SMBJ60C Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The SMBJ60C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The device features a 60V reverse standoff voltage rating with a 101.64V maximum clamping voltage at peak pulse current. The SMBJ60C is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives from multiple manufacturers provide identical electrical performance within the specified parameter ranges while maintaining compatibility with DO-214AA (SMB) package footprints.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	60	V
Voltage - Breakdown (Min)	63.18	V
Voltage - Clamping (Max) @ Ipp	101.64	V
Current - Peak Pulse (10/1000µs)	6.2	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Operating Temperature Range	-65 to 150	°C (TJ)
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the SMBJ60C is determined by strict equivalence across the following critical electrical and mechanical parameters:

Voltage - Reverse Standoff: 60V (exact match required)
Voltage - Clamping (Max) @ Ipp: 96.8V to 101.64V (acceptable range for functional equivalence)
Current - Peak Pulse (10/1000µs): 6.2A (exact match required)
Power - Peak Pulse: 600W (exact match required)
Package / Case: DO-214AA, SMB (mechanical compatibility required)
Mounting Type: Surface Mount (assembly process compatibility)
RoHS Status: ROHS3 Compliant (regulatory compliance)
Moisture Sensitivity Level: 1 (Unlimited) (handling and storage compatibility)

All substitute parts listed maintain these parameters within acceptable engineering tolerances. Variations in clamping voltage (96.8V vs. 101.64V) remain within the functional specification for general-purpose transient suppression applications, as both values provide adequate protection at the specified peak pulse current.

Parameter Comparison

Parameter	SMBJ60C (Littelfuse)	SMBJ60CA (MDD)	SMBJ60CA-13-F (Diodes Inc.)	SMBJ60CA-E3/52 (Vishay)	SMBJ60CA-E3/5B (Vishay)	SMBJ60CA-TP (MCC)
Voltage - Reverse Standoff (Typ)	60V	60V	60V	60V	60V	60V
Voltage - Breakdown (Min)	63.18V	66.7V	66.7V	66.7V	66.7V	66.7V
Voltage - Clamping (Max) @ Ipp	101.64V	96.8V	96.8V	96.8V	96.8V	96.8V
Current - Peak Pulse (10/1000µs)	6.2A	6.2A	6.2A	6.2A	6.2A	6.2A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Operating Temperature Range	-65 to 150°C	-50 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 175°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain continuity. Each substitute maintains ROHS3 compliance and MSL Level 1 rating, meeting regulatory requirements and handling specifications equivalent to the original SMBJ60C.

The primary distinction among substitutes is operating temperature range. The SMBJ60CA-TP from Micro Commercial Co. extends the upper temperature limit to 175°C, compared to 150°C for other alternatives and the original part. This extended range provides additional thermal margin for applications operating near maximum junction temperature limits.

All substitute parts are packaged in DO-214AA (SMB) format with surface-mount assembly compatibility. Selection among active alternatives should be based on supplier availability, lead time, and procurement cost, as electrical and mechanical performance are functionally equivalent across all options.

Frequently Asked Questions (FAQ)

Q: Can SMBJ60CA parts directly replace SMBJ60C in existing designs?

A: Yes. All substitute parts maintain the same 60V reverse standoff voltage, 6.2A peak pulse current, and 600W peak pulse power rating. The DO-214AA (SMB) package footprint is identical, enabling direct PCB-level substitution without layout modifications.

Q: What is the significance of the clamping voltage difference (101.64V vs. 96.8V)?

A: Both clamping voltages fall within acceptable ranges for general-purpose transient suppression. The 96.8V clamping voltage of substitute parts provides slightly tighter voltage regulation at peak pulse current, which is functionally equivalent for protection purposes. The difference does not affect circuit compatibility.

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

A: The original SMBJ60C operates from -65°C to 150°C. Most substitutes operate from -55°C to 150°C, representing a 10°C reduction in the lower temperature limit. The SMBJ60CA-TP extends to 175°C at the upper limit. For applications requiring the full -65°C lower limit, design verification is necessary. For standard industrial applications (-40°C to 85°C ambient), all substitutes are suitable.

Q: Do all substitutes meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ60C specifications. REACH compliance status is unaffected for all active alternatives.

Q: What packaging options are available for these substitutes?

A: All substitute parts are supplied in Tape & Reel (TR) format for automated assembly. The DO-214AA (SMB) component package remains consistent across all options, ensuring compatibility with standard pick-and-place equipment and reflow soldering processes.

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