SMBJ5.0-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ5.0-E3/52 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component in DO-214AA (SMB) package is designed for general-purpose transient voltage suppression applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	5V
Voltage - Breakdown (Min)	6.4V
Voltage - Clamping (Max) @ Ipp	9.6V
Current - Peak Pulse (10/1000µs)	62.5A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SMBJ5.0-E3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff: 5V (exact match required)
Voltage - Breakdown: 6.4V minimum (exact match required)
Voltage - Clamping: 9.2V to 9.6V (acceptable range for functional equivalence)
Current - Peak Pulse: 62.5A to 68A (acceptable range for functional equivalence)
Power - Peak Pulse: 600W (exact match required)
Package / Case: DO-214AA or SMB (mechanical compatibility required)
Mounting Type: Surface Mount (required)
RoHS Status: ROHS3 Compliant (required)
MSL: 1 (Unlimited) (required)

Substitute parts must maintain identical standoff and breakdown voltages while allowing minor variations in clamping voltage and peak pulse current within the specified ranges. All substitutes must be surface mount, ROHS3 compliant, and available in compatible packaging.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status
SMBJ5.0-E3/52	Vishay General Semiconductor - Diodes Division	5V	6.4V	9.6V	62.5A	600W	-55°C ~ 150°C	DO-214AA (SMBJ)	Obsolete
SMBJ5.0A-E3/52	Vishay General Semiconductor - Diodes Division	5V	6.4V	9.2V	65.2A	600W	-55°C ~ 150°C	DO-214AA (SMBJ)	Active
SMBJ5.0E3/TR13	Microchip Technology	5V	6.4V	9.6V	62.5A	600W	-65°C ~ 150°C	SMBJ (DO-214AA)	Active
SMBJ5.0A	EVVO Semi	5V	6.4V	9.2V	65.3A	600W	-65°C ~ 150°C	DO-214AA, SMB	Active
SMBJ5.0A-13-F	Diodes Incorporated	5V	6.4V	9.2V	65.2A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active
SMBJ5.0A-HR	Littelfuse Inc.	5V	6.4V	9.2V	65.3A	600W	-65°C ~ 150°C	DO-214AA (SMBJ)	Active
SMBJ5.0A-HRA	Littelfuse Inc.	5V	6.4V	9.2V	65.3A	600W	-65°C ~ 150°C	DO-214AA (SMBJ)	Active
SMBJ5.0A-TP	Micro Commercial Co	5V	6.4V	9.2V	65.2A	600W	-55°C ~ 175°C	DO-214AA, SMB	Active
SMBJ5.0A-TR	STMicroelectronics	5V	6.4V	9.2V	68A	600W	-55°C ~ 150°C	DO-214AA, SMB	Active

Engineering Selection Recommendations

All listed substitute parts are ROHS3 compliant and MSL 1 (Unlimited), meeting the compliance requirements of the original SMBJ5.0-E3/52. Selection among active alternatives should prioritize parts with matching or extended operating temperature ranges and established manufacturer support.

SMBJ5.0E3/TR13 (Microchip Technology) provides the closest electrical match with identical clamping voltage (9.6V) and peak pulse current (62.5A) to the original part, while offering extended lower temperature operation (-65°C minimum).

SMBJ5.0A-E3/52 (Vishay General Semiconductor - Diodes Division) maintains the same manufacturer lineage as the original part with minor clamping voltage reduction (9.2V) and slightly increased peak pulse current (65.2A), both within acceptable functional ranges.

SMBJ5.0A-TR (STMicroelectronics) offers the highest peak pulse current rating (68A) among substitutes, providing additional margin for transient suppression applications.

SMBJ5.0A-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, suitable for applications requiring elevated temperature performance.

Frequently Asked Questions (FAQ)

Q: Can SMBJ5.0A variants be used as direct replacements for SMBJ5.0-E3/52?

A: Yes. SMBJ5.0A variants maintain the same 5V reverse standoff voltage and 6.4V minimum breakdown voltage. The clamping voltage reduction from 9.6V to 9.2V and peak pulse current increase from 62.5A to 65.2-65.3A fall within acceptable functional ranges for general-purpose transient suppression.

Q: What is the difference between packaging designations like DO-214AA, SMB, and SMBJ?

A: DO-214AA and SMB refer to the same physical package outline. SMBJ is the device series designation used by some manufacturers. All are mechanically compatible for surface mount PCB assembly.

Q: Does the extended temperature range of SMBJ5.0A-TP (-55°C ~ 175°C) affect substitution compatibility?

A: Extended temperature range does not prevent substitution. If the original design operates within -55°C ~ 150°C, the SMBJ5.0A-TP remains fully compatible. Extended range provides additional design margin for future applications.

Q: Are there electrical differences between Littelfuse SMBJ5.0A-HR and SMBJ5.0A-HRA variants?

A: Both Littelfuse variants (SMBJ5.0A-HR and SMBJ5.0A-HRA) share identical electrical specifications: 5V standoff, 6.4V breakdown, 9.2V clamping, and 65.3A peak pulse current. The suffix designations reflect internal manufacturing or qualification differences not affecting electrical performance.

Q: Why does SMBJ5.0E3/TR13 (Microchip) match the original clamping voltage while SMBJ5.0A variants do not?

A: SMBJ5.0E3/TR13 maintains the E3 designation matching the original part's electrical grade, resulting in 9.6V clamping. SMBJ5.0A variants use the A grade specification with 9.2V clamping. Both grades meet the 5V standoff and 6.4V breakdown requirements for functional equivalence.

Q: Is inventory availability a factor in substitute selection?

A: Inventory levels are provided for reference. SMBJ5.0A-TR (STMicroelectronics) offers the highest inventory (97,388 pcs), while SMBJ5.0A-HRA (Littelfuse) offers the lowest (806 pcs). Selection should balance availability with electrical and thermal requirements.

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