SMCJ22CA-TP Equivalent & Substitute Parts

Part Overview

The SMCJ22CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 22V reverse standoff voltage and provides 35.5V clamping at peak pulse current, delivering 1500W peak pulse power dissipation in a DO-214AB (SMC) package. The component is Active status and ROHS3 compliant, making it suitable for modern electronic designs requiring transient suppression.

Equivalent and substitute parts are identified based on matching or exceeding critical electrical parameters: reverse standoff voltage (22V), breakdown voltage (24.4V minimum), clamping voltage (35.5V maximum), and package compatibility (DO-214AB/SMC surface mount). Substitutes may vary in peak pulse current capacity and power dissipation, provided they maintain voltage specifications and mechanical compatibility.

Substiute Parts

SMCJ22CA-TP

Micro Commercial CoIn Stock: 4043SMCJ22CA-TP Datasheet

Current PartRFQ

SMCJ22CA

MeritekIn Stock: 56161SMCJ22CA Datasheet

DirectRFQ

SMCJ22CA

MeritekIn Stock: 56161SMCJ22CA Datasheet

DirectRFQ

SMCJ22CA

MeritekIn Stock: 56161SMCJ22CA Datasheet

DirectRFQ

SMCJ22CA-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 34276SMCJ22CA-E3/57T Datasheet

DirectRFQ

5.0SMDJ22CA

MDE Semiconductor IncIn Stock: 272155.0SMDJ22CA Datasheet

SimilarRFQ

5.0SMDJ22CA-T7

Littelfuse Inc.In Stock: 18525.0SMDJ22CA-T7 Datasheet

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SMDJ22CA

Alpha & Omega Semiconductor Inc.In Stock: 3166SMDJ22CA Datasheet

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SMLJ22CA

Bourns Inc.In Stock: 9844SMLJ22CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical compatibility with the SMCJ22CA-TP:

Direct Equivalents maintain identical voltage specifications (22V reverse standoff, 24.4V breakdown minimum, 35.5V clamping maximum) and peak pulse current within ±5% tolerance. These parts are interchangeable in applications where the original 1500W peak pulse power is sufficient.

Higher-Capacity Alternatives exceed the peak pulse current and power dissipation specifications while maintaining all voltage parameters. These parts provide enhanced transient suppression capability and are suitable for applications requiring greater energy absorption without circuit redesign.

Critical Substitution Parameters:

• Voltage - Reverse Standoff: 22V (fixed)
• Voltage - Breakdown (Min): 24.4V (fixed)
• Voltage - Clamping (Max) @ Ipp: 35.5V (fixed)
• Package / Case: DO-214AB, SMC (fixed)
• Bidirectional Channels: 1 (fixed)
• Type: Zener (fixed)

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with modern manufacturing and storage requirements. Selection between direct equivalents and higher-capacity alternatives depends on application transient energy requirements.

Direct Equivalents (SMCJ22CA, SMCJ22CA-E3/57T): Select when the original 1500W peak pulse power specification is adequate and operating temperature range of -55°C to 150°C is acceptable. The Vishay SMCJ22CA-E3/57T offers identical electrical performance with TransZorb® series designation and established supply availability.

Higher-Capacity Alternatives (5.0SMDJ22CA, 5.0SMDJ22CA-T7, SMDJ22CA, SMLJ22CA): Select when application transient events exceed 1500W or when enhanced margin is required. These parts provide 3000W to 5000W peak pulse power while maintaining voltage specifications. The 5.0SMDJ22CA-T7 extends the lower operating temperature to -65°C, suitable for extreme environment applications.

All parts are Active status with established supply chains and REACH compliance documentation available.

Frequently Asked Questions (FAQ)

Q: Can SMCJ22CA-TP be replaced with SMCJ22CA from Meritek?

A: Yes. Both parts maintain identical voltage specifications (22V reverse standoff, 24.4V breakdown, 35.5V clamping) and equivalent peak pulse current (42.3A vs 42.25A). The operating temperature range differs (-55°C to 175°C vs -55°C to 150°C); verify application requirements before substitution.

Q: What is the difference between SMCJ22CA and 5.0SMDJ22CA?

A: Both maintain identical voltage parameters and DO-214AB package compatibility. The 5.0SMDJ22CA provides higher peak pulse current (141A vs 42.3A) and power dissipation (5000W vs 1500W). Select the higher-capacity part only if application transient energy requirements exceed 1500W.

Q: Are all substitute parts in the same package?

A: Yes. All listed parts use DO-214AB (SMC) surface-mount package, ensuring mechanical and footprint compatibility on PCB assemblies.

Q: Which substitute offers the widest operating temperature range?

A: The SMCJ22CA-TP (original part) operates from -55°C to 175°C. The 5.0SMDJ22CA-T7 extends the lower limit to -65°C, suitable for extreme cold environments, while maintaining the same upper limit of 150°C.

Q: Are all parts RoHS compliant?

A: Yes. All listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting modern environmental and manufacturing standards.

Q: Can I use SMLJ22CA as a direct replacement?

A: Yes, with consideration for enhanced capability. SMLJ22CA maintains all voltage specifications and package compatibility while providing 3000W peak pulse power (double the original 1500W). This represents a performance upgrade suitable for applications requiring greater transient suppression margin.