ECS-80-S-7S-TR Equivalent & Substitute Parts

Part Overview

The ECS-80-S-7S-TR is an 8 MHz crystal oscillator in a 4-SOJ surface mount package with 80 Ohms equivalent series resistance (ESR). This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary to maintain supply chain continuity for existing production lines and legacy system support.

Substiute Parts

ECS-80-S-7S-TR

ECS Inc.In Stock: 3737ECS-80-S-7S-TR Datasheet

Current PartRFQ

ECS-80-S-7SX-TR

ECS Inc.In Stock: 4210ECS-80-S-7SX-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-80-S-7S-TR is determined by the following critical parameters:

• Frequency: Must be 8 MHz
• Frequency Tolerance: Must be ±30ppm
• Frequency Stability: Must be ±50ppm
• Operating Mode: Must be Fundamental
• Package / Case: Must be 4-SOJ, 9.40mm pitch
• Physical Dimensions: Must match 0.492" L x 0.181" W (12.50mm x 4.60mm) and height 0.146" (3.70mm) maximum
• Operating Temperature Range: Must be -10°C ~ 70°C
• Mounting Type: Must be Surface Mount
• Moisture Sensitivity Level: Must be 1 (Unlimited)

The ECS-80-S-7SX-TR meets all these criteria and qualifies as a direct substitute. The primary difference is the ESR specification (100 Ohms versus 80 Ohms), which falls within acceptable tolerance ranges for crystal oscillator circuit design.

Parameter Comparison

Engineering Selection Recommendations

The ECS-80-S-7SX-TR is the qualified substitute for the ECS-80-S-7S-TR. Both parts are classified as "Not For New Designs" and share identical electrical and mechanical specifications with one exception: ESR variance (80 Ohms versus 100 Ohms).

The ECS-80-S-7SX-TR offers an additional compliance advantage: ROHS3 certification, whereas the main part is RoHS non-compliant. This makes the substitute preferable for applications subject to RoHS regulations. Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Selection between these parts should be based on circuit design requirements for ESR tolerance and regulatory compliance mandates for your application.

Frequently Asked Questions (FAQ)

Q: Can the ECS-80-S-7SX-TR replace the ECS-80-S-7S-TR in existing designs?

A: Yes. Both parts share identical frequency, tolerance, stability, package, dimensions, and operating temperature specifications. The 20 Ohm ESR difference (80 Ohms to 100 Ohms) is within acceptable crystal oscillator design margins for most applications.

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

A: ESR affects crystal oscillator circuit performance, including startup time and power consumption. The ECS-80-S-7SX-TR's higher ESR (100 Ohms) may require minor circuit tuning in sensitive applications, but both parts operate within the same fundamental frequency and stability parameters.

Q: Are there any compliance differences between these substitute parts?

A: Yes. The ECS-80-S-7SX-TR is ROHS3 compliant, while the ECS-80-S-7S-TR is RoHS non-compliant. For applications requiring RoHS compliance, the substitute part is the appropriate choice.

Q: Do these parts have identical physical dimensions and mounting requirements?

A: Yes. Both parts use the 4-SOJ package with 9.40mm pitch, identical length and width (0.492" x 0.181"), and maximum seated height of 0.146" (3.70mm). They are directly interchangeable from a PCB layout and assembly perspective.

Q: Why are both parts marked "Not For New Designs"?

A: This status indicates both the main part and substitute have reached end-of-life. For new product development, consult ECS Inc. for current-generation 8 MHz crystal oscillator alternatives.