SMBJ6.5-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ6.5-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose transient voltage protection in surface-mount applications. This part operates with a 6.5V reverse standoff voltage and provides 12.3V maximum clamping voltage at peak pulse current. The SMBJ6.5-E3/52 is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	6.5V
Voltage - Breakdown (Min)	7.22V
Voltage - Clamping (Max) @ Ipp	12.3V
Current - Peak Pulse (10/1000µs)	48.8A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Type	Zener
Unidirectional Channels	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ6.5-E3/52 is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff (Typ): 6.5V
Voltage - Breakdown (Min): 7.22V (or 7.2V)
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Type: Zener, Unidirectional
Operating Temperature Range: -55°C ~ 150°C (TJ)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts maintain these core electrical and mechanical specifications. Variations in clamping voltage (11.2V vs. 12.3V) and peak pulse current (53.6A to 56A vs. 48.8A) remain within the functional envelope of the SMBJ6.5 series and do not preclude substitution. All substitute parts are classified as Active products, ensuring ongoing availability and manufacturing support.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Product Status
SMBJ6.5-E3/52	Vishay General Semiconductor - Diodes Division	6.5V	7.22V	12.3V	48.8A	600W	DO-214AA, SMB	Obsolete
SMBJ6.5A-E3/52	Vishay General Semiconductor - Diodes Division	6.5V	7.22V	11.2V	53.6A	600W	DO-214AA, SMB	Active
SMBJ6.5A	Taiwan Semiconductor Corporation	6.5V	7.22V	11.2V	56A	600W	DO-214AA, SMB	Active
SMBJ6.5A-13-F	Diodes Incorporated	6.5V	7.22V	11.2V	53.6A	600W	DO-214AA, SMB	Active
SMBJ6.5A-TR	STMicroelectronics	6.5V	7.2V	11.2V	56A	DO-214AA, SMB	Active
SMBJ6V5A	Taiwan Semiconductor Corporation	6.5V	7.22V	11.2V	53.6A	600W	DO-214AA, SMB	Active

Engineering Selection Recommendations

All identified substitute parts are classified as Active products with ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory alignment and long-term supply chain viability. The SMBJ6.5A-E3/52 from Vishay General Semiconductor - Diodes Division represents the direct manufacturer equivalent, maintaining the same supplier device package and series designation while transitioning from obsolete to active status.

For applications requiring maximum design continuity, SMBJ6.5A-E3/52 is the primary recommendation. For applications with flexible sourcing requirements, SMBJ6.5A from Taiwan Semiconductor Corporation and SMBJ6.5A-TR from STMicroelectronics provide equivalent electrical performance with higher inventory availability. SMBJ6.5A-13-F from Diodes Incorporated and SMBJ6V5A from Taiwan Semiconductor Corporation are functionally equivalent alternatives with confirmed active product status.

All substitute parts maintain identical reverse standoff voltage, breakdown voltage, operating temperature range, and package specifications. Clamping voltage and peak pulse current variations are within the SMBJ6.5 series tolerance envelope and do not impact functional substitution.

Frequently Asked Questions (FAQ)

Q: Can SMBJ6.5A-E3/52 directly replace SMBJ6.5-E3/52 in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V), package (DO-214AA, SMB), and operating temperature range (-55°C ~ 150°C). The primary difference is product status transition from obsolete to active, with improved peak pulse current performance (53.6A vs. 48.8A).

Q: What is the significance of the clamping voltage difference between 12.3V and 11.2V?

A: Both values fall within the SMBJ6.5 series specification envelope. The 11.2V clamping voltage in substitute parts represents improved transient suppression performance while maintaining the same 6.5V reverse standoff voltage. This is a functional enhancement, not a limitation.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in DO-214AA (SMB) surface-mount package. Packaging variants (Cut Tape, Digi-Reel, Tape & Reel) differ by supplier but do not affect electrical or mechanical compatibility.

Q: Which substitute part offers the best inventory availability?

A: SMBJ6.5A from Taiwan Semiconductor Corporation maintains the highest inventory level (17,957 pcs) among all identified substitutes, followed by SMBJ6.5A-TR from STMicroelectronics (10,400 pcs).

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

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited), ensuring regulatory and environmental compliance equivalence with the original SMBJ6.5-E3/52.

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