SMBJ14CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ14CA-13 is a Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 14V reverse standoff voltage and provides 23.2V maximum clamping voltage at peak pulse current of 25.8A. The SMBJ14CA-13 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	14	V
Voltage - Breakdown (Min)	15.6	V
Voltage - Clamping (Max) @ Ipp	23.2	V
Current - Peak Pulse (10/1000µs)	25.8	A
Power - Peak Pulse	600	W
Bidirectional Channels	1	—
Type	Zener	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55°C ~ 150°C	TJ

Substitute Part Grouping Explanation

Substitute parts for the SMBJ14CA-13 are qualified based on matching the following critical electrical and mechanical parameters:

Voltage - Reverse Standoff: 14V
Voltage - Clamping (Max) @ Ipp: 23.2V
Current - Peak Pulse (10/1000µs): 25.8A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener

All identified substitutes maintain these core specifications, ensuring functional equivalence in transient voltage suppression circuits. Variations in operating temperature range, RoHS compliance status, and packaging format (bulk versus tape & reel) do not affect electrical performance but may influence procurement and regulatory requirements.

Parameter Comparison

Parameter	SMBJ14CA-13 (Diodes Inc.)	SMBJ14CA-13-F (Diodes Inc.)	SMBJ14CA-TP (Micro Commercial Co)	SMBJ14CA (MDD)
Voltage - Reverse Standoff (Typ)	14V	14V	14V	14V
Voltage - Breakdown (Min)	15.6V	15.6V	15.6V	15.6V
Voltage - Clamping (Max) @ Ipp	23.2V	23.2V	23.2V	23.2V
Current - Peak Pulse (10/1000µs)	25.8A	25.8A	25.8A	25.9A
Power - Peak Pulse	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C	-50°C ~ 150°C
Product Status	Discontinued	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SMBJ14CA-13-F (Diodes Incorporated) is the direct equivalent substitute, offering identical electrical specifications and operating temperature range. This part is currently in active production status with ROHS3 compliance and tape & reel packaging, making it suitable for automated assembly processes.

SMBJ14CA-TP (Micro Commercial Co) provides equivalent electrical performance with an extended operating temperature range to 175°C, offering thermal margin for high-temperature applications. This part is actively produced and ROHS3 compliant.

SMBJ14CA (MDD) is a manufacturer-recommended alternative with marginally higher peak pulse current (25.9A versus 25.8A) and active production status with ROHS3 compliance. Operating temperature range is -50°C to 150°C, which is narrower at the low end compared to the original specification.

All three substitutes maintain the critical electrical parameters required for circuit protection and are available in the same DO-214AA (SMB) package format. Selection should prioritize product availability, supply chain requirements, and compliance certifications applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can SMBJ14CA-13-F be used as a direct replacement for SMBJ14CA-13?

A: Yes. SMBJ14CA-13-F is electrically and mechanically identical to SMBJ14CA-13, with the primary difference being packaging format (tape & reel versus bulk) and active production status. Both operate at 14V reverse standoff with 23.2V clamping voltage and 25.8A peak pulse current.

Q: What is the difference between SMBJ14CA-TP and the original SMBJ14CA-13?

A: SMBJ14CA-TP maintains all critical electrical specifications but extends the maximum operating temperature to 175°C compared to 150°C for SMBJ14CA-13. The package format is identical (DO-214AA, SMB). This part is manufactured by Micro Commercial Co rather than Diodes Incorporated.

Q: Is the SMBJ14CA (MDD) suitable for applications requiring the full -55°C to 150°C temperature range?

A: SMBJ14CA (MDD) operates from -50°C to 150°C, which does not cover the full lower temperature range of the original SMBJ14CA-13 (-55°C minimum). Applications requiring operation below -50°C should use SMBJ14CA-13-F or SMBJ14CA-TP instead.

Q: Are all substitute parts ROHS3 compliant?

A: SMBJ14CA-13-F, SMBJ14CA-TP, and SMBJ14CA (MDD) are all ROHS3 compliant. The original SMBJ14CA-13 is RoHS non-compliant. Compliance status should be verified against end-product regulatory requirements.

Q: Do packaging differences affect circuit performance?

A: No. Tape & reel (TR) and bulk packaging formats contain identical components. Packaging selection is determined by assembly process requirements and procurement volume, not electrical performance.

Q: What is the peak pulse current specification for SMBJ14CA (MDD)?

A: SMBJ14CA (MDD) specifies 25.9A peak pulse current, which is marginally higher than the 25.8A specification for SMBJ14CA-13. This difference is within normal manufacturing tolerance and does not affect substitution suitability.

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