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ECS-40.3-20-4 Quartz crystal with 4.032 MHz frequency, 20pF load capacitance, ±30ppm tolerance, in HC-49/US through-hole package.
Mfr Part #:

ECS-40.3-20-4

Available from 1 distributors
Mfr Name: ECS Inc.
ECS Inc.
Quartz crystal with 4.032 MHz frequency, 20pF load capacitance, ±30ppm tolerance, in HC-49/US through-hole package.
✓ Total Stock: 200 pcs

ECS-40.3-20-4 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
200 pcs
On Request
200 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request
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ECS-40.3-20-4 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
Lead Style
Length
Load Capacitance
Mounting Type
Operating Mode
Operating Temperature
Package / Case
Storage Temperature
Termination Style
Type
Width
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ECS-40.3-20-4 Description

Short technical summary and product information.

The ECS-40.3-20-4 is a quartz crystal from ECS Inc. designed for frequency control applications. It operates at a fundamental frequency of 4.032 MHz with a load capacitance of 20 pF. The frequency tolerance is ±30 ppm at 25°C, and frequency stability is ±50 ppm over the operating temperature range of -10°C to +70°C. The equivalent series resistance (ESR) is 150 Ω maximum. This crystal is housed in a low-profile HC-49/US through-hole package with radial leads, measuring 11.35 mm x 4.65 mm x 3.50 mm. It is suitable for use in microcontrollers, clock generation, and timing circuits. The part is RoHS3 compliant and has an MSL rating of 1.

ECS-40.3-20-4 Quick Information

Product Type: Quartz Crystal
Canonical Name: ECS-40.3-20-4 Quartz Crystal, 4.032 MHz, 20pF Load Capacitance, HC-49/US, Through Hole
Subcategory: Through Hole Quartz Crystal

ECS-40.3-20-4 Compliance

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

ECS-40.3-20-4 Features

  • Fundamental mode quartz crystal at 4.032 MHz.
  • 20 pF load capacitance for accurate frequency.
  • ±30 ppm frequency tolerance at 25°C.
  • Low-profile HC-49/US through-hole package.
  • RoHS3 compliant and MSL 1 rated.

ECS-40.3-20-4 Applications

  • Used in microcontroller clock circuits.
  • Ideal for timing and frequency reference.
  • Suitable for consumer electronics and industrial controls.

ECS-40.3-20-4 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the frequency of the ECS-40.3-20-4 crystal?

4.032 MHz.

What is the load capacitance?

20 pF.

What is the frequency tolerance?

±30 ppm at 25°C.

What is the operating temperature range?

-10°C to +70°C.

What is the package type?

HC-49/US through-hole.

Is this crystal RoHS compliant?

Yes, RoHS3 compliant.

What is the equivalent series resistance (ESR)?

150 Ω maximum.

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