SMA6F5.0A-M3/6B Equivalent & Substitute Parts

Part Overview

The SMA6F5.0A-M3/6B is a unidirectional 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 protection applications. The device features a 5V reverse standoff voltage with a 13.4V maximum clamping voltage and peak pulse current capability of 298A (8/20µs). The part is actively manufactured, ROHS3 compliant, and available in DO-221AC (SlimSMA) packaging. Alternative part numbers may be required due to packaging format availability, inventory constraints, or specific application requirements for different clamping voltage or current ratings.

Substiute Parts

SMA6F5.0A-M3/6B

Vishay General Semiconductor - Diodes DivisionIn Stock: 920SMA6F5.0A-M3/6B Datasheet

Current PartRFQ

SMA6F5.0A-M3/6A

Vishay General Semiconductor - Diodes DivisionIn Stock: 30401SMA6F5.0A-M3/6A Datasheet

DirectRFQ

SMAJ5.0A-TP

Micro Commercial CoIn Stock: 1275SMAJ5.0A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): Must match at 5V
• Voltage - Breakdown (Min): Must match at 6.4V
• Unidirectional configuration: Single channel required
• Type: Zener diode technology
• RoHS Compliance: ROHS3 Compliant
• Mounting Type: Surface Mount

Secondary Considerations:

• Voltage - Clamping (Max) @ Ipp: Acceptable range depends on circuit protection requirements
• Current - Peak Pulse: Higher ratings provide additional margin; lower ratings indicate reduced transient handling capability
• Package / Case: Different packages (DO-221AC vs. DO-214AC) affect PCB layout compatibility
• Packaging Format: Tape & Reel (TR), Cut Tape (CT), or Digi-Reel® formats affect procurement and assembly processes

The SMA6F5.0A-M3/6B has two identified substitutes: SMA6F5.0A-M3/6A (identical electrical specifications, different packaging format) and SMAJ5.0A-TP (same standoff and breakdown voltages, but different clamping voltage and current ratings with different package type).

Parameter Comparison

Engineering Selection Recommendations

SMA6F5.0A-M3/6A Selection: This substitute maintains identical electrical specifications to the main part (SMA6F5.0A-M3/6B), including voltage ratings, clamping voltage, and peak pulse current. The only difference is the packaging format: Cut Tape (CT) & Digi-Reel® versus Tape & Reel (TR). Both parts are manufactured by Vishay General Semiconductor, carry Active product status, and meet ROHS3 compliance. This substitute is appropriate when procurement requires alternative packaging formats or when inventory availability of the TR format is constrained. PCB layout compatibility remains identical due to matching DO-221AC package specifications.

SMAJ5.0A-TP Selection: This substitute shares the same reverse standoff voltage (5V) and breakdown voltage (6.4V) as the main part, ensuring compatibility with the circuit's voltage protection threshold. However, the clamping voltage is reduced to 9.2V (versus 13.4V), and the peak pulse current is significantly lower at 43.5A (versus 298A), resulting in a 400W peak pulse power rating instead of 4000W. The package type differs from DO-221AC (SlimSMA) to DO-214AC (SMA), requiring PCB layout modification. This substitute is suitable only for applications with lower transient energy requirements or where the reduced clamping voltage and current ratings are acceptable for the specific circuit protection scheme. The manufacturer differs (Micro Commercial Co versus Vishay), though both maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can SMA6F5.0A-M3/6A be used as a direct replacement for SMA6F5.0A-M3/6B?

A: Yes. Both parts are electrically identical with matching voltage ratings (5V standoff, 6.4V breakdown, 13.4V clamping) and current specifications (298A peak pulse). The difference is packaging format: SMA6F5.0A-M3/6A uses Cut Tape (CT) & Digi-Reel® while SMA6F5.0A-M3/6B uses Tape & Reel (TR). PCB layout and assembly compatibility remain unchanged since both use DO-221AC (SlimSMA) packaging.

Q: Is SMAJ5.0A-TP a suitable replacement for SMA6F5.0A-M3/6B?

A: SMAJ5.0A-TP shares the same voltage protection threshold (5V standoff, 6.4V breakdown) but differs significantly in transient handling capability. The clamping voltage is lower (9.2V versus 13.4V) and peak pulse current is substantially reduced (43.5A versus 298A). This substitute is only appropriate for applications with lower transient energy requirements. Additionally, the package type changes from DO-221AC to DO-214AC, requiring PCB layout modification.

Q: What are the key parameters that determine TVS diode substitution compatibility?

A: The critical parameters are: Voltage - Reverse Standoff (must match), Voltage - Breakdown (must match), Unidirectional configuration, and Zener type. Secondary considerations include Voltage - Clamping and Current - Peak Pulse ratings, which determine transient energy handling capability. Package type and mounting configuration must also be compatible with PCB design constraints.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) affects procurement, storage, and assembly processes but does not alter electrical characteristics. The device package type (DO-221AC versus DO-214AC) does affect PCB layout compatibility and must be verified during design review.

Q: Are all three parts RoHS compliant?

A: Yes. SMA6F5.0A-M3/6B, SMA6F5.0A-M3/6A, and SMAJ5.0A-TP are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, meeting current environmental and regulatory requirements.