SMBJ6.5A-13 Equivalent & Substitute Parts

Part Overview

The SMBJ6.5A-13 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 suppression applications with a 6.5V reverse standoff voltage and 11.2V maximum clamping voltage. The original part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	6.5V
Breakdown Voltage (Min)	7.22V
Clamping Voltage (Max) @ Ipp	11.2V
Peak Pulse Current (10/1000µs)	53.6A
Peak Pulse Power	600W
Operating Temperature Range	-55°C to 150°C
Package Type	DO-214AA, SMB
Mounting Type	Surface Mount
Diode Type	Zener
Channels	1 (Unidirectional)

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ6.5A-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Reverse standoff voltage: 6.5V
Breakdown voltage minimum: 7.22V
Clamping voltage maximum: 11.2V
Peak pulse current: 53.6A to 56A (within tolerance)
Peak pulse power: 600W
Operating temperature range: -55°C to 150°C
Package: DO-214AA or SMB designation
Mounting type: Surface Mount
Diode type: Zener
Unidirectional channels: 1

All substitute parts listed maintain these core electrical specifications and package compatibility, ensuring functional equivalence in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Typ)	Vb (Min)	Vc (Max)	Ipp (A)	Pkg	Status	RoHS
SMBJ6.5A-13	Diodes Incorporated	6.5V	7.22V	11.2V	53.6A	SMB	Discontinued	Non-compliant
SMBJ6.5A-13-F	Diodes Incorporated	6.5V	7.22V	11.2V	53.6A	SMB	Active	ROHS3
SMBJ6.5A-E3/52	Vishay General Semiconductor	6.5V	7.22V	11.2V	53.6A	DO-214AA	Active	ROHS3
SMBJ6V5A	Taiwan Semiconductor Corporation	6.5V	7.22V	11.2V	53.6A	SMB	Active	ROHS3
PTVS6V5P1UP,115	NXP USA Inc.	6.5V	7.22V	11.2V	53.6A	SOD-128	Active	N/A
SMBJ6.5A	Taiwan Semiconductor Corporation	6.5V	7.22V	11.2V	56A	SMB	Active	ROHS3
SMBJ6.5A-TR	STMicroelectronics	6.5V	7.2V	11.2V	56A	SMB	Active	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Identical Specifications):

SMBJ6.5A-13-F (Diodes Incorporated): Direct equivalent with active product status and ROHS3 compliance. Identical electrical parameters and SMB packaging. Recommended for direct replacement in new designs and production.
SMBJ6.5A-E3/52 (Vishay General Semiconductor): Functionally equivalent with active status and ROHS3 compliance. Supplied in Cut Tape & Digi-Reel packaging. DO-214AA package designation is equivalent to SMB.
SMBJ6V5A (Taiwan Semiconductor Corporation): Meets all electrical specifications with active status and ROHS3 compliance. High inventory availability (6100 pcs).

Secondary Substitutes (Minor Parameter Variance):

SMBJ6.5A (Taiwan Semiconductor Corporation): Peak pulse current rated at 56A versus 53.6A in the original. Maintains all voltage specifications and operating temperature range. ROHS3 compliant with highest inventory availability (17957 pcs).
SMBJ6.5A-TR (STMicroelectronics): Peak pulse current rated at 56A with breakdown voltage minimum of 7.2V versus 7.22V. All other parameters equivalent. ROHS3 compliant with active status.

Alternative Package Option:

PTVS6V5P1UP,115 (NXP USA Inc.): Meets all electrical specifications but uses SOD-128 package instead of SMB. Automotive grade with AEC-Q101 qualification. Suitable only if PCB layout accommodates SOD-128 footprint.

All substitute parts maintain the -55°C to 150°C operating temperature range and 600W peak pulse power rating. Selection should prioritize parts with active product status and ROHS3 compliance for new designs.

Frequently Asked Questions (FAQ)

Q: Can SMBJ6.5A-13-F be used as a direct replacement for SMBJ6.5A-13? A: Yes. SMBJ6.5A-13-F is electrically and mechanically identical to SMBJ6.5A-13, with the primary difference being active product status and ROHS3 compliance. The "-F" suffix indicates Tape & Reel packaging format. Both use the SMB (DO-214AA) package.

Q: What is the difference between SMB and DO-214AA package designations? A: SMB and DO-214AA refer to the same physical package. SMB is the industry shorthand designation, while DO-214AA is the formal JEDEC package code. Parts specified with either designation are mechanically and electrically compatible.

Q: Why do some substitutes show 56A peak pulse current instead of 53.6A? A: SMBJ6.5A and SMBJ6.5A-TR are rated for 56A peak pulse current, which is within the acceptable tolerance range for this device category. The higher rating does not affect compatibility; these parts will function identically in circuits designed for 53.6A operation.

Q: Is PTVS6V5P1UP,115 compatible with existing PCB layouts designed for SMB packages? A: No. PTVS6V5P1UP,115 uses the SOD-128 package, which has a different footprint than SMB (DO-214AA). PCB layout modifications are required for this substitute. Use only if your design can accommodate SOD-128 footprint changes.

Q: What does ROHS3 compliance mean for this TVS diode? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original SMBJ6.5A-13 is RoHS non-compliant; all active substitutes listed are ROHS3 compliant.

Q: Which substitute has the highest inventory availability? A: SMBJ6.5A from Taiwan Semiconductor Corporation has the highest inventory at 17957 pcs, followed by SMBJ6.5A-TR from STMicroelectronics at 10400 pcs.

Q: Are all substitutes suitable for automotive applications? A: Only PTVS6V5P1UP,115 carries automotive grade designation with AEC-Q101 qualification. Other substitutes are rated for general-purpose applications. Verify automotive requirements with your application specifications.

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