MC7812BTG
onsemi
Needs validationhigh risk
Same-family functional alternate in a different package (TO-220), requiring board redesign.
Best Alternatives to MC7812BDTRKG
MC7812BDTRKG is a 12V, 1A linear voltage regulator in a DPAK-3 surface-mount package. While no direct pin-compatible replacements are identified, several functional alternatives exist in different packages that may be suitable after board layout modifications.
AI replacement insight
Package riskhigh
Requires board redesign (SMD to THT or different SMD footprint).
Electrical riskmedium
Check operating temperature range, as some alternatives are commercial grade (0°C min).
Sourcing risklow
The 7812 series is widely available from multiple vendors, though qualification may be needed.
Can it be replaced directly?
No, there is no direct, drop-in replacement for MC7812BDTRKG. All identified alternatives require a modification to the printed circuit board.
Best replacement path
For new designs, consider the MC7812BTG and adapt the PCB for its TO-220 package. For existing boards, no drop-in replacement was found.
Main risk
The main risk is the package mismatch. The target is a surface-mount DPAK-3, while most functional alternatives are in different packages like TO-220 (through-hole) or D2PAK (larger SMD).
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | MC7812BDTRKG | MC7812BTG | LM7812CT | MC7812CTG | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DPAK-3 | TO-220-3 | TO-220-3 | TO-220-3 | TO-220-3 / TO-263-2L (D2PAK) — Through-hole vs surface-mount requires board redesign.; LM7812CT: Through-hole vs surface-mount requires board redesign.; MC7812CTG: Through-hole vs surface-mount requires board redesign.; CJ7812: Different surface-mount package, requires footprint change. |
| Voltage | 12.0V | 12.0V | 12.0V | 12.0V | 12.0V — Output voltage matches.; LM7812CT: Output voltage matches.; MC7812CTG: Output voltage matches.; CJ7812: Output voltage matches. |
| Current | 1.0A | 1.0A | 1.5A | 1.0A | 1.0A / 1.5A — Output current matches.; LM7812CT: Higher output current capability.; MC7812CTG: Output current matches.; CJ7812: Higher output current capability. |
| Temperature | -40°C to +125°C | 0°C to +125°C (est.) | 0°C to +125°C | 0°C to +125°C | 0°C to +125°C (est.) / -25°C to +125°C — Likely commercial temp range, narrower than target.; LM7812CT: Candidate has a narrower commercial temperature range.; MC7812CTG: Candidate has a narrower commercial temperature range.; CJ7812: Slightly narrower temperature range. |
Application & sourcing insights
Questions & answers
There are no direct drop-in replacements for MC7812BDTRKG. The best functional alternatives, like onsemi's MC7812BTG, are in a different package (TO-220) and require a board redesign.