5 kW peak pulse clamping at 9.2 V
The 5.0SMDJ5.0A-QH: The reverse standoff voltage of 5 V sets the continuous working plane — the diode remains off and contributes no leakage burden on the protected rail until a transient exceeds that threshold.
Standoff and breakdown window
Reverse standoff is 5 V typical, with a minimum breakdown of 6.4 V — the gap between 5 V and 6.4 V defines the design margin. A 5 V rail sees 1.4 V of headroom before the TVS begins to avalanche; the clamping voltage at 9.2 V then limits the peak stress that propagates downstream. This window is typical of a 5 V rail protector in automotive and telecom applications where the supply tolerance band is narrow and the transient duration is short.
Junction temperature and surface-mount form factor
Junction operating temperature is rated to 150 °C (TJ), with an absolute minimum of -55 °C. This span covers engine-compartment ambient swings without derating in most automotive module housings. Tape-and-reel packaging supports standard SMT assembly flow.
No official Bourns successor order code is cross-referenced for this part. The 5.0SMDJ-Q series is a established family — when evaluating alternatives within the series, confirm that the standoff and peak pulse ratings match the application requirement before substituting.