U3741BM-P3FLG3
RF RX ASK/FSK 300-450MHZ 20SOIC
Quick Answer: U3741BM-P3FLG3 from Microchip Technology is a UHF ASK/FSK remote-control receiver IC.
- Manufacturer
- Microchip Technology
- Product Category
- RF Receivers
- Package
- 20-SOIC (0.295", 7.50mm Width)
- Stock
- 1,824 pcs
- Availability
- Current quantity subject to confirmation.
Product Attributes
| Manufacturer | Microchip Technology |
|---|---|
| Product Category | RF Receivers |
| Antenna Connector | PCB, Surface Mount |
| Applications | RKE, Remote Control Systems |
| Current - Receiving | 8.2mA |
| Data Interface | PCB, Surface Mount |
| Data Rate (Max) | 10kBaud |
| Frequency | 300MHz ~ 450MHz |
| Min Qty | 1 |
| Modulation or Protocol | ASK, FSK |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 105°C |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| Product status | Obsolete |
| Sensitivity | -109dBm |
| Supplier Device Package | 20-SOIC |
| Voltage - Supply | 4.5V ~ 5.5V |
| Datasheet | View Datasheet PDF |
Procurement Snapshot
Key supply and purchasing information for U3741BM-P3FLG3.
Why Source from Antrex Electronics?
Independent distribution support for verified sourcing, inspection and international procurement requirements.
Independent Distribution Support
Shortage, obsolete and hard-to-find component sourcing for production and procurement requirements.
Traceability Review
Label, lot, date code and available supply-chain documentation can be reviewed before order confirmation.
Inspection & Testing
Visual inspection, X-ray and third-party testing support can be arranged when required.
Global Procurement Support
Support for OEM, EMS, distributors and international sourcing requirements across individual parts and BOM projects.
Credentials & Verification Support
Quality controls, traceability review and inspection support for electronic component sourcing.
Detailed Description for U3741BM-P3FLG3
Product Overview
U3741BM-P3FLG3 from Microchip Technology is a UHF ASK/FSK remote-control receiver IC. This receiver-oriented summary is written for engineers and sourcing teams that need a clear view of the receiver function, operating band and interface requirements.
The content focuses on architecture, RF band or radio standard, power/interface characteristics and practical design notes for BOM sourcing and replacement projects.
Key Features
- Manufacturer: Microchip Technology
- Part Number: U3741BM-P3FLG3
- Device Type: UHF ASK/FSK remote-control receiver IC
- Receiver Architecture: LNA, VCO/PLL, crystal oscillator, IF amplifier, demodulator and control block for remote-control receivers
- Frequency Planning: Used in 315 MHz, 433 MHz, 868 MHz and 915 MHz class RKE/TPMS receiver platforms depending on device variant
- Modulation: ASK and FSK receiver support across the car-access receiver family
- Control Interface: Host-controller configuration through control pins or serial control depending on variant
- Application Class: Automotive RKE, TPMS and remote start receiver modules
- Supply Class: Designed for low-power remote-control receiver operation with polling/sleep modes in supported variants
- Package / Case: SOIC/SO package family; exact outline follows ordering code
- Design Notes: Keep crystal frequency, LNA matching and polling/sleep timing consistent with the original receiver reference design.
Applications
Automotive remote keyless entry, tire pressure monitoring, remote start and short-range command receiver modules.
Legacy car-access receiver boards where maintaining the original Atmel/Microchip receiver family and package code is important.
Quality & Sourcing
Antrex Electronics can support sourcing for U3741BM-P3FLG3 through available stock checks, BOM consolidation and alternative-lot review. For RF receiver and radio receiver parts, package condition, lot/date code, moisture handling and original labeling should be checked before shipment.
For shortage support or legacy builds, Antrex Electronics can coordinate visual inspection, packaging verification and third-party electrical or authenticity testing when required. This helps buyers manage risk when sourcing discontinued, allocated or hard-to-find receiver ICs and modules.
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