
Protek Devices
This Protek Devices part has higher capacitance. An identically named part from MSKSEMI appears to be a closer match.
Finding a substitute for the SRV05-4 TVS diode requires careful attention to electrical parameters. While several alternatives exist in the same SOT-23-6 package, verifying low capacitance and correct pinout is critical for protecting high-speed data lines without compromising...
Capacitance mismatch is the primary electrical risk, followed by pinout differences.
All viable candidates use the same SOT-23-6 package, ensuring physical compatibility.
Many part numbers are used by multiple vendors with different specs, requiring careful sourcing.
Direct replacement for SRV05-4 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
functional_alternate
Increased capacitance from a substitute could degrade high-speed signal integrity, causing data errors.

Protek Devices
This Protek Devices part has higher capacitance. An identically named part from MSKSEMI appears to be a closer match.
| Feature / factor | SRV05-4 | SRV05-4-P-T7 | SRV05-4.TCT | USBLC6-4SC6 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-6 | SOT-23-6 | SOT-23-6 | SOT23-6 | SOT-23-6 / SOT23-6 — Package matches.; SRV05-4.TCT: Package matches.; USBLC6-4SC6: Package matches. |
| Voltage | 5V | 5.0V | 5.0V | 5.0V | 5.0V — Working voltage matches.; SRV05-4.TCT: Working voltage matches.; USBLC6-4SC6: Working voltage matches. |
| Capacitance | 0.6pF | 3.5pF | 3pF | 0.3pF or 3pF | 3.5pF / 3pF / 0.3pF or 3pF — Higher capacitance is a performance downgrade for high-speed lines.; SRV05-4.TCT: Significantly higher capacitance may impact signal integrity in high-speed applications.; USBLC6-4SC6: Data is conflicting; 0.3pF is an upgrade, 3pF is a downgrade. Verification required. |
| Power | 60W | 500W | 300W | - | 500W / 300W — Higher power rating is acceptable.; SRV05-4.TCT: Higher power rating is generally acceptable. |
| Pinout | 4 Unidirectional | - | - | 4 data + 1 pwr line | 4 data + 1 pwr line — Pinout may be specific to USB and differ from target. Must verify. |
Verified drop-in options for SRV05-4 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.