SMF26A-M3-18 Equivalent & Substitute Parts

Part Overview

The SMF26A-M3-18 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates as a Zener-type TVS device in the eSMP® series, designed for general-purpose transient voltage suppression applications. The part is currently in active production status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible packaging configurations.

Substiute Parts

SMF26A-M3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 674SMF26A-M3-18 Datasheet

Current PartRFQ

SMF26A-E3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 48468SMF26A-E3-18 Datasheet

DirectRFQ

SMF26A-HM3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 31230SMF26A-HM3-08 Datasheet

DirectRFQ

SMF26A-TP

Micro Commercial CoIn Stock: 10414SMF26A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMF26A-M3-18 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V
• Voltage - Clamping (Max) @ Ipp: 42.1V
• Current - Peak Pulse (10/1000µs): 4.8A
• Power - Peak Pulse: 200W
• Operating Temperature Range: -65°C to 175°C
• Type: Zener, Unidirectional
• RoHS Status: ROHS3 Compliant

Substitute parts must match all electrical performance parameters listed above. Package variations (DO-219AB versus SOD-123F) are permitted when mechanical constraints allow board-level integration. All identified substitutes maintain identical voltage suppression characteristics and current handling capacity.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with current manufacturing standards.

SMF26A-E3-18 and SMF26A-HM3-08 are direct Vishay alternatives within the eSMP® series. SMF26A-HM3-08 carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications requiring enhanced reliability documentation.

SMF26A-TP, manufactured by Micro Commercial Co, provides electrical equivalence with a package variation (SOD-123F instead of DO-219AB). This substitute is applicable when board layout constraints or design specifications permit the smaller SOD-123F footprint.

Selection between DO-219AB and SOD-123F packages depends on PCB design requirements and available board space. All parts deliver identical electrical performance for transient voltage suppression.

Frequently Asked Questions (FAQ)

Q: Can SMF26A-E3-18 be used as a direct replacement for SMF26A-M3-18?

A: Yes. Both parts are manufactured by Vishay, share identical electrical specifications (26V standoff, 42.1V clamping, 4.8A peak pulse), operate across the same temperature range (-65°C to 175°C), and use the same DO-219AB package. The parts are functionally interchangeable.

Q: What is the difference between SMF26A-HM3-08 and SMF26A-M3-18?

A: Electrical performance is identical. SMF26A-HM3-08 includes AEC-Q101 automotive qualification and is designated for automotive-grade applications. Both use DO-219AB packaging and operate within the same voltage and current specifications.

Q: Can SMF26A-TP replace SMF26A-M3-18 in all applications?

A: SMF26A-TP provides electrical equivalence but uses SOD-123F packaging instead of DO-219AB. Substitution is valid when the smaller SOD-123F footprint is compatible with board layout. Verify PCB pad dimensions and trace routing before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SMF26A-E3-18, SMF26A-HM3-08, and SMF26A-TP are all ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the significance of AEC-Q101 qualification on SMF26A-HM3-08?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. This certification is required for automotive applications but is not necessary for general-purpose industrial or consumer electronics use.