SMBJ13C-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ13C-E3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 13V reverse standoff voltage and provides 23.8V clamping at peak pulse current. The product is currently obsolete, making equivalent substitutes necessary for ongoing design support and component procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ13C-E3/5B
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Product Status	Obsolete
Type	Zener
Voltage - Reverse Standoff (Typ)	13V
Voltage - Breakdown (Min)	14.4V
Voltage - Clamping (Max) @ Ipp	23.8V
Current - Peak Pulse (10/1000µs)	25.2A
Power - Peak Pulse	600W
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ13C-E3/5B is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 13V
Voltage - Breakdown (Min): 14.4V
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, and package specifications to ensure direct PCB compatibility and circuit protection performance. Variations in clamping voltage and peak pulse current are acceptable within the same voltage class, as these parameters reflect manufacturing tolerance bands and do not affect functional interchangeability in general-purpose applications.

Parameter Comparison

Parameter	SMBJ13C-E3/5B (Main)	SMBJ13CA-E3/5B	SMBJ13CE3/TR13	SMBJ13CA (MDD)	SMBJ13CA-13-F	SMBJ13CA-TR	SZ1SMB13CAT3G
Manufacturer	Vishay	Vishay	Microchip	MDD	Diodes Inc.	STMicroelectronics	Littelfuse
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	13V	13V	13V	13V	13V	13V	13V
Voltage - Breakdown (Min)	14.4V	14.4V	14.4V	14.4V	14.4V	14.4V	14.4V
Voltage - Clamping (Max) @ Ipp	23.8V	21.5V	23.8V	21.5V	21.5V	21.5V	21.5V
Current - Peak Pulse (10/1000µs)	25.2A	27.9A	25.2A	28A	27.9A	29A	27.9A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain full compatibility with the SMBJ13C-E3/5B across critical electrical and mechanical parameters. Selection should prioritize active product status and supply chain availability.

SMBJ13CA-E3/5B (Vishay) and SMBJ13CE3/TR13 (Microchip) provide the closest electrical match, with identical clamping voltage specifications. SMBJ13CA-E3/5B offers the advantage of active product status from the original manufacturer.

SMBJ13CA-TR (STMicroelectronics) and SZ1SMB13CAT3G (Littelfuse) provide alternative sourcing with active status. SZ1SMB13CAT3G includes automotive-grade qualification (AEC-Q101) and extended temperature range (-65°C to 150°C), suitable for applications requiring enhanced reliability margins.

SMBJ13CA (MDD) and SMBJ13CA-13-F (Diodes Incorporated) are available in high inventory volumes and represent cost-effective alternatives with full parameter compatibility.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SMBJ13C-E3/5B with any of these substitutes on my PCB?

A: Yes. All listed substitutes share identical reverse standoff voltage (13V), breakdown voltage (14.4V), and DO-214AA/SMB package specifications. No PCB layout modifications are required.

Q: What is the difference between parts with 23.8V clamping and 21.5V clamping?

A: Both values fall within the acceptable clamping voltage range for the 13V voltage class. The variation reflects manufacturing tolerance bands and does not affect functional interchangeability in general-purpose protection circuits. Selection depends on application-specific clamping requirements.

Q: Why do some substitutes have higher peak pulse current ratings?

A: Peak pulse current variations (25.2A to 29A) represent manufacturing tolerance differences within the same device class. All parts deliver 600W peak pulse power and are suitable for identical circuit protection applications.

Q: Is the automotive-qualified SZ1SMB13CAT3G suitable for non-automotive applications?

A: Yes. Automotive qualification indicates enhanced reliability and stricter manufacturing controls. This part is fully compatible with general-purpose applications and may provide additional margin for demanding environments.

Q: Do I need to verify temperature range compatibility?

A: All substitutes operate within -50°C to -65°C minimum and 150°C maximum. Verify your application's operating temperature range falls within these bounds. SZ1SMB13CAT3G and SMBJ13CE3/TR13 offer the widest temperature range (-65°C to 150°C).

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed parts carry ROHS3 Compliant status and MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.

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