Is there a pin-compatible replacement for PESD2CANFD24V-UX?

Yes, parts like PESD2IVN27-UX and PESD2IVN-UX use the same SOT323 package and pinout. While mechanically compatible, key electrical parameters like clamping voltage and capacitance differ and require engineering review.

What risks should I check before replacing PESD2CANFD24V-UX?

The main risks are electrical. Check the substitute's clamping voltage to ensure it protects downstream components. Also, verify its capacitance is low enough for your bus speed, especially for CAN-FD, to avoid signal degradation.

PESD2CANFD24V-UX Alternatives, Datasheet & Cross Reference | Nexperia USA Inc.

The Nexperia PESD2CANFD24V-UX is an automotive bidirectional TVS diode in a SOT323 package, optimized for protecting 24V CAN-FD bus lines. Finding a replacement requires matching its low capacitance and clamping voltage.

AI replacement insight

Electrical riskmedium

Clamping voltage and capacitance differ in candidates, requiring circuit analysis.

Package risklow

SOT323 package and pinout are standard and compatible.

Sourcing risklow

Nexperia is a major supplier with active alternatives available.

Can it be replaced directly?

No drop-in replacement is confirmed. PESD2IVN27-UX is a strong candidate but its higher capacitance (14pF vs 5.2pF) may affect CAN-FD performance and requires testing.

Best replacement path

PESD2IVN27-UX is the closest functional match, but requires capacitance review for CAN-FD.

Main risk

Signal integrity degradation due to higher capacitance in substitutes, potentially impacting CAN-FD communication.

Recommended alternatives

Functional alternative in the same SOT323 package with similar voltage ratings, but higher capacitance.

View details

Alternative comparison matrix

Feature / factor	PESD2CANFD24V-UX	PESD2IVN27-UX	PESD2IVN-UX	Compatibility / risk
Package	SOT323 (SC-70)	SOT323 (SC-70)	SOT323 (SC-70)	SOT323 (SC-70) — Package matches, enabling form-fit compatibility.; PESD2IVN-UX: Package matches, enabling form-fit compatibility.
Voltage	33V @ 1A	36V @ 3A	53V	36V @ 3A / 53V — Clamping voltage is comparable but slightly higher.; PESD2IVN-UX: Clamping voltage is significantly higher, offering less protection.
Capacitance	5.2pF	14pF	-	14pF — Higher capacitance may affect high-speed CAN-FD signals.
Current	2.6A	-	3A	3A — Peak pulse current rating is higher.
Lifecycle	Active	-	Active	Active — Both parts are active.

Application & sourcing insights

Questions & answers

PESD2IVN27-UX is a strong functional alternative from the same manufacturer, offering similar voltage protection. However, its higher capacitance (14pF vs 5.2pF) must be evaluated for CAN-FD signal integrity.