some distortion. Please refer  
to the numerical dimensions for accuracy.  
®
7
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
Dot on top of case indicates pin one  
CASE K  
BOTTOM VIEW  
See Figures 40 and 41  
for pin configuration  
1.125 max  
(28.58)  
2.910 max  
(73.91)  
Flange Thickness:  
Case K3 0.060 (1.52)  
Case K5 0.067 +0.005/-0.007 (1.70 +0.13/-0.8)  
Materials  
Header Case K3  
Cold Rolled Steel/Nickel/Gold  
Case K8  
Cold Rolled Steel/Nickel/Tin  
Cover Case K3  
Kovar/Nickel  
Case K8  
Cold Rolled Steel/Nickel/Tin  
Pins  
#52 alloy (all cases)  
Case K3  
ceramic seal  
Case K8  
compression glass seal  
Case dimensions in inches (mm)  
Tolerance ±0.005 (0.13) for three decimal places  
±0.01 (0.2) for two decimal places  
unless otherwise specified  
CAUTION  
Heat from reflow or wave soldering may damage  
the device. Solder pins individually with heat  
application not exceeding 300°C for 10 seconds  
per pin.  
FIGURE 24: CASE K MAXIMUM DIMENSIONS  
®
8
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
BOTTOM VIEW CASE K3  
Flanged cases: Designator "F" required in Case Option position of model number.  
SMTR Series Single  
SMTR Series Dual  
Platform Header  
Dot on top of case indicates pin one  
1.110 (28.19)  
Seam Seal  
0.955 (24.26)  
1
2
3
4
5
0.040 dia  
(1.02)  
0.162 dia  
(4.11)  
SMTR Series Dual  
0.555 (14.1)  
10  
9
8
7
6
0.155 (3.94)  
0.000  
Platform Header  
Seam Seal  
Dot on top of case indicates pin one  
1.110 (28.19)  
0.955 (24.26)  
1
2
3
4
5
0.040 dia  
(1.02)  
0.162 dia  
(4.11)  
0.555 (14.1)  
SMTR Series Single  
10  
9
8
7
6
0.155 (3.94)  
0.000  
FIGURE 25: CASE K3  
®
9
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
TABLE 1: ELEMENT EVALUATION  
ELEMENT EVALUATION  
SPACE  
PROTOTYPE CLASS  
CLASS  
K
TEST PERFORMED  
(O)  
H
(COMPONENT LEVEL)  
M/S  
yes  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
P
M/S  
P
M/S  
P
Element Electrical  
no yes yes yes  
no yes yes yes  
yes  
yes  
no  
Element Visual  
Internal Visual  
no yes  
no yes  
no yes  
no yes  
no yes  
no yes  
no yes  
no yes  
no no  
no no  
Temperature Cycling  
Constant Acceleration  
Interim Electrical  
Burn-in  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
no  
yes  
yes  
no  
no  
Post Burn-in Electrical  
Steady State Life  
Voltage Conditioning /Aging  
Visual Inspection  
Final Electrical  
no  
no  
yes  
yes  
yes  
yes  
no  
no yes yes yes  
no yes yes yes  
Wire Bond Evaluation  
SEM  
no  
no  
no yes  
SLAM™/C-SAM:  
Input capacitors only  
(Add’l test, not req. by H or K)  
no  
no  
no  
yes no  
yes  
Notes  
M/S Active components (Microcircuit and Semiconductor Die)  
Passive components  
P
Definitions  
Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534  
SEM: Scanning Electron Microscopy  
SLAM™: Scanning Laser Acoustic Microscopy  
C-SAM: C - Mode Scanning Acoustic Microscopy  
®
10  
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
TABLE 2: PRODUCT ENVIRONMENTAL SCREENING  
ENVIRONMENTAL SCREENING  
SPACE  
PROTOTYPE  
(O)  
TEST PERFORMED  
(END ITEM LEVEL)  
Non-destruct bond pull  
Method 2023  
Pre-cap inspection  
Method 2017, 2032  
Temperature cycle  
Method 1010, Cond. C  
Constant acceleration  
Method 2001, 3000 g  
PIND Test  
CLASS  
H
CLASS  
K
no  
yes  
yes  
yes  
no  
no  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
Method 2020, Cond. B  
Radiography  
Method 2012  
Pre burn-in test  
no  
yes  
no  
yes  
yes  
yes  
Burn-in, Method 1015, 125°C  
96 hours  
160 hours  
2 x 160 hour (includes mid BI test)  
Final electrical test  
MIL-PRF-38534, Group A  
Hermeticity test  
yes  
no  
no  
no  
yes  
no  
no  
no  
yes  
yes  
yes  
yes  
Fine Leak,  
Method 1014, Cond. A  
Gross Leak,  
Method 1014, Cond. C  
Final visual inspection  
Method 2009  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
yes  
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.  
®
11  
SMTR SERIES  
30 WATT  
DC/DC CONVERTERS  
TABLE 3: RADIATION HARDNESS LEVELS  
PRODUCT LEVEL AVAILABILITY  
ENVIRONMENTAL SCREENING LEVELS  
SPACE  
PROTOTYPE  
(O)  
CLASS  
H
CLASS  
K
RADIATION HARDNESS LEVELS  
O: Standard, no radiation guarantee  
For system evaluation, electrically  
and mechanically comparable to  
H and K level.  
R: Radiation hardened – Tested lots  
Up to 100 k Rads (Si) total dose  
SEU guarantee up to 40 MeV  
Not  
available  
OO  
HO  
HR  
Not  
available  
KR  
R is referenced to MIL-PRF-38534, appendix G, Radiation Hardness Assurance  
(RHA) levels.  
Contact Information:  
www.interpoint.com  
Interpoint Headquarters USA  
Phone: 1-800-822-8782  
+425-882-3100  
Interpoint UK  
Phone: +44-1252-872266  
Interpoint France  
Phone: +33-134285455  
Email:  
poweruk@intp.com  
Email:  
powerfr@intp.com  
Email:  
power@intp.com  
SMTR Rev E August 24, 2005 (case to input common). This revision supercedes all  
previous releases. All technical information is believed to be accurate, but no responsi-  
bility is assumed for errors or omissions. Interpoint reserves the right to make changes  
in products or specifications without notice. SMTR Series is a trademark of Interpoint.  
Copyright © 1994 - 2005 Interpoint. All rights reserved.  
®
12  

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