What risks should I check before replacing SRV05-4-N?

Before replacing SRV05-4-N, you must check three things: 1) The package and pinout are identical. 2) The reverse standoff voltage is 5V. 3) The capacitance is 0.3pF or very close, as higher values will degrade high-speed signals.

SRV05-4-N Alternatives, Datasheet & Cross Reference | BORN

SRV05-4-N is a 5V, 4-line TVS diode array in a SOT23-6 package. It features an ultra-low 0.3pF capacitance, making it ideal for protecting high-speed data interfaces like USB 2.0 and Ethernet from ESD damage.

AI replacement insight

Electrical riskhigh

Mismatched capacitance or standoff voltage can cause system failure.

Package riskmedium

Even with the same SOT23-6 package, pinout must be verified.

Can it be replaced directly?

Direct replacement for SRV05-4-N should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

TPAZC199-04S or PSRV05-4MR6T1G, as they match key electricals including the critical 0.3pF capacitance and 5V standoff voltage.

Main risk

The primary risk when substituting is using a part with higher capacitance, which can degrade high-speed signal integrity and cause data errors.

Recommended alternatives

Excellent alternative with matching package, voltage, and capacitance, plus higher power and current ratings.

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Alternative comparison matrix

Feature / factor	SRV05-4-N	PSRV05-4MR6T1G	TPAZC199-04S	ESDU5V0H4	Compatibility / risk
Package	SOT23-6	SOT23-6	SOT23-6	SOT23-6	SOT23-6 — Form factor matches.; TPAZC199-04S: Form factor matches.; ESDU5V0H4: Form factor matches.
Voltage	5.0 V	5 V	5 V	5.0 V	5 V / 5.0 V — Reverse standoff voltage matches.; TPAZC199-04S: Reverse standoff voltage matches.; ESDU5V0H4: Reverse standoff voltage matches.
Capacitance	0.3 pF	0.3 pF	0.3 pF	0.8 pF	0.3 pF / 0.8 pF — Ultra-low capacitance matches, suitable for high-speed lines.; TPAZC199-04S: Ultra-low capacitance matches, suitable for high-speed lines.; ESDU5V0H4: Higher capacitance may affect signal integrity on very high-speed lines.
Current	3.5 A	4 A	-	-	4 A — Higher peak pulse current rating.
Power	45 W	150 W	100 W	125.0 W	150 W / 100 W / 125.0 W — Higher peak pulse power rating provides more robust protection.; TPAZC199-04S: Higher peak pulse power rating provides more robust protection.; ESDU5V0H4: Higher peak pulse power rating.

Application & sourcing insights

Questions & answers

Verified drop-in options for SRV05-4-N are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.