ECS-SR1-4.68-A-TR Ceramic Resonator Equivalent & Substitute Parts

Part Overview

The ECS-SR1-4.68-A-TR is a 4.68 MHz ceramic resonator designed for surface mount applications. This component operates across a temperature range of -20°C to 80°C with a frequency stability of ±0.3% and impedance of 40 Ohms. The part is currently in Last Time Buy status, indicating limited availability and the need to identify suitable alternatives for ongoing production requirements.

Substiute Parts

ECS-SR1-3.58-A-TR

ECS Inc.In Stock: 4020ECS-SR1-3.58-A-TR Datasheet

Current PartRFQ

ECS-CTA-3.58-TR

ECS Inc.In Stock: 711ECS-CTA-3.58-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ECS-CTA-4.68-TR qualifies as a substitute for the ECS-SR1-4.68-A-TR based on the following critical parameters:

Matching Parameters:

• Frequency: 4.68 MHz (identical)
• Frequency Tolerance: ±0.5% (identical)
• Mounting Type: Surface Mount (identical)
• Type: Ceramic Resonator (identical)

Allowable Variations:

• Frequency Stability: ±0.2% (tighter than ±0.3% requirement)
• Impedance: 30 Ohms (lower than 40 Ohms)
• Operating Temperature Range: -25°C ~ 85°C (wider than -20°C ~ 80°C)
• Package Type: 2-SMD, No Lead (different form factor)
• Physical Dimensions: 6.00mm x 3.00mm x 1.70mm (smaller than 7.50mm x 3.30mm x 1.80mm)

The substitute part meets or exceeds the electrical specifications of the original part while offering improved temperature range coverage and tighter frequency stability.

Parameter Comparison

Engineering Selection Recommendations

The ECS-CTA-4.68-TR is the manufacturer-recommended substitute for the ECS-SR1-4.68-A-TR. The substitute part is in Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the original part.

The ECS-CTA-4.68-TR provides improved frequency stability at ±0.2% versus the original ±0.3%, and extends the operating temperature range to -25°C ~ 85°C, covering the original specification of -20°C ~ 80°C. The impedance difference of 30 Ohms versus 40 Ohms and the different package form factor (2-SMD, No Lead versus 2-SMD, Non-Standard) require circuit-level evaluation to confirm compatibility with existing PCB layouts and load impedance requirements.

Frequently Asked Questions (FAQ)

Q: Can the ECS-CTA-4.68-TR be used as a direct replacement for the ECS-SR1-4.68-A-TR?

A: The ECS-CTA-4.68-TR matches the critical electrical specifications (frequency, frequency tolerance, and mounting type). However, the different package form factor and physical dimensions require PCB layout verification. The impedance difference of 10 Ohms must be evaluated against circuit load requirements.

Q: What is the significance of the frequency stability difference?

A: The substitute part offers tighter frequency stability at ±0.2% compared to ±0.3%. This represents improved performance and does not create compatibility issues.

Q: Does the wider operating temperature range of the substitute part affect compatibility?

A: The ECS-CTA-4.68-TR operating range of -25°C ~ 85°C encompasses the original specification of -20°C ~ 80°C. This wider range provides additional margin and does not negatively impact compatibility.

Q: What are the package form factor implications?

A: The original part uses a 2-SMD, Non-Standard package measuring 7.50mm x 3.30mm x 1.80mm. The substitute uses a 2-SMD, No Lead package measuring 6.00mm x 3.00mm x 1.70mm. PCB footprint and land pattern compatibility must be verified before implementation.

Q: How does the impedance difference affect circuit performance?

A: The impedance change from 40 Ohms to 30 Ohms requires evaluation of the circuit's load impedance and matching network design. Circuit simulation or testing may be necessary to confirm performance equivalence.

Q: Why is the original part in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing the ECS-SR1-4.68-A-TR series. The ECS-CTA-4.68-TR, being in Active status, represents the recommended path for continued production and future designs.