P6SMB6.8CA
Yangjie Technology
Needs validationmedium risk
Strong functional alternative with matching voltage and higher power, but in a larger SMB package.
Best Alternatives to SMAJ6.8CA
SMAJ6.8CA is a 400W bidirectional TVS diode in a compact SMA package, designed to protect circuits with a 5.8V standoff voltage. Finding a replacement requires matching both electrical parameters and the surface-mount footprint.
AI replacement insight
Package riskhigh
Requires PCB redesign as alternatives are in a larger SMB package.
Electrical riskmedium
Verify clamping voltage and other dynamic characteristics for the application.
Sourcing risklow
TVS diodes in this range are widely available from multiple manufacturers.
Can it be replaced directly?
No direct, pin-compatible replacement for SMAJ6.8CA was identified. All viable candidates require a change in the PCB layout due to a different package size.
Best replacement path
Use P6SMB6.8CA if the PCB can be modified for the larger SMB package, as it matches the critical 5.8V standoff voltage.
Main risk
The primary risk is the package mismatch. The target uses an SMA package, while the best functional alternatives use a larger SMB package.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | SMAJ6.8CA | P6SMB6.8CA | SMBJ6.5CA | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA (DO-214AC) | DO-214AA (SMB) | DO-214AA (SMB) | DO-214AA (SMB) — Larger footprint requires PCB redesign.; SMBJ6.5CA: Larger footprint requires PCB redesign. | |
| Voltage | 5.8V | 5.8V | 6.5V | 5.8V / 6.5V — Standoff voltage matches target.; SMBJ6.5CA: Higher standoff voltage, verify protection level. | |
| Power | 400W | 600W | 600W | 600W — Higher power rating is an upgrade.; SMBJ6.5CA: Higher power rating is an upgrade. | |
| Polarity Or Type | Bi-directional | Bi-directional | Bidirectional | Bi-directional / Bidirectional — matched; SMBJ6.5CA: matched |
Application & sourcing insights
Questions & answers
P6SMB6.8CA offers a matching 5.8V standoff voltage and higher 600W power rating, but it comes in a larger SMB package, requiring a PCB layout change. No direct drop-in replacement has been identified.