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Best Alternatives to SMAJ24CA

Package: DO-214AC (SMA)Microdiode Semiconductor (Shenzhen) Co., Ltd.UVReverse Stand-Off Voltage (VRWM): 24 VBreakdown Voltage (VBR): 26.7 V - 29.5 VMaximum Clamping Voltage (VC): 38.9 VPeak Pulse Current (IPP): 10.3 APeak Pulse Power: 400 W

Find verified substitutes and functional alternatives for the SMAJ24CA TVS diode. Compare pin-compatible options and higher-power alternatives in different packages.

AI replacement insight

Electrical risklow

Cross-vendor parts with the same MPN have very similar specs. Higher-rated parts are generally safe.

Package riskhigh

Alternatives in SMB or SMC packages are not drop-in and require a new PCB layout.

Sourcing risklow

SMAJ24CA is a widely available, multi-sourced component, reducing sourcing risk.

Can it be replaced directly?

Direct replacement for SMAJ24CA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for SMAJ24CA, then review parametric alternatives for package and electrical fit.

Main risk

The primary risk is package incompatibility when considering parts from different series (e.g., SMBJ, SMCJ), which requires PCB layout changes.

Recommended alternatives

5
SMAJ24CA package
SMAJ24CA

MDD

Needs validationlow risk

A cross-vendor alternative with matching package, polarity, voltage, and power ratings.

View details

Alternative comparison matrix

Feature / factorSMAJ24CASMAJ24CASMBJ28CASMBJ30CACompatibility / risk
PackageDO-214AC (SMA)DO-214AC (SMA)DO-214AA (SMB)DO-214AA (SMB)DO-214AC (SMA) / DO-214AA (SMB) / DO-214AA, SMB — Package matches, enabling form-fit compatibility.; SMBJ28CA: Larger package requires layout change.; SMBJ30CA: Larger package requires layout change.; SMBJ36CA: Larger package requires layout change.
Polarity Or TypeBidirectionalBidirectional--Bidirectional — Polarity matches, ensuring correct circuit protection.
Voltage V24.0V24.0V28.0V30.0V24.0V / 28.0V / 30.0V / 36.0V — Reverse standoff voltage matches.; SMBJ28CA: Higher standoff voltage may affect protection level.; SMBJ30CA: Higher standoff voltage may affect protection level.; SMBJ36CA: Higher standoff voltage may affect protection level.
Power W400.0W400.0W600.0W600.0W400.0W / 600.0W — Power rating matches.; SMBJ28CA: Higher power rating provides more margin.; SMBJ30CA: Higher power rating provides more margin.; SMBJ36CA: Higher power rating provides more margin.
Current A10.3A10.3A--10.3A — Peak pulse current matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for SMAJ24CA 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.