STMicroelectronics STF40N

STF40N variants from STMicroelectronics

Variants

Mfr

STMicroelectronics

Lifecycle

Active

STF40N Overview

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

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
2 distinct suffix patternsExamples: 60M2, 65M2. Decode suffix meaning in the ordering notes under the variant table.

Target Applications

MOSFETs — 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 STF40N part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Manufacturer	Lifecycle	RoHS	Availability	Action
STF40N60M2	N-channel 600 V, 0.078 Ohm typ., 34 A MDmesh M2 Power MOSFET in TO-220FP package	STMicroelectronics	Active	Compliant	In Stock	RFQ
STF40N65M2	N-channel 650 V, 0.087 Ohm typ., 32 A MDmesh M2 Power MOSFET in TO-220FP package	STMicroelectronics	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on STF40N map to package, grade, and reel options.

How to Choose the Right STF40N MOSFETs

📦

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 STF40N, 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 "STF40N" — include the full suffix (e.g. 60M2, 65M2). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for STF40N product family

Identity

Base Model

STF40N

Manufacturer

STMicroelectronics

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source STF40N with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from STMicroelectronics. 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 Quote View STMicroelectronics Browse all base models →

Frequently Asked Questions

Common technical questions about the STF40N product family.

Is STF40N a single part I can order, or a family prefix?

STF40N is a base / family code from STMicroelectronics. You order a full MPN such as STF40N60M2, STF40N65M2. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on STF40N part numbers mean?

Listed suffix fragments include: 60M2, 65M2. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the STMicroelectronics datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of STF40N variants?

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.

What should I send for an RFQ on STF40N?

Full manufacturer MPN (not just STF40N), 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.