ECS-40.3-S-5P-TR Crystal Equivalent & Substitute Parts

Part Overview

The ECS-40.3-S-5P-TR is a 4.032 MHz crystal oscillator in HC-49/US surface mount package, designed for fundamental mode operation with 150 Ohms equivalent series resistance. This part is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Organizations requiring this frequency specification for legacy system maintenance or component replacement should evaluate the available substitute options that maintain electrical and mechanical compatibility.

Substiute Parts

ECS-40.3-S-5P-TR

ECS Inc.In Stock: 2480ECS-40.3-S-5P-TR Datasheet

Current PartRFQ

ECS-40.3-S-5PX-TR

ECS Inc.In Stock: 928ECS-40.3-S-5PX-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-40.3-S-5P-TR is determined by strict equivalence across the following critical parameters:

• Frequency: 4.032 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• ESR: 150 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)
• Load Capacitance: Series (exact match required)
• Physical Dimensions: 0.449" L x 0.189" W, Height 0.169" max (exact match required)

The ECS-40.3-S-5PX-TR meets all substitution criteria as a parametric equivalent within the CSM-7X series.

Parameter Comparison

Engineering Selection Recommendations

The ECS-40.3-S-5PX-TR is the direct parametric equivalent for the ECS-40.3-S-5P-TR. Both parts maintain identical electrical specifications (frequency, tolerance, stability, ESR) and mechanical compatibility (package, dimensions, mounting type).

The primary distinction between these parts is product lifecycle status and regulatory compliance. The ECS-40.3-S-5P-TR is designated "Not For New Designs," while the ECS-40.3-S-5PX-TR carries "Active" status. Additionally, the substitute part is ROHS3 compliant, whereas the main part is RoHS non-compliant. For applications requiring current regulatory compliance or long-term component availability, the ECS-40.3-S-5PX-TR is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the ECS-40.3-S-5PX-TR be used as a direct replacement for the ECS-40.3-S-5P-TR?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters: 4.032 MHz frequency, ±30ppm tolerance, ±50ppm stability, 150 Ohms ESR, HC-49/US package, and identical physical dimensions. No circuit modifications are required.

Q: What is the difference between the CSM-7 and CSM-7X series?

A: The CSM-7X series represents the current product line evolution. The ECS-40.3-S-5PX-TR (CSM-7X) maintains full electrical and mechanical compatibility with the legacy CSM-7 series while offering Active product status and improved regulatory compliance (ROHS3).

Q: Are there any compliance differences between these parts?

A: Yes. The ECS-40.3-S-5P-TR is RoHS non-compliant, while the ECS-40.3-S-5PX-TR is ROHS3 compliant. Both parts are REACH Unaffected and classified under ECCN EAR99. For applications subject to RoHS requirements, the substitute part is the appropriate choice.

Q: Will the ECS-40.3-S-5PX-TR fit the same PCB footprint?

A: Yes. Both parts use the HC-49/US package with identical dimensions: 0.449" L x 0.189" W (11.40mm x 4.80mm) and maximum seated height of 0.169" (4.30mm). PCB layout modifications are not necessary.

Q: What is the moisture sensitivity level for these parts?

A: Both the ECS-40.3-S-5P-TR and ECS-40.3-S-5PX-TR have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.