SMCJ24CA-M3/9AT Equivalent & Substitute Parts

Part Overview

The SMCJ24CA-M3/9AT is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 24V reverse standoff voltage class and is designed for general-purpose transient protection applications. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

SMCJ24CA-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1173SMCJ24CA-M3/9AT Datasheet

Current PartRFQ

SMCJ24CA-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 10083SMCJ24CA-E3/57T Datasheet

DirectRFQ

SMCJ24CA

MDDIn Stock: 62253SMCJ24CA Datasheet

DirectRFQ

SMCJ24CA

MDDIn Stock: 62253SMCJ24CA Datasheet

DirectRFQ

SMCJ24CA-13-F

Diodes IncorporatedIn Stock: 23214SMCJ24CA-13-F Datasheet

DirectRFQ

SMCJ24CA-TP

Micro Commercial CoIn Stock: 3285SMCJ24CA-TP Datasheet

DirectRFQ

5.0SMDJ24CA

MDE Semiconductor IncIn Stock: 301985.0SMDJ24CA Datasheet

MFR RecommendedRFQ

SMDJ24CA

Alpha & Omega Semiconductor Inc.In Stock: 95494SMDJ24CA Datasheet

MFR RecommendedRFQ

SMLJ24CA

Bourns Inc.In Stock: 2018SMLJ24CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ24CA-M3/9AT is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 38.9V
• Package / Case: DO-214AB, SMC
• Type: Zener, Bidirectional
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Allowable Variations:

• Current - Peak Pulse (10/1000µs): 38.6A or higher
• Power - Peak Pulse: 1500W or higher
• Operating Temperature Range: -55°C minimum and 150°C maximum or wider
• Packaging format (Tape & Reel, Cut Tape, or unspecified)
• Manufacturer identity

Parts meeting all critical parameters with equal or superior current and power ratings are classified as direct substitutes. Parts with higher peak pulse current and power dissipation capability provide enhanced transient protection margin.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain identical voltage specifications (24V reverse standoff, 26.7V breakdown minimum, 38.9V clamping maximum) and surface mount DO-214AB packaging, ensuring direct functional compatibility with the SMCJ24CA-M3/9AT.

Direct Electrical Equivalents (1:1 Substitution): SMCJ24CA-E3/57T, SMCJ24CA (MDD), SMCJ24CA-13-F, and SMCJ24CA-TP all match the 38.6A peak pulse current and 1500W power dissipation of the main part. These parts are interchangeable for applications requiring the specified transient protection level. All maintain ROHS3 compliance and MSL 1 rating.

Enhanced Performance Alternatives: 5.0SMDJ24CA, SMDJ24CA, and SMLJ24CA provide higher peak pulse current (129A, 77.2A, and 77.2A respectively) and increased power dissipation (5000W and 3000W respectively) while maintaining identical voltage clamping characteristics. These parts are suitable for applications requiring greater transient energy absorption capacity.

Temperature Consideration: SMCJ24CA-TP extends the upper operating temperature to 175°C, compared to 150°C for the main part and most substitutes. SMCJ24CA (MDD) operates to a minimum of -50°C rather than -55°C.

All parts are active in production status with full RoHS3 compliance and REACH unaffected or affected status as specified.

Frequently Asked Questions (FAQ)

Q: Can SMCJ24CA-E3/57T replace SMCJ24CA-M3/9AT? A: Yes. Both parts share identical electrical specifications (24V standoff, 38.9V clamping, 38.6A peak pulse, 1500W power) and DO-214AB packaging. The difference is packaging format: E3/57T is Cut Tape while M3/9AT is Tape & Reel. Electrical performance is equivalent.

Q: What is the difference between SMCJ24CA and SMDJ24CA? A: Both maintain the same voltage ratings and clamping characteristics. SMDJ24CA provides higher peak pulse current (77.2A vs. 38.6A) and power dissipation (3000W vs. 1500W). SMDJ24CA is suitable for applications requiring enhanced transient protection margin.

Q: Can I use 5.0SMDJ24CA as a direct replacement? A: Yes, with consideration for application requirements. 5.0SMDJ24CA maintains identical voltage specifications and DO-214AB packaging but provides significantly higher peak pulse current (129A) and power dissipation (5000W). This part is suitable for high-energy transient environments and provides superior protection margin.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the compliance requirement of SMCJ24CA-M3/9AT.

Q: Does operating temperature range affect substitution? A: Operating temperature range does not prevent substitution. SMCJ24CA-TP extends to 175°C (vs. 150°C standard), and SMCJ24CA (MDD) operates to -50°C minimum (vs. -55°C standard). Select based on application temperature requirements.

Q: What packaging formats are available? A: Substitute parts are available in Tape & Reel (TR), Cut Tape (CT), and unspecified formats. All maintain the same DO-214AB physical package. Select based on assembly process requirements.

Q: Can I substitute based on manufacturer preference? A: Yes. Vishay, MDD, Diodes Incorporated, Micro Commercial Co, MDE Semiconductor Inc, Alpha & Omega Semiconductor Inc., and Bourns Inc. all provide electrically equivalent parts. Manufacturer selection may be based on supply availability, lead time, or procurement agreements.