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Littelfuse Inc. SMF40A

TVS SOD123FL 40V 200W UNIDIR

Answer first: this page is a purchasing reference for the exact part number SMF40A from Littelfuse Inc.. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.

Manufacturer: Littelfuse Inc. Category: TVS Diodes Part number: SMF40A Package: SOD-123F RFQ verification required

Key Parameters

Part NumberSMF40A
ManufacturerLittelfuse Inc.
CategoryTVS Diodes
packageSOD-123F
seriesSMF
packagingTape & Reel (TR)
product statusActive
param 1Zener
param 21
param 3-
param 440V
param 544.4V
param 664.5V
param 73.1A
param 8200W
param 9No
param 10General Purpose
param 11-
param 12-55°C ~ 150°C (TJ)
param 13-
param 14-
param 15Surface Mount
param 16SOD-123F

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify SMF40A Before Ordering

Datasheet and parameter checks

  • Confirm the full manufacturer part number, not only a shortened search keyword.
  • Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
  • Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.

RFQ fields SENICO needs

  • Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
  • State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
  • Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.

For SMF40A, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.

We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.

Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.