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

Part Overview

The ECS-200-20-4DN is a 20 MHz through-hole crystal oscillator in HC-49/US package with 20pF load capacitance and 30 Ohms equivalent series resistance. This part is classified as "Not For New Designs," making identification of equivalent and substitute components essential for ongoing production support and design updates. The availability of active alternatives with identical electrical specifications enables continued system functionality while potentially improving compliance and supply chain reliability.

Substiute Parts

ECS-200-20-4DN

ECS Inc.In Stock: 1652ECS-200-20-4DN Datasheet

Current PartRFQ

ECS-200-20-4

ECS Inc.In Stock: 5061ECS-200-20-4 Datasheet

SimilarRFQ

ECS-200-20-4XDN

ECS Inc.In Stock: 2189ECS-200-20-4XDN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for 20 MHz crystal oscillators is determined by strict alignment of electrical and mechanical parameters. The primary criteria are: frequency (20 MHz), frequency tolerance (±30ppm), load capacitance (20pF), ESR (30 Ohms), package type (HC-49/US), and mounting configuration (through-hole). Parts meeting these specifications are electrically and mechanically interchangeable at the circuit board level.

The ECS-200-20-4DN has two identified substitutes:

ECS-200-20-4: Matches all critical electrical parameters (frequency, tolerance, load capacitance, ESR) and package specifications. Differs in frequency stability (±50ppm vs. ±100ppm) and operating temperature range (-10°C ~ 70°C vs. -40°C ~ 85°C). Product status is "Not For New Designs."

ECS-200-20-4XDN: Matches all critical electrical parameters and package specifications identically to the main part. Differs in product status (Active vs. Not For New Designs) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). Represents the modern equivalent with improved regulatory standing.

Parameter Comparison

Engineering Selection Recommendations

ECS-200-20-4XDN is the preferred substitute for new procurement and design updates. This part maintains identical electrical specifications and operating temperature range to the ECS-200-20-4DN while offering Active product status and ROHS3 compliance. The alignment of all critical parameters ensures direct circuit board compatibility without design modification.

ECS-200-20-4 is a secondary substitute suitable only for applications where the narrower operating temperature range (-10°C ~ 70°C) and reduced frequency stability (±50ppm) are acceptable. This part carries the same "Not For New Designs" status as the original component and provides no compliance advantage.

For applications requiring the full -40°C ~ 85°C operating range and modern regulatory compliance, ECS-200-20-4XDN is the sole recommended path forward.

Frequently Asked Questions (FAQ)

Q: Can ECS-200-20-4 be used as a direct replacement for ECS-200-20-4DN?

A: ECS-200-20-4 is electrically compatible at the circuit level due to matching frequency, tolerance, load capacitance, and ESR specifications. However, it operates over a narrower temperature range (-10°C ~ 70°C vs. -40°C ~ 85°C) and exhibits lower frequency stability (±50ppm vs. ±100ppm). Substitution is valid only if your application operates within the narrower temperature limits.

Q: What is the primary advantage of ECS-200-20-4XDN over ECS-200-20-4DN?

A: ECS-200-20-4XDN maintains all electrical and mechanical specifications of ECS-200-20-4DN while offering Active product status and ROHS3 compliance. It eliminates obsolescence risk and satisfies modern regulatory requirements without circuit modification.

Q: Are all three parts mechanically identical?

A: Yes. All three parts use the HC-49/US package with identical dimensions (0.447" L x 0.183" W, 11.35mm x 4.65mm) and maximum seated height (0.138", 4.60mm). They are mechanically interchangeable on through-hole PCB layouts.

Q: Which substitute should I select for a new design?

A: ECS-200-20-4XDN is the appropriate choice for new designs. It is the only part with Active status and modern compliance certifications, ensuring long-term availability and regulatory alignment.

Q: Do these parts require different circuit board footprints?

A: No. All three parts are through-hole HC-49/US components with identical footprint requirements. No PCB redesign is necessary when substituting between these parts.