ECS-80-20-1 8 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-80-20-1 is an 8 MHz through-hole crystal oscillator in HC-49/U package with 20pF load capacitance and 35 Ohms equivalent series resistance. This part carries a "Not For New Designs" status, making identification of suitable alternatives essential for ongoing production and new circuit implementations. The fundamental operating mode and specified frequency tolerance of ±30ppm establish the baseline requirements for equivalent substitution.

Substiute Parts

ECS-80-20-1

ECS Inc.In Stock: 1411ECS-80-20-1 Datasheet

Current PartRFQ

ECS-80-18-1

ECS Inc.In Stock: 2092ECS-80-18-1 Datasheet

SimilarRFQ

ECS-80-18-1X

ECS Inc.In Stock: 1525ECS-80-18-1X Datasheet

SimilarRFQ

ECS-80-20-1X

ECS Inc.In Stock: 2449ECS-80-20-1X Datasheet

Parametric EquivalentRFQ

MP080A

CTS-Frequency ControlsIn Stock: 2724MP080A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-80-20-1 is determined by strict alignment of critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Frequency: 8 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 35 Ohms (exact match required)
• Package / Case: HC-49/U (exact match required)
• Mounting Type: Through Hole (exact match required)

Secondary Compatibility Factors:

• Operating Temperature Range: Must encompass or match the original specification
• Operating Mode: Fundamental (exact match required)

Parts meeting all primary criteria are classified as direct parametric equivalents. Parts with identical electrical specifications but different product status or compliance certifications are suitable for applications where regulatory requirements permit substitution.

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalent (Recommended for New Designs):

ECS-80-20-1X is the primary substitute for ECS-80-20-1. Both parts share identical electrical specifications (8 MHz, ±30ppm tolerance, 20pF load capacitance, 35 Ohms ESR) and mechanical packaging (HC-49/U through-hole). ECS-80-20-1X carries Active product status and ROHS3 compliance, making it suitable for new circuit implementations where regulatory requirements mandate RoHS compliance.

Alternative with Extended Temperature Range:

MP080A (CTS-Frequency Controls) provides identical electrical parameters and load capacitance matching. The operating temperature range extends to -20°C, offering broader environmental coverage compared to the original specification. Physical dimensions differ slightly (10.85mm x 3.80mm versus 11.35mm x 4.65mm), though both conform to HC-49/U package classification. MP080A carries Active status and ROHS3 compliance.

Load Capacitance Variant (Conditional Use):

ECS-80-18-1 and ECS-80-18-1X both specify 18pF load capacitance, differing from the 20pF requirement of ECS-80-20-1. These parts are not direct parametric equivalents and introduce circuit design considerations related to load capacitance matching. Use only when circuit design explicitly permits 18pF load capacitance operation.

Frequently Asked Questions (FAQ)

Q: Can ECS-80-20-1X directly replace ECS-80-20-1 in existing designs?

A: Yes. ECS-80-20-1X matches all critical electrical parameters (frequency, tolerance, load capacitance, ESR) and mechanical specifications (HC-49/U package, through-hole mounting). The transition from "Not For New Designs" to Active status and ROHS3 compliance presents no functional incompatibility.

Q: What is the significance of load capacitance in crystal substitution?

A: Load capacitance directly affects crystal oscillation frequency and circuit stability. The ECS-80-20-1 specifies 20pF load capacitance. Substitutes must match this value exactly. Parts with 18pF load capacitance (ECS-80-18-1, ECS-80-18-1X) operate at different frequency points and are not interchangeable without circuit redesign.

Q: Does the physical dimension difference between ECS-80-20-1X and MP080A affect PCB layout?

A: Both parts conform to HC-49/U package specification and through-hole mounting. The dimensional variance (11.35mm x 4.65mm versus 10.85mm x 3.80mm) falls within HC-49/U tolerance. PCB footprints designed for HC-49/U accommodate both parts without modification.

Q: Why is RoHS compliance relevant for crystal substitution?

A: RoHS compliance status reflects manufacturing process and material composition. ECS-80-20-1 is RoHS non-compliant, while ECS-80-20-1X and MP080A are ROHS3 compliant. Selection depends on end-product regulatory requirements and supply chain specifications.

Q: Can MP080A be used in applications requiring -10°C minimum operating temperature?

A: Yes. MP080A specifies -20°C ~ 70°C operating range, which encompasses the -10°C ~ 70°C requirement of ECS-80-20-1. Extended lower temperature capability presents no functional limitation.