SMFE13ALH Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SMFE13ALH is an active Transient Voltage Suppressor (TVS) diode manufactured by Eaton - Electronics Division. This unidirectional zener diode is designed for transient overvoltage protection in surface mount applications, featuring a 13V reverse standoff voltage and 21.5V maximum clamping voltage. The device is qualified to AEC-Q101 automotive standards and is ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible TVS protection characteristics.

Substiute Parts

SMFE13ALH

Eaton - Electronics DivisionIn Stock: 880SMFE13ALH Datasheet

Current PartRFQ

VTVS14ASMF-HM3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 41362VTVS14ASMF-HM3-08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMFE13ALH are identified based on electrical and mechanical compatibility within the TVS diode category. The substitution logic is based on the following critical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within acceptable tolerance of 13V nominal
• Breakdown voltage minimum in the range of 14.4V to 15.4V
• Clamping voltage maximum between 21.5V and 22.2V
• Peak pulse current capability of 17.16A or greater
• Peak pulse power rating of 400W or greater
• Unidirectional channel configuration (single channel)
• Zener diode type classification

Mechanical & Environmental Compatibility Criteria:

• Surface mount packaging technology
• Automotive grade qualification (AEC-Q101)
• Operating temperature range of -55°C minimum and 150°C or higher maximum
• ROHS3 compliance
• MSL rating of 1 (Unlimited)

Package Compatibility: The SMFE13ALH uses SOD-123F package. Substitute parts may use equivalent surface mount packages (such as DO-219AB/SMF) that accommodate the same electrical performance within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

VTVS14ASMF-HM3-08 (Vishay General Semiconductor - Diodes Division)

The VTVS14ASMF-HM3-08 is a qualified substitute for the SMFE13ALH based on the following engineering criteria:

Both devices maintain active product status and carry identical automotive grade qualification (AEC-Q101) and ROHS3 compliance. The VTVS14ASMF-HM3-08 demonstrates electrical parameters within acceptable substitution ranges: reverse standoff voltage of 13.8V (compared to 13V nominal), breakdown voltage minimum of 15.4V (compared to 14.4V), and clamping voltage maximum of 22.2V (compared to 21.5V). Peak pulse current capability of 17.16A meets the minimum threshold for equivalent protection performance, and peak pulse power rating of 400W matches the main part specification.

The VTVS14ASMF-HM3-08 operates across a temperature range of -55°C to 175°C, which exceeds the SMFE13ALH operating range of -55°C to 150°C. Both devices feature MSL rating of 1 (Unlimited) and REACH Unaffected status, ensuring equivalent environmental compliance and handling requirements.

Package differences exist between the two devices: the SMFE13ALH uses SOD-123F while the VTVS14ASMF-HM3-08 uses DO-219AB (SMF). Both are surface mount packages suitable for automated assembly processes. PCB layout and footprint verification is required prior to implementation.

Frequently Asked Questions (FAQ)

Q: What are the primary electrical parameters that determine substitution compatibility for the SMFE13ALH?

A: The critical electrical parameters are reverse standoff voltage (13V nominal), breakdown voltage minimum (14.4V), clamping voltage maximum (21.5V), peak pulse current (18.6A), and peak pulse power (400W). Substitute parts must maintain these specifications within the ranges provided in the parameter comparison table.

Q: Can the VTVS14ASMF-HM3-08 be used as a direct replacement for the SMFE13ALH?

A: The VTVS14ASMF-HM3-08 is electrically compatible as a substitute based on equivalent voltage and current ratings. However, the package differs (DO-219AB versus SOD-123F), requiring PCB footprint and layout verification before implementation. Both devices are automotive grade, AEC-Q101 qualified, and ROHS3 compliant.

Q: Are there any temperature operating range differences between the main part and substitute?

A: The SMFE13ALH operates from -55°C to 150°C (TJ), while the VTVS14ASMF-HM3-08 operates from -55°C to 175°C (TJ). The substitute part has an extended upper temperature limit, which does not restrict its use in applications designed for the main part.

Q: What packaging considerations must be addressed when substituting the VTVS14ASMF-HM3-08 for the SMFE13ALH?

A: The SMFE13ALH uses SOD-123F package while the VTVS14ASMF-HM3-08 uses DO-219AB (SMF) package. Although both are surface mount packages, the physical dimensions and PCB footprints differ. Design verification and PCB layout modification may be required. Consult device datasheets for precise dimensional specifications.

Q: Do both parts meet the same automotive and compliance standards?

A: Yes. Both the SMFE13ALH and VTVS14ASMF-HM3-08 are automotive grade, AEC-Q101 qualified, ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99. Both carry MSL rating of 1 (Unlimited).

Q: What is the difference in peak pulse current between the two devices?

A: The SMFE13ALH has a peak pulse current of 18.6A, while the VTVS14ASMF-HM3-08 has 17.16A. The substitute part provides 92.3% of the main part's peak pulse current capability, which remains within acceptable substitution parameters for equivalent transient protection performance.

Q: Are there any inventory or availability considerations?

A: The SMFE13ALH has 864 pieces in stock, while the VTVS14ASMF-HM3-08 has 41,259 pieces in stock. The substitute part offers significantly higher inventory availability.