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Best Alternatives to SMAJ6.5CA

Package: DO-214AC (SMA)Microdiode Semiconductor (Shenzhen) Co., Ltd.UVPeak Pulse Power: 400 WReverse Stand-off Voltage (VRWM): 6.5 VBreakdown Voltage (VBR): 7.22 V - 7.98 VMaximum Clamping Voltage (VC): 11.2 VPeak Pulse Current (IPP): 35.7 A

SMAJ6.5CA is a popular 400W, 6.5V bidirectional TVS diode in a DO-214AC (SMA) package, used for transient voltage protection. Several manufacturers offer pin-compatible or functionally similar alternatives.

AI replacement insight

Electrical riskhigh

Mismatched standoff or clamping voltage can lead to circuit malfunction or inadequate protection.

Package risklow

The DO-214AC (SMA) package is highly standardized, making mechanical incompatibility unlikely.

Sourcing risklow

This is a common part available from multiple manufacturers, reducing sourcing risk.

Can it be replaced directly?

Direct replacement for SMAJ6.5CA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Cross-reference to SMAJ6.5CA from other major manufacturers like Bourns or Littelfuse.

Main risk

Using a part with a lower standoff voltage (e.g., SMAJ6.0CA) can cause unintended clamping during normal operation.

Recommended alternatives

2
SMAJ6.5CA package
SMAJ6.5CA

BOURNS

Needs validationlow risk

A strong cross-vendor alternative from Bourns with identical key parameters and package.

View details

Alternative comparison matrix

Feature / factorSMAJ6.5CASMAJ6.5CAP4SMA6.8CAP4SMA8.2CAHM2GCompatibility / risk
PackageDO-214AC (SMA)DO-214AC (SMA)DO-214AC (SMA)DO-214AC, SMADO-214AC (SMA) / DO-214AC, SMA — Package is identical.; P4SMA6.8CA: Package is identical.; P4SMA8.2CAHM2G: Package is identical.
Polarity Or TypeBidirectionalBidirectional--Bidirectional — Polarity is identical.
Voltage6.5V6.5V5.8V7.02V6.5V / 5.8V / 7.02V — Reverse standoff voltage is identical.; P4SMA6.8CA: Lower standoff voltage may cause clamping during normal operation.; P4SMA8.2CAHM2G: Higher standoff voltage is generally safer but may affect protection thresholds.
Power400W400W400W-400W — Peak pulse power rating is identical.; P4SMA6.8CA: Peak pulse power rating is identical.
LifecycleActiveActive--Active — Both parts are active.
Current35.7A-38.1A-38.1A — Higher peak pulse current rating.
Clamping Voltage11.2V--12.1V12.1V — Higher clamping voltage offers less protection.
Pinout2--00 — Pin count missing in source data, assumed 2 from package.

Application & sourcing insights

Questions & answers

Verified drop-in options for SMAJ6.5CA 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.