ECS-200-S-4 20 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-200-S-4 is a 20 MHz through-hole crystal oscillator in HC-49/US package designed for fundamental mode operation. This part carries a "Not For New Designs" status, indicating it is obsolete or being phased out. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

ECS-200-S-4

ECS Inc.In Stock: 1258ECS-200-S-4 Datasheet

Current PartRFQ

ECS-200-S-4X

ECS Inc.In Stock: 2232ECS-200-S-4X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-200-S-4 is determined by strict equivalence across the following critical parameters:

• Frequency: 20 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• ESR: 30 Ohms (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)

The ECS-200-S-4X meets all substitution criteria as a parametric equivalent. Both parts share identical electrical and mechanical specifications within the allowed tolerance bands.

Parameter Comparison

Engineering Selection Recommendations

The ECS-200-S-4X is a direct parametric substitute for the ECS-200-S-4. All electrical and mechanical specifications are identical. The primary distinction is product lifecycle status: the ECS-200-S-4X carries "Active" status, ensuring ongoing availability and support, whereas the ECS-200-S-4 is marked "Not For New Designs."

The ECS-200-S-4X also provides improved compliance posture with ROHS3 certification compared to the non-compliant status of the original part. This substitution is suitable for applications requiring equivalent performance with enhanced regulatory compliance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the ECS-200-S-4X be used as a direct replacement for the ECS-200-S-4?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including frequency, tolerance, ESR, package type, and operating temperature range.

Q: What is the difference between the two parts?

A: The ECS-200-S-4X is an active production part with ROHS3 compliance, while the ECS-200-S-4 is obsolete with non-compliant RoHS status. Electrical and mechanical performance are equivalent.

Q: Are there any package or pinout differences?

A: No. Both parts use the HC-49/US through-hole package with identical dimensions and mounting characteristics.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. The frequency, tolerance, ESR, and operating characteristics remain identical.

Q: Is the ECS-200-S-4X available in the same quantities as the original part?

A: Availability varies by distributor and time. The ECS-200-S-4X, being an active product, typically has better long-term availability than the obsolete ECS-200-S-4.