1SMB8.5AT3 [MOTOROLA]

PLASTIC SURFACE MOUNT ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS; 塑料表面贴装齐纳过电压瞬态抑制器


型号：	1SMB8.5AT3
厂家：	MOTOROLA
描述：	PLASTIC SURFACE MOUNT ZENER OVERVOLTAGE TRANSIENT SUPPRESSORS 塑料表面贴装齐纳过电压瞬态抑制器瞬态抑制器二极管光电二极管局域网
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MOTOROLA

SEMICONDUCTOR

TECHNICAL DATA

1SMB5.0AT3

SERIES

GENERAL DATA APPLICABLE TO ALL SERIES IN

THIS GROUP

600 WATT

Zener Transient Voltage Suppressors

PEAK POWER

The SMB series is designed to protect voltage sensitive components from high voltage,

high energy transients. They have excellent clamping capability, high surge capability, low

zener impedance and fast response time. The SMB series is supplied in Motorola’s

exclusive, cost-effective, highly reliable Surmetic package and is ideally suited for use in

communication systems, numerical controls, process controls, medical equipment,

business machines, power supplies and many other industrial/consumer applications.

PLASTIC SURFACE MOUNT

ZENER OVERVOLTAGE

TRANSIENT

SUPPRESSORS

6.8–200 VOLTS

600 WATT PEAK POWER

Specification Features:

• Standard Zener Breakdown Voltage Range — 6.8 to 200 V

• Stand-off Voltage Range — 5 to 170 V

• Peak Power — 600 Watts @ 1 ms

• Maximum Clamp Voltage @ Peak Pulse Current

• Low Leakage < 5 µA Above 10 V

• UL Recognition

• Response Time Typically < 1 ns

Mechanical Characteristics:

CASE: Void-free, transfer-molded, thermosetting plastic

FINISH: All external surfaces are corrosion resistant and leads are readily solderable

POLARITY: Cathode indicated by molded polarity notch. When operated in zener mode,

will be positive with respect to anode

CASE 403A

PLASTIC

MOUNTING POSITION: Any

LEADS: Modified L-Bend providing more contact area to bond pad

MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260°C for 10 seconds

WAFER FAB LOCATION: Phoenix, Arizona

ASSEMBLY/TEST LOCATION: Seremban, Malaysia

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Peak Power Dissipation (1)

600

Watts

@ T ≤ 25°C

Forward Surge Current (2)

100

Amps

FSM

@ T = 25°C

Thermal Resistance from Junction to Lead (typical)

Operating and Storage Temperature Range

°C/W

°C

T , T

– 65 to +150

stg

NOTES: 1. Nonrepetitive current pulse per Figure 2 and derated above T = 25°C per Figure 3.

NOTES: 2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.

REV 1

Motorola TVS/Zener Device Data

600 Watt Peak Power Data Sheet

5-1

GENERAL DATA — 600 WATT PEAK POWER

ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted).

Peak

Maximum

Breakdown Voltage*

Pulse Current

(See Figure 2)

Reverse

Stand-Off Voltage

Maximum

Clamping Voltage

Reverse Leakage

@ I

@ V

Volts

Min

Device

V @ I

C pp

Marking

Device

Amps

Volts (1)

