No direct drop-in alternative is confirmed. BAS20H is functionally similar (trr=50ns) but has a lower 200V rating. FR107WS has higher ratings but is too slow (trr=500ns). Both require engineering validation.
Best Alternatives to LBAS21HT1G
LBAS21HT1G is a 250V, 200mA fast switching diode in a SOD-323 package with a 50ns reverse recovery time. Finding a direct replacement requires matching these key electrical and mechanical parameters.
AI replacement insight
Electrical riskhigh
Mismatches in voltage rating (VR) and reverse recovery time (trr) are common in available parts.
Package risklow
The SOD-323 package is common and pinout is standard.
Sourcing riskmedium
Finding a part that matches all critical specs (VR>=250V, IF>=200mA, trr<=50ns, SOD-323) can be challenging.
Can it be replaced directly?
There are no verified direct, pin-to-pin replacements for the LBAS21HT1G. All potential alternatives require careful review of critical parameters.
Best replacement path
No direct drop-in replacement was found. The closest candidates have significant trade-offs in either switching speed (FR107WS) or voltage rating (BAS20H), requiring engineering review.
Main risk
The primary risk is substituting with a diode that has a lower voltage rating or a much slower switching speed, which could lead to component failure or circuit malfunction.
Recommended alternatives
Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.
Alternative comparison matrix
| Feature / factor | LBAS21HT1G | BAS20H (KAS20H) | FR107WS | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-323 | SOD-323 | - | SOD-323 — Form factor is compatible. | |
| Trr | 50ns | 50ns | - | 500ns — 10x slower, not suitable for high-speed switching. | |
| Voltage | 250V | 200V | - | 1000V — Candidate has a much higher voltage rating. | |
| Current | 0.2A | unknown | - | 1.0A — Candidate has a much higher current rating. |