ESDA18-1F2 [STMICROELECTRONICS]
Transient Voltage Suppressor; 瞬态电压抑制器
| 型号： | ESDA18-1F2 |
| 厂家： | 
ST |
| 描述： | Transient Voltage Suppressor |
| 文件： | 总7页 (文件大小：91K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ESDA18-1F2
®
ASD
(Application Specific Devices)
TRANSIL™: Transient Voltage Suppressor
FEATURES AND BENEFITS:
■
■
■
Stand-off voltage 16V
Unidirectional device
Low clamping factor VCL/VBR
■
■
Fast response time
Very thin package: 0.65 mm
Flip-Chip
(4 Bumps)
DESCRIPTION
The ESDA18-1F2 is a single line Transil diode
designed specifically for the protection of
integrated circuits into portable equipment and
miniaturized electronics devices subject to ESD &
EOS transient overvoltages.
Table 1: Order Code
Part Number
Marking
ESDA18-1F2
EE
COMPLIES WITH THE FOLLOWING STANDARDS:
IEC61000-4-2
Figure 1: Pin Configuration (ball side)
Level 4
15kV (air discharge)
8kV (contact discharge)
A
B
1
2
K
K
A
A
K
A
TM: TRANSIL is a trademark of STMicroelectronics.
May 2005
REV. 1
1/7
ESDA18-1F2
Table 2: Absolute Ratings (limiting value, per diode)
Symbol
Parameter and test conditions
Value
Unit
Peak pulse power dissipation
10 / 1000 µs pulse
100
PPP
Tj initial = Tamb
W
Peak pulse power dissipation
8 / 20 µs pulse
700
8
tp=10 ms
IFSM
Non repetitive surge peak forward current
A
Tj initial = Tamb
Tj
Maximum operating junction temperature
Storage temperature range
125
°C
°C
Tstg
- 65 to + 175
Table 3: Electrical Characteristics (Tamb = 25°C)
Symbol
Parameter
Breakdown voltage
I
IF
VBR
IRM
VRM
VCL
Rd
Leakage current
Stand-off voltage
Clamping voltage
Dynamic impedance
Peak pulse current
Capacitance
VF
V
CLVBR VRM
V
IRM
IPP
C
Slope: 1/Rd
IPP
(1)
(2)
IR
VBR
IRM
VRM
VCL
IPP
VF
αT
C
min.
max.
max.
max.
max.
max.
typ.
Part Number
IF = 850mA
VR=0V
10-4/°C
8.5
V
V
mA
1
µA
V
V
A
1
V
pF
ESDA18-1F2
(1) 8 / 20 µs pulse waveform.
16
18
0.5
10
20
1.3
230
(2) DC current not recommended for more than 5 sec. Even if Transil failure mode is short circuit the bumps could exceed melting temper-
ature and the component disassembled from the board.
2/7
ESDA18-1F2
Figure 2: Relative variation of peak pulse
power versus initial junction temperature
Figure 3: Peak pulse power versus exponen-
tial pulse duration
P
[T initial] / P [T initial=25°C)
j PP j
P (W)
PP
PP
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
10000
1000
100
Tj initial=25°C
T (°C)
j
t (µs)
p
10
0
25
50
75
100
125
150
1
10
100
1000
Figure 4: Clamping voltage versus peak pulse
current (typical values, exponential waveform)
Figure 5: Forward voltage drop versus peak
forward current (typical values)
I
(A)
I
(A)
FM
PP
100.0
10.0
1.0
1.E+01
1.E+00
1.E-01
1.E-02
1.E-03
8/20µs
Tj initial=25°C
Tj=125°C
Tj=25°C
V
(V)
CL
V
(V)
FM
0.1
10
12
14
16
18
20
22
24
26
28
30
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Figure 6: Junction capacitance versus reverse
voltage applied (typical values)
Figure 7: Relative variation of leakage current
versus junction temperature (typical values)
C(pF)
I [T ] / I [T =25°C]
R j R j
300
100
10
1
VR=10V
F=1MHz
VOSC=30mVRMS
Tj=25°C
250
200
150
100
50
V (V)
R
T (°C)
j
0
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
25
50
75
100
125
3/7
ESDA18-1F2
One major point is that the ESDA18-1F2 has to ensure the safety during reverse battery operation. Indeed,
during this operation the device must clamp the DC reverse voltage below 1.3V @ 0.85A (max current).
Thus reverse battery operation has been simulated by inverting the polatrity of the TRANSIL (please see
figures 8 and 9)
Figure 8: Reverse battery operation setup
Equivalent
mobile phone
impedance
PTC
I
V
mains
4.7kΩ
1nF
V
ESDA18-1F2
Figure 9: Reverse battery operation results
A short calculation based on Reverse battery operation results figures clearly show that in such real phone
application the ESDA18-1F2 clamp the DC voltage below 1.3V.
Typically the ESDA18-1F2 can clamp the DC voltage @ 0.9V @0.76A DC current:
2 × Vmax
2 × 1.4
---------------------- -----------------
VDC
=
≈
≈ 0.9V
Π
3.14
2 × Imax
2 × 1.2
-------------------- -----------------
IDC
=
≈
≈ 0.76A
Π
3.14
4/7
ESDA18-1F2
Figure 10: Ordering Information Scheme
ESD Array
ESDA 18 - 1 Fx
Breakdown Voltage
18 = 18 Volts max.
Number of line
1 = signle line
Package
F = Flip-Chip
x = 2: Leadfree Pitch = 500µm, Bump = 315µm
Figure 11: FLIP-CHIP Package Mechanical Data
650µm 65
500µm 50
315µm 50
0.95mm 50µm
Figure 12: Foot Print Recommendations
Figure 13: Marking
365
240
Dot, ST logo
xx = marking
z = packaging location
yww = datecode
(y = year
Copper pad Diameter :
250µm recommended , 300µm max
E
ww = week)
Solder stencil opening : 330µm
x x z
Solder mask opening recommendation :
340µm min for 315µm copper pad diameter
y
w w
All dimensions in µm
5/7
ESDA18-1F2
Figure 14: FLIP-CHIP Tape and Reel Specification
Dot identifying Pin A1 location
Ø 1.5 +/- 0.1
4 +/- 0.1
ST
ST
ST
0.73 +/- 0.05
4 +/- 0.1
User direction of unreeling
All dimensions in mm
Table 4: Ordering Information
Ordering code
Marking
Package
Weight
Base qty
5000
Delivery mode
ESDA18-1F2
EE
Flip-Chip
1.25 mg
Tape & reel 7”
Note: More packing informations are available in the application note
AN1235: “Flip-Chip: Package description and recommendations for use”
Table 5: Revision History
Date
Revision
Description of Changes
09-May-2005
1
First issue.
6/7
ESDA18-1F2
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2005 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
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7/7
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