Volts

µA

1SMB5.0AT3

1SMB6.0AT3

1SMB6.5AT3

1SMB7.0AT3

5.0

6.0

6.5

7.0

6.40

6.67

7.22

7.78

9.2

65.2

58.3

53.6

50.0

800

500

200

10.3

11.2

12.0

1SMB7.5AT3

1SMB8.0AT3

1SMB8.5AT3

1SMB9.0AT3

7.5

8.0

8.5

9.0

8.33

8.89

9.44

10.0

1.0

12.9

13.6

14.4

15.4

46.5

44.1

41.7

39.0

100

5.0

1SMB10AT3

1SMB11AT3

1SMB12AT3

1SMB13AT3

11.1

12.2

13.3

14.4

1.0

17.0

18.2

19.9

21.5

35.3

33.0

30.2

27.9

5.0

1SMB14AT3

1SMB15AT3

1SMB16AT3

1SMB17AT3

15.6

16.7

17.8

18.9

1.0

23.2

24.4

26.0

27.6

25.8

24.0

23.1

21.7

5.0

1SMB18AT3

1SMB20AT3

1SMB22AT3

1SMB24AT3

20.0

22.2

24.4

26.7

1.0

29.2

32.4

35.5

38.9

20.5

18.5

16.9

15.4

5.0

1SMB26AT3

1SMB28AT3

1SMB30AT3

1SMB33AT3

28.9

31.1

33.3

36.7

1.0

42.1

45.4

48.4

53.3

14.2

13.2

12.4

11.3

5.0

1SMB36AT3

1SMB40AT3

1SMB43AT3

1SMB45AT3

40.0

44.4

47.8

50.0

1.0

58.1

64.5

69.4

72.7

10.3

9.3

8.6

8.3

5.0

1SMB48AT3

1SMB51AT3

1SMB54AT3

1SMB58AT3

53.3

56.7

60.0

64.4

1.0

77.4

82.4

87.1

93.6

7.7

7.3

6.9

6.4

5.0

1SMB60AT3

1SMB64AT3

1SMB70AT3

1SMB75AT3

66.7

71.1

77.8

83.3

1.0

96.8

103

113

121

6.2

5.8

5.3

4.9

5.0

1SMB78AT3

1SMB85AT3

1SMB90AT3

1SMB100AT3

86.7

94.4

100

111

1.0

126

137

146

162

4.7

4.4

4.1

3.7

5.0

100

1SMB110AT3

1SMB120AT3

1SMB130AT3

1SMB150AT3

110

120

130

150

122

133

144

167

1.0

177

193

209

243

3.4

3.1

2.9

2.5

5.0

1SMB160AT3

1SMB170AT3

160

170

178

189

1.0

259

275

2.3

2.2

5.0

Note 1: A transient suppressor is normally selected according to the reverse ”Stand Off Voltage” (V ) which should be equal to or greater than the DC or continuous peak operating

voltage level.

* * V

measured at pulse test current I at an ambient temperaure of 25°C.

Surge current waveform per Figure 2 and derate per Figure 3 of the General Data — 600 Watt at the beginning of this group.

T3 suffix designates tape and reel of 2500 units.

ABBREVIATIONS AND SYMBOLS

Stand Off Voltage. Applied reverse voltage to assure a

non-conductive condition (See Note 1).

This is the minimum breakdown voltage the device will

exhibit and is used to assure that conduction does not

occur prior to this voltage level at 25°C.

subjected to the peak pusle current in a one millisecond

time interval. The peak pulse voltages are the combina-

tion of voltage rise due to both the series resistance and

thermal rise.

Peak Pulse Current — See Figure 2

Peak Pulse Power

(BR)min

MaximumClampingVoltage.Themaximumpeakvolt-

age appearing across the transient suppressor when

Reverse Leakage

Motorola TVS/Zener Device Data

600 Watt Peak Power Data Sheet

5-2

GENERAL DATA — 600 WATT PEAK POWER

100

PULSE WIDTH (t ) IS DEFINED

AS THAT POINT WHERE THE PEAK

CURRENT DECAYS TO 50%

NONREPETITIVE

PULSE WAVEFORM

SHOWN IN FIGURE 2

OF I

RSM

100

PEAK VALUE – I

≤

µs

RSM

HALF VALUE –

0.1

µs

100 µs

1 ms

10 ms

t , PULSE WIDTH

t, TIME (ms)

Figure 1. Pulse Rating

Curve

Figure 2. Pulse Waveform

160

140

120

TYPICAL PROTECTION CIRCUIT

100

LOAD

100

125

150

T , AMBIENT TEMPERATURE (

°C)

Figure 3. Pulse Derating Curve

APPLICATION NOTES

RESPONSE TIME

the suppressor device as close as possible to the equipment

or components to be protected will minimize this overshoot.

In most applications, the transient suppressor device is

placed in parallel with the equipment or component to be

protected. In this situation, there is a time delay associated

with the capacitance of the device and an overshoot condition

associated with the inductance of the device and the

inductance of the connection method. The capacitive effect is

ofminorimportanceintheparallelprotectionschemebecause

it only produces a time delay in the transition from the

operating voltage to the clamp voltage as shown in Figure 4.

