SMBJ28CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ28CA-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 28V reverse standoff voltage and provides 45.4V maximum clamping voltage at peak pulse current. The SMBJ28CA-13 is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ28CA-13
Manufacturer	Diodes Incorporated
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	28V
Voltage - Breakdown (Min)	31.1V
Voltage - Clamping (Max) @ Ipp	45.4V
Current - Peak Pulse (10/1000µs)	13.2A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Bidirectional Channels	1
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ28CA-13 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 28V
Voltage - Breakdown (Min): 31.1V
Voltage - Clamping (Max) @ Ipp: 45.4V
Current - Peak Pulse (10/1000µs): 13.2A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1

Substitute parts must maintain electrical equivalence across all voltage parameters and support the specified peak pulse current rating. Package and mounting type must remain identical to ensure PCB compatibility without design modification. Peak pulse current values within the specified range are acceptable provided they do not fall below the original 13.2A requirement.

Parameter Comparison

Parameter	SMBJ28CA-13 (Main)	SMBJ28CA-13-F	SMBJ28CA (MDD)	SMBJ28CA-TP (MCC)	SMBJ28CA-TR (STM)
Manufacturer	Diodes Inc.	Diodes Inc.	MDD	Micro Commercial Co	STMicroelectronics
Voltage - Reverse Standoff (Typ)	28V	28V	28V	28V	28V
Voltage - Breakdown (Min)	31.1V	31.1V	31.1V	31.1V	31.1V
Voltage - Clamping (Max) @ Ipp	45.4V	45.4V	45.4V	45.4V	45.4V
Current - Peak Pulse (10/1000µs)	13.2A	13.2A	13.3A	13.2A	13.8A
Power - Peak Pulse	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 150°C
Product Status	Discontinued	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the SMBJ28CA-13 across critical voltage and current parameters. Selection should prioritize active product status and compliance requirements:

SMBJ28CA-13-F (Diodes Incorporated) provides direct manufacturer continuity with identical electrical specifications and ROHS3 compliance. This part is the preferred substitute when maintaining the original manufacturer lineage is required.

SMBJ28CA-TR (STMicroelectronics) is designated as the manufacturer-recommended alternative. It delivers the highest peak pulse current rating (13.8A) and maintains full electrical compatibility. ROHS3 compliance and active product status support long-term availability.

SMBJ28CA-TP (Micro Commercial Co) offers the widest operating temperature range (-55°C ~ 175°C) and is suitable for applications requiring extended thermal performance. ROHS3 compliance and active status ensure procurement continuity.

SMBJ28CA (MDD) provides equivalent electrical performance with ROHS3 compliance and active product status. The operating temperature range is -50°C ~ 150°C, which is acceptable for most general-purpose applications.

All substitute parts are available in DO-214AA/SMB package format and require no PCB layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ28CA-13-F be used as a direct replacement for SMBJ28CA-13?

A: Yes. SMBJ28CA-13-F is manufactured by Diodes Incorporated and maintains identical electrical specifications: 28V reverse standoff, 31.1V breakdown minimum, 45.4V clamping maximum, and 13.2A peak pulse current. Both use DO-214AA/SMB packaging. The primary difference is ROHS3 compliance and active product status of the -13-F variant.

Q: What is the difference between the substitute parts in terms of peak pulse current?

A: SMBJ28CA-13, SMBJ28CA-13-F, and SMBJ28CA-TP are rated at 13.2A peak pulse current. SMBJ28CA (MDD) is rated at 13.3A, and SMBJ28CA-TR (STMicroelectronics) is rated at 13.8A. All values exceed the minimum 13.2A requirement and are electrically compatible.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant. The original SMBJ28CA-13 is RoHS non-compliant. If RoHS compliance is a design requirement, any of the substitute parts satisfy this criterion.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature ranges vary among substitutes. SMBJ28CA-TP supports -55°C ~ 175°C, while others support -55°C ~ 150°C or -50°C ~ 150°C. Selection should match the application's thermal requirements. For standard -55°C ~ 150°C applications, all parts are suitable.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use identical DO-214AA/SMB packaging and surface-mount configuration. No PCB layout or footprint modifications are required for substitution.

Q: Which substitute part has the longest product lifecycle?

A: All substitute parts have active product status, indicating ongoing manufacturer support. SMBJ28CA-13-F (Diodes Incorporated) and SMBJ28CA-TR (STMicroelectronics) are from established manufacturers with strong market presence and extended product availability.

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