
HGSEMI
A potential alternative with matching electrical ratings but a narrower temperature range; package requires verification.
The L7815CV(UMW) is a standard 15V fixed positive linear voltage regulator in a TO-220 package, delivering up to 1.2A. It's widely used in power supply and regulation circuits.
Some candidates have lower max input voltage.
Many alternatives are surface-mount (SMD) instead of through-hole (THT).
No verified direct drop-in replacement is available. The LM7815T is the closest functional match but has a narrower temperature range and requires pinout confirmation.
The most direct path is to evaluate the LM7815T, focusing on the minimum operating temperature. If a board redesign is possible, surface-mount options can be considered.
The primary risk is environmental mismatch due to candidates having a higher minimum operating temperature (0°C vs -40°C).

HGSEMI
A potential alternative with matching electrical ratings but a narrower temperature range; package requires verification.
| Feature / factor | L7815CV(UMW) | LM7815T | L7815CD2T-TR | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Output Voltage V | 15.0V | 15.0V | 15.0V | 15.0V — Core voltage matches.; L7815CD2T-TR: Output voltage matches. | |
| Output Current A | 1.2A | 1.2A | 1.5A | 1.2A / 1.5A — Current capacity matches.; L7815CD2T-TR: Higher current capability. | |
| Package | TO-220 | TO-220-3 | D2PAK (SMD) | TO-220-3 / D2PAK (SMD) — Likely compatible, but requires pinout verification.; L7815CD2T-TR: Surface-mount package requires board redesign. | |
| Temperature | -40°C to 125°C | 0°C to 125°C | 0°C to 125°C | 0°C to 125°C — Reduced operating range, not suitable for sub-zero applications.; L7815CD2T-TR: Reduced operating range. | |
| Input Voltage V | 35V | 35V | 30V | 35V / 30V — Maximum input voltage matches.; L7815CD2T-TR: Lower maximum input voltage. |
The LM7815T from HGSEMI is a strong functional alternative with the same voltage and current ratings, but requires checking the narrower temperature range (0°C min) for your application.