SMF6.0AT1G Equivalent & Substitute Parts

Part Overview

The SMF6.0AT1G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 6V reverse standoff voltage, 10.3V maximum clamping voltage, and 200W peak pulse power rating in a surface-mount SOD-123FL package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

SMF6.0AT1G

Littelfuse Inc.In Stock: 65446SMF6.0AT1G Datasheet

Current PartRFQ

SMF6.0A

Diotec SemiconductorIn Stock: 16285SMF6.0A Datasheet

DirectRFQ

SMF5.0A

ANBON SEMICONDUCTOR (INT'L) LIMITEDIn Stock: 62460SMF5.0A Datasheet

MFR RecommendedRFQ

SMF6.0A-TP

Micro Commercial CoIn Stock: 1120SMF6.0A-TP Datasheet

DirectRFQ

SMF6V0A-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1683SMF6V0A-E3-08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMF6.0AT1G is determined by the following critical parameters:

Electrical Parameters (Must Match or Exceed):

• Voltage - Reverse Standoff: 6V nominal
• Voltage - Breakdown (Min): 6.67V or lower
• Voltage - Clamping (Max) @ Ipp: 10.3V or lower
• Current - Peak Pulse (10/1000µs): 19.4A or higher
• Power - Peak Pulse: 200W or higher

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: SOD-123F or equivalent footprint
• Unidirectional Channels: 1

Compliance Parameters:

• RoHS3 Compliant
• Type: Zener diode
• Applications: General Purpose

The substitute parts identified below satisfy these criteria and are classified as direct equivalents or functional alternatives based on their electrical performance and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Equivalent (Direct Replacement): SMF6.0A (Diotec Semiconductor) and SMF6.0A-TP (Micro Commercial Co) are direct electrical equivalents to the SMF6.0AT1G. Both maintain identical voltage specifications (6V standoff, 10.3V clamping), current ratings (19.4A peak pulse), and power dissipation (200W). Both are active products with ROHS3 compliance and SOD-123F packaging, providing seamless PCB-level substitution without design modification.

Secondary Equivalent (Functional Alternative): SMF6V0A-E3-08 (Vishay General Semiconductor) offers identical electrical performance with the same voltage and current specifications. This part uses a DO-219AB package (SMF footprint equivalent) and extends the operating temperature range to -65°C to 175°C, providing enhanced thermal performance. Selection of this part requires PCB layout verification for package compatibility, as DO-219AB differs from SOD-123F in physical dimensions.

Lower Voltage Alternative (Application-Dependent): SMF5.0A (ANBON SEMICONDUCTOR) features a 5V reverse standoff voltage with 9.2V clamping voltage and 21.7A peak pulse current. This part is suitable only for applications where the lower voltage threshold is acceptable and does not compromise circuit protection requirements. The reduced clamping voltage (9.2V vs. 10.3V) provides tighter voltage regulation but narrows the operational margin.

Compliance & Availability: All identified substitutes maintain ROHS3 compliance and are classified as active products with current manufacturing status, ensuring long-term supply chain stability and regulatory compliance for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: Can SMF6.0A (Diotec) be used as a direct replacement for SMF6.0AT1G? A: Yes. SMF6.0A is a direct electrical and mechanical equivalent. Both parts share identical voltage specifications (6V standoff, 10.3V clamping), current ratings (19.4A), power dissipation (200W), and SOD-123F packaging. No circuit design changes are required.

Q: What is the difference between SMF6.0A-TP and SMF6.0A? A: Both parts are electrically identical with matching voltage and current specifications. The primary difference is packaging format: SMF6.0A-TP is supplied in Tape & Reel format, while SMF6.0A availability may vary by supplier. Both are suitable for the same applications.

Q: Is SMF5.0A a suitable substitute? A: SMF5.0A is a functional alternative only if the application tolerates a lower reverse standoff voltage (5V vs. 6V) and lower clamping voltage (9.2V vs. 10.3V). The reduced voltage threshold may affect circuit protection margins. Verify application requirements before selection.

Q: Can SMF6V0A-E3-08 (Vishay) replace the original part? A: SMF6V0A-E3-08 is electrically equivalent with identical voltage and current specifications. However, it uses a DO-219AB package instead of SOD-123F. Physical footprint verification is required to confirm PCB compatibility. The extended operating temperature range (-65°C to 175°C) provides additional thermal margin compared to the original part.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All identified substitute parts (SMF6.0A, SMF5.0A, SMF6.0A-TP, and SMF6V0A-E3-08) are ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: What packaging formats are available for these substitutes? A: SMF6.0A and SMF6.0A-TP are available in Tape & Reel (TR) format. SMF5.0A is available in Cut Tape (CT) and Digi-Reel® formats. SMF6V0A-E3-08 is supplied in Tape & Reel format. Confirm packaging availability with your supplier based on production requirements.

Q: Which substitute offers the best thermal performance? A: SMF6.0A-TP and SMF6V0A-E3-08 both extend the operating temperature range to -65°C to 175°C, compared to the original part's -55°C to 150°C range. This provides enhanced thermal margin for high-temperature applications.