SMBJ58C Equivalent & Substitute Parts

Part Overview

The SMBJ58C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 58V reverse standoff voltage and provides 600W peak pulse power dissipation in a DO-214AA (SMB) package. The SMBJ58C is currently listed as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, and thermal characteristics while meeting the same packaging and compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	58	V
Voltage - Breakdown (Min)	61.02	V
Voltage - Clamping (Max) @ Ipp	98.28	V
Current - Peak Pulse (10/1000µs)	6.5	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Operating Temperature Range	-65 to 150	°C (TJ)
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ58C are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 58V (exact match required)
Voltage - Clamping (Max) @ Ipp: 93.6V to 98.28V (acceptable range for transient suppression)
Current - Peak Pulse (10/1000µs): 6.4A to 6.7A (within operational tolerance)
Power - Peak Pulse: 600W (exact match)
Package / Case: DO-214AA, SMB (mechanical compatibility)
Mounting Type: Surface Mount (assembly compatibility)
RoHS Status: ROHS3 Compliant (regulatory requirement)
Moisture Sensitivity Level: 1 (Unlimited) (handling and storage compatibility)

Secondary Considerations:

Operating Temperature Range: -55°C to 150°C or -65°C to 150°C (thermal envelope)
Product Status: Active preferred (obsolete parts present supply risk)
Bidirectional Channels: 1 (functional requirement)

Substitute parts meeting these criteria are functionally equivalent for circuit protection applications requiring 58V standoff voltage with 600W peak pulse capability in SMB surface-mount form factor.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (Max) @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp (°C)	Product Status
SMBJ58C	Littelfuse Inc.	58	98.28	6.5	600	-65 to 150	Obsolete
SMBJ58CA	Good-Ark Semiconductor	58	93.6	6.4	600	-55 to 150	Active
SZ1SMB58CAT3G	Littelfuse Inc.	58	93.6	6.4	600	-65 to 150	Active
SMBJ58CA-13-F	Diodes Incorporated	58	93.6	6.4	600	-55 to 150	Active
SMBJ58CA-E3/5B	Vishay General Semiconductor - Diodes Division	58	93.6	6.4	600	-55 to 150	Active
SMBJ58CA-TP	Micro Commercial Co	58	93.6	6.4	600	-55 to 175	Active
SMBJ58CA-TR	STMicroelectronics	58	93.6	6.7	600	-55 to 150	Active
TV06B580JB-G	Comchip Technology	58	93.6	6.41	600	Not specified	Active

Engineering Selection Recommendations

Primary Recommendation: SZ1SMB58CAT3G (Littelfuse Inc.)

SZ1SMB58CAT3G is the manufacturer-recommended substitute from Littelfuse Inc., the original SMBJ58C manufacturer. This part maintains the identical -65°C to 150°C operating temperature range as the original, ensuring thermal envelope compatibility. It carries AEC-Q101 automotive qualification and ROHS3 compliance. Active product status guarantees long-term availability and supply chain stability.

Secondary Recommendations (Active Status, ROHS3 Compliant):

SMBJ58CA-TP (Micro Commercial Co) offers the widest operating temperature range (-55°C to 175°C), providing additional thermal margin for high-temperature applications. SMBJ58CA-TR (STMicroelectronics) delivers slightly higher peak pulse current (6.7A) within the 600W power envelope, offering enhanced transient suppression capability. Both parts are actively produced with established supply channels.

SMBJ58CA (Good-Ark Semiconductor), SMBJ58CA-13-F (Diodes Incorporated), and SMBJ58CA-E3/5B (Vishay) are functionally equivalent alternatives with active product status and full ROHS3 compliance. These parts are suitable for applications where the -55°C to 150°C operating range meets thermal requirements.

Compatibility Notes:

All recommended substitutes maintain the DO-214AA (SMB) surface-mount package, ensuring direct PCB footprint compatibility. Clamping voltage variation (93.6V vs. 98.28V) remains within acceptable transient suppression tolerance for 58V standoff applications. Peak pulse current ratings (6.4A to 6.7A) are functionally equivalent for 600W power dissipation circuits.

Frequently Asked Questions (FAQ)

Q: Can SMBJ58CA directly replace SMBJ58C without PCB modification?

A: Yes. All substitute parts use the identical DO-214AA (SMB) surface-mount package. No PCB layout changes are required. Electrical performance remains within acceptable tolerance for 58V transient voltage suppression applications.

Q: What is the significance of the clamping voltage difference (98.28V vs. 93.6V)?

A: The SMBJ58C exhibits higher clamping voltage (98.28V) compared to substitute parts (93.6V). This represents improved transient suppression performance in the substitute parts, as lower clamping voltage provides faster voltage limiting during transient events. Both values are within the acceptable operating envelope for 58V standoff TVS diodes and do not affect circuit compatibility.

Q: Why is SZ1SMB58CAT3G recommended over other substitutes?

A: SZ1SMB58CAT3G is the manufacturer-recommended replacement from Littelfuse Inc., the original SMBJ58C manufacturer. It maintains the identical -65°C to 150°C operating temperature range and includes AEC-Q101 automotive qualification. This ensures design continuity and supply chain reliability from the original component source.

Q: Are there temperature range considerations when selecting a substitute?

A: Yes. The SMBJ58C operates from -65°C to 150°C. Most substitutes operate from -55°C to 150°C, reducing the lower temperature limit by 10°C. For applications requiring full -65°C operation, select SZ1SMB58CAT3G or SMBJ58CA-TP. For standard industrial applications (-40°C to 85°C ambient), all substitutes are suitable.

Q: Do all substitutes meet RoHS compliance requirements?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and Moisture Sensitivity Level 1 (Unlimited), matching the original SMBJ58C specifications. All parts are suitable for lead-free assembly processes.

Q: What is the difference between cut tape and tape & reel packaging?

A: Packaging format affects supply and handling only. Cut Tape (CT) is suitable for small-quantity orders and manual assembly. Tape & Reel (TR) is optimized for high-volume automated assembly. Electrical and mechanical specifications remain identical. Select packaging based on production volume and assembly process requirements.

Q: Can SMBJ58CA-TP be used in applications exceeding 150°C junction temperature?

A: SMBJ58CA-TP operates to 175°C junction temperature, providing 25°C additional thermal margin compared to other substitutes. This extended range is suitable for high-temperature circuit protection applications. Verify that circuit design and PCB thermal management support sustained operation at elevated temperatures.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message