SMCJ12CE3/TR13

Part Overview

The SMCJ12CE3/TR13 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 12V reverse standoff voltage and 22V maximum clamping voltage, delivering 68.2A peak pulse current with 1500W peak pulse power dissipation. The device is packaged in DO-214AB (SMC) format and is RoHS3 compliant with unlimited moisture sensitivity level rating. Active product status indicates current availability and manufacturer support, making alternative sourcing necessary for supply chain redundancy and cost optimization.

Substiute Parts

SMCJ12CE3/TR13

Microchip TechnologyIn Stock: 868SMCJ12CE3/TR13 Datasheet

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5.0SMDJ12CA

MDE Semiconductor IncIn Stock: 93575.0SMDJ12CA Datasheet

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SMCJ12CA

MeritekIn Stock: 39221SMCJ12CA Datasheet

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SMCJ12CA

MeritekIn Stock: 39221SMCJ12CA Datasheet

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SMCJ12CA-13-F

Diodes IncorporatedIn Stock: 3471SMCJ12CA-13-F Datasheet

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SMDJ12CA

Alpha & Omega Semiconductor Inc.In Stock: 35453SMDJ12CA Datasheet

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SMDJ12CA-HR

LittelfuseIn Stock: 1453SMDJ12CA-HR Datasheet

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SMLJ12CA

Bourns Inc.In Stock: 6132SMLJ12CA Datasheet

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SMLJ13CA

Bourns Inc.In Stock: 24844SMLJ13CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMCJ12CE3/TR13 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - Reverse Standoff: 12V (exact match required)
• Voltage - Breakdown (Min): 13.3V (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: DO-214AB, SMC (exact match required)
• Type: Zener, Bidirectional (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Permissible Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: 19.9V to 22V range
• Current - Peak Pulse (10/1000µs): 68.2A minimum
• Power - Peak Pulse: 1500W minimum
• Operating Temperature: -55°C to -65°C lower limit; 150°C upper limit fixed
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts maintain the core 12V reverse standoff and 13.3V breakdown voltage specifications while accommodating variations in clamping voltage, peak current, and power dissipation within acceptable electrical operating ranges.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) certification. The following selection logic applies based on product status and compliance:

Preferred Substitutes (Exact 12V Standoff): SMCJ12CA (Meritek), SMCJ12CA-13-F (Diodes Incorporated), SMDJ12CA (Alpha & Omega Semiconductor Inc.), SMDJ12CA-HR (Littelfuse), and SMLJ12CA (Bourns Inc.) all match the SMCJ12CE3/TR13 at the 12V reverse standoff specification. All are active products with full RoHS3 compliance. SMDJ12CA-HR offers extended operating temperature range (-65°C to 150°C) matching the original part's lower temperature limit and provides higher current handling (150.8A) and power dissipation (3000W).

Extended Range Substitute: 5.0SMDJ12CA (MDE Semiconductor Inc.) provides the highest power dissipation capability (5000W) and peak current (252A), supporting designs requiring maximum transient energy absorption while maintaining 12V standoff voltage and RoHS3 compliance.

Alternative Voltage Rating: SMLJ13CA (Bourns Inc.) operates at 13V reverse standoff with 14.4V breakdown and 21.5V clamping voltage. Selection of this part is limited to applications where 13V standoff voltage is permissible, as it deviates from the specified 12V parameter.

Frequently Asked Questions (FAQ)

Q: Can SMLJ13CA be used as a direct replacement for SMCJ12CE3/TR13?

A: No. SMLJ13CA operates at 13V reverse standoff voltage, 14.4V breakdown voltage, and 21.5V clamping voltage. These parameters differ from the SMCJ12CE3/TR13 specifications of 12V standoff, 13.3V breakdown, and 22V clamping. Application of a 13V rated device in a 12V circuit may result in insufficient protection margin.

Q: What is the key difference between SMCJ12CA variants from different manufacturers?

A: All SMCJ12CA variants (Meritek, Diodes Incorporated) maintain identical electrical specifications at 12V standoff, 13.3V breakdown, and 19.9V clamping. Manufacturing variations exist in peak current handling (75.3A to 75.38A) and are negligible. Selection may be based on inventory availability and delivery lead time.

Q: Does package format vary among substitutes?

A: No. All substitute parts are packaged in DO-214AB (SMC) surface-mount format, matching the original part's mechanical specifications. This ensures drop-in compatibility with existing printed circuit board layouts.

Q: Can higher power-rated substitutes impact circuit performance?

A: Higher power dissipation ratings (3000W or 5000W versions versus 1500W original) indicate greater transient energy absorption capability. These parts are electrically interchangeable when 12V standoff voltage is maintained, as clamping voltage and current specifications remain within acceptable tolerance ranges.

Q: Which substitute part offers the best low-temperature performance?

A: SMDJ12CA-HR and SMCJ12CE3/TR13 both specify -65°C minimum operating temperature, providing equivalent low-temperature performance. Other substitutes specify -55°C minimum, which may limit suitability for extreme cold environment applications.