Automotive DC 24V system overload test solution and protection solution

Dongwo Electronics has shared the protection solutions and circuit protection device selection for the overload test of the 24V system in the car many times before. The classic solution for the 24V power supply load dump transient surge overvoltage protection is shown in the figure below:

As can be seen from the figure, the 24V system over-load dump test requires the use of TVS tubes (SM8S36CA and 6.6SMDJ36CA) to protect automotive electronic products from transient surge threats and damage. For the over-load dump

test of the automotive 24V system, in addition to selecting TVS tubes SM8S36CA and 6.6SMDJ36CA, you can also choose: SDP36CA, SM8S33CA, LDP33A, SM8S28CA, SMD8S36CA, etc.

Among them, the SMD8S36CA TVS tube is a new product launched by TVS diode manufacturer Dongwo Electronics. The Dongwo automotive 24V system over-load dump test solution protection solution diagram (small size SMD8S36CA) is shown below:

In response to the load dump test of the DC 24V power supply system in automobiles, Dongwo Electronics has launched a high-power TVS tube with a smaller package: SMD8S36CA, which is used for load dump protection of the DC 24V power supply in automobiles and can pass the ISO 16750-2 P5a (Us=202V, Td=350ms, Ri=4Ω) test level.

TVS tube SMD8S36CA, bidirectional patch, AEC-Q101 certified, peak pulse power 6600W, working voltage 36V, peak pulse current 114A, clamping voltage 58.1V, package MINI218. Benchmarking

the DO-218AB package series TVS products, with the same power and smaller package size, it greatly reduces the PCB board space and is very suitable for 24V vehicle system load dump protection. It is a very mature, stable, and highly reliable automotive-grade TVS protection tube.

TVS transient suppression diode SMD8S36CA parameters

Looking at the product specification of Dongwo Electronics "TVS-SMD8S Series Datasheet", we can see that:

√ Working peak reverse voltage: 36V
√ Minimum breakdown voltage: 40V
√ Maximum breakdown voltage: 44.2V
√ Clamping voltage: 58.1V
√ Peak pulse current: 114A
√ Leakage current: 0.5uA
√ Peak pulse power: 6600W
√ Package: MIN218

TVS transient suppression diode SMD8S36CA size

TVS Transient Suppression Diode SMD8S Series Model

1）SMD8S系列单向TVS管：SMD8S14A、SMD8S15A、SMD8S16A、SMD8S17A、SMD8S18A、SMD8S20A、SMD8S22A、SMD8S24A、SMD8S26A、SMD8S28A、SMD8S30A、SMD8S33A、SMD8S36A、SMD8S40A、SMD8S43A、SMD8S48A。

2) SMD8S series bidirectional TVS tubes: SMD8S14CA, SMD8S15CA, SMD8S16CA, SMD8S17CA, SMD8S18CA, SMD8S20CA, SMD8S22CA, SMD8S24CA, SMD8S26CA, SMD8S28CA, SMD8S30CA, SMD8S33CA, SMD8S36CA, SMD8S40CA, SMD8S43CA, SMD8S48CA.