ECS-61-32-4 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-61-32-4 is a 6.144 MHz through-hole crystal oscillator in HC-49/US package with 32pF load capacitance and 100 Ohms equivalent series resistance. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for maintenance, repair, and legacy system support where this specific frequency and package configuration remains required.

Substiute Parts

ECS-61-32-4

ECS Inc.In Stock: 1021ECS-61-32-4 Datasheet

Current PartRFQ

ECS-61-32-4X

ECS Inc.In Stock: 6884ECS-61-32-4X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-61-32-4 is determined by strict equivalence across the following critical parameters:

• Frequency: 6.144 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 32pF (exact match required)
• ESR: 100 Ohms (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. Secondary considerations include product status and compliance certifications, which may influence selection for new applications or regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The ECS-61-32-4X is a direct parametric equivalent to the ECS-61-32-4. Both parts share identical electrical and mechanical specifications across all critical parameters: frequency, tolerance, load capacitance, ESR, package, and operating temperature range.

The primary distinction between these parts is product status and compliance:

• ECS-61-32-4: Not For New Designs, RoHS non-compliant
• ECS-61-32-4X: Active product status, ROHS3 Compliant

For legacy system maintenance and repair where the ECS-61-32-4 is currently deployed, the ECS-61-32-4X provides functional equivalence with improved compliance posture. For new designs or systems requiring RoHS3 compliance, the ECS-61-32-4X is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the ECS-61-32-4X be used as a direct replacement for the ECS-61-32-4?

A: Yes. The ECS-61-32-4X meets all electrical and mechanical specifications of the ECS-61-32-4, including frequency, tolerance, load capacitance, ESR, HC-49/US package, and operating temperature range. Both parts are functionally interchangeable at the circuit level.

Q: What is the difference between these two parts?

A: The ECS-61-32-4X is the active production variant with ROHS3 compliance, while the ECS-61-32-4 is marked "Not For New Designs" and is RoHS non-compliant. Electrical and mechanical performance are identical.

Q: Are there any package or mounting differences?

A: No. Both parts use the HC-49/US through-hole package with identical dimensions (0.447" L x 0.183" W, 11.35mm x 4.65mm) and maximum seated height (0.138" / 4.60mm).

Q: Which part should I specify for a new design?

A: Specify the ECS-61-32-4X. It is the active product with current manufacturing support and RoHS3 compliance.

Q: Can I use these parts in applications requiring RoHS compliance?

A: The ECS-61-32-4X is ROHS3 compliant and suitable for RoHS-regulated applications. The ECS-61-32-4 is RoHS non-compliant and should not be used in applications with RoHS requirements.