ECS-200-20-7S-TR 20 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-200-20-7S-TR is a 20 MHz fundamental mode crystal oscillator in 4-SOJ surface mount package with 20pF load capacitance and 30 Ohms ESR. This part carries a "Not For New Designs" status, making equivalent and substitute parts necessary for ongoing production and new design implementations. The ECX-3S series components referenced here provide direct functional alternatives with matching frequency and tolerance specifications.

Substiute Parts

ECS-200-20-7S-TR

ECS Inc.In Stock: 1247ECS-200-20-7S-TR Datasheet

Current PartRFQ

ECS-200-16-7S-TR

ECS Inc.In Stock: 3181ECS-200-16-7S-TR Datasheet

SimilarRFQ

ECS-200-16-7SX-TR

ECS Inc.In Stock: 1592ECS-200-16-7SX-TR Datasheet

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ECS-200-18-7SX-TR

ECS Inc.In Stock: 2920ECS-200-18-7SX-TR Datasheet

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ECS-200-20-7SX-TR

ECS Inc.In Stock: 1931ECS-200-20-7SX-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-200-20-7S-TR is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 20 MHz (all substitutes must maintain this specification)
• Frequency Tolerance: ±30ppm (all substitutes maintain this tolerance)
• Operating Mode: Fundamental
• Package / Case: 4-SOJ, 9.40mm pitch
• Operating Temperature Range: -10°C ~ 70°C
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameters Allowing Substitution:

• Load Capacitance: 16pF, 18pF, or 20pF
• ESR (Equivalent Series Resistance): 30 Ohms or 50 Ohms
• Series Designation: ECX-3S or ECX-3SX
• RoHS Compliance Status: RoHS non-compliant or ROHS3 Compliant

The four substitute parts listed below maintain all mandatory parameters while offering variations in load capacitance, ESR, and compliance certifications. These variations allow circuit designers to select components based on specific circuit requirements and regulatory compliance needs.

Parameter Comparison

Engineering Selection Recommendations

For RoHS Non-Compliant Applications: ECS-200-16-7S-TR provides a direct alternative with identical ESR (30 Ohms) and RoHS status to the main part. The 16pF load capacitance differs from the 20pF specification; circuit design must accommodate this variation.

For ROHS3 Compliant Applications: ECS-200-20-7SX-TR maintains the 20pF load capacitance of the main part while providing ROHS3 compliance. The ESR increases to 50 Ohms; circuit impedance matching must account for this change. ECS-200-18-7SX-TR and ECS-200-16-7SX-TR offer ROHS3 compliance with reduced load capacitance values.

Product Status Consideration: All listed parts, including the main part ECS-200-20-7S-TR, carry "Not For New Designs" status. For new design implementations, consultation with ECS Inc. regarding current production alternatives is necessary.

Frequently Asked Questions (FAQ)

Q: Can ECS-200-16-7S-TR replace ECS-200-20-7S-TR directly? A: Both parts maintain identical frequency (20 MHz), frequency tolerance (±30ppm), ESR (30 Ohms), and package specifications. The load capacitance differs: 16pF versus 20pF. Circuit design must verify compatibility with the reduced load capacitance value.

Q: What is the difference between ECX-3S and ECX-3SX series? A: The ECX-3S series parts (ECS-200-20-7S-TR and ECS-200-16-7S-TR) are RoHS non-compliant with 30 Ohms ESR. The ECX-3SX series parts (ECS-200-20-7SX-TR, ECS-200-18-7SX-TR, ECS-200-16-7SX-TR) are ROHS3 compliant with 50 Ohms ESR.

Q: Does ESR variation affect circuit performance? A: ESR differences between 30 Ohms and 50 Ohms alter crystal impedance characteristics. Circuit design parameters including load capacitance matching and oscillator gain must be evaluated for each ESR value.

Q: Are all substitute parts in the same 4-SOJ package? A: Yes. All listed parts use the 4-SOJ, 9.40mm pitch package with identical physical dimensions (0.492" L x 0.181" W, 12.50mm x 4.60mm) and maximum seated height (0.146", 3.70mm).

Q: What load capacitance options are available? A: Available load capacitance values are 16pF, 18pF, and 20pF. Circuit design must specify the required load capacitance value for proper frequency stability.

Q: Can I use a ROHS3 compliant part in a non-compliant application? A: ROHS3 compliant parts meet or exceed RoHS non-compliant specifications. Substitution is technically feasible; however, ESR and load capacitance variations must be verified for circuit compatibility.