Is there a pin-compatible replacement for SMCJ28A?

5.0SMDJ28A uses the same 2-pin DO-214AB (SMC) package and is expected to be pin-compatible. However, always verify the datasheet's land pattern before board layout.

What risks should I check before replacing SMCJ28A?

First, ensure the replacement is unidirectional. Second, verify the standoff voltage (Vrwm) is 28V or suitable for your circuit's operating voltage. Finally, confirm the package is DO-214AB (SMC).

SMCJ28A Alternatives, Datasheet & Cross Reference | FTR Qiaoguang

SMCJ28A is a 1500W unidirectional TVS diode in a DO-214AB (SMC) package. Key alternatives include upgraded power versions and options with different voltage ratings.

AI replacement insight

Electrical riskmedium

Standoff voltage and polarity must be correct. Lower voltage can cause false clamping; higher voltage reduces protection.

Package risklow

The DO-214AB/SMC package is highly standardized, ensuring mechanical compatibility.

Can it be replaced directly?

Yes, 5.0SMDJ28A from MDE Semiconductor is a potential upgrade, matching the package, 28V standoff voltage, and polarity while offering higher power ratings.

Best replacement path

5.0SMDJ28A is a strong upgrade, offering 5000W power handling in the same package and voltage rating.

Main risk

The main risk when substituting is mismatching the polarity (unidirectional vs. bidirectional) or selecting a part with an incorrect standoff voltage.

Recommended alternatives

A robust upgrade with 3x power handling in the same package, matching key electricals like standoff voltage and polarity.

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Alternative comparison matrix

Feature / factor	SMCJ28A	5.0SMDJ28A	SMCJ24A	Compatibility / risk
Package	DO-214AB (SMC)	SMC (DO-214AB)	DO-214AB (SMC)	SMC (DO-214AB) / DO-214AB (SMC) — Industry standard equivalent package.; SMCJ24A: matched
Polarity Or Type	Unidirectional TVS	Unidirectional TVS	Unidirectional	Unidirectional TVS — matched; SMCJ24A: matched
Voltage V	28.0V	28.0V	24.0V	28.0V / 24.0V — Standoff voltage matches.; SMCJ24A: Lower standoff voltage requires circuit verification.
Power W	1500.0W	5000.0W	1500.0W	5000.0W / 1500.0W — Higher power rating provides more robust protection.; SMCJ24A: matched
Current A	33.1A	110.0A	38.6A	110.0A / 38.6A — Higher peak pulse current rating.; SMCJ24A: Higher peak pulse current rating.

Application & sourcing insights

Questions & answers

5.0SMDJ28A is an excellent upgrade, providing higher 5000W power protection in the same package with the same 28V standoff voltage. It offers a more robust solution.