SMBG6.5C-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG6.5C-E3/5B is a Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for general-purpose transient voltage suppression applications with a 6.5V reverse standoff voltage and 12.3V maximum clamping voltage. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

SMBG6.5C-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1074SMBG6.5C-E3/5B Datasheet

Current PartRFQ

SMBG6.5CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 858SMBG6.5CA-E3/5B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMBG6.5C-E3/5B is determined by the following critical parameters:

• Reverse Standoff Voltage (Typ): 6.5V — must remain constant
• Package / Case: DO-215AA, SMB Gull Wing — mechanical and thermal compatibility requirement
• Bidirectional Channels: 1 — functional architecture requirement
• Type: Zener — device technology requirement
• Operating Temperature Range: -55°C ~ 150°C (TJ) — thermal operating envelope
• Voltage - Breakdown (Min): 7.22V — electrical threshold specification
• Voltage - Clamping (Max) @ Ipp: tolerance range for clamping performance
• Current - Peak Pulse (10/1000µs): tolerance range for transient handling capability
• Power - Peak Pulse: 600W — dissipation capability
• RoHS Status: ROHS3 Compliant — regulatory compliance requirement

Substitute parts must maintain identical or tighter specifications for reverse standoff voltage, package type, and operating temperature range. Variations in clamping voltage and peak pulse current are acceptable within the functional design envelope of the application circuit.

Parameter Comparison

Engineering Selection Recommendations

The SMBG6.5CA-E3/5B is the direct substitute for the obsolete SMBG6.5C-E3/5B. Both components share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V minimum), package type (DO-215AA SMB Gull Wing), operating temperature range (-55°C ~ 150°C), and regulatory compliance (ROHS3 Compliant, MSL 1).

The SMBG6.5CA-E3/5B offers improved performance characteristics with a lower maximum clamping voltage (11.2V versus 12.3V) and higher peak pulse current capability (53.6A versus 48.8A), both of which provide enhanced transient suppression performance within the same thermal and electrical envelope.

The critical distinction is product status: SMBG6.5CA-E3/5B is active and currently available, whereas SMBG6.5C-E3/5B is obsolete. For new designs and ongoing procurement, SMBG6.5CA-E3/5B is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can SMBG6.5CA-E3/5B be used as a direct replacement for SMBG6.5C-E3/5B in existing designs?

A: Yes. Both components maintain identical reverse standoff voltage (6.5V), breakdown voltage (7.22V minimum), package type (DO-215AA SMB Gull Wing), and operating temperature range (-55°C ~ 150°C). The substitute offers equal or superior electrical performance.

Q: What is the significance of the lower clamping voltage in SMBG6.5CA-E3/5B?

A: The SMBG6.5CA-E3/5B exhibits a maximum clamping voltage of 11.2V compared to 12.3V in the original part. This represents improved clamping performance, providing tighter voltage regulation during transient events. This is a beneficial characteristic for circuit protection.

Q: Are there packaging differences between these parts?

A: No. Both components use identical packaging: DO-215AA, SMB Gull Wing surface mount configuration. PCB footprints and assembly processes remain unchanged.

Q: What is the impact of the higher peak pulse current in the substitute?

A: The SMBG6.5CA-E3/5B supports 53.6A peak pulse current versus 48.8A in the original part. This increased capability provides additional margin for transient suppression without exceeding the 600W peak pulse power rating shared by both components.

Q: Are regulatory and compliance certifications identical?

A: Yes. Both components are ROHS3 Compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and meet identical regulatory requirements. No compliance changes occur with substitution.

Q: Why is the original part listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The SMBG6.5CA-E3/5B remains in active production and serves the same functional requirements with equivalent or superior electrical characteristics.