The inductive effects in the device are due to actual turn-on

time (time required for the device to go from zero current to full

current) and lead inductance. This inductive effect produces

an overshoot in the voltage across the equipment or

component being protected as shown in Figure 5. Minimizing

this overshoot is very important in the application, since the

main purpose for adding a transient suppressor is to clamp

voltage spikes. The SMB series have a very good response

time, typically < 1 ns and negligible inductance. However,

external inductive effects could produce unacceptable over-

shoot. Propercircuitlayout, minimumleadlengthsandplacing

Some input impedance represented by Z is essential to

prevent overstress of the protection device. This impedance

should be as high as possible, without restricting the circuit

operation.

DUTY CYCLE DERATING

The data of Figure 1 applies for non-repetitive conditions

and at a lead temperature of 25°C. If the duty cycle increases,

the peak power must be reduced as indicated by the curves of

Figure 6. Average power must be derated as the lead or

ambient temperature rises above 25°C. The average power

derating curve normally given on data sheets may be

normalized and used for this purpose.

At first glance the derating curves of Figure 6 appear to be in

error as the 10 ms pulse has a higher derating factor than the

10 µs pulse. However, when the derating factor for a given

pulse of Figure 6 is multiplied by the peak power value of

Figure 1 for the same pulse, the results follow the expected

trend.

Motorola TVS/Zener Device Data

600 Watt Peak Power Data Sheet

5-3

GENERAL DATA — 600 WATT PEAK POWER

(TRANSIENT)

OVERSHOOT DUE TO

INDUCTIVE EFFECTS

(TRANSIENT)

= TIME DELAY DUE TO CAPACITIVE EFFECT

Figure 4.

Figure 5.

0.7

0.5

0.3

0.2

PULSE WIDTH

10 ms

0.1

0.07

0.05

1 ms

0.03

0.02

100 µs

µs

0.01

0.1

0.2

0.5

100

D, DUTY CYCLE (%)

Figure 6. Typical Derating Factor for Duty Cycle

UL RECOGNITION

The entire series has Underwriters Laboratory Recognition

for the classification of protectors (QVGV2) under the UL

standard for safety 497B and File #116110. Many competitors

only have one or two devices recognized or have recognition

in a non-protective category. Some competitors have no

recognition at all. With the UL497B recognition, our parts

successfully passed several tests including Strike Voltage

Breakdown test, Endurance Conditioning, Temperature test,

Dielectric Voltage-Withstand test, Discharge test and several

more.

Whereas, some competitors have only passed a flammabil-

ity test for the package material, we have been recognized for

much more to be included in their Protector category.

Motorola TVS/Zener Device Data

600 Watt Peak Power Data Sheet

5-4

GENERAL DATA — 600 WATT PEAK POWER

Transient Voltage Suppressors — Surface Mounted

600 Watt Peak Power

0.089

2.261

0.108

2.743

inches

0.085

2.159

SMB Footprint

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. D DIMENSION SHALL BE MEASURED WITHIN

DIMENSION P.

INCHES

MIN MAX

MILLIMETERS

DIM

MIN

4.06

3.30

1.90

1.96

0.051

0.15

0.76

MAX

4.57

3.81

2.41

2.11

0.152

0.30

1.27

0.160 0.180

0.130 0.150

0.075 0.095

0.077 0.083

0.0020 0.0060

0.006 0.012

0.030 0.050

0.020 REF

0.51 REF

CASE 403A

PLASTIC

0.205 0.220

5.21

5.59

(Refer to Section 10 for Surface Mount, Thermal Data and Footprint Information.)

MULTIPLE PACKAGE QUANTITY (MPQ)

REQUIREMENTS

Package Option

Type No. Suffix

MPQ (Units)

Tape and Reel

T3 (13 inch reel)

2.5K

(Refer to Section 10 for more information on Packaging Specifications.)

Motorola TVS/Zener Device Data

600 Watt Peak Power Data Sheet

5-5

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