ECS-120-18-9 Equivalent & Substitute Parts

Part Overview

The ECS-120-18-9 is a 12 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Locating equivalent substitute parts is necessary for ongoing support of legacy systems and maintenance applications where this specific frequency and package configuration remains required.

Substiute Parts

ECS-120-18-9

ECS Inc.In Stock: 1096ECS-120-18-9 Datasheet

Current PartRFQ

ECS-120-18-9X

ECS Inc.In Stock: 22460ECS-120-18-9X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-120-18-9 is determined by strict equivalence across the following critical parameters:

• Frequency: 12 MHz (exact match required)
• Frequency Stability: ±50ppm (tolerance specification)
• Load Capacitance: 18pF (circuit design dependent)
• ESR: 50 Ohms (impedance matching)
• Operating Mode: Fundamental (oscillation characteristic)
• Operating Temperature Range: -10°C ~ 60°C (environmental specification)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Package / Case: Cylindrical Can, Radial (physical form factor)
• Size / Dimension: 0.126" Dia x 0.354" L (3.20mm x 9.00mm) (mechanical fit)

The ECS-120-18-9X meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The ECS-120-18-9X is the direct parametric equivalent for the ECS-120-18-9. Both components share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the ECS-120-18-9 is classified as Not For New Designs, while the ECS-120-18-9X carries Active status. Additionally, the ECS-120-18-9X is confirmed ROHS3 Compliant, whereas the original part requires inventory verification for RoHS status. For applications requiring this specific 12 MHz crystal configuration, the ECS-120-18-9X provides equivalent performance with confirmed regulatory compliance and active manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the ECS-120-18-9X be used as a direct replacement for the ECS-120-18-9?

A: Yes. Both components are identical in frequency (12 MHz), load capacitance (18pF), ESR (50 Ohms), operating temperature range (-10°C ~ 60°C), and physical dimensions (0.126" Dia x 0.354" L). They are mechanically and electrically interchangeable.

Q: What is the significance of the product status difference?

A: The ECS-120-18-9 is marked Not For New Designs, indicating the manufacturer has discontinued active development for this part number. The ECS-120-18-9X is Active, meaning it receives ongoing manufacturer support and is recommended for current applications.

Q: Are there compliance differences between these parts?

A: The ECS-120-18-9X is confirmed ROHS3 Compliant. The original ECS-120-18-9 requires inventory verification for RoHS status. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Does the cylindrical can radial package affect substitution?

A: No. Both parts use identical cylindrical can radial packaging with the same physical dimensions. PCB footprints and mounting procedures remain unchanged.

Q: What inventory considerations apply?

A: The ECS-120-18-9 has 1,018 pieces in stock. The ECS-120-18-9X has 22,441 pieces available, providing greater supply availability for ongoing production or maintenance requirements.