Is there a pin-compatible replacement for F1M?

No pin-compatible replacement with identical or better performance was identified. SM4007PL-TP shares the SOD-123FL package but is a slower, standard recovery diode, which is a critical functional difference.

What risks should I check before replacing F1M?

The main risk is mismatching the recovery time. Replacing the 500ns F1M with a standard recovery diode can cause failure in switching circuits. Also, check package footprints; many alternatives require a new PCB layout.

F1M Alternatives, Datasheet & Cross Reference | Yangjie Technology

F1M is a 1000V, 1A fast recovery diode in a compact SOD-123FL package. When seeking alternatives, prioritize matching the 500ns recovery time and SOD-123FL footprint for a direct replacement.

AI replacement insight

Electrical riskhigh

Replacing a fast diode with a standard one can cause circuit failure.

Package riskhigh

Most functional alternatives require a PCB layout change.

Sourcing risklow

Target and alternatives are active from multiple vendors.

Can it be replaced directly?

No direct, fully-compatible replacement for F1M has been verified. While some parts share the package, they differ critically in recovery speed.

Best replacement path

For new layouts, consider HS2MA (SMA package) for an electrical upgrade. For existing boards, no direct drop-in is confirmed; evaluate SM4007PL-TP for non-critical timing applications.

Main risk

Functional mismatch due to recovery time (fast vs. standard).

Recommended alternatives

Electrical upgrade with higher current and faster speed, but in a different package (SMA).

View details

Alternative comparison matrix

Feature / factor	F1M	HS2MA	GS8M	SM4007PL-TP	Compatibility / risk
Package	SOD-123FL	DO-214AC (SMA)	DO-214AB (SMC)	SOD-123FL	DO-214AC (SMA) / DO-214AB (SMC) / SOD-123FL — Requires PCB layout change.; GS8M: Larger package requires PCB layout change.; SM4007PL-TP: Package is physically compatible.
Current	1A	2A	8A	1A	2A / 8A / 1A — Higher current rating is an upgrade.; GS8M: Much higher current rating is a significant upgrade.; SM4007PL-TP: Average rectified current matches.
Recovery Time	500 ns	75 ns	<=500 ns	>1000 ns	75 ns / <=500 ns / >1000 ns — Much faster recovery is an upgrade.; GS8M: Recovery speed is compatible.; SM4007PL-TP: Candidate is a standard recovery diode, target is fast recovery.
Voltage	1000V	1000V	1000V	-	1000V — Voltage rating matches.; GS8M: Voltage rating matches.
Voltage Forward	1.3V @ 1A	-	-	1.1V @ 1A	1.1V @ 1A — Lower forward voltage is a slight improvement.

Application & sourcing insights

Questions & answers

The best alternative depends on your design. For a board redesign, HS2MA offers superior speed and current in an SMA package. If the footprint must be maintained, no direct upgrade was found.