U641B-MFPY Microchip Integrated Circuit (Small Outline Packages) In Stock
The U641B-MFPY is a Microchip wiper and washer (WiWa) motor controller IC with integrated prewash delay sequencing logic, designed for automotive windshield wiper and washer system control in a small outline package. Available in stock with worldwide shipping for automotive body electronics designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated wiper and washer (WiWa) control with prewash delay sequencing reduces external discrete component count for automotive wiper systems
- Designed for 12 V automotive electrical systems with dedicated motor drive outputs supporting wiper motor load currents
- Small outline package enables compact automotive body control module PCB layouts with minimal board area
- On-chip sequencing logic handles the delay interval between washer pump activation and wiper motor start, simplifying firmware complexity
Applications
The U641B-MFPY targets automotive windshield wiper and washer control applications in passenger vehicles and light commercial trucks. Its built-in prewash delay logic automatically sequences the washer pump activation ahead of wiper motor operation, replicating the standardized WiWa behavior required by OEM body control specifications. The small outline package integrates easily into body control modules alongside other automotive logic ICs operating from a 12 V vehicle battery supply.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What specific automotive function does U641B-MFPY control, and what sequence does it automate?
U641B-MFPY controls the wiper and washer (WiWa) function in automotive windshield systems, automatically sequencing the washer pump activation with a prewash delay before engaging the wiper motor. This 2-step sequence, typically involving a 0.5 to 2 second washer-first delay, is a standard OEM requirement that the IC handles internally, eliminating the need for a microcontroller to manage the timing in software.
How does the prewash delay feature of U641B-MFPY simplify automotive body control module firmware?
By embedding the prewash delay sequencing logic on-chip, U641B-MFPY allows the body control module MCU to issue a single WiWa activation command and let the IC handle the timed washer-then-wiper sequence autonomously. This offloads real-time timing tasks from the host processor, freeing at least 1 software timer resource and reducing firmware complexity for the 12 V automotive control system.
In which automotive systems is U641B-MFPY typically deployed, and what vehicle supply voltage does it target?
U641B-MFPY is designed for 12 V automotive electrical systems found in passenger cars, SUVs, and light trucks requiring integrated windshield wiper and washer control. It is typically embedded in body control modules (BCMs) or dedicated wiper control units, where it drives the wiper motor relay or direct motor output alongside a washer pump, serving OEM assembly lines and aftermarket replacement board designs.
What package does U641B-MFPY use, and how does this affect PCB integration in a compact body control module?
U641B-MFPY is housed in a small outline (SO) surface-mount package with a pin pitch of 1.27 mm, which is standard for automotive SO-family ICs and compatible with automated SMT assembly lines. The small footprint allows the WiWa controller to be placed alongside other body control logic on a densely populated PCB without requiring through-hole clearances, supporting modern compact BCM form factors.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”