SMF13A-E3-18 Equivalent & Substitute Parts

Part Overview

The SMF13A-E3-18 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 protection applications. The device is currently in active production status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance parameters are maintained across alternative packaging formats or manufacturer sources while preserving functional compatibility in circuit applications.

Substiute Parts

SMF13A-E3-18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1151SMF13A-E3-18 Datasheet

Current PartRFQ

SMF13A-TP

Micro Commercial CoIn Stock: 13960SMF13A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMF13A-E3-18 is determined by equivalence in the following critical electrical parameters:

• 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
• Operating Temperature Range: -65°C to 175°C
• Unidirectional Channels: 1
• Type: Zener

The SMF13A-TP qualifies as a manufacturer-recommended substitute because it maintains identical electrical performance specifications across all critical parameters. The primary distinction is the package format: SMF13A-E3-18 uses DO-219AB (SMF) packaging, while SMF13A-TP uses SOD-123F packaging. Both are surface-mount configurations suitable for automated assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Both the SMF13A-E3-18 and SMF13A-TP maintain active product status and full RoHS3 compliance. Selection between these parts is determined by PCB layout constraints and packaging availability:

The SMF13A-E3-18 (DO-219AB/SMF package) is suitable for applications where the larger SMF footprint is accommodated in the design.

The SMF13A-TP (SOD-123F package) is suitable for space-constrained applications requiring a smaller footprint while maintaining identical electrical performance.

Both parts carry MSL Level 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status, indicating equivalent handling and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can SMF13A-TP replace SMF13A-E3-18 in existing designs?

A: Yes, provided the PCB layout accommodates the SOD-123F package footprint. All electrical parameters are identical. Physical package dimensions differ between DO-219AB and SOD-123F, requiring PCB redesign if the original layout was optimized for SMF packaging.

Q: What is the primary difference between these substitute parts?

A: The electrical specifications are identical. The difference is packaging format: SMF13A-E3-18 uses DO-219AB (SMF) surface-mount package, while SMF13A-TP uses SOD-123F surface-mount package. Both are suitable for automated assembly.

Q: Are there any compliance or certification differences?

A: No. Both parts are RoHS3 compliant, REACH Unaffected, and carry MSL Level 1 (Unlimited) rating. Regulatory and environmental compliance is equivalent.

Q: What determines whether a part qualifies as a substitute?

A: Substitution is based on matching electrical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, peak pulse power, operating temperature range, and channel configuration. Package format differences do not disqualify substitution if electrical performance is maintained.

Q: Can I use SMF13A-TP if SMF13A-E3-18 is unavailable?

A: Yes, if your PCB design can accommodate the SOD-123F package footprint. Verify that the smaller package dimensions are compatible with your circuit layout and assembly process before implementation.