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Best Alternatives to SMDJ28CA

Package: SMC (DO-214AB)MeritekTransient Voltage Suppressors (TVS)Type: BidirectionalReverse Stand-Off Voltage: 28 VBreakdown Voltage (Min): 31.1 VBreakdown Voltage (Max): 34.4 VClamping Voltage (Max): 45.4 V

The SMDJ28CA is a popular 3000W, 28V bidirectional TVS diode in a surface-mount SMC package. It is widely used for transient voltage protection in various electronic circuits.

AI replacement insight

Electrical risklow

Low risk if sticking to 28V/3000W parts from reputable brands.

Package riskmedium

Many similar part numbers exist in different packages (e.g., SM8S series); verify SMC/DO-214AB.

Sourcing risklow

This is a multi-sourced part type with good availability.

Can it be replaced directly?

Direct replacement for SMDJ28CA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Cross-referencing to another major manufacturer's SMDJ28CA (e.g., Littelfuse) is the safest path.

Main risk

The main risk is using a part with a different package (e.g., DO-218AB) or a lower standoff voltage, which could lead to board layout issues or circuit malfunction.

Recommended alternatives

1
SMDJ28CA package
SMDJ28CA

Meritek

Needs validationlow risk

A pin-compatible alternative from a different manufacturer with identical key specifications.

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Alternative comparison matrix

Feature / factorSMDJ28CASMDJ28CA5.0SMDJ28CAAlt 3Compatibility / risk
PackageSMC (DO-214AB)SMC (DO-214AB)SMCSMC (DO-214AB) — Physical and footprint match.; 5.0SMDJ28CA: Physical and footprint match.
Voltage28.0V28V28V28V — Reverse standoff voltage matches.; 5.0SMDJ28CA: Reverse standoff voltage matches.
Power3000.0W3000W5000W3000W / 5000W — Peak pulse power matches.; 5.0SMDJ28CA: Higher power rating provides more robustness.
Polarity Or TypeBidirectionalBidirectionalBidirectionalBidirectional — Polarity matches.; 5.0SMDJ28CA: Polarity matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for SMDJ28CA are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.