ECS-200-16-7S-TR 20 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-200-16-7S-TR is a 20 MHz surface mount crystal oscillator in 4-SOJ package with 16pF load capacitance and 30 Ohms ESR. This part carries a "Not For New Designs" status, making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility. Substitute parts within this series maintain core frequency and electrical characteristics while offering variations in load capacitance and ESR specifications.

Substiute Parts

ECS-200-16-7S-TR

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

Current PartRFQ

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-200-20-7S-TR

ECS Inc.In Stock: 1247ECS-200-20-7S-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-200-16-7S-TR is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 20 MHz
• Frequency Tolerance: ±30ppm
• Operating Mode: Fundamental
• Package / Case: 4-SOJ, 9.40mm pitch
• Operating Temperature Range: -10°C ~ 70°C
• Mounting Type: Surface Mount
• MSL Rating: 1 (Unlimited)

Variable Parameters (Substitution Allowed):

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

All four substitute parts maintain identical frequency, tolerance, package, and operating specifications. Variations in load capacitance and ESR reflect different internal designs within the same frequency family. RoHS compliance differs between ECX-3S series (non-compliant) and ECX-3SX series (ROHS3 compliant).

Parameter Comparison

Engineering Selection Recommendations

For RoHS Non-Compliant Applications: ECS-200-16-7S-TR and ECS-200-20-7S-TR maintain the ECX-3S series designation with RoHS non-compliant status. These parts are suitable for legacy systems or applications where RoHS compliance is not required. Both offer 30 Ohms ESR with identical frequency and tolerance specifications.

For RoHS3 Compliant Applications: ECS-200-16-7SX-TR, ECS-200-18-7SX-TR, and ECS-200-20-7SX-TR are ROHS3 compliant alternatives within the ECX-3SX series. These parts feature 50 Ohms ESR and are appropriate for designs requiring environmental compliance certification.

Load Capacitance Selection: Load capacitance values of 16pF, 18pF, and 20pF are available across the substitute family. Selection depends on circuit design requirements and oscillator load specifications. All values maintain the ±30ppm frequency tolerance and 20 MHz center frequency.

Frequently Asked Questions (FAQ)

Q: Can ECS-200-16-7SX-TR replace ECS-200-16-7S-TR directly? A: Yes. Both parts share identical frequency (20 MHz), load capacitance (16pF), package (4-SOJ, 9.40mm pitch), and operating temperature range (-10°C ~ 70°C). The primary difference is ESR (30 Ohms vs. 50 Ohms) and RoHS compliance status. Circuit design must accommodate the 50 Ohms ESR specification.

Q: What is the impact of different load capacitance values? A: Load capacitance affects the oscillator's frequency tuning characteristics and circuit design. The 16pF, 18pF, and 20pF variants are electrically distinct and must be selected based on the application circuit's load capacitance specification. Substitution between different load capacitance values requires circuit validation.

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

Q: What is the difference between ECX-3S and ECX-3SX series? A: The ECX-3S series (ECS-200-16-7S-TR, ECS-200-20-7S-TR) is RoHS non-compliant with 30 Ohms ESR. The ECX-3SX series (ECS-200-16-7SX-TR, ECS-200-18-7SX-TR, ECS-200-20-7SX-TR) is ROHS3 compliant with 50 Ohms ESR. Series selection depends on regulatory requirements and circuit ESR tolerance.

Q: Can I substitute a 20pF load capacitance part for a 16pF application? A: Load capacitance is a critical design parameter. Substitution between different load capacitance values (16pF, 18pF, 20pF) requires circuit analysis and validation. The oscillator frequency and stability depend on matching the specified load capacitance.