ECS-184-20-4DN 18.432 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-184-20-4DN is a 18.432 MHz through-hole crystal oscillator in HC-49/US package with 20pF load capacitance and 40 Ohms equivalent series resistance. This component is classified as "Not For New Designs," indicating it is a legacy product. Finding equivalent or substitute parts is necessary for applications requiring continued supply, design flexibility, or compliance with updated manufacturing standards.

Substiute Parts

ECS-184-20-4DN

ECS Inc.In Stock: 13754ECS-184-20-4DN Datasheet

Current PartRFQ

ECS-184-20-4

ECS Inc.In Stock: 1381ECS-184-20-4 Datasheet

SimilarRFQ

ECS-184-20-4XDN

ECS Inc.In Stock: 12842ECS-184-20-4XDN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-184-20-4DN is determined by the following critical parameters:

• Frequency: 18.432 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 40 Ohms (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)

The substitute parts identified maintain these core electrical and mechanical specifications. Variations in frequency stability, operating temperature range, product status, and compliance certifications are noted but do not prevent functional substitution when the above parameters align.

Parameter Comparison

Engineering Selection Recommendations

ECS-184-20-4XDN is the primary substitute for new applications and ongoing designs. This part maintains identical electrical specifications (frequency, tolerance, load capacitance, ESR) and mechanical compatibility (HC-49/US package, through-hole mounting) while offering Active product status and ROHS3 compliance. The operating temperature range (-40°C ~ 85°C) and frequency stability (±100ppm) match the original ECS-184-20-4DN.

ECS-184-20-4 is a functional equivalent with identical electrical parameters but presents operational constraints. The reduced operating temperature range (-10°C ~ 70°C) limits applicability to environments within this narrower specification. The improved frequency stability (±50ppm versus ±100ppm) may provide performance benefits in timing-sensitive applications. Both the original part and this substitute carry "Not For New Designs" status.

For applications requiring legacy component continuity with legacy product status, ECS-184-20-4 remains functionally compatible. For new designs or applications requiring extended temperature operation and modern compliance standards, ECS-184-20-4XDN is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can ECS-184-20-4XDN directly replace ECS-184-20-4DN in existing designs?

A: Yes. Both parts share identical frequency (18.432 MHz), frequency tolerance (±30ppm), load capacitance (20pF), ESR (40 Ohms), and HC-49/US package specifications. The ECS-184-20-4XDN provides equivalent electrical performance with extended product support and improved compliance status.

Q: What is the difference between ECS-184-20-4 and ECS-184-20-4DN?

A: Both parts meet the same electrical specifications for frequency, tolerance, load capacitance, and ESR. The primary difference is operating temperature range: ECS-184-20-4DN operates from -40°C to 85°C, while ECS-184-20-4 operates from -10°C to 70°C. Selection depends on the application's thermal requirements.

Q: Are all three parts physically interchangeable?

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 through-hole mounting. Physical installation is identical across all variants.

Q: Which substitute part should be used for new product designs?

A: ECS-184-20-4XDN is recommended for new designs. It carries Active product status, ROHS3 compliance, and maintains all electrical and mechanical specifications of the original part.

Q: Does frequency stability affect substitution compatibility?

A: Frequency stability (±100ppm for ECS-184-20-4DN and ECS-184-20-4XDN; ±50ppm for ECS-184-20-4) does not prevent functional substitution when frequency tolerance requirements are met. Selection should account for application timing precision requirements.