SMBJ6.5E3/TR13 Equivalent & Substitute Parts

Part Overview

The SMBJ6.5E3/TR13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 6.5V reverse standoff voltage with a 12.3V maximum clamping voltage and 48.7A peak pulse current capability. The device is specified for operating temperatures from -65°C to 150°C and is housed in the DO-214AA (SMB) package format. Identifying equivalent substitute parts is necessary when the primary part becomes unavailable or when design specifications allow for alternative components meeting the same electrical and mechanical requirements.

Substiute Parts

SMBJ6.5E3/TR13

Microchip TechnologyIn Stock: 1157SMBJ6.5E3/TR13 Datasheet

Current PartRFQ

SMBJ6.5A

Taiwan Semiconductor CorporationIn Stock: 18060SMBJ6.5A Datasheet

SimilarRFQ

SMBJ6.5A-13-F

Diodes IncorporatedIn Stock: 2070SMBJ6.5A-13-F Datasheet

SimilarRFQ

SMBJ6.5A-TR

STMicroelectronicsIn Stock: 10447SMBJ6.5A-TR Datasheet

SimilarRFQ

SMBJ6V5A

Taiwan Semiconductor CorporationIn Stock: 6130SMBJ6V5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ6.5E3/TR13 are qualified based on the following criteria:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff: 6.5V (ensures same protection threshold)
• Voltage - Breakdown (Min): 7.2V to 7.22V (maintains activation voltage range)
• Package / Case: DO-214AA, SMB (ensures mechanical and thermal compatibility)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Type: Zener (functional device type)

Acceptable Parameter Variations:

• Voltage - Clamping (Max) @ Ipp: 11.2V to 12.3V (all substitutes operate within acceptable clamping range)
• Current - Peak Pulse (10/1000µs): 48.7A to 56A (all substitutes meet or exceed pulse current rating)
• Operating Temperature Range: Minimum of -55°C to 150°C (substitutes with -55°C lower limit acceptable for most applications)

All substitute parts maintain the same RoHS3 compliance, MSL Level 1, and power dissipation rating (600W peak pulse), confirming equivalency for general-purpose overvoltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are qualified alternatives to the SMBJ6.5E3/TR13 for general-purpose TVS diode applications based on the following engineering criteria:

Compliance & Product Status: All substitute parts maintain active product status with RoHS3 compliance, ensuring regulatory alignment and supply chain continuity equivalent to the primary part.

Electrical Compatibility: All substitutes share the critical 6.5V reverse standoff voltage and maintain clamping voltages within a 1.1V variation (11.2V to 12.3V), which is acceptable for transient voltage suppression circuits designed around this device family. Peak pulse current ratings of 53.6A to 56A meet or exceed the primary part's 48.7A specification.

Thermal & Mechanical Compatibility: All substitutes operate across the -55°C to 150°C range, covering the primary part's lower operating limit (-65°C) for applications that do not require extended cold-temperature operation. The DO-214AA (SMB) package remains constant across all parts, ensuring PCB footprint and thermal interface compatibility.

Supply Availability: Substitute parts demonstrate active inventory levels ranging from 2,000 to 17,957 pieces, providing multiple sourcing options for component procurement.

Frequently Asked Questions (FAQ)

Q: Can SMBJ6.5A replace the SMBJ6.5E3/TR13 in all applications? A: Yes, the SMBJ6.5A is a qualified substitute when the operating temperature requirement does not extend below -55°C. The clamping voltage difference (11.2V vs. 12.3V) remains within acceptable circuit margins for general-purpose overvoltage protection. Both parts share identical reverse standoff voltage and package form factor.

Q: What is the significance of the clamping voltage variation between 11.2V and 12.3V? A: The clamping voltage determines the maximum voltage applied to protected circuitry during transient suppression. All qualified substitutes clamp at 11.2V, which is 1.1V lower than the primary part's 12.3V rating. This variation is acceptable when circuit protection thresholds are designed with adequate margin above the clamping voltage specification.

Q: Are all substitute parts available in the same packaging format? A: All substitute parts use the DO-214AA (SMB) package format, ensuring identical PCB footprint, soldering requirements, and thermal dissipation characteristics. Some substitutes may be supplied in different tape/reel configurations (Cut Tape & Digi-Reel® vs. Tape & Reel), but this affects only handling and assembly logistics, not electrical or mechanical performance.

Q: Which substitute part offers the highest peak pulse current rating? A: Both SMBJ6.5A and SMBJ6.5A-TR from Taiwan Semiconductor Corporation and STMicroelectronics, respectively, provide 56A peak pulse current, exceeding the primary part's 48.7A specification and the other substitutes' 53.6A ratings.

Q: Is there a temperature-related reason to prefer the SMBJ6.5E3/TR13 over substitutes? A: The SMBJ6.5E3/TR13 specifies an extended lower operating temperature limit of -65°C compared to -55°C for all substitutes. Use the primary part only if circuit operation below -55°C (TJ) is required. For standard industrial and commercial applications limited to -55°C minimum junction temperature, substitute parts are functionally equivalent.

Q: What is the implication of different manufacturers for circuit reliability? A: All substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity ratings identical to the primary part. Differences in manufacturer affect supply chain resilience rather than electrical performance. Multiple sourcing options improve component availability during supply disruptions.