ECS-21K-30A

$2.92

Description：MONO XTAL 21.4MHZ 2P 1.5DB TH
Series：MCF
Mfr：ECS Inc.
Package：Bulk

SKU:40cb08c2c793 Category: Monolithic Crystals Brand: ECS Inc.

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Product introduction

Product Detailed Parameters

Description：MONO XTAL 21.4MHZ 2P 1.5DB TH
Series：MCF
Mfr：ECS Inc.
Package：Bulk
Frequency - Center：21.4 MHz
Impedance：1.5 kOhms
Insertion Loss：1.5dB
Bandwidth：30 kHz
Ripple：0.5dB
Number of Poles：2
Operating Temperature：-20°C ~ 70°C
Mounting Type：Through Hole
Package / Case：HC-49/U
Size / Dimension：0.437" L x 0.185" W (11.10mm x 4.70mm)
Height (Max)：0.441" (11.20mm)

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ECS-21K-30A

Overview

The ECS-21K-30A is a monolithic crystal filter manufactured by ECS Inc. It operates at a center frequency of 21.4 MHz with a bandwidth of 30 kHz. The component features a 2-pole design and utilizes a through-hole mounting type. Key electrical parameters include an impedance of 1.5 kOhms, an insertion loss of 1.5 dB, and a passband ripple of 0.5 dB. It is rated for an operating temperature range of -20°C to 70°C.

Feature Summary

Monolithic crystal construction for stable filtering performance
Through-hole mounting configuration for PCB integration
Designed for specific RF signal processing applications

Applications

RF intermediate frequency filtering
Communication equipment signal conditioning
Radio receiver front-end stages

Procurement Notes

Verify the exact part number against official ECS Inc. documentation to ensure compatibility with your circuit design. Confirm that the 21.4 MHz center frequency and 30 kHz bandwidth meet your system requirements. Check the operating temperature range and mounting specifications before procurement to avoid integration issues.

Selection Notes

Select this component when a 21.4 MHz center frequency with a 30 kHz bandwidth is required. Ensure the circuit supports through-hole mounting and can accommodate the specified impedance and insertion loss characteristics. Verify that the operating temperature range aligns with your environmental conditions.

Part Context

This component belongs to the monolithic crystal filter category from ECS Inc., designed for precise frequency selection in electronic circuits. It serves as a passive timing and filtering element, distinct from active oscillators or resonators. The product line focuses on reliable performance for communication and signal processing applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official distributor databases or manufacturer cross-reference guides for potential alternatives if this specific model is unavailable.

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.