ECS-36-20-4DN Crystal Equivalent & Substitute Parts

Part Overview

The ECS-36-20-4DN is a 3.6864 MHz through-hole crystal oscillator in HC-49/US package, designed for fundamental mode operation across industrial temperature ranges. This part carries a "Not For New Designs" status, making identification of active equivalent components essential for ongoing production support and new design initiatives. The substitute part ECS-36-20-4XDN provides functional equivalence with improved product lifecycle status.

Substiute Parts

ECS-36-20-4DN

ECS Inc.In Stock: 1723ECS-36-20-4DN Datasheet

Current PartRFQ

ECS-36-20-4XDN

ECS Inc.In Stock: 1655ECS-36-20-4XDN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between ECS-36-20-4DN and ECS-36-20-4XDN is valid based on the following criteria:

Electrical Parameters (Identical):

• Frequency: 3.6864 MHz
• Frequency Tolerance: ±30ppm
• Load Capacitance: 20pF
• ESR: 200 Ohms
• Operating Mode: Fundamental
• Frequency Stability: ±100ppm

Mechanical Parameters (Identical):

• Package / Case: HC-49/US
• Mounting Type: Through Hole
• Physical Dimensions: 0.447" L x 0.183" W (11.35mm x 4.65mm)
• Height - Seated (Max): 0.138" (4.60mm)

Environmental Parameters (Identical):

• Operating Temperature Range: -40°C ~ 85°C
• Moisture Sensitivity Level: 1 (Unlimited)

These parameters define the substitution group. Both parts are electrically and mechanically interchangeable within the same circuit design.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using ECS-36-20-4DN: The ECS-36-20-4XDN serves as a direct functional replacement. All electrical and mechanical parameters are identical, ensuring pin-for-pin and footprint compatibility without circuit modification.

For New Designs: The ECS-36-20-4XDN is the recommended selection due to its Active product status and ROHS3 compliance. The ECS-36-20-4DN carries a "Not For New Designs" designation and RoHS non-compliance status, making it unsuitable for new product development.

Compliance Considerations: If RoHS3 compliance is a design requirement, ECS-36-20-4XDN is the only option from this substitution group. The ECS-36-20-4DN does not meet this requirement.

Frequently Asked Questions (FAQ)

Q: Can ECS-36-20-4XDN replace ECS-36-20-4DN in existing circuits? A: Yes. Both parts share identical electrical specifications (3.6864 MHz, ±30ppm tolerance, 20pF load capacitance, 200 Ohms ESR), operating temperature range (-40°C ~ 85°C), and HC-49/US package dimensions. No circuit redesign is required.

Q: What is the primary difference between these two parts? A: The ECS-36-20-4XDN is an Active product with ROHS3 compliance, while the ECS-36-20-4DN is marked "Not For New Designs" and is RoHS non-compliant. Functionally and mechanically, they are equivalent.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.447" L x 0.183" W (11.35mm x 4.65mm) with a maximum seated height of 0.138" (4.60mm). They use the same HC-49/US through-hole package.

Q: Which part should be selected for new product development? A: ECS-36-20-4XDN is the appropriate choice for new designs. It maintains Active product status and meets ROHS3 compliance requirements.

Q: Are there any load capacitance or frequency tolerance differences? A: No. Both parts operate at 3.6864 MHz with ±30ppm frequency tolerance and 20pF load capacitance. They are electrically identical in these critical parameters.