ECS-73-18-10 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-73-18-10 is a 7.3728 MHz through-hole crystal oscillator with 18pF load capacitance, designed for fundamental mode operation in cylindrical can radial packaging. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Organizations using this part in active applications require identified substitute components that maintain electrical and mechanical compatibility to ensure continued system functionality and supply chain continuity.

Substiute Parts

ECS-73-18-10

ECS Inc.In Stock: 1884ECS-73-18-10 Datasheet

Current PartRFQ

ECS-73-18-10X

ECS Inc.In Stock: 21520ECS-73-18-10X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-73-18-10 is determined by strict equivalence across the following critical parameters:

• Frequency: 7.3728 MHz (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• ESR: 100 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -10°C ~ 60°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Cylindrical Can, Radial (exact match required)
• Physical Dimensions: 0.126" Dia x 0.413" L (exact match required)

The ECS-73-18-10X meets all substitution criteria as a parametric equivalent with identical electrical specifications and mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

The ECS-73-18-10X is the direct substitute for the ECS-73-18-10. Selection between these parts is determined by product lifecycle and regulatory requirements:

ECS-73-18-10X is recommended for:

• New designs and production runs
• Applications requiring RoHS3 compliance
• Systems with active component support requirements
• Long-term supply chain continuity

ECS-73-18-10 may be retained for:

• Legacy systems already in production where component change control is restricted
• Applications where RoHS non-compliance is not a regulatory constraint
• Existing inventory utilization in non-regulated markets

Both parts are electrically and mechanically interchangeable. The ECS-73-18-10X offers superior product lifecycle status and regulatory compliance without any electrical or mechanical trade-offs.

Frequently Asked Questions (FAQ)

Q: Can the ECS-73-18-10X be used as a direct replacement for the ECS-73-18-10?

A: Yes. The ECS-73-18-10X is a parametric equivalent with identical frequency, load capacitance, ESR, operating temperature range, and physical dimensions. No circuit modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The ECS-73-18-10X is the active production equivalent with ROHS3 compliance, while the ECS-73-18-10 is classified as "Not For New Designs." Both parts maintain identical electrical and mechanical specifications.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the same cylindrical can radial package with dimensions of 0.126" Dia x 0.413" L (3.20mm x 10.50mm). PCB footprints and mounting holes are identical.

Q: Does the ECS-73-18-10X have the same load capacitance and ESR?

A: Yes. Both parts specify 18pF load capacitance and 100 Ohms ESR. Circuit design parameters remain unchanged.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -10°C to 60°C. Temperature performance is identical.

Q: Are there any compliance differences?

A: The ECS-73-18-10X is ROHS3 compliant, while the ECS-73-18-10 is RoHS non-compliant. Both are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can I use the ECS-73-18-10 in new product designs?

A: The ECS-73-18-10 is marked "Not For New Designs." The ECS-73-18-10X is the recommended choice for new applications.