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Littelfuse

Littelfuse DST1040S

DST1040S variants from Littelfuse

Variants

2

Mfr

Littelfuse

Lifecycle

Active

DST1040S Overview

What changes between part numbers, and what to check before you lock the BOM — Rectifier Diodes.

Key Features

  • Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.

Target Applications

  • Rectifier Diodes — design-in and field replacement
  • BOM scrub where only the base prefix is known but suffix is TBD
  • Second-source checks when the original MPN is constrained

Ordering Variants

Compare 2 DST1040S part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part NumberDescriptionManufacturerLifecycleRoHSAvailabilityAction
DST1040SRectifier Diode, Schottky, 1 Phase, 1 Element, 45V V(RRM), Silicon, TO-277B,LittelfuseActiveCompliantIn Stock
RFQ
DST1040S-ARectifier Diode,LittelfuseActiveCompliantIn Stock
RFQ

Ordering Code Differences

How suffixes on DST1040S map to package, grade, and reel options.

How to Choose the Right DST1040S Rectifier Diodes

📦

Match the footprint first

Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For DST1040S, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "DST1040S" — include the full suffix (e.g. A). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for DST1040S product family

Identity

Base Model
DST1040S
Manufacturer
Littelfuse
Listed Variants
2

Variant Parameters

Lifecycle Status
Active
RoHS Status
Compliant

Source DST1040S with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from Littelfuse. Our team supports active, EOL, and hard-to-find component sourcing.

  • Original manufacturer parts with traceability options
  • BOM upload and multi-line RFQ support
  • Package, grade, and compliance verification
Request QuoteView LittelfuseBrowse all base models →

Frequently Asked Questions

Common technical questions about the DST1040S product family.

DST1040S is a base / family code from Littelfuse. You order a full MPN such as DST1040S, DST1040S-A. The variant table lists 2 orderable lines with different suffixes.
Listed suffix fragments include: A. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Littelfuse datasheet ordering guide — do not guess from pattern alone.
Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.
Full manufacturer MPN (not just DST1040S), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.