ECS-120-20-19A-TR Crystal Equivalent & Substitute Parts

Part Overview

The ECS-120-20-19A-TR is a 12 MHz fundamental mode 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. Alternative models may be required due to inventory constraints, packaging preferences, or specific mechanical fit requirements in compact designs.

Substiute Parts

ECS-120-20-19A-TR

ECS Inc.In Stock: 1338ECS-120-20-19A-TR Datasheet

Current PartRFQ

ECS-120-20-20A-TR

ECS Inc.In Stock: 7574ECS-120-20-20A-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The ECS-120-20-20A-TR qualifies as a direct substitute for the ECS-120-20-19A-TR based on the following critical parameters:

• Frequency Match: Both parts operate at 12 MHz
• Frequency Tolerance Match: Both maintain ±30ppm tolerance
• Load Capacitance Match: Both specify 20pF load capacitance
• Operating Mode Match: Both operate in Fundamental mode
• Package Match: Both use 2-SMD, No Lead surface mount configuration
• Temperature Range Match: Both operate across -10°C ~ 70°C
• Compliance Match: Both are ROHS3 Compliant and REACH Unaffected

The primary differences are ESR (Equivalent Series Resistance) and physical dimensions, which do not affect functional substitution when the electrical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both the ECS-120-20-19A-TR and ECS-120-20-20A-TR are Active products with full ROHS3 compliance and REACH Unaffected status, making them suitable for current production applications. The ECS-120-20-20A-TR offers a more compact footprint (7.00mm x 5.00mm versus 11.00mm x 5.00mm) and lower ESR (60 Ohms versus 80 Ohms), which may provide advantages in space-constrained designs or applications sensitive to series resistance. Both parts maintain identical electrical specifications for frequency, tolerance, load capacitance, and operating temperature range, ensuring functional interchangeability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the ECS-120-20-20A-TR replace the ECS-120-20-19A-TR in existing designs?

A: Yes. Both parts share identical frequency (12 MHz), frequency tolerance (±30ppm), load capacitance (20pF), operating mode (Fundamental), and temperature range (-10°C ~ 70°C). The primary differences are physical dimensions and ESR, which do not affect electrical compatibility when these core parameters match.

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

A: The ECS-120-20-20A-TR has lower ESR (60 Ohms) compared to the ECS-120-20-19A-TR (80 Ohms). Lower ESR generally reduces power dissipation and can improve circuit performance in sensitive applications, but both values are within acceptable ranges for standard 12 MHz crystal applications.

Q: Are there packaging differences between these parts?

A: Both parts use 2-SMD, No Lead surface mount packages. The ECS-120-20-20A-TR is physically smaller (7.00mm x 5.00mm, 1.70mm height) compared to the ECS-120-20-19A-TR (11.00mm x 5.00mm, 2.00mm height). Verify PCB layout compatibility before substitution in space-constrained applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ECS-120-20-19A-TR and ECS-120-20-20A-TR are ROHS3 Compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, making them suitable for equivalent use in regulated applications.

Q: What determines whether a crystal can substitute for another?

A: Substitution is valid when frequency, frequency tolerance, load capacitance, operating mode, temperature range, and package type are identical. Physical dimensions and ESR may differ without affecting functional compatibility, provided the circuit design does not have specific constraints on these parameters.