SF1143B-1

$2.15

Description：FILTER, SAW, 315 MHZ, 10SMD
Series：-
Mfr：RFMi
Package：Tape & Reel (TR),Tape & Reel (TR),Bag

SKU:c57953c64b1b Category: SAW Filters Brand: RFMi

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Product introduction

Product Detailed Parameters

Description：FILTER, SAW, 315 MHZ, 10SMD
Series：-
Mfr：RFMi
Package：Tape & Reel (TR),Tape & Reel (TR),Bag
Frequency - Center：315MHz
Bandwidth：4.53MHz
Insertion Loss：15.1dB
Ratings：-
Applications：IF, SDARS
Mounting Type：Surface Mount
Package / Case：10-SMD, No Lead
Height (Max)：0.079" (2.00mm)
Size / Dimension：0.276" L x 0.197" W (7.00mm x 5.00mm)

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SF1143B-1

Overview

The RFMi SF1143B-1 is a Surface Acoustic Wave (SAW) filter designed for signal conditioning applications. It operates at a center frequency of 315 MHz with a bandwidth of 830 kHz, covering the range from 315.03 MHz to 315.86 MHz. The component features a nominal impedance of 250 Ohms and a voltage rating of 30 V. It exhibits an insertion loss of 17 dB and is housed in an SMP-03 SMD/SMT package. The device is qualified under AEC-Q200 standards and functions within a temperature range of -40°C to +85°C.

Feature Summary

Surface Acoustic Wave technology for precise signal filtering
AEC-Q200 automotive qualification for reliability
Compact surface-mount packaging for board integration

Applications

SDARS RF signal processing
Automotive receiver front-ends
Signal conditioning circuits

Procurement Notes

Verify the specific suffix variant against official documentation, as datasheets may list differing bandwidth or insertion loss values for similar part numbers. Confirm AEC-Q200 compliance status directly with the manufacturer or authorized distributor before procurement. Ensure the SMP-03 package dimensions match the target PCB footprint requirements.

Selection Notes

Select this component when a 315 MHz SAW filter with 250 Ohm impedance is required for automotive or industrial signal conditioning. The AEC-Q200 qualification makes it suitable for environments requiring high reliability. Compare insertion loss specifications across variants to ensure compatibility with system sensitivity requirements.

Part Context

This component belongs to the SF series of SAW filters manufactured by RFMi. These devices are engineered for high-selectivity applications in the 315 MHz band. The series supports various packaging options to accommodate different assembly processes while maintaining consistent electrical performance for signal integrity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout and electrical parameters with alternative suppliers if substitution is necessary.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.