
ElecSuper
A strong alternative from the same manufacturer with matching package, voltage, power, and polarity.
SENC5D3V1BA is a 3.3V bi-directional TVS diode in a SOD-523 package for ESD protection. Key alternatives must match the 3.3V working voltage, bi-directional polarity, and SOD-523 package.
SOD-523 is a standard package with many options.
Must match 3.3V working voltage, bi-directional polarity, and power rating. Capacitance is key for signal integrity.
Direct replacement for SENC5D3V1BA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
ESD5Z3.3C-ES from the same manufacturer, ElecSuper, offers identical key electrical parameters and package.
The main risk is selecting a part with the wrong working voltage (e.g., 5V) or higher junction capacitance, which can fail to protect the circuit or degrade signal integrity.

ElecSuper
A strong alternative from the same manufacturer with matching package, voltage, power, and polarity.
| Feature / factor | SENC5D3V1BA | ESD5Z3.3C-ES | ESD5Z3.3C | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-523 | SOD-523 | SOD-523 | SOD-523 — Form factor matches.; ESD5Z3.3C: Form factor matches. | |
| Polarity Or Type | Bi-directional | Bi-directional | Bi-directional | Bi-directional — Polarity matches.; ESD5Z3.3C: Polarity matches. | |
| Voltage | 3.3V | 3.3V | 3.3V | 3.3V — Working voltage matches.; ESD5Z3.3C: Working voltage matches. | |
| Power | 90W | 90W | Varies by MFR | 90W / Varies by MFR — Peak pulse power matches.; ESD5Z3.3C: Power rating is not consistent across sources. | |
| Capacitance | 15pF | 15pF | Varies by MFR | 15pF / Varies by MFR — Junction capacitance matches.; ESD5Z3.3C: Capacitance varies significantly (15pF to 105pF). |
Verified drop-in options for SENC5D3V1BA 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.