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ECS-40-20-4X ECS-40-20-4X is a 4 MHz fundamental mode quartz crystal in a low profile HC-49USX through hole package. It features ±30ppm frequency tolerance, ±50ppm stability, and 20pF load capacitance.
Mfr Part #:

ECS-40-20-4X

Available from 1 distributors
Mfr Name: ECS Inc.
ECS Inc.
ECS-40-20-4X is a 4 MHz fundamental mode quartz crystal in a low profile HC-49USX through hole package. It features ±30ppm frequency tolerance, ±50ppm stability, and 20pF load capacitance.
✓ Total Stock: 98 pcs

ECS-40-20-4X Available from 1 distributor

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✓ Non-Authorised
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Speed Components Ltd ✓
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98 pcs
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98 pcs On Request 1 On Request On Request On Request On Request On Request
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ECS-40-20-4X Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
ESR (Equivalent Series Resistance)
Frequency
Frequency Stability
Frequency Tolerance
Height
Length
Load Capacitance
Mounting Type
Operating Mode
Operating Temperature
Package / Case
Storage Temperature
Type
Width
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ECS-40-20-4X Description

Short technical summary and product information.

The ECS-40-20-4X is a 4.0000 MHz fundamental mode quartz crystal manufactured by ECS Inc. International. It is designed for general purpose frequency control applications requiring a stable and accurate clock source.

 

Key electrical specifications include a frequency tolerance of ±30 ppm at 25°C and frequency stability of ±50 ppm over the operating temperature range of -10°C to +70°C. The crystal requires a 20 pF load capacitance and has a maximum equivalent series resistance (ESR) of 150 Ω. The drive level is 500 μW typical, and shunt capacitance is 7 pF typical. First year aging is limited to ±5 ppm.

 

The crystal is housed in a low profile HC-49USX (3.5 mm height) resistance weld through hole package with matte tin/copper lead finish. It is RoHS3 compliant, REACH unaffected, and MSL 1 (unlimited). The part is lead free and suitable for wave soldering with a peak solder temperature of 260°C for 10 seconds.

ECS-40-20-4X Quick Information

Product Type: MHz Crystal
Canonical Name: ECS-40-20-4X 4 MHz ±30ppm Crystal 20pF HC-49USX
Subcategory: Through Hole Crystal

ECS-40-20-4X Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): MSL 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb Free

ECS-40-20-4X Features

  • 4 MHz fundamental mode quartz crystal.
  • ±30 ppm frequency tolerance at 25°C.
  • 20 pF load capacitance specification.
  • Low profile HC-49USX through hole package.
  • RoHS3 compliant and lead free.

ECS-40-20-4X Applications

  • Microcontroller clock generation circuits.
  • Consumer electronics timing references.
  • Industrial control system oscillators.
  • Communication interface timing modules.

ECS-40-20-4X FAQs

6 frequently asked questions generated from this part’s specifications.
What is the frequency of the ECS-40-20-4X?

The frequency is 4 MHz.

What is the frequency tolerance?

±30 ppm at 25°C.

What load capacitance is required?

20 pF.

What is the operating temperature range?

-10°C to +70°C.

What package does this crystal use?

HC-49/US (low profile HC-49USX variant) through hole.

Is the ECS-40-20-4X RoHS compliant?

Yes, it is RoHS3 compliant and lead free.

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