
ElecSuper
Strong parametric match from the same manufacturer; pinout verification is required.
The USBLC6-4SC6-ES is a 4-line, 5V TVS diode with ultra-low 0.6pF capacitance in a SOT-23-6L package, ideal for protecting high-speed data lines. Alternatives must match its low capacitance to maintain signal integrity.
Capacitance mismatch can cause signal integrity failure.
While the package is the same, pinout must be verified to avoid board redesign.
Direct replacement for USBLC6-4SC6-ES should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
SEUC236T5V4U from the same manufacturer offers a nearly identical parametric profile. SRV05-4.TCT-JSM is a potential upgrade with even lower capacitance. Both require pinout verification from their datasheets.
The primary risk is substituting with a part that has higher capacitance, which can degrade high-speed signals like USB 2.0 and impact system performance.

ElecSuper
Strong parametric match from the same manufacturer; pinout verification is required.
| Feature / factor | USBLC6-4SC6-ES | SEUC236T5V4U | SRV05-4.TCT-JSM | RCLAMP0504S.TCT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-6L | SOT-23-6L | SOT-23-6L | SOT-23 6L | SOT-23-6L / SOT-23 6L — Package matches, enabling form-factor compatibility.; SRV05-4.TCT-JSM: Package matches, enabling form-factor compatibility.; RCLAMP0504S.TCT: Package is a match. |
| Application | 4 | 4 | - | - | 4 — Matches the target's 4 protected lines. |
| Voltage | 5V | 5V | 5V | 5V | 5V — Working voltage is identical.; SRV05-4.TCT-JSM: Working voltage is identical.; RCLAMP0504S.TCT: Working voltage is identical. |
| Capacitance | 0.6pF | 0.6pF | 0.35pF | < 3pF | 0.6pF / 0.35pF / < 3pF — Ultra-low capacitance matches, suitable for high-speed lines.; SRV05-4.TCT-JSM: Lower capacitance is an upgrade for high-speed signals.; RCLAMP0504S.TCT: Significantly higher capacitance may degrade high-speed signals. |
| Power | 60W | 60W | Not specified | 150W | 60W / Not specified / 150W — Peak pulse power rating is identical.; SRV05-4.TCT-JSM: Peak pulse power rating is not available for direct comparison.; RCLAMP0504S.TCT: Higher power rating is an improvement. |
| Esd Rating | ±12kV / ±17kV | - | ±16kV / ±27kV | - | ±16kV / ±27kV — Higher ESD ratings (contact/air) provide better protection. |
Verified drop-in options for USBLC6-4SC6-ES 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.