Is there a pin-compatible replacement for MC7805CDTRKG?

NCV7805BDTRKG is highly likely to be a pin-compatible replacement as it belongs to the same 78xx family in the same DPAK package. However, other alternatives like the NCP1117 series are not pin-compatible and require board redesign.

What risks should I check before replacing MC7805CDTRKG?

Before replacing MC7805CDTRKG, you must check three key factors: 1) Package/footprint to ensure it fits on your PCB, 2) Pinout to ensure correct connections, and 3) Maximum input voltage to ensure it meets your system's requirements (target is 35V).

MC7805CDTRKG Alternatives, Datasheet & Cross Reference | onsemi

MC7805CDTRKG is a popular 5V, 1A linear voltage regulator from onsemi in a DPAK-3 package. When seeking alternatives, key considerations include package compatibility, pinout, maximum input voltage, and temperature range.

AI replacement insight

Electrical riskmedium

Some alternatives have a lower max input voltage (20V vs 35V).

Package riskmedium

Many functional alternatives come in different packages like D2PAK or SOT-223.

Firmware risklow

These are simple analog regulators with no firmware.

Can it be replaced directly?

Yes, NCV7805BDTRKG is a potential drop-in replacement for MC7805CDTRKG, offering superior temperature performance and automotive qualification.

Best replacement path

The NCV7805BDTRKG is the best replacement, serving as an automotive-grade upgrade in the same package with a wider temperature range.

Main risk

The main risk is selecting an alternative with an incompatible pinout or a lower maximum input voltage, which could damage the component or the system.

Recommended alternatives

An automotive-grade upgrade in the same package with a wider operating temperature range.

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Alternative comparison matrix

Feature / factor	MC7805CDTRKG	NCV7805BDTRKG	MC7805BD2TR4G	NCP1117DT50RKG	Compatibility / risk
Package	DPAK-3	DPAK-3	D2PAK-3	DPAK (TO-252)	DPAK-3 / D2PAK-3 / DPAK (TO-252) — Package appears identical, enabling form-fit compatibility.; MC7805BD2TR4G: Larger D2PAK package requires a different PCB footprint.; NCP1117DT50RKG: Same DPAK package, enabling form-fit compatibility.
Voltage	35 V	35 V	35 V	5.0 V	35 V / 5.0 V — Maximum input voltage is identical.; MC7805BD2TR4G: Maximum input voltage is identical (based on family datasheet).; NCP1117DT50RKG: Output voltage is identical.
Current	1.0 A	1.0 A	-	-	1.0 A — Output current is identical.
Temperature	0°C to 125°C	-40°C to +125°C	-40°C to +125°C	-	-40°C to +125°C — Wider operating temperature range and AEC-Q100 qualified.; MC7805BD2TR4G: Wider operating temperature range.
Pinout	Standard 78xx	-	-	Different	Different — Pin assignments are different (e.g., Vin/GND/Vout vs GND/Vout/Vin), requires PCB redesign.

Application & sourcing insights

Questions & answers

The best alternative to MC7805CDTRKG is NCV7805BDTRKG. It is an automotive-grade version from the same manufacturer in the same DPAK package, with identical electrical ratings and a wider operating temperature range.