SM8S24AHE3/2D Vishay, SM8S24AHE3/2D Datasheet

SM8S24AHE3/2D

Manufacturer Part Number

SM8S24AHE3/2D

Description

TVS 8W 24V 5% DO-218AB

Manufacturer

Vishay

Datasheets

1.SM8S18A-E32D.pdf (5 pages)

2.SM8S24AHE32D.pdf (4 pages)

Specifications of SM8S24AHE3/2D

Voltage - Reverse Standoff (typ)

24V

Voltage - Breakdown

26.7V

Power (watts)

Polarization

Unidirectional

Mounting Type

Surface Mount

Package / Case

DO-218AB

Polarity

Unidirectional

Clamping Voltage

38.9 V

Operating Voltage

24 V

Breakdown Voltage

26.7 V

Peak Surge Current

170 A

Peak Pulse Power Dissipation

6600 W

Maximum Operating Temperature

+ 175 C

Minimum Operating Temperature

- 55 C

Dimensions

8.7(Max) mm W x 13.7(Max) mm L

Reverse Stand-off Voltage Vrwm

24V

Breakdown Voltage Range

26.7V To 29.5V

Clamping Voltage Vc Max

38.9V

Diode Configuration

Unidirectional

Peak Pulse Current Ippm

170A

Diode Case Style

DO-218AB

No. Of Pins

Rohs Compliant

Yes

Power Dissipation Pd

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

HardFindElectronics Ltd

Part Number:

SM8S24AHE3/2D

Manufacturer:

VISHAY

Quantity:

300

Company:

H&T Electronics

Part Number:

SM8S24AHE3/2D

Quantity:

70 000

Company:

H&T Electronics

Part Number:

SM8S24AHE3/2D

Quantity:

70 000

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By Soo Man (Sweetman) Kim,

Senior Application Manager

A major challenge in automotive design is protecting

electronics - such as control units, sensors, and

entertainment systems - against damaging surges, voltage

transients, ESD, and noise that are present on the power

line. Transient voltage suppressors (TVS) are ideal solutions

for automotive electronic protection and have several

important parameters for these applications, including

power rating, stand-off voltage, breakdown voltage, and

maximum breakdown voltage. Following are definitions for

these parameters.

Power rating

The power rating of a TVS is its surge-absorbing capability

under specific test or application conditions. The industrial-

standard test condition of 10 μs/1000 μs pulse form

(Bellcore 1089 spec.), as shown in Figure 1. This test

condition differs from the TVS ESD test condition of

8 μs/20 μs pulse form, as shown in Figure 2.

Document Number: 88490

Revision: 09-Aug-10

Transient Voltage Suppressors

100 %

50 %

0 %

Transient Voltage Suppressors (TVS) for

10 µs

Fig. 1 - Test Waveform of TVS

PPM

0.5

Automotive Electronic Protection

DiodesAmericas@vishay.com, DiodesAsia@vishay.com,

V I S H A Y G E N E R A L S E M I C O N D U C T O R

1.0

For technical questions within your region, please contact one of the following:

PPM

1.5

10 μs/1000 μs

2.0

(ms)

2.5

Breakdown Voltage (V

The breakdown voltage is the voltage at which the device

goes into avalanche breakdown, and is measured at a

specified current on the datasheet.

Maximum Breakdown Voltage (V

The clamping voltage appears across the TVS at the

specified peak pulse current rating. The breakdown voltage

of a TVS is measured at a very low current, such as 1 mA

or 10 mA, which is different from the actual avalanche

voltage in application conditions. Thus, semiconductor

manufactures specify the typical or maximum breakdown

voltage in large current.

Stand-Off Voltage (V

Voltage

The stand-off voltage indicates the maximum voltage of the

TVS when not in breakdown, and is an important parameter

of protection devices in circuits that do not operate under

normal conditions. In automotive applications, some

regulation of the automotive electronics is provided by

“jump-start protection”. This condition supplies 24 V

10 min to 12 V type electronics, and 36 V

24 V type electronics without damage or malfunction of the

circuit. Thus, the stand-off voltage is one of the key

parameters in TVS for automotive electronics.

100 %

50 %

0 %

DiodesEurope@vishay.com

Fig. 2 - Test Waveform of TVS ESD

8 μs

)

): Working Stand-Off Reverse

PPM

Application Note

: Clamping Voltage)

8 μs/20 μs

www.vishay.com

in 10 min to

(μs)

PPM

Related parts for SM8S24AHE3/2D

SM8S24AHE3/2D Summary of contents

Page 1

... Fig Test Waveform of TVS Document Number: 88490 For technical questions within your region, please contact one of the following: Revision: 09-Aug-10 DiodesAmericas@vishay.com, DiodesAsia@vishay.com, 8 μs 100 % Fig Test Waveform of TVS ESD Breakdown Voltage (V The breakdown voltage is the voltage at which the device goes into avalanche breakdown, and is measured at a specified current on the datasheet ...

Page 2

... Application Note Vishay General Semiconductor Transient Voltage Suppressors (TVS) for Automotive Electronic Protection PRIMARY PROTECTION OF THE AUTOMOTIVE POWER LINE (LOAD DUMP) Automotive electronics, such as electronic control units, sensors, and entertainment systems, are connected to one power line. The power sources for these electronics are the ...

Page 3

... V : Clamping voltage Line impedance i Figure 6a shows the current and voltage waveforms of Vishay’s SM5S24A in the ISO 7637-2 test 0.75 Ω and 400 ms pulse width. batt. i Fig Clamped Voltage and Current of SM5A24A in ISO 7637-2 Test Figure 6b shows the clamped voltage and current of load dummp TVF fail in the ISO 7637-2 test 0.5 Ω ...

Page 4

... Application Note Vishay General Semiconductor Transient Voltage Suppressors (TVS) for Automotive Electronic Protection Two Groups of Load Dump TVS There are two kinds of load dump TVS for the primary protection of automotive electronics: EPI PAR TVS and Non-EPI PAR TVS. Both product groups have similar operating breakdown characteristics in reverse bias mode ...

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