Is there a pin-compatible replacement for L7805ABD2T-TR?

No direct pin-to-pin replacement has been identified. While other L7805 variants exist, they often differ in package (e.g., TO-220, DPAK) or performance grade, preventing a simple drop-in replacement without design changes.

What risks should I check before replacing L7805ABD2T-TR?

Key risks include: 1) Package Mismatch: Ensure the substitute's package fits your PCB layout. 2) Thermal Performance: A different package may require heatsinking or derating. 3) Temperature Range: The target has a -40°C to 125°C range; ensure the replacement meets your environmental needs. 4) Output Voltage Tolerance: The target has a 2% tolerance ('A' grade); other grades may be less precise.

L7805ABD2T-TR Alternatives, Datasheet & Cross Reference | STMicroelectronics

The STMicroelectronics L7805ABD2T-TR is a popular 5V, 1.5A linear voltage regulator in a D2PAK package. Finding a direct replacement requires matching the package, pinout, and key electrical parameters like temperature range and voltage tolerance.

AI replacement insight

Package riskhigh

No candidates match the D2PAK package; all require PCB layout changes.

Electrical riskmedium

Most alternatives have a narrower commercial temperature range.

Can it be replaced directly?

No direct drop-in replacement was found. All viable alternatives require design review for package, thermal, or temperature range differences.

Best replacement path

functional_alternate

Main risk

Package and thermal mismatch are the primary risks. The target's D2PAK package is not matched by any functional equivalent reviewed.

Recommended alternatives

Functional alternative in a smaller DPAK package with a commercial temperature range; requires layout and thermal review.

View details

Alternative comparison matrix

Feature / factor	L7805ABD2T-TR	L7805CDT-TR	L7805CV-DG	CJ7805 3%	Compatibility / risk
Package	D2PAK	DPAK	-	-	TO-252-2L (DPAK) — Different footprint and thermal properties vs. D2PAK.
Temperature	-40°C to 125°C	0°C to 125°C	-	-	-25°C to 125°C — Slightly narrower operating range on low end.
Voltage	5.0V	5.0V	-	-	5.0V — Output voltage matches.
Current	1.5A	1.5A	-	-	1.5A — Output current matches.
Manufacturer	STMicroelectronics	-	-	Jiangsu Changjing	Jiangsu Changjing — Cross-vendor part requires qualification.

Application & sourcing insights

Questions & answers

There is no single 'best' alternative, as substitutes involve trade-offs. Other parts in the L7805 family from STMicroelectronics, like the L7805CDT-TR, are functionally similar but come in different packages (DPAK) and have commercial temperature ratings, requiring board and thermal analysis.