ECS-160-20-7S-TR Equivalent & Substitute Parts

Part Overview

The ECS-160-20-7S-TR is a 16 MHz fundamental mode crystal oscillator in 4-SOJ surface mount package with 20pF load capacitance and 40 Ohms equivalent series resistance. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary for legacy system support, design updates, and ensuring continued component availability for production and maintenance applications.

Substiute Parts

ECS-160-20-7S-TR

ECS Inc.In Stock: 954ECS-160-20-7S-TR Datasheet

Current PartRFQ

ECS-160-18-7SX-TR

ECS Inc.In Stock: 1012ECS-160-18-7SX-TR Datasheet

SimilarRFQ

ECS-160-20-7SX-TR

ECS Inc.In Stock: 1895ECS-160-20-7SX-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-160-20-7S-TR is determined by the following critical parameters:

• Frequency Match: 16 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: 4-SOJ, 9.40mm pitch (exact match required for mechanical compatibility)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)
• Load Capacitance: 20pF (primary electrical parameter; 18pF variants acceptable with circuit design verification)
• ESR: 40 Ohms (primary electrical parameter; higher ESR values acceptable with circuit design verification)

The ECS-160-20-7SX-TR qualifies as a direct substitute with identical load capacitance (20pF) but higher ESR (50 Ohms). The ECS-160-18-7SX-TR qualifies as a substitute with different load capacitance (18pF) and higher ESR (50 Ohms), requiring circuit design verification.

Parameter Comparison

Engineering Selection Recommendations

ECS-160-20-7SX-TR: This part is the preferred substitute for the ECS-160-20-7S-TR. It maintains identical frequency, tolerance, load capacitance, and package specifications. The ESR increase from 40 Ohms to 50 Ohms is within acceptable tolerance for most circuit applications. The ECS-160-20-7SX-TR offers improved compliance status (ROHS3 Compliant versus RoHS non-compliant), making it suitable for applications with regulatory requirements. Inventory availability is significantly higher (1834 Pcs versus 857 Pcs).

ECS-160-18-7SX-TR: This part is an alternative substitute when load capacitance variation is acceptable within circuit design parameters. The 18pF load capacitance differs from the main part's 20pF specification. The ESR is 50 Ohms. This part is suitable only when circuit design has been verified to accommodate the lower load capacitance value. ROHS3 compliance status is equivalent to the ECS-160-20-7SX-TR. Inventory availability is adequate (920 Pcs).

Both substitute parts share identical package, operating temperature range, and fundamental operating mode with the main part, ensuring mechanical and functional compatibility at the component level.

Frequently Asked Questions (FAQ)

Q: Can the ECS-160-20-7SX-TR be used as a direct replacement for the ECS-160-20-7S-TR?

A: Yes. Both parts have identical frequency (16 MHz), frequency tolerance (±30ppm), load capacitance (20pF), package (4-SOJ, 9.40mm pitch), and operating temperature range (-10°C ~ 70°C). The ESR difference (40 Ohms versus 50 Ohms) is within acceptable tolerance for standard crystal oscillator circuit applications.

Q: What is the difference between the ECS-160-20-7SX-TR and ECS-160-18-7SX-TR?

A: The primary difference is load capacitance: ECS-160-20-7SX-TR has 20pF (matching the main part), while ECS-160-18-7SX-TR has 18pF. Both have 50 Ohms ESR. The 18pF variant requires circuit design verification to confirm compatibility with the oscillator circuit's load capacitance specification.

Q: Are there any compliance differences between the main part and substitute parts?

A: Yes. The ECS-160-20-7S-TR is RoHS non-compliant, while both substitute parts (ECS-160-20-7SX-TR and ECS-160-18-7SX-TR) are ROHS3 Compliant. All three parts are REACH Unaffected. For applications requiring RoHS compliance, the substitute parts are required.

Q: Will the higher ESR of the substitute parts affect circuit performance?

A: The ESR increase from 40 Ohms to 50 Ohms is a 25% increase. For most standard crystal oscillator circuits, this change is within acceptable operating parameters. Circuit-specific verification is recommended for applications with tight ESR specifications or high-frequency stability requirements.

Q: Are the physical dimensions identical across all three parts?

A: Yes. All three parts share identical package type (4-SOJ, 9.40mm pitch), dimensions (12.50mm L x 4.60mm W), and maximum seated height (3.70mm). They are mechanically interchangeable on PCB layouts.

Q: Which substitute part should be selected for new production?

A: The ECS-160-20-7SX-TR is the recommended choice. It provides the closest electrical match (identical load capacitance), superior compliance status (ROHS3), and higher inventory availability. All three parts are marked Not For New Designs by the manufacturer, indicating they are legacy components.