ECS-196.6-S-7S-TR Equivalent & Substitute Parts

Part Overview

The ECS-196.6-S-7S-TR is a 19.6608 MHz crystal oscillator in Surface Mount Device (SMD) packaging, classified as a 4-SOJ with 9.40mm pitch. This component is designed for fundamental mode operation across industrial temperature ranges and is currently in active production status. Alternative part selection becomes necessary when addressing specific compliance requirements, inventory constraints, or ESR (Equivalent Series Resistance) specifications that differ from the primary part number.

Substiute Parts

ECS-196.6-S-7S-TR

ECS Inc.In Stock: 762ECS-196.6-S-7S-TR Datasheet

Current PartRFQ

ECS-196.6-S-7SX-TR

ECS Inc.In Stock: 2185ECS-196.6-S-7SX-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The ECS-196.6-S-7SX-TR qualifies as a direct substitute for the ECS-196.6-S-7S-TR based on the following allowed parameters:

• Identical frequency specification: 19.6608 MHz
• Identical frequency tolerance: ±30ppm
• Identical frequency stability: ±50ppm
• Identical operating mode: Fundamental
• Identical operating temperature range: -10°C ~ 70°C
• Identical mounting type: Surface Mount
• Identical height specification: 0.146" (3.70mm)
• Identical moisture sensitivity level: MSL 1 (Unlimited)

The primary difference between these parts is the ESR specification: the main part specifies 40 Ohms, while the substitute specifies 50 Ohms. This variance falls within acceptable substitution parameters for crystal oscillator applications where ESR tolerance is not a critical design constraint.

Parameter Comparison

Engineering Selection Recommendations

Selection between ECS-196.6-S-7S-TR and ECS-196.6-S-7SX-TR should be based on regulatory compliance requirements and ESR tolerance specifications:

The ECS-196.6-S-7SX-TR is the preferred selection when ROHS3 compliance is mandated by design specifications or procurement standards. Both parts maintain identical electrical performance across frequency, tolerance, stability, and operating temperature parameters.

The ECS-196.6-S-7S-TR remains suitable for applications where RoHS compliance is not a requirement and where the 40 Ohm ESR specification is explicitly required by circuit design parameters.

Both parts are in active production status with established supply chains. The ECS-196.6-S-7SX-TR currently maintains higher inventory availability (2117 Pcs) compared to the primary part (743 Pcs).

Frequently Asked Questions (FAQ)

Q: Can ECS-196.6-S-7SX-TR be used as a direct replacement for ECS-196.6-S-7S-TR?

A: Yes, provided that ESR tolerance of 50 Ohms is acceptable for your circuit design. Both parts share identical frequency, tolerance, stability, operating temperature, and physical dimensions. The primary consideration is ESR specification and RoHS compliance status.

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

A: ESR (Equivalent Series Resistance) affects crystal oscillator performance in high-impedance circuits. The ECS-196.6-S-7S-TR specifies 40 Ohms, while the ECS-196.6-S-7SX-TR specifies 50 Ohms. Substitution is valid only when circuit design tolerates the higher ESR value.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition but does not alter electrical characteristics. The ROHS3 compliance of ECS-196.6-S-7SX-TR is a regulatory and procurement consideration, not a performance factor.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical height (0.146" / 3.70mm maximum seated height) and mounting specifications. The 4-SOJ package with 9.40mm pitch is consistent across both part numbers.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.