SMF13A-M3-18 Equivalent & Substitute Parts

Part Overview

The SMF13A-M3-18 is an active Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This unidirectional Zener-type device provides transient overvoltage protection for general-purpose applications with a 13V reverse standoff voltage and 21.5V maximum clamping voltage. The part is available in DO-219AB (SMF) surface mount packaging with 855 pieces in current inventory stock. Finding equivalent substitute parts may be necessary due to supply constraints, lead time requirements, or design flexibility needs while maintaining identical electrical performance specifications.

Substiute Parts

SMF13A-M3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 886SMF13A-M3-18 Datasheet

Current PartRFQ

SMF13A-TP

Micro Commercial CoIn Stock: 13960SMF13A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF13A-M3-18 are qualified based on strict electrical and mechanical parameter matching within the TVS diode category. The following parameters determine substitution eligibility:

Critical Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 13V
• Voltage - Breakdown (Min): 14.4V
• Voltage - Clamping (Max) @ Ipp: 21.5V
• Current - Peak Pulse (10/1000µs): 9.3A
• Power - Peak Pulse: 200W
• Type: Zener
• Unidirectional Channels: 1
• Applications: General Purpose

Mechanical & Compliance Parameters:

• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Product Status: Active

The SMF13A-TP from Micro Commercial Co qualifies as a manufacturer-recommended substitute, maintaining identical electrical specifications while utilizing an alternative surface mount package (SOD-123FL vs. DO-219AB).

Parameter Comparison

Engineering Selection Recommendations

Both the SMF13A-M3-18 and SMF13A-TP are active products with ROHS3 compliance and identical electrical performance specifications. Selection between these parts should be based on:

Package Compatibility: The primary difference is the surface mount package format. The SMF13A-M3-18 uses DO-219AB (SMF) packaging, while the SMF13A-TP uses SOD-123F (SOD-123FL) packaging. PCB layout and footprint design must accommodate the selected package geometry.

Supply Availability: The SMF13A-TP currently has higher inventory availability (13,889 pieces) compared to the SMF13A-M3-18 (855 pieces), which may influence procurement decisions for high-volume applications.

Compliance Status: Both parts maintain identical regulatory compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification, HTSUS 8541.10.0080).

Frequently Asked Questions (FAQ)

Q: Can SMF13A-TP be used as a direct replacement for SMF13A-M3-18?

A: The SMF13A-TP is electrically equivalent with identical voltage and current specifications. However, the package format differs (SOD-123F vs. DO-219AB). Direct PCB substitution requires compatible footprint design. Electrical performance is functionally identical.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching: Reverse Standoff Voltage (13V), Breakdown Voltage (14.4V minimum), Clamping Voltage (21.5V maximum), Peak Pulse Current (9.3A), and Peak Pulse Power (200W). All substitute parts must maintain these specifications within the same tolerance ranges.

Q: Are there package-related considerations when switching between SMF13A-M3-18 and SMF13A-TP?

A: Yes. The SMF13A-M3-18 uses DO-219AB (SMF) packaging while SMF13A-TP uses SOD-123F (SOD-123FL) packaging. These packages have different physical dimensions and PCB footprints. Design verification is required to confirm footprint compatibility with your circuit board layout.

Q: Do both parts meet the same compliance and regulatory requirements?

A: Yes. Both the SMF13A-M3-18 and SMF13A-TP are ROHS3 compliant, REACH unaffected, and classified under the same ECCN (EAR99) and HTSUS codes (8541.10.0080).

Q: What is the operating temperature range for these TVS diodes?

A: Both parts operate across -65°C to 175°C. The SMF13A-M3-18 specifies this as junction temperature (TJ), while the SMF13A-TP specifies ambient temperature (TA). Thermal management design should account for the specified temperature range in your application environment.