1SMB60AT3 Equivalent & Substitute Parts

Part Overview

The 1SMB60AT3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 60V reverse standoff voltage with a 96.8V maximum clamping voltage and 6.2A peak pulse current capability in the DO-214AA (SMB) package. The part is currently obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	60	V
Voltage - Breakdown (Min)	66.7	V
Voltage - Clamping (Max) @ Ipp	96.8	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°C ~ 150°C	TJ
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the 1SMB60AT3 is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 60V
Voltage - Breakdown (Min): 66.7V
Voltage - Clamping (Max) @ Ipp: 96.8V
Current - Peak Pulse (10/1000µs): 6.2A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Unidirectional Channels: 1

Substitute parts are categorized into two groups:

Direct Equivalents maintain all critical electrical parameters (60V standoff, 96.8V clamping, 6.2A peak pulse) and identical package specifications. These parts are fully interchangeable at the circuit level.

Similar Alternatives share the same package and mounting type but may exhibit minor variations in voltage ratings or temperature operating ranges. These parts require circuit-level verification before deployment.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Package	Operating Temperature (°C)	Product Status	RoHS Status
1SMB60AT3	onsemi	60	96.8	6.2	DO-214AA, SMB	-65 ~ 150	Obsolete	Non-compliant
SMBJ60A	MDD	60	96.8	6.2	DO-214AA, SMB	-50 ~ 150	Active	ROHS3 Compliant
SMBJ60A-13-F	Diodes Incorporated	60	96.8	6.2	DO-214AA, SMB	-55 ~ 150	Active	ROHS3 Compliant
SMBJ60A-HR	Littelfuse Inc.	60	96.8	6.2	DO-214AA, SMB	-65 ~ 150	Active	ROHS3 Compliant
SMBJ60A-HRA	Littelfuse Inc.	60	96.8	6.2	DO-214AA, SMB	-65 ~ 150	Active	ROHS3 Compliant
SMBJ60A-TP	Micro Commercial Co	60	96.8	6.2	DO-214AA, SMB	-55 ~ 175	Active	ROHS3 Compliant
SMBJ60AE3/TR13	Microchip Technology	60	96.8	6.2	DO-214AA, SMB	-65 ~ 150	Active	ROHS3 Compliant
PTVS60VP1UP,115	NXP USA Inc.	60	96.8	6.2	SOD-128	-55 ~ 150	Active	AEC-Q101 Automotive
SMBJ58CA-TP	Micro Commercial Co	58	93.6	6.4	DO-214AA, SMB	-55 ~ 175	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

SMBJ60A-HR and SMBJ60A-HRA from Littelfuse Inc. provide the closest match to the original 1SMB60AT3, maintaining the full -65°C to 150°C operating temperature range while offering ROHS3 compliance and active product status. Both parts are available in standard tape and reel packaging.

SMBJ60AE3/TR13 from Microchip Technology matches the original temperature range and offers ROHS3 compliance with established automotive qualification (AEC-Q101).

SMBJ60A-TP from Micro Commercial Co extends the upper operating temperature to 175°C, providing additional thermal margin for high-temperature applications while maintaining all critical electrical parameters.

For Package-Constrained Applications:

PTVS60VP1UP,115 from NXP USA Inc. maintains identical electrical specifications but uses the SOD-128 package instead of DO-214AA (SMB). This part is suitable only when the SOD-128 footprint is acceptable and automotive-grade qualification is required.

For Non-Critical Applications with Minor Parameter Tolerance:

SMBJ58CA-TP from Micro Commercial Co operates at 58V standoff with 93.6V clamping voltage, representing a 3.3% reduction in standoff voltage and 3.3% reduction in clamping voltage. This part is suitable only when circuit design permits these lower voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can SMBJ60A from MDD be used as a direct replacement for 1SMB60AT3?

A: Yes. SMBJ60A maintains identical electrical specifications (60V standoff, 96.8V clamping, 6.2A peak pulse) and the same DO-214AA (SMB) package. The primary difference is the reduced operating temperature range (-50°C to 150°C versus -65°C to 150°C) and ROHS3 compliance status. Verify that the -50°C lower limit meets your application requirements.

Q: Why is PTVS60VP1UP,115 listed as a similar alternative rather than a direct equivalent?

A: While PTVS60VP1UP,115 maintains all critical electrical parameters, it uses the SOD-128 package instead of DO-214AA (SMB). This package difference requires PCB layout modification and is not a drop-in replacement. Select this part only when SOD-128 footprint compatibility exists or when automotive-grade AEC-Q101 qualification is mandatory.

Q: Is SMBJ58CA-TP suitable for applications originally designed for 1SMB60AT3?

A: SMBJ58CA-TP operates at 58V standoff and 93.6V clamping voltage, representing a 3.3% reduction in both parameters. This part is suitable only when circuit analysis confirms that the lower voltage ratings do not compromise overvoltage protection margins. Do not use this part as a general substitute without circuit verification.

Q: What is the difference between SMBJ60A-HR and SMBJ60A-HRA?

A: Both parts from Littelfuse Inc. maintain identical electrical specifications and operating temperature ranges (-65°C to 150°C). The suffix designations (-HR versus -HRA) indicate different internal design or qualification variants. Consult Littelfuse datasheets for specific application suitability.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts except PTVS60VP1UP,115 are ROHS3 compliant. PTVS60VP1UP,115 carries AEC-Q101 automotive qualification instead. The original 1SMB60AT3 is RoHS non-compliant. Verify compliance requirements for your application before selection.

Q: Can I use SMBJ60A-TP in place of 1SMB60AT3 in high-temperature environments?

A: Yes. SMBJ60A-TP extends the upper operating temperature to 175°C (versus 150°C for the original part), providing additional thermal margin. All other electrical parameters remain identical. This part is suitable for applications requiring extended temperature performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message