
Taiwan Semiconductor Corporation
A form-fit match with identical core ratings, but has a narrower temperature range and is not for new designs.
SM4007PL-TP is a 1A, 1000V standard recovery diode in a SOD-123FL package. While several alternatives exist, they require careful review of lifecycle status, temperature range, and recovery speed before use.
One close match (S1ML) is Not For New Designs, complicating long-term procurement.
Candidates may have different recovery times, higher forward voltage, or narrower temperature ranges.
Many functionally similar parts exist in different packages (SMA, SMC) that are not drop-in compatible.
No direct, risk-free replacement was found. S1ML is parametrically close but is Not For New Designs. Other candidates require engineering review due to functional or package differences.
Search for an active 1A/1000V standard recovery diode in a SOD-123FL package with a temperature range of -65°C to +175°C or wider.
The main risks are lifecycle obsolescence (NFND parts) and functional changes like recovery speed or higher forward voltage, which can affect circuit performance.

Taiwan Semiconductor Corporation
A form-fit match with identical core ratings, but has a narrower temperature range and is not for new designs.
| Feature / factor | SM4007PL-TP | S1ML | F1M | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-123FL | SOD-123FL | SOD-123FL | SOD-123FL — Package is physically compatible.; F1M: Package is physically compatible. | |
| Voltage | 1000V | 1000V | 1.3V @ 1A | 1000V / 1.3V @ 1A — Reverse voltage rating matches.; F1M: Forward voltage is higher, increasing power loss. | |
| Current | 1A | 1A | - | 1A — Average rectified current matches. | |
| Temperature | -65°C to +175°C | -55°C to +150°C | -55°C to +150°C | -55°C to +150°C — Operating temperature range is narrower.; F1M: Operating temperature range is narrower. | |
| Lifecycle | Active | Not For New Designs | - | Not For New Designs — Candidate is not recommended for new designs, posing a sourcing risk. | |
| Application | Standard (>1000ns) | - | Fast Recovery (500ns) | Fast Recovery (500ns) — Candidate is fast recovery, target is standard. May affect circuit behavior. |
S1ML is a close parametric match in the same package but is Not For New Designs. F1M is an active part in the same package but is a fast-recovery diode requiring circuit review.