ECS-120-32-1 Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The ECS-120-32-1 is a 12 MHz through-hole crystal oscillator in HC-49/U package with 32pF load capacitance and 30 Ohms equivalent series resistance. This part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for existing applications and legacy system support.

Substiute Parts

ECS-120-32-1

ECS Inc.In Stock: 932ECS-120-32-1 Datasheet

Current PartRFQ

ECS-120-32-1X

ECS Inc.In Stock: 1813ECS-120-32-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-120-32-1 is determined by strict equivalence across the following critical parameters:

• Frequency: 12 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 32pF (exact match required)
• ESR: 30 Ohms (exact match required)
• Operating Mode: Fundamental (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)

Only parts meeting all these parameters are classified as direct parametric equivalents and may be substituted without circuit redesign or re-qualification.

Parameter Comparison

Engineering Selection Recommendations

The ECS-120-32-1X is a direct parametric equivalent to the ECS-120-32-1. All electrical and mechanical specifications are identical. The primary distinction is product lifecycle status: the ECS-120-32-1 is designated "Not For New Designs," while the ECS-120-32-1X maintains "Active" status.

For applications requiring RoHS3 compliance, the ECS-120-32-1X is the appropriate selection, as it meets ROHS3 requirements while the original part is RoHS non-compliant. Both parts share identical MSL, REACH, ECCN, and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the ECS-120-32-1X be used as a direct replacement for the ECS-120-32-1?

A: Yes. The ECS-120-32-1X meets all electrical and mechanical parameters of the ECS-120-32-1, including frequency, tolerance, load capacitance, ESR, operating mode, package type, and temperature range. No circuit modifications are required.

Q: What is the difference between these two parts?

A: The ECS-120-32-1X is the active production equivalent. The primary differences are product status (Active vs. Not For New Designs) and RoHS compliance (ROHS3 Compliant vs. RoHS non-compliant). All functional specifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the HC-49/U package with identical dimensions: 0.447" L x 0.183" W (11.35mm x 4.65mm) and maximum seated height of 0.530" (13.46mm). Both are through-hole mounted components.

Q: Does the ECS-120-32-1X require different handling or storage?

A: No. Both parts share identical Moisture Sensitivity Level (MSL 1 - Unlimited), indicating no special moisture control is required during storage or handling.

Q: Which part should be selected for new designs?

A: The ECS-120-32-1X should be selected for new designs, as it carries Active product status and ROHS3 compliance. The ECS-120-32-1 is designated "Not For New Designs" and should be reserved for legacy system support only.