
Leiditech
Form-fit compatible TVS with a similar voltage but much lower power handling and capacitance.
Finding a substitute for the PTVS3V3D1BALYL-N, a 4.5V 500W TVS diode in a DFN1006 package, requires careful attention to power ratings. While several parts share the same package and voltage, most have significantly lower surge protection capabilities.
Candidates have <25% of the target's power rating, risking failure in a surge event.
All candidates use the same DFN1006 package, ensuring form-fit compatibility.
No direct drop-in replacement found. All candidates have significantly lower power ratings.
Downgrade with risk assessment
Inadequate surge protection due to a severe mismatch in Peak Pulse Power (Ppp) rating.

Leiditech
Form-fit compatible TVS with a similar voltage but much lower power handling and capacitance.
| Feature / factor | PTVS3V3D1BALYL-N | BTRD04A035 | ESD5451N | BDFN2C051U | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DFN1006 | DFN1006 | DFN1006 | DFN1006 | DFN1006 — Package matches.; ESD5451N: Package matches.; BDFN2C051U: Package matches. |
| Voltage V | 4.5V | 5.0V | 5.0V | 5.0V | 5.0V — Slightly higher standoff voltage, generally acceptable.; ESD5451N: Slightly higher standoff voltage, generally acceptable.; BDFN2C051U: Slightly higher standoff voltage, generally acceptable. |
| Power W | 500W | 110W | 80W | 60W | 110W / 80W / 60W — Significantly lower power rating.; ESD5451N: Significantly lower power rating.; BDFN2C051U: Significantly lower power rating. |
| Capacitance | 70pF | 0.22pF | 12pF | 0.5pF | 0.22pF / 12pF / 0.5pF — Ultra-low capacitance suggests use in high-speed data lines, unlike target.; ESD5451N: Lower capacitance may affect signal integrity differently.; BDFN2C051U: Ultra-low capacitance suggests use in high-speed data lines, unlike target. |
| Polarity Or Type | Bidirectional | - | Bidirectional | - | Bidirectional — Polarity matches. |
No direct drop-in replacement has been identified. Candidates like ESD5451N have a similar package and voltage but a much lower power rating (under 100W vs 500W). Thoroughly review your circuit's surge requirements before substituting.