Vishay SQ9945BEY

SQ9945BEY variants from Vishay

SQ9945BEY Datasheet

Variants

Mfr

Vishay

Lifecycle

Active

SQ9945BEY 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: T1-GE3, T1_BE3. 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 SQ9945BEY 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
SQ9945BEY-T1-GE3	Dual N-Ch MOSFET 60V 5.4A 64mR SO Surface Mount	Vishay	Active	Compliant	In Stock	RFQ
SQ9945BEY-T1_BE3	Trans MOSFET N-CH 60V 5.4A 8-Pin SOIC N T/R Automotive AEC-Q101	Vishay	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on SQ9945BEY map to package, grade, and reel options.

How to Choose the Right SQ9945BEY 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 SQ9945BEY, 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 "SQ9945BEY" — include the full suffix (e.g. T1-GE3, T1_BE3). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for SQ9945BEY product family

Identity

Base Model

SQ9945BEY

Manufacturer

Vishay

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source SQ9945BEY with Octatronics

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

Frequently Asked Questions

Common technical questions about the SQ9945BEY product family.

Is SQ9945BEY a single part I can order, or a family prefix?

SQ9945BEY is a base / family code from Vishay. You order a full MPN such as SQ9945BEY-T1-GE3, SQ9945BEY-T1_BE3. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on SQ9945BEY part numbers mean?

Listed suffix fragments include: T1-GE3, T1_BE3. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Vishay datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of SQ9945BEY 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 SQ9945BEY?

Full manufacturer MPN (not just SQ9945BEY), 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.

Where is the SQ9945BEY datasheet?

Use the datasheet link in the page header. Cross-check electrical curves (SOA, saturation voltage, etc.) against your operating point — the table summarizes order codes, not every graph in the PDF.