ECS-143-20-19A-TR Crystal Equivalent & Substitute Parts

Part Overview

The ECS-143-20-19A-TR is a 14.31818 MHz crystal oscillator in a 2-SMD, No Lead surface mount package. This active product is designed for applications requiring precise frequency generation with ±30ppm tolerance and 20pF load capacitance. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for standard manufacturing and storage conditions. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, packaging format changes, or design optimization needs.

Substiute Parts

ECS-143-20-19A-TR

ECS Inc.In Stock: 1997ECS-143-20-19A-TR Datasheet

Current PartRFQ

ECS-143-20-23A-TR

ECS Inc.In Stock: 1481ECS-143-20-23A-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-143-20-19A-TR is determined by the following critical parameters:

• Frequency Match: 14.31818 MHz (exact)
• Frequency Tolerance: ±30ppm (exact)
• Load Capacitance: 20pF (exact)
• Operating Mode: Fundamental (exact)
• Operating Temperature Range: -10°C ~ 70°C (exact)
• Package Type: 2-SMD, No Lead (exact)
• Compliance: ROHS3 Compliant, MSL 1 (exact)

The ECS-143-20-23A-TR qualifies as a substitute based on matching all critical electrical parameters and compliance requirements. Variations in ESR (50 Ohms vs. 80 Ohms) and physical dimensions remain within acceptable substitution criteria for this product category, as they do not affect the core frequency generation function or circuit compatibility when load capacitance and operating conditions are identical.

Parameter Comparison

Engineering Selection Recommendations

Both the ECS-143-20-19A-TR and ECS-143-20-23A-TR are active products with ROHS3 compliance and MSL 1 ratings, ensuring equivalent regulatory and environmental qualification. Selection between these parts should be based on:

Packaging Format: The main part is supplied in Cut Tape (CT) format, while the substitute is supplied in Tape & Reel (TR) format. Choose based on assembly line requirements and minimum order quantities.

Physical Dimensions: The substitute part features a smaller footprint (6.00mm x 4.60mm vs. 11.00mm x 5.00mm) and lower profile (1.10mm vs. 2.00mm). Verify PCB layout compatibility before substitution.

ESR Specification: The substitute part has higher ESR (80 Ohms vs. 50 Ohms). Confirm that circuit design accommodates this variation, particularly in oscillator startup and drive level calculations.

Both parts maintain identical frequency, tolerance, load capacitance, and operating temperature specifications, ensuring functional equivalence in applications where these parameters are the primary design constraints.

Frequently Asked Questions (FAQ)

Q: Can ECS-143-20-23A-TR replace ECS-143-20-19A-TR in production?

A: Yes, provided that PCB layout accommodates the smaller physical dimensions (6.00mm x 4.60mm vs. 11.00mm x 5.00mm) and lower profile (1.10mm vs. 2.00mm), and circuit design tolerates the higher ESR specification (80 Ohms vs. 50 Ohms).

Q: What is the primary difference between these two parts?

A: The main differences are packaging format (Cut Tape vs. Tape & Reel), physical dimensions, profile height, and ESR value. All critical electrical parameters—frequency, tolerance, load capacitance, and operating temperature—are identical.

Q: Are both parts ROHS3 compliant?

A: Yes, both ECS-143-20-19A-TR and ECS-143-20-23A-TR are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: Does the ESR difference affect circuit performance?

A: ESR affects oscillator startup behavior and drive level. Verify that your circuit design parameters accommodate 80 Ohms ESR before substituting the ECS-143-20-23A-TR for the main part.

Q: Can I use the substitute part if my PCB layout is already fixed?

A: Only if your PCB footprint accommodates the smaller dimensions (6.00mm x 4.60mm) and lower profile (1.10mm) of the substitute part. Physical compatibility must be confirmed before assembly.