ECS-180-20-1X Equivalent & Substitute Parts

Part Overview

The ECS-180-20-1X is an 18 MHz through-hole crystal oscillator in HC-49/U package, designed for fundamental mode operation with 20pF load capacitance and 20 Ohms equivalent series resistance. This part is currently in active production status. Substitute parts may be required due to inventory constraints, design phase transitions, or supply chain considerations. The ECS-180-20-1 represents a parametrically equivalent alternative from the same manufacturer, though with different product lifecycle status.

Substiute Parts

ECS-180-20-1X

ECS Inc.In Stock: 1230ECS-180-20-1X Datasheet

Current PartRFQ

ECS-180-20-1

ECS Inc.In Stock: 1129ECS-180-20-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-180-20-1X is determined by strict parameter matching across the following critical specifications:

• Frequency: 18 MHz (exact match required)
• Frequency Tolerance: ±30 ppm (exact match required)
• Load Capacitance: 20 pF (exact match required)
• ESR: 20 Ohms (exact match required)
• Package / Case: HC-49/U (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -10°C to 70°C (exact match required)

The ECS-180-20-1 meets all parametric requirements for direct substitution. Differences in product status, RoHS compliance, and series designation do not affect electrical or mechanical compatibility when these core parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

The ECS-180-20-1X is the preferred selection for new designs due to its Active product status and ROHS3 compliance. This part meets current regulatory requirements and benefits from ongoing manufacturer support.

The ECS-180-20-1 is electrically and mechanically equivalent but carries a "Not For New Designs" designation and does not meet RoHS3 compliance. This part is suitable only for legacy system maintenance, repair, or applications where RoHS compliance is not required. Selection of ECS-180-20-1 should be limited to situations where ECS-180-20-1X is unavailable and regulatory constraints do not apply.

Both parts share identical electrical performance, frequency characteristics, and physical dimensions, ensuring functional interchangeability within their respective application contexts.

Frequently Asked Questions (FAQ)

Q: Can ECS-180-20-1 be used as a direct replacement for ECS-180-20-1X in new designs?

A: No. While the parts are parametrically equivalent, ECS-180-20-1 carries a "Not For New Designs" status and is not RoHS3 compliant. New designs must use ECS-180-20-1X.

Q: What are the critical parameters that must match for substitution?

A: Frequency (18 MHz), frequency tolerance (±30 ppm), load capacitance (20 pF), ESR (20 Ohms), package type (HC-49/U), and operating temperature range (-10°C to 70°C) must all match exactly.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use the HC-49/U package with identical dimensions of 11.35 x 4.65 mm and maximum seated height of 13.46 mm, ensuring identical PCB footprint compatibility.

Q: What is the difference between the HC-49UX and HC-49U series designations?

A: Series designation reflects internal manufacturing or specification revisions but does not affect electrical or mechanical compatibility when all parametric specifications are identical.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a regulatory and material composition requirement, not an electrical performance specification. Both parts deliver identical electrical characteristics.

Q: Can these parts be used interchangeably in legacy systems?

A: Yes, provided the legacy system has no RoHS compliance requirements. The electrical and mechanical specifications are identical, ensuring functional equivalence.