SMBJ12CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ12CE3/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 provides clamping at 22V maximum, with a peak pulse current rating of 27.3A. The component is supplied in Tape & Reel packaging with DO-214AA (SMB) form factor and maintains active product status with full RoHS3 compliance.

Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and operational parameters that ensure functional interchangeability within the same application circuit.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	12	V
Voltage - Breakdown (Min)	13.3	V
Voltage - Clamping (Max) @ Ipp	22	V
Current - Peak Pulse (10/1000µs)	27.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SMBJ12CE3/TR13 is determined by electrical parameter alignment across the following critical specifications:

Primary Matching Criteria:

Voltage - Reverse Standoff (Typ): 12V
Voltage - Breakdown (Min): 13.3V
Bidirectional Channels: 1
Type: Zener
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB

Secondary Compatibility Factors:

Voltage - Clamping (Max) @ Ipp: 22V (main part) to 19.9V (substitute parts)
Current - Peak Pulse (10/1000µs): 27.3A (main part) to 30.2–31A (substitute parts)
Power - Peak Pulse: 600W (all parts)
Operating Temperature Range: -65°C to 150°C (main part) with variations in substitute parts
RoHS3 Compliance and MSL Level 1 (all parts)

Substitute parts maintain identical reverse standoff and breakdown voltages, ensuring proper circuit protection thresholds. Clamping voltage variations (22V vs. 19.9V) and peak pulse current differences (27.3A vs. 30.2–31A) remain within the functional envelope for general-purpose TVS applications. All substitute parts are active products with full regulatory compliance.

Parameter Comparison

Parameter	SMBJ12CE3/TR13 (Microchip)	SMBJ12CA (EVVO Semi)	SMBJ12CA-13-F (Diodes Inc.)	SMBJ12CA-TP (MCC)	SMBJ12CA-TR (STMicroelectronics)
Manufacturer	Microchip Technology	EVVO Semi	Diodes Incorporated	Micro Commercial Co	STMicroelectronics
Voltage - Reverse Standoff (Typ)	12V	12V	12V	12V	12V
Voltage - Breakdown (Min)	13.3V	13.3V	13.3V	13.3V	13.3V
Voltage - Clamping (Max) @ Ipp	22V	19.9V	19.9V	19.9V	19.9V
Current - Peak Pulse (10/1000µs)	27.3A	30.2A	30.2A	30.2A	31A
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-65 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Type	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full RoHS3 compliance, ensuring regulatory alignment with the original SMBJ12CE3/TR13. Selection among substitute options is based on the following engineering considerations:

Electrical Performance: All substitute parts share identical reverse standoff (12V) and breakdown (13.3V) voltages, guaranteeing equivalent circuit protection thresholds. The clamping voltage reduction from 22V to 19.9V in substitute parts represents improved transient suppression performance. Peak pulse current ratings of 30.2A to 31A exceed the original 27.3A specification, providing additional margin for transient energy dissipation.

Temperature Operating Range: The SMBJ12CE3/TR13 operates from -65°C to 150°C. Substitute parts from Diodes Incorporated (SMBJ12CA-13-F) and STMicroelectronics (SMBJ12CA-TR) operate from -55°C to 150°C, suitable for applications not requiring the extended lower temperature range. The SMBJ12CA-TP from Micro Commercial Co extends the upper operating limit to 175°C, providing enhanced thermal margin for high-temperature environments.

Packaging and Availability: All parts utilize the DO-214AA (SMB) surface-mount package, ensuring mechanical compatibility with existing PCB layouts. Packaging formats vary between Tape & Reel (TR) and Cut Tape (CT) with Digi-Reel options. Inventory levels range from 3,007 to 112,045 units, supporting both prototype and production-volume requirements.

Compliance and Certifications: All substitute parts carry REACH Unaffected status and EAR99 ECCN classification, matching the regulatory profile of the original component. MSL Level 1 (Unlimited) moisture sensitivity applies uniformly across all options.

Frequently Asked Questions (FAQ)

Q: Can SMBJ12CA (EVVO Semi) directly replace SMBJ12CE3/TR13 (Microchip)?

A: Yes. Both parts share identical reverse standoff (12V), breakdown (13.3V), and peak pulse power (600W) specifications. The SMBJ12CA provides equivalent circuit protection with improved clamping performance (19.9V vs. 22V) and higher peak pulse current (30.2A vs. 27.3A). Both are RoHS3 compliant with MSL Level 1 and operate across overlapping temperature ranges (-65°C to 150°C for the original; -65°C to 150°C for the substitute).

Q: What is the difference between SMBJ12CA-TP and SMBJ12CA-TR?

A: Both parts are electrically identical with 12V reverse standoff and 19.9V clamping voltage. The primary differences are manufacturer (Micro Commercial Co vs. STMicroelectronics) and operating temperature range. SMBJ12CA-TP extends to 175°C maximum junction temperature, while SMBJ12CA-TR operates to 150°C. SMBJ12CA-TP is suitable for applications requiring higher thermal tolerance.

Q: Are all substitute parts compatible with the DO-214AA (SMB) footprint?

A: Yes. All identified substitute parts use the DO-214AA (SMB) surface-mount package, ensuring direct mechanical compatibility with PCB layouts designed for the SMBJ12CE3/TR13. No footprint modifications are required.

Q: What is the significance of the clamping voltage difference (22V vs. 19.9V)?

A: The clamping voltage defines the maximum voltage across the TVS diode during transient suppression. The substitute parts' lower clamping voltage (19.9V) provides tighter voltage regulation and improved transient suppression compared to the original 22V specification. This represents enhanced performance for general-purpose protection applications.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. All substitute parts are RoHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes. MSL Level 1 (Unlimited) moisture sensitivity applies uniformly, eliminating moisture-related handling constraints during assembly and storage.

Q: Which substitute part offers the widest operating temperature range?

A: The SMBJ12CA-TP (Micro Commercial Co) operates from -55°C to 175°C, providing the widest upper temperature margin. The original SMBJ12CE3/TR13 extends to -65°C minimum, which is not matched by any substitute part. For applications requiring the full -65°C to 150°C range, the original part is specified.

Q: Can packaging format (Tape & Reel vs. Cut Tape) affect substitution?

A: Packaging format does not affect electrical or mechanical compatibility. Tape & Reel (TR) packaging is standard for automated assembly lines, while Cut Tape (CT) with Digi-Reel options supports lower-volume or manual assembly processes. Selection depends on manufacturing workflow requirements, not circuit performance.

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