ECS-110.5-20-1 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-110.5-20-1 is a 11.0592 MHz through-hole crystal oscillator in HC-49/U package with 20pF load capacitance and 30 Ohms equivalent series resistance. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Finding equivalent substitute parts is necessary for maintenance, repair, and legacy system support where original components are unavailable or inventory is depleted.

Substiute Parts

ECS-110.5-20-1

ECS Inc.In Stock: 1504ECS-110.5-20-1 Datasheet

Current PartRFQ

ECS-110.5-20-1X

ECS Inc.In Stock: 4093ECS-110.5-20-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-110.5-20-1 is determined by strict equivalence across the following critical parameters:

• Frequency: 11.0592 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 30 Ohms (exact match required)
• Package / Case: HC-49/U (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)
• Operating Mode: Fundamental (exact match required)

The substitute part ECS-110.5-20-1X meets all these criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ECS-110.5-20-1X is the direct substitute for ECS-110.5-20-1. Selection should be based on the following factors:

Product Status: The original ECS-110.5-20-1 is marked "Not For New Designs," while the ECS-110.5-20-1X carries "Active" status. For new applications or long-term availability, the ECS-110.5-20-1X is the appropriate choice.

Compliance: The ECS-110.5-20-1X is ROHS3 Compliant, whereas the original part is RoHS non-compliant. Systems requiring RoHS compliance must use the substitute part.

Electrical Equivalence: All electrical parameters—frequency, tolerance, load capacitance, ESR, and operating mode—are identical between the two parts, ensuring direct functional interchangeability in circuit applications.

Availability: The ECS-110.5-20-1X has significantly higher inventory (3987 Pcs) compared to the original part (1479 Pcs), providing better supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can ECS-110.5-20-1X be used as a direct replacement for ECS-110.5-20-1?

A: Yes. The ECS-110.5-20-1X is a parametric equivalent with identical electrical specifications across all critical parameters: frequency, tolerance, load capacitance, ESR, operating mode, package, and temperature range. No circuit modifications are required.

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

A: Both designations refer to the same HC-49/U package form factor. The "X" suffix in HC-49UX indicates a product line revision, typically associated with updated manufacturing processes or compliance certifications. The physical and electrical characteristics remain equivalent.

Q: Does the RoHS compliance difference affect substitution?

A: The ECS-110.5-20-1X is ROHS3 Compliant while the original is RoHS non-compliant. For applications or markets requiring RoHS compliance, the substitute part is mandatory. For legacy systems with no compliance requirements, both parts are functionally equivalent.

Q: Are there any temperature range limitations when substituting?

A: No. Both parts operate across the identical temperature range of -10°C to 70°C. Temperature performance is equivalent.

Q: What is the significance of the ±30ppm frequency tolerance specification?

A: The ±30ppm tolerance defines the maximum frequency deviation from the nominal 11.0592 MHz value. Both the original and substitute parts meet this specification, ensuring equivalent timing accuracy in applications requiring this precision level.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. Both parts use identical through-hole mounting in HC-49/U package with matching physical dimensions (0.447" L x 0.183" W, height 0.530" max). PCB footprints and mounting holes are compatible without modification.