ECS-SR1-6.00-A-TR Equivalent & Substitute Parts

Part Overview

The ECS-SR1-6.00-A-TR is a 6 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 classified as Last Time Buy, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this resonator.

Key Parameters

Parameter	Value
Frequency	6 MHz
Frequency Stability	±0.3%
Frequency Tolerance	±0.5%
Impedance	40 Ohms
Operating Temperature Range	-20°C ~ 80°C
Mounting Type	Surface Mount
Package Type	2-SMD
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

The ECS-CTA-6.00-TR is identified as the manufacturer-recommended substitute for the ECS-SR1-6.00-A-TR. Substitution eligibility is determined by the following critical parameters:

Frequency Match: Both parts operate at 6 MHz, ensuring functional compatibility in resonator applications
Mounting Type: Both utilize surface mount technology, maintaining PCB assembly compatibility
Package Configuration: Both employ 2-SMD package format, supporting identical footprint placement
Frequency Stability: The substitute provides ±0.2% stability, which exceeds the original ±0.3% specification
Operating Temperature Range: The substitute extends to -25°C ~ 85°C, encompassing the original -20°C ~ 80°C range
Impedance Variation: The substitute operates at 30 Ohms versus the original 40 Ohms; this parameter difference requires circuit-level evaluation

Parameter Comparison

Parameter	ECS-SR1-6.00-A-TR (Original)	ECS-CTA-6.00-TR (Substitute)
Manufacturer	ECS Inc.	ECS Inc.
Frequency	6 MHz	6 MHz
Frequency Stability	±0.3%	±0.2%
Frequency Tolerance	±0.5%	±0.5%
Impedance	40 Ohms	30 Ohms
Operating Temperature Range	-20°C ~ 80°C	-25°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	2-SMD, Non-Standard	2-SMD, No Lead
Size / Dimension	0.295" L x 0.130" W (7.50mm x 3.30mm)	0.236" L x 0.118" W (6.00mm x 3.00mm)
Height	0.071" (1.80mm)	0.067" (1.70mm)
Product Status	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	Not specified
Moisture Sensitivity Level	MSL 1 (Unlimited)	Not specified

Engineering Selection Recommendations

The ECS-CTA-6.00-TR is the manufacturer-recommended substitute for the ECS-SR1-6.00-A-TR. Selection of this substitute is supported by the following factors:

Active Product Status: The substitute maintains active production status, ensuring long-term availability and supply chain stability
Regulatory Compliance: The original part is ROHS3 compliant; compliance status for the substitute should be verified with the manufacturer
Frequency Alignment: Both parts operate at 6 MHz with compatible frequency tolerance specifications
Temperature Range Extension: The substitute provides an extended operating temperature range, offering broader application flexibility
Impedance Consideration: The 10 Ohm impedance reduction (40 Ohms to 30 Ohms) requires circuit validation to confirm compatibility with existing load networks and matching components
Physical Footprint: The substitute features a smaller package footprint, which may require PCB layout verification for existing designs

Frequently Asked Questions (FAQ)

Q: Can the ECS-CTA-6.00-TR be used as a direct replacement for the ECS-SR1-6.00-A-TR?

A: The ECS-CTA-6.00-TR is the manufacturer-recommended substitute and shares the same 6 MHz frequency specification and surface mount package format. However, the impedance difference (30 Ohms versus 40 Ohms) and physical dimensions require circuit-level evaluation before implementation.

Q: What is the significance of the impedance difference between these parts?

A: The substitute operates at 30 Ohms impedance compared to the original 40 Ohms. This parameter affects the resonator's interaction with circuit load networks and matching components. Circuit validation is necessary to confirm compatibility.

Q: Are there physical footprint differences between these resonators?

A: Yes. The original ECS-SR1-6.00-A-TR measures 7.50mm x 3.30mm x 1.80mm, while the substitute ECS-CTA-6.00-TR measures 6.00mm x 3.00mm x 1.70mm. The substitute is smaller and may require PCB layout modification for existing designs.

Q: What is the product status difference, and why does it matter?

A: The original part is classified as Last Time Buy, indicating discontinued production. The substitute is Active, ensuring continued availability and manufacturing support. This makes the substitute the appropriate choice for new designs and ongoing production requirements.

Q: How do the frequency stability specifications compare?

A: The original part provides ±0.3% frequency stability, while the substitute provides ±0.2%. The substitute's tighter stability specification exceeds the original performance requirement.

Q: What temperature range considerations apply to these parts?

A: The original operates from -20°C to 80°C, while the substitute operates from -25°C to 85°C. The substitute's extended range provides additional thermal margin for applications operating at temperature extremes.

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