SMBJ48A-13-F Equivalent & Substitute Parts

Part Overview

The SMBJ48A-13-F is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage protection applications with a 48V reverse standoff voltage and 77.4V maximum clamping voltage. The part is active in production status and ROHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and manufacturing alternatives while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	48	V
Voltage - Breakdown (Min)	53.3	V
Voltage - Clamping (Max) @ Ipp	77.4	V
Current - Peak Pulse (10/1000µs)	7.7	A
Power - Peak Pulse	600	W
Type	Zener	-
Unidirectional Channels	1	-
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ48A-13-F are qualified based on the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 48V
Voltage - Breakdown (Min): 53.3V
Voltage - Clamping (Max) @ Ipp: 77.4V
Current - Peak Pulse (10/1000µs): 7.7A nominal (tolerance range 7.7A to 8.1A acceptable)
Power - Peak Pulse: 600W
Type: Zener, Unidirectional
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

All substitute parts maintain identical voltage specifications and power ratings. Peak pulse current specifications vary within a narrow range (7.7A to 8.1A), which is within acceptable tolerance for this component category. Operating temperature ranges differ slightly between manufacturers but all operate within -55°C minimum and 150°C to 175°C maximum, suitable for general-purpose applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	RoHS Status
SMBJ48A-13-F	Diodes Incorporated	48V	53.3V	77.4V	7.7A	600W	-55°C ~ 150°C (TJ)	DO-214AA, SMB	ROHS3 Compliant
SMBJ48A-TP	Micro Commercial Co	48V	53.3V	77.4V	7.7A	600W	-55°C ~ 175°C (TJ)	DO-214AA, SMB	ROHS3 Compliant
P6SMBJ48A_R1_00001	Panjit International Inc.	48V	53.3V	77.4V	7.7A	600W	-55°C ~ 150°C (TJ)	DO-214AA, SMB	ROHS3 Compliant
SMBJ48A	Meritek	48V	53.3V	77.4V	7.75A	600W	-55°C ~ 150°C	DO-214AA (SMB)	ROHS3 Compliant
SMBJ48A-TR	STMicroelectronics	48V	53.3V	77.4V	8.1A	600W	-55°C ~ 150°C (TJ)	DO-214AA, SMB	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain full electrical equivalence to the SMBJ48A-13-F across critical voltage and power parameters. Selection among these alternatives is based on:

Product Status & Compliance: All parts are active in production and ROHS3 compliant, meeting current regulatory requirements.

Manufacturer Availability: SMBJ48A-13-F (Diodes Incorporated) and SMBJ48A (Meritek) offer the highest inventory levels (6400 and 77400 units respectively), providing supply security. SMBJ48A-TP (Micro Commercial Co) and SMBJ48A-TR (STMicroelectronics) provide secondary sourcing options with 3795 and 1756 units in stock. P6SMBJ48A_R1_00001 (Panjit International Inc.) offers tertiary sourcing with 1080 units available.

Operating Temperature Range: SMBJ48A-TP extends the upper operating temperature to 175°C, providing enhanced thermal margin for high-temperature applications. All other parts operate to 150°C, which is standard for this component category.

Peak Pulse Current Tolerance: Current specifications range from 7.7A to 8.1A, representing normal manufacturing tolerance within the SMBJ48 series. This variation does not affect functional equivalence for general-purpose transient suppression.

Frequently Asked Questions (FAQ)

Q: Can SMBJ48A-13-F be directly replaced with any of the listed substitute parts?

A: Yes. All listed parts maintain identical voltage specifications (48V reverse standoff, 53.3V breakdown minimum, 77.4V clamping maximum) and 600W power rating. Peak pulse current varies between 7.7A and 8.1A, which is within acceptable tolerance for this component series. All parts use the DO-214AA (SMB) surface mount package and are ROHS3 compliant.

Q: What is the difference between the substitute parts?

A: The primary differences are manufacturer, packaging format (Tape & Reel vs. Cut Tape), inventory availability, and minor variations in peak pulse current (7.7A to 8.1A) and maximum operating temperature (150°C to 175°C). These variations do not affect electrical equivalence for general-purpose transient voltage suppression applications.

Q: Are there any package compatibility concerns?

A: No. All parts use the DO-214AA (SMB) surface mount package. PCB footprints and reflow soldering profiles are identical across all listed alternatives.

Q: Which substitute part should be selected for high-temperature applications?

A: SMBJ48A-TP (Micro Commercial Co) is rated to 175°C maximum junction temperature, compared to 150°C for other alternatives. This provides additional thermal margin for applications operating near upper temperature limits.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All listed parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for all parts.

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