SMF36A-M3-08 Equivalent & Substitute Parts

Part Overview

The SMF36A-M3-08 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection applications. This surface-mount component operates in the 36V reverse standoff voltage class with a 58.1V maximum clamping voltage and 3.4A peak pulse current capability. The part is Active status and RoHS3 compliant. Substitute parts are identified when packaging formats, supplier availability, or application-specific certifications require alternative sourcing while maintaining electrical performance within specified parameters.

Substiute Parts

SMF36A-M3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 24444SMF36A-M3-08 Datasheet

Current PartRFQ

SMF36A-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 7271SMF36A-E3-08 Datasheet

DirectRFQ

SMF36A-HE3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 20497SMF36A-HE3-18 Datasheet

DirectRFQ

PTVS64VS1UTR,115

Nexperia USA Inc.In Stock: 12649PTVS64VS1UTR,115 Datasheet

MFR RecommendedRFQ

SMF36A-TP

Micro Commercial CoIn Stock: 1127SMF36A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF36A-M3-08 are categorized based on the following substitution criteria:

Packaging Format Variants (Direct Electrical Equivalents): SMF36A-E3-08 and SMF36A-HE3-18 maintain identical electrical specifications (36V standoff, 58.1V clamping, 3.4A peak pulse) and the same DO-219AB package footprint. These differ only in tape format (Cut Tape & Digi-Reel versus Tape & Reel) and inventory availability. SMF36A-HE3-18 includes AEC-Q101 automotive qualification.

Package Footprint Variant (Electrical Equivalent, Different Package): SMF36A-TP from Micro Commercial Co maintains identical electrical parameters but uses SOD-123FL package instead of DO-219AB. This substitution requires PCB layout modification.

Higher Voltage Class (Limited Substitution): PTVS64VS1UTR,115 from Nexperia operates in the 64V reverse standoff voltage class with 103V clamping voltage and 3.9A peak pulse current. This part is not a direct substitute due to higher voltage ratings but may be considered for applications requiring higher transient suppression margins. It uses SOD-123W package and includes AEC-Q101 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Same Electrical Performance, Same Package): SMF36A-E3-08 and SMF36A-HE3-18 are electrically and mechanically interchangeable with SMF36A-M3-08. Selection between these three parts depends on packaging format availability and supply chain requirements. SMF36A-HE3-18 is recommended for automotive applications requiring AEC-Q101 qualification.

Package Footprint Variant: SMF36A-TP provides identical electrical performance but requires PCB layout redesign due to SOD-123FL package geometry differing from DO-219AB. This substitution is applicable only when PCB modification is feasible.

Higher Voltage Class Alternative: PTVS64VS1UTR,115 operates at higher voltage ratings (64V standoff, 103V clamping) and is not electrically equivalent to SMF36A-M3-08. This part is suitable only for applications where higher transient suppression voltage margins are required. It includes AEC-Q101 automotive qualification and wider operating temperature range (-55°C to 185°C).

All substitute parts maintain RoHS3 compliance and MSL 1 rating consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can SMF36A-E3-08 replace SMF36A-M3-08 directly on the PCB? A: Yes. Both parts share identical electrical specifications and DO-219AB package footprint. The difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect PCB assembly compatibility.

Q: What is the difference between SMF36A-HE3-18 and SMF36A-M3-08? A: Electrical and package specifications are identical. SMF36A-HE3-18 includes AEC-Q101 automotive qualification, making it suitable for automotive applications. Both use DO-219AB package and Tape & Reel format.

Q: Can SMF36A-TP be used as a direct replacement? A: SMF36A-TP maintains identical electrical parameters but uses SOD-123FL package instead of DO-219AB. Direct PCB substitution is not possible without layout modification. The smaller SOD-123F footprint requires redesign of the component placement area.

Q: Is PTVS64VS1UTR,115 a suitable substitute for SMF36A-M3-08? A: PTVS64VS1UTR,115 is not an electrical equivalent. It operates at 64V reverse standoff voltage with 103V clamping voltage, compared to 36V and 58.1V respectively for SMF36A-M3-08. This part is applicable only for applications requiring higher voltage suppression capability. Package footprint also differs (SOD-123W versus DO-219AB).

Q: What packaging formats are available for the 36V SMF TVS diode? A: SMF36A-M3-08 and SMF36A-HE3-18 are supplied in Tape & Reel format. SMF36A-E3-08 is available in Cut Tape & Digi-Reel format. All three use DO-219AB package footprint.

Q: Are all substitute parts RoHS3 compliant? A: Yes. SMF36A-M3-08, SMF36A-E3-08, SMF36A-HE3-18, SMF36A-TP, and PTVS64VS1UTR,115 are all RoHS3 compliant with MSL 1 rating.

Q: Which substitute part is recommended for automotive applications? A: SMF36A-HE3-18 is recommended for automotive applications as it includes AEC-Q101 qualification. PTVS64VS1UTR,115 is also AEC-Q101 qualified but operates at higher voltage ratings and requires different package footprint.