SMF11A-T13 Equivalent & Substitute Parts

Part Overview

The SMF11A-T13 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This surface-mount component operates with an 11V reverse standoff voltage and provides 18.2V maximum clamping voltage at peak pulse current. The part is actively produced and ROHS3 compliant, making it suitable for modern electronic circuit protection requirements. Substitute parts are identified when electrical characteristics and mechanical compatibility align with the original specification, ensuring functional equivalence in circuit applications.

Substiute Parts

SMF11A-T13

LittelfuseIn Stock: 783SMF11A-T13 Datasheet

Current PartRFQ

SMF11A-TP

Micro Commercial CoIn Stock: 3315SMF11A-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF11A-T13 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 11V
• Voltage - Breakdown (Min): 12.2V
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Current - Peak Pulse (10/1000µs): 11A
• Power - Peak Pulse: 200W
• Package / Case: SOD-123F
• Mounting Type: Surface Mount
• Type: Zener
• Unidirectional Channels: 1

The SMF11A-TP manufactured by Micro Commercial Co meets all specified electrical and mechanical parameters, qualifying it as a direct substitute. Both parts share identical voltage ratings, peak pulse current capacity, power dissipation capability, and package configuration. Substitution is valid when circuit design requirements align with these electrical specifications and the SOD-123F surface-mount package is compatible with the PCB layout.

Parameter Comparison

Engineering Selection Recommendations

Both the SMF11A-T13 and SMF11A-TP are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and use. Selection between these parts should be based on availability, supply chain considerations, and inventory requirements rather than electrical or mechanical differences, as all specified parameters are identical.

The SMF11A-TP offers a wider operating temperature range (-65 to 175°C TA versus -55 to 150°C TJ), which may provide additional margin in applications subject to extreme thermal conditions. Both parts are suitable for general-purpose transient voltage suppression in surface-mount circuit designs requiring SOD-123F package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMF11A-TP replace SMF11A-T13 in existing designs?

A: Yes. Both parts share identical electrical specifications including voltage ratings, peak pulse current, power dissipation, and package configuration. Direct substitution is valid for applications designed around the SMF11A-T13 specifications.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (Littelfuse versus Micro Commercial Co) and operating temperature range specification method (TJ versus TA). Electrical performance and package dimensions are identical.

Q: Are there any compatibility concerns with the SOD-123F package?

A: No. Both parts use the SOD-123F surface-mount package, ensuring mechanical and thermal compatibility with PCB layouts designed for this package type.

Q: Do both parts meet current compliance standards?

A: Yes. Both SMF11A-T13 and SMF11A-TP are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What applications are these TVS diodes suitable for?

A: These unidirectional Zener TVS diodes are designed for general-purpose transient voltage suppression in circuits requiring 11V standoff voltage protection with 11A peak pulse current handling capability.