ECS-30-S-1 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-30-S-1 is a 3 MHz through-hole crystal oscillator in HC-49/U package with 200 Ohms equivalent series resistance (ESR) and ±30ppm frequency tolerance. This part carries a "Not For New Designs" status, indicating it is obsolete or superseded. Identifying equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where direct replacement is required.

Substiute Parts

ECS-30-S-1

ECS Inc.In Stock: 1689ECS-30-S-1 Datasheet

Current PartRFQ

ECS-30-S-1X

ECS Inc.In Stock: 2159ECS-30-S-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-30-S-1 is determined by strict equivalence across the following critical parameters:

• Frequency: Must be exactly 3 MHz
• Frequency Tolerance: Must be ±30ppm or tighter
• ESR: Must be 200 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-30-S-1X meets all these criteria and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The ECS-30-S-1X is a direct parametric equivalent to the ECS-30-S-1. All electrical and mechanical specifications are identical. The primary advantage of the ECS-30-S-1X is its Active product status and ROHS3 compliance, compared to the obsolete status and RoHS non-compliance of the original part. For applications requiring regulatory compliance or long-term component availability, the ECS-30-S-1X is the appropriate selection. Both parts are manufactured by ECS Inc. and share identical package, frequency, tolerance, and operating characteristics.

Frequently Asked Questions (FAQ)

Q: Can the ECS-30-S-1X be used as a direct replacement for the ECS-30-S-1?

A: Yes. The ECS-30-S-1X is a parametric equivalent with identical frequency (3 MHz), tolerance (±30ppm), ESR (200 Ohms), package (HC-49/U), and operating temperature range (-10°C ~ 70°C). No circuit modifications are required.

Q: What is the difference between the ECS-30-S-1 and ECS-30-S-1X?

A: The primary differences are product status and regulatory compliance. The ECS-30-S-1 is marked "Not For New Designs" and is RoHS non-compliant. The ECS-30-S-1X is Active and ROHS3 compliant. All electrical and mechanical parameters are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts have identical dimensions: 0.447" L x 0.183" W (11.35mm x 4.65mm) with a maximum seated height of 0.530" (13.46mm). Both use HC-49/U through-hole packaging.

Q: Does the ECS-30-S-1X have the same ESR?

A: Yes. Both parts have 200 Ohms ESR and operate in Fundamental mode with Series load capacitance configuration.

Q: Is the ECS-30-S-1X available in stock?

A: Inventory status should be confirmed with the supplier. The ECS-30-S-1X is listed as Active, indicating ongoing production and availability.