MSMCJ24CA Equivalent & Substitute Parts

Part Overview

The MSMCJ24CA is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 24V reverse standoff voltage and provides clamping at 38.9V maximum, with a peak pulse current rating of 38.6A. The component is housed in a DO-214AB (SMC) package and maintains active product status with military-grade qualification per MIL-PRF-19500.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints require alternative sourcing, or when design flexibility permits equivalent performance from alternative manufacturers while maintaining identical electrical and mechanical specifications.

Substiute Parts

MSMCJ24CA

Microchip TechnologyIn Stock: 963MSMCJ24CA Datasheet

Current PartRFQ

SMCJ24CA-13

Diodes IncorporatedIn Stock: 3111SMCJ24CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by strict equivalence across electrical performance parameters and mechanical compatibility. The following parameters establish substitution validity:

Critical Electrical Parameters:

• Voltage - Reverse Standoff (Typ): Must equal 24V
• Voltage - Breakdown (Min): Must equal 26.7V
• Voltage - Clamping (Max) @ Ipp: Must equal 38.9V
• Current - Peak Pulse (10/1000µs): Must equal 38.6A
• Power - Peak Pulse: Must equal 1500W

Critical Mechanical Parameters:

• Package / Case: Must be DO-214AB (SMC)
• Mounting Type: Must be Surface Mount
• Bidirectional Channels: Must equal 1

Functional Parameters:

• Type: Must be Zener
• Applications: General Purpose

Substitute parts meeting all these criteria are electrically and mechanically interchangeable with the MSMCJ24CA in circuit applications requiring identical voltage suppression and current handling characteristics.

Parameter Comparison

*Operating temperature range: SMCJ24CA-13 minimum temperature is -55°C versus -65°C for MSMCJ24CA. Applications requiring operation below -55°C require the MSMCJ24CA.

Engineering Selection Recommendations

MSMCJ24CA (Microchip Technology)

Select this part for applications requiring the full military-grade specification with MIL-PRF-19500 qualification and extended low-temperature operation to -65°C. This part maintains active product status and is recommended as the primary selection for new designs and long-term production requirements.

SMCJ24CA-13 (Diodes Incorporated)

This part provides electrical and mechanical equivalence to the MSMCJ24CA across all critical parameters. However, the SMCJ24CA-13 is discontinued at DiGi Electronics and operates only to -55°C minimum temperature. This part is suitable as a substitute only in applications where the operating temperature range does not extend below -55°C and where supply availability from alternative distributors is confirmed. The discontinued status limits its viability for ongoing production sourcing.

Both parts share identical RoHS non-compliance status, REACH unaffected classification, and moisture sensitivity level, ensuring regulatory consistency in substitution scenarios.

Frequently Asked Questions (FAQ)

Q: Can SMCJ24CA-13 replace MSMCJ24CA in all applications?

A: SMCJ24CA-13 provides electrical and mechanical equivalence for voltage suppression and current handling. However, the operating temperature minimum differs: SMCJ24CA-13 operates to -55°C while MSMCJ24CA operates to -65°C. Substitution is valid only for applications where the minimum operating temperature does not fall below -55°C.

Q: What makes these parts electrically equivalent?

A: Both parts share identical specifications for reverse standoff voltage (24V), breakdown voltage (26.7V minimum), clamping voltage (38.9V maximum), peak pulse current (38.6A), and peak pulse power (1500W). These parameters define the voltage suppression performance and current handling capacity in circuit protection applications.

Q: Are the packages identical?

A: Yes. Both parts use the DO-214AB (SMC) surface-mount package. PCB footprints and reflow soldering profiles are compatible between the two parts.

Q: Why is SMCJ24CA-13 listed as discontinued?

A: The SMCJ24CA-13 is discontinued at DiGi Electronics, indicating it is no longer available through this distributor. Availability through alternative distributors should be verified before selecting this part for production use.

Q: Do these parts have different compliance certifications?

A: Both parts share identical RoHS non-compliance status and REACH unaffected classification. The MSMCJ24CA carries military-grade qualification per MIL-PRF-19500, which is not specified for the SMCJ24CA-13. Applications requiring military qualification must use the MSMCJ24CA.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow soldering processes.