FSA641UMX ON Semiconductor Integrated Circuit (Quad Flat No-Lead) In Stock

Name: FSA641UMX
Brand: ON Semiconductor
SKU: FSA641UMX
Availability: InStock

FSA641UMX is a ON Semiconductor Connector for board-to-board interconnects and module stacking. Key specs include 21 pins, -40°C to 85°C, and 4 W. Request quote pricing, in-stock sourcing, and worldwide shipping for production builds.

OBSOLETEIntegrated CircuitVerified Jul 2026

Package / Visual Reference

FSA641UMXQuad Flat No-Lead

Quick Facts

Manufacturer: ON Semiconductor
Package: Quad Flat No-Lead
Pin Count: 21
Lifecycle: OBSOLETE
Datasheet: FSA641UMX Datasheet PDF
Category: Integrated Circuit
Price: From $0.3807(MOQ 391)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of FSA641UMX?

Connector selected for board-to-board interconnects
Documented key rating: 21 pins
Additional electrical or mechanical rating: -40°C to 85°C
HVQCCN package with 21 pins for footprint verification
Operating temperature range from -40°C to 85°C
obsolete lifecycle status for sourcing review

What is FSA641UMX used for?

FSA641UMX is typically used in board-to-board interconnects, module stacking, and high-reliability cable or socket assemblies where the documented 21 pins, -40°C to 85°C, and 4 W ratings fit the electrical and mechanical design envelope. Buyers should confirm the datasheet, package footprint, and lifecycle status before approving it for production, repair, or substitute sourcing.

What are the specifications of FSA641UMX?

Pbfree Code	Yes
Manufacturer Package Code	523BG
Factory Lead Time	4Weeks
YTEOL	0
Analog IC - Other Type	SPDT
JESD-30 Code	S-PQCC-N20
JESD-609 Code	e4
Normal Position	NO/NC
Number of Channels	1
Number of Functions	1
Off-state Isolation-Nom	50dB
On-state Resistance Match-Nom	0.75Ω
On-state Resistance-Max (Ron)	14Ω
Output	COMMON OUTPUT
Package Body Material	PLASTIC/EPOXY
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Cel)	260
Supply Voltage-Max (Vsup)	4.3V
Supply Voltage-Min (Vsup)	2.65V
Supply Voltage-Nom (Vsup)	2.775V
Surface Mount	YES
Switch-off Time-Max	27ns
Switch-on Time-Max	37ns
Switching	BREAK-BEFORE-MAKE
Technology	CMOS
Temperature Grade	INDUSTRIAL
Terminal Finish	NICKEL PALLADIUM GOLD
Terminal Form	NO LEAD
Terminal Pitch	0.4mm
Terminal Position	QUAD
Time@Peak Reflow Temperature-Max (s)	30
Package	Quad Flat No-Lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
HTS Code	8542.39.00.60
Country of Origin	Thailand

Where can I find the FSA641UMX datasheet?

FSA641UMX Datasheet Download

Official datasheet from ON Semiconductor

What are equivalent replacements for FSA641UMX?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

Which board-to-board interconnects designs fit FSA641UMX when 21 pins is required?

FSA641UMX fits designs needing a Connector with 21 pins and HVQCCN packaging. Engineers commonly use it in board-to-board interconnects, module stacking, and high-reliability cable or socket assemblies, while checking derating, layout limits, and the manufacturer datasheet.

How should assembly teams evaluate FSA641UMX before approving the footprint?

Review the HVQCCN package details and confirm 21 pins against the PCB land pattern. This helps buyers verify assembly method, inspection access, and substitute compatibility before purchase.

When is FSA641UMX a practical sourcing choice for replacement or production builds?

Use FSA641UMX when the BOM requirement matches 4 W and the obsolete lifecycle status is acceptable. For urgent builds, request lot traceability, date codes, and confirmed shipment quantities.

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AvailabilityIn Stock

Reference Price (USD)

From $0.3807

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
391+	$0.7700	$301.07
500+	$0.5508	$275.42
1000+	$0.5096	$509.60
5000+	$0.4676	$2338.05
10000+	$0.4530	$4529.90
100000+	$0.3807	$38070.00

pcs

Unit price: $0.7700 · Total: $301.07

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”

Thomas Mueller

Hardware Lead, SensorTech GmbH, Germany

FSA641UMX ON Semiconductor Integrated Circuit (Quad Flat No-Lead) In Stock

What are the key features of FSA641UMX?

What is FSA641UMX used for?

What are the specifications of FSA641UMX?

Compliance & Regulatory

Where can I find the FSA641UMX datasheet?

What are equivalent replacements for FSA641UMX?

Frequently Asked Questions

Which board-to-board interconnects designs fit FSA641UMX when 21 pins is required?

How should assembly teams evaluate FSA641UMX before approving the footprint?

When is FSA641UMX a practical sourcing choice for replacement or production builds?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About ON Semiconductor

More from ON Semiconductor

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