What risks should I check before replacing TPESD1CAN?

When replacing TPESD1CAN, verify the substitute's capacitance is low enough for your CAN bus speed (e.g., <20pF). Also, ensure the clamping voltage provides adequate protection without interfering with normal operation.

TPESD1CAN Alternatives, Datasheet & Cross Reference | TECH PUBLIC

TPESD1CAN is a 24V bi-directional TVS diode in a SOT-23 package, designed to protect two CAN bus lines from ESD and surge events with 200W peak power handling.

AI replacement insight

Electrical riskhigh

Using a part with capacitance >20pF can cause signal integrity issues on the CAN bus.

Package risklow

SOT-23 is a standard package, but pinout must be confirmed for 2-line protection.

Can it be replaced directly?

Direct replacement for TPESD1CAN should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a higher-power, AEC-Q101 qualified part like SM24CANB-02HTG for improved robustness in automotive applications.

Main risk

The primary risk is using a substitute with higher capacitance, which can degrade CAN bus signal integrity, especially at higher data rates like CAN-FD.

Recommended alternatives

A strong alternative for CAN bus protection with matching package, voltage, and power rating.

View details

Alternative comparison matrix

Feature / factor	TPESD1CAN	SM24CANA-02HTG	SM24CANB-02HTG	PESD2CAN-ES	Compatibility / risk
Package	SOT-23	SOT23-3	SOT23-3	SOT-23	SOT23-3 / SOT-23 — Form and fit compatible.; SM24CANB-02HTG: Form and fit compatible.; PESD2CAN-ES: Form and fit compatible.
Voltage	24V	24V	24V	24V	24V — Matches target's working voltage.; SM24CANB-02HTG: Matches target's working voltage.; PESD2CAN-ES: Matches target's working voltage.
Power	200W	200W	500W	600W	200W / 500W / 600W — Matches target's peak pulse power.; SM24CANB-02HTG: Higher power rating provides more robustness.; PESD2CAN-ES: Higher power rating provides more robustness.
Application	CAN Bus Protection	CAN Bus Protection	CAN Bus Protection	-	CAN Bus Protection — Designed for the same application.; SM24CANB-02HTG: Designed for the same application.
Qualification	Not specified	AEC-Q101	-	-	AEC-Q101 — Automotive qualified, an improvement.
Capacitance	14 pF	-	-	Unknown	Unknown — Must be verified for CAN bus signal integrity.

Application & sourcing insights

Questions & answers

Verified drop-in options for TPESD1CAN 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.