Is there a pin-compatible replacement for UDT26A05L05-LC1?

Several parts like ESDSRVLC05-4 and SRV05-4 share the same SOT-23-6L package, but pin-to-pin compatibility requires careful datasheet review to confirm the pinout matches the rail-to-rail topology for 4 data lines.

What risks should I check before replacing UDT26A05L05-LC1?

Key risks include mismatched peak pulse current (Ipp), higher clamping voltage (less protection), and higher capacitance which can degrade high-speed signals. Always verify the pinout and protection topology from the datasheet.

UDT26A05L05-LC1 Alternatives, Datasheet & Cross Reference | Yageo

UDT26A05L05-LC1 is a 5V, 4-channel TVS diode array from Yageo in a SOT-23-6L package. It's designed for high-speed data line ESD protection, featuring low capacitance (0.8pF) and a 5A surge rating.

AI replacement insight

Electrical riskhigh

Peak current and clamping voltage are critical for protection and must be verified.

Package risklow

SOT-23-6L is a standard package, but pinout must be confirmed.

Firmware risklow

This is a passive component with no firmware.

Can it be replaced directly?

No direct drop-in replacement has been verified. ESDSRVLC05-4 is a strong candidate pending verification of its peak pulse current. The SRV05-4 family also offers functional alternatives.

Best replacement path

ESDSRVLC05-4 offers superior clamping voltage and similar capacitance, but requires verification of its peak pulse current rating to ensure it meets or exceeds the target's 5A.

Main risk

The primary risk is using a substitute with an insufficient peak pulse current (Ipp) rating, which could lead to device failure during a surge event.

Recommended alternatives

A strong functional alternative with superior clamping voltage, pending verification of its peak current rating.

View details

Alternative comparison matrix

Feature / factor	UDT26A05L05-LC1	ESDSRVLC05-4	SRV05-4	Compatibility / risk
Package	SOT-23-6L	SOT-23-6L	SOT-23-6L	SOT-23-6L — Package matches target.; SRV05-4: Package matches target.
Voltage	5V	5V	5V	5V — Working voltage matches.; SRV05-4: Working voltage matches.
Clamping Voltage	16V @ 5A	12V	-	12V — Lower clamping voltage provides better protection.
Current	5A	Missing	Missing	Missing — Peak pulse current (Ipp) must be verified to be >= 5A.; SRV05-4: Peak pulse current (Ipp) must be verified to be >= 5A.
Capacitance	0.8pF	0.9pF	~0.4pF	0.9pF / ~0.4pF — Slightly higher capacitance, likely acceptable.; SRV05-4: Lower capacitance is better for high-speed signals.
Channels	4	-	4	4 — Channel count matches.

Application & sourcing insights

Questions & answers

ESDSRVLC05-4 by Yint is a strong functional alternative with a better clamping voltage, but its peak pulse current rating must be verified. The SRV05-4 series from various manufacturers is also a viable option, requiring review of specific datasheets.