ECS-73-20-5PDN-TR Equivalent & Substitute Parts

Part Overview

The ECS-73-20-5PDN-TR is a 7.3728 MHz crystal oscillator in HC-49/US surface mount package, designed for fundamental mode operation with 20pF load capacitance. This part carries a "Not For New Designs" status, making identification of equivalent alternatives essential for ongoing production and maintenance applications. The part is RoHS non-compliant and belongs to the CSM-7 series from ECS Inc.

Substiute Parts

ECS-73-20-5PDN-TR

ECS Inc.In Stock: 1762ECS-73-20-5PDN-TR Datasheet

Current PartRFQ

ECS-73-20-5P-TR

ECS Inc.In Stock: 5134ECS-73-20-5P-TR Datasheet

SimilarRFQ

ECS-73-20-5PXDN-TR

ECS Inc.In Stock: 4124ECS-73-20-5PXDN-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-73-20-5PDN-TR is determined by the following critical parameters:

• Frequency: 7.3728 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 60 Ohms (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Surface Mount (exact match required)

Two substitute parts meet these criteria: ECS-73-20-5P-TR and ECS-73-20-5PXDN-TR. Both maintain identical electrical specifications for frequency, tolerance, load capacitance, and ESR, with identical physical packaging. Variations in frequency stability and operating temperature range do not preclude substitution when the application requirements fall within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using ECS-73-20-5PDN-TR, the ECS-73-20-5PXDN-TR is the preferred substitute. This part maintains identical electrical and mechanical specifications while offering Active product status and ROHS3 compliance, addressing the obsolescence concern of the original part. The ECS-73-20-5PXDN-TR is suitable for designs requiring the full -40°C ~ 85°C operating temperature range.

The ECS-73-20-5P-TR serves as an alternative substitute when operating conditions are limited to -10°C ~ 70°C. This part provides higher frequency stability (±50ppm versus ±100ppm) and maintains the same electrical and physical characteristics. However, it retains "Not For New Designs" status and RoHS non-compliance.

Selection between substitutes depends on compliance requirements and operating temperature specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Can ECS-73-20-5P-TR replace ECS-73-20-5PDN-TR in all applications?

A: ECS-73-20-5P-TR is electrically and mechanically compatible when the application operates within -10°C ~ 70°C. Applications requiring the full -40°C ~ 85°C range require ECS-73-20-5PXDN-TR.

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

A: Frequency stability (±50ppm vs ±100ppm) indicates the maximum frequency deviation over the operating temperature range. Selection depends on the application's frequency accuracy requirements. Both parts meet the ±30ppm frequency tolerance specification.

Q: Why is ECS-73-20-5PXDN-TR recommended over the other substitutes?

A: ECS-73-20-5PXDN-TR carries Active product status and ROHS3 compliance, addressing long-term availability and regulatory requirements. It maintains identical electrical specifications and the full operating temperature range of the original part.

Q: Are all three parts physically interchangeable?

A: Yes. All three parts use HC-49/US surface mount package with identical dimensions (0.449" L x 0.189" W, 11.40mm x 4.80mm) and maximum seated height (0.169", 4.30mm).

Q: What does "Not For New Designs" status mean?

A: This designation indicates the manufacturer is not recommending the part for new circuit designs. Existing designs may continue using these parts, but new applications should transition to Active status alternatives such as ECS-73-20-5PXDN-TR.