ECS-65-12-1 Equivalent & Substitute Parts

Part Overview

The ECS-65-12-1 is a 6.5536 MHz through-hole crystal oscillator in HC-49/U package with 12pF load capacitance and 40 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line.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 this specific frequency and package configuration is required.

Substiute Parts

ECS-65-12-1

ECS Inc.In Stock: 2893ECS-65-12-1 Datasheet

Current PartRFQ

ECS-65-12-1X

ECS Inc.In Stock: 1076ECS-65-12-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-65-12-1 is determined by strict equivalence across the following critical parameters:

• Frequency: 6.5536 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 12pF (exact match required)
• ESR: 40 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 (minimum required)
• Operating Mode: Fundamental (exact match required)

The ECS-65-12-1X meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The ECS-65-12-1X is the direct parametric equivalent for the ECS-65-12-1. All electrical and mechanical specifications are identical. The primary distinction is product lifecycle status: the ECS-65-12-1 is marked Not For New Designs, while the ECS-65-12-1X carries Active status, indicating ongoing manufacturer support and availability.

For applications requiring RoHS3 compliance, the ECS-65-12-1X is the appropriate selection. The original ECS-65-12-1 is RoHS non-compliant and should be reserved for legacy system maintenance where compliance requirements do not apply.

Both parts share identical REACH and ECCN classifications, ensuring equivalent regulatory treatment in export and supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Can the ECS-65-12-1X be used as a direct replacement for the ECS-65-12-1?

A: Yes. The ECS-65-12-1X is a parametric equivalent with identical electrical and mechanical specifications. Both parts operate at 6.5536 MHz with ±30ppm tolerance, 12pF load capacitance, 40 Ohms ESR, and HC-49/U through-hole package. Physical dimensions and mounting characteristics are identical.

Q: What is the difference between these two part numbers?

A: The ECS-65-12-1X is the active production variant. The ECS-65-12-1 is classified as Not For New Designs. Additionally, the ECS-65-12-1X is ROHS3 compliant, while the ECS-65-12-1 is RoHS non-compliant. All other specifications are equivalent.

Q: Are there any compatibility concerns when substituting the ECS-65-12-1X for the ECS-65-12-1?

A: No compatibility concerns exist. Both parts are mechanically and electrically identical. The HC-49/U package, through-hole mounting, and all electrical parameters are the same. The substitution is direct.

Q: Which part should I select for new designs?

A: The ECS-65-12-1X should be selected for new designs. It carries Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Q: Are there inventory differences between these parts?

A: Yes. The ECS-65-12-1 has 2877 pieces in stock, while the ECS-65-12-1X has 1003 pieces in stock. Availability should be verified with your supplier for your specific application timeline.