ECS-200-S-1 20 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-200-S-1 is a 20 MHz through-hole crystal oscillator in HC-49/U package designed for fundamental mode operation. This part carries a "Not For New Designs" status, making identification of active equivalent alternatives essential for ongoing production and new circuit implementations. The part operates across -10°C to 70°C with ±30ppm frequency tolerance and 20 Ohms equivalent series resistance.

Substiute Parts

ECS-200-S-1

ECS Inc.In Stock: 1194ECS-200-S-1 Datasheet

Current PartRFQ

ECS-200-S-1X

ECS Inc.In Stock: 1588ECS-200-S-1X Datasheet

Parametric EquivalentRFQ

MP200

CTS-Frequency ControlsIn Stock: 2021MP200 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: frequency (20 MHz), frequency tolerance (±30ppm), operating mode (Fundamental), package type (HC-49/U), and mounting method (Through Hole). Parts meeting these core specifications are classified as direct equivalents or parametric equivalents based on additional compliance and performance characteristics.

The ECS-200-S-1 has two identified substitutes:

Parametric Equivalent: ECS-200-S-1X matches all core electrical parameters and maintains identical package specifications. The primary distinction is product status and RoHS compliance level.

Direct Manufacturer Alternative: MP200 from CTS-Frequency Controls meets core frequency and tolerance requirements within the HC-49/U package. Minor variations exist in ESR (25 Ohms vs. 20 Ohms) and physical dimensions, with an extended lower operating temperature limit (-20°C vs. -10°C).

Parameter Comparison

Engineering Selection Recommendations

ECS-200-S-1X is the primary recommended substitute. It maintains identical electrical specifications and package configuration while offering Active product status and ROHS3 compliance. This part is suitable for direct replacement in existing designs and new implementations requiring ECS Inc. sourcing.

MP200 serves as an alternative when CTS-Frequency Controls sourcing is preferred or when extended lower temperature operation (-20°C minimum) is required. The 5 Ohm ESR increase (25 Ohms vs. 20 Ohms) and minor dimensional variations must be evaluated against circuit design requirements. ROHS3 compliance is confirmed for this alternative.

Both substitutes maintain identical frequency tolerance (±30ppm), operating mode (Fundamental), and HC-49/U package specifications, ensuring mechanical and electrical compatibility within the specified parameter envelope.

Frequently Asked Questions (FAQ)

Q: Can ECS-200-S-1X be used as a direct drop-in replacement for ECS-200-S-1?

A: Yes. ECS-200-S-1X matches all core electrical parameters: 20 MHz frequency, ±30ppm tolerance, 20 Ohms ESR, Fundamental mode operation, and HC-49/U package. The primary advantage is Active product status and ROHS3 compliance.

Q: What is the significance of the ESR difference between ECS-200-S-1 and MP200?

A: MP200 has 25 Ohms ESR compared to 20 Ohms for ECS-200-S-1. This 5 Ohm difference affects circuit loading and power consumption characteristics. Circuit design validation is necessary if ESR-sensitive applications are involved.

Q: Are physical dimensions identical across all three parts?

A: ECS-200-S-1 and ECS-200-S-1X share identical dimensions (0.447" L x 0.183" W, 11.35mm x 4.65mm). MP200 has slightly different length and width (0.427" L x 0.150" W, 10.85mm x 3.80mm) but maintains the same maximum seated height (0.530", 13.46mm). All three fit the HC-49/U package standard.

Q: Why is ECS-200-S-1 marked "Not For New Designs"?

A: This designation indicates the part is in end-of-life status. ECS-200-S-1X is the recommended active alternative for new circuit designs and ongoing production.

Q: Do all three parts have the same temperature operating range?

A: ECS-200-S-1 and ECS-200-S-1X operate from -10°C to 70°C. MP200 extends the lower limit to -20°C, providing broader temperature coverage for applications requiring enhanced cold-temperature performance.

Q: Are RoHS and REACH certifications consistent across substitutes?

A: ECS-200-S-1 is RoHS non-compliant. Both ECS-200-S-1X and MP200 are ROHS3 compliant. All three parts maintain REACH Unaffected status.