SA6.5HE3/54 Equivalent & Substitute Parts

Part Overview

The SA6.5HE3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for transient overvoltage protection in electronic circuits. This component features a 6.5V reverse standoff voltage with a 12.3V maximum clamping voltage and 40.7A peak pulse current capability in a through-hole DO-204AC (DO-15) package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Substiute Parts

SA6.5HE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1064SA6.5HE3/54 Datasheet

Current PartRFQ

SA6.5AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1002SA6.5AHE3/54 Datasheet

DirectRFQ

LCE6.5A

Littelfuse Inc.In Stock: 1150LCE6.5A Datasheet

MFR RecommendedRFQ

SA6.5A

Taiwan Semiconductor CorporationIn Stock: 16482SA6.5A Datasheet

MFR RecommendedRFQ

SA6.5A-AP

Micro Commercial CoIn Stock: 833SA6.5A-AP Datasheet

MFR RecommendedRFQ

SA6.5A-BP

Micro Commercial CoIn Stock: 859SA6.5A-BP Datasheet

MFR RecommendedRFQ

SA6.5A-TP

Micro Commercial CoIn Stock: 947SA6.5A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SA6.5HE3/54 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 6.5V
• Voltage - Breakdown (Min): 7.22V
• Unidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, or DO-201AA (axial packages)

Performance Considerations:

• Voltage - Clamping (Max) @ Ipp: Must not exceed 12.3V for direct drop-in replacement
• Current - Peak Pulse (10/1000µs): Minimum 40.7A
• Power - Peak Pulse: Minimum 500W
• Operating Temperature Range: -55°C ~ 175°C

Compliance Requirements:

• RoHS3 Compliant
• MSL: 1 (Unlimited)

Substitute parts meeting these criteria are functionally equivalent and can replace the SA6.5HE3/54 in circuit applications with identical electrical performance and mechanical fit.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - SA6.5A (Taiwan Semiconductor Corporation): This part is the recommended primary substitute. It maintains identical electrical specifications (6.5V standoff, 7.22V breakdown, 11.2V clamping) with 46A peak pulse current in the same DO-204AC (DO-15) package. Active product status ensures long-term availability. RoHS3 compliance and MSL-1 rating match the original specification. Inventory availability (16,400 pcs) supports production requirements.

Secondary Substitute - SA6.5AHE3/54 (Vishay): This Vishay part provides direct manufacturer continuity with active product status. Electrical parameters are equivalent (6.5V standoff, 11.2V clamping, 44.7A peak pulse). Identical DO-204AC (DO-15) package ensures mechanical compatibility. Tape & Reel packaging supports automated assembly. RoHS3 compliance maintained.

Alternative Substitute - SA6.5A-TP (Micro Commercial Co): This part offers equivalent electrical performance (6.5V standoff, 11.2V clamping, 45.5A peak pulse) in DO-15 package with Tape & Reel packaging. Active status and RoHS3 compliance confirmed. Suitable for applications requiring alternative sourcing.

Higher Power Alternative - LCE6.5A (Littelfuse): This part provides enhanced power dissipation (1500W vs. 500W) with 100A peak pulse current, maintaining identical voltage specifications (6.5V standoff, 11.2V clamping). Package differs (DO-201AA vs. DO-204AC), requiring PCB layout verification. Active product status and RoHS3 compliance confirmed. Suitable for high-transient-current applications.

Bulk Packaging Options - SA6.5A-AP and SA6.5A-BP (Micro Commercial Co): These parts provide identical electrical specifications in bulk packaging format. Electrical parameters match (6.5V standoff, 11.2V clamping, 45.5A peak pulse). Suitable for high-volume applications where bulk packaging is preferred.

Frequently Asked Questions (FAQ)

Q: Can SA6.5A (Taiwan Semiconductor) directly replace SA6.5HE3/54? A: Yes. Both parts share identical reverse standoff voltage (6.5V), breakdown voltage (7.22V), and operate within the same temperature range (-55°C to 175°C). The SA6.5A provides 46A peak pulse current versus 40.7A in the original, exceeding minimum requirements. Both use DO-204AC (DO-15) packages with identical pinouts and mechanical fit.

Q: What is the difference between SA6.5AHE3/54 and SA6.5A? A: Both parts maintain identical electrical specifications (6.5V standoff, 11.2V clamping). The primary difference is manufacturer: SA6.5AHE3/54 is Vishay, while SA6.5A is Taiwan Semiconductor Corporation. Both are active products with RoHS3 compliance and equivalent performance.

Q: Why does LCE6.5A have higher power rating (1500W vs. 500W)? A: The LCE6.5A supports 100A peak pulse current compared to 40.7A in the original part, resulting in higher power dissipation capability. This makes it suitable for applications with higher transient current requirements while maintaining identical voltage protection levels (6.5V standoff, 11.2V clamping).

Q: Are Micro Commercial Co parts (SA6.5A-AP, SA6.5A-BP, SA6.5A-TP) equivalent? A: Yes. All three Micro Commercial Co variants provide identical electrical specifications (6.5V standoff, 11.2V clamping, 45.5A peak pulse). Differences are packaging format only: SA6.5A-AP and SA6.5A-BP use bulk packaging, while SA6.5A-TP uses Tape & Reel. Select based on assembly process requirements.

Q: Can I use LCE6.5A in a DO-204AC footprint? A: No. LCE6.5A uses DO-201AA (DO-27) package, which differs mechanically from DO-204AC (DO-15). PCB layout and component placement must be verified before substitution. Both are axial through-hole packages but have different lead spacing and body dimensions.

Q: What compliance certifications apply to all substitute parts? A: All substitute parts listed are RoHS3 compliant with MSL-1 (Unlimited) moisture sensitivity rating. Automotive-grade parts (SA6.5HE3/54, SA6.5AHE3/54) carry AEC-Q101 qualification. Non-automotive variants maintain equivalent environmental compliance.

Q: Is the SA6.5HE3/54 still available for purchase? A: The SA6.5HE3/54 is classified as obsolete. Current inventory (1,017 pcs) is available as new original stock, but long-term availability is not guaranteed. Active substitute parts (SA6.5A, SA6.5AHE3/54, LCE6.5A) are recommended for new designs and ongoing production.