ECS-50-S-1 5 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-50-S-1 is a 5 MHz through-hole crystal oscillator in HC-49/U package with 50 Ohms equivalent series resistance (ESR) and ±30ppm frequency tolerance. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where original stock is unavailable or depleted.

Substiute Parts

ECS-50-S-1

ECS Inc.In Stock: 1133ECS-50-S-1 Datasheet

Current PartRFQ

ECS-50-S-1X

ECS Inc.In Stock: 1084ECS-50-S-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-50-S-1 is determined by strict equivalence across the following critical parameters:

• Frequency: Must be exactly 5 MHz
• Frequency Tolerance: Must be ±30ppm or tighter
• ESR: Must be 50 Ohms
• Package / Case: Must be HC-49/U
• Mounting Type: Must be Through Hole
• Operating Mode: Must be Fundamental
• Operating Temperature Range: Must support -10°C ~ 70°C minimum
• Load Capacitance Configuration: Must be Series

The ECS-50-S-1X meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The ECS-50-S-1X is a direct parametric equivalent to the ECS-50-S-1. Both parts share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the ECS-50-S-1 is designated "Not For New Designs," while the ECS-50-S-1X carries "Active" status, indicating ongoing manufacturer support and availability.

For applications requiring RoHS compliance, the ECS-50-S-1X is ROHS3 compliant, whereas the ECS-50-S-1 is RoHS non-compliant. Both parts maintain identical REACH and ECCN classifications.

Selection between these parts should be based on application requirements for regulatory compliance and long-term component availability. The ECS-50-S-1X is the preferred choice for new applications and ongoing production due to its active status and RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the ECS-50-S-1X be used as a direct replacement for the ECS-50-S-1?

A: Yes. The ECS-50-S-1X meets all electrical and mechanical specifications of the ECS-50-S-1, including frequency, tolerance, ESR, package dimensions, and operating temperature range. Both parts are pin-compatible in HC-49/U through-hole applications.

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

A: The series designations reflect manufacturer product line evolution. Both designations refer to the same HC-49/U physical package with identical dimensions and mounting characteristics. The "X" suffix in HC-49UX indicates the newer product variant (ECS-50-S-1X).

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical frequency, tolerance, and ESR specifications.

Q: Are there any inventory or lead time considerations?

A: The ECS-50-S-1 has 1073 pieces in stock (legacy inventory), while the ECS-50-S-1X has 992 pieces in stock (active production). The ECS-50-S-1X, being an active product, typically has more predictable long-term availability.

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

A: Yes. Both parts have identical physical dimensions (0.447" L x 0.183" W, height 0.530" max) and through-hole mounting characteristics. No PCB layout modifications are required for substitution.