ECS-100-S-7S-TR 10 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-100-S-7S-TR is a 10 MHz fundamental mode crystal oscillator in a 4-SOJ surface mount package designed for general frequency reference applications. This part carries a "Not For New Designs" status, indicating it is obsolete or being phased out. Finding equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing production requirements.

Substiute Parts

ECS-100-S-7S-TR

ECS Inc.In Stock: 836ECS-100-S-7S-TR Datasheet

Current PartRFQ

ECS-100-S-7SX-TR

ECS Inc.In Stock: 15183ECS-100-S-7SX-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-100-S-7S-TR is determined by the following critical parameters:

• Frequency: Must be 10 MHz
• Frequency Tolerance: Must be ±30ppm or tighter
• Operating Mode: Must be Fundamental
• Package / Case: Must be 4-SOJ, 9.40mm pitch
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must support -10°C ~ 70°C minimum
• Load Capacitance Type: Must be Series

The ECS-100-S-7SX-TR qualifies as a direct substitute based on these parameters. The primary difference is the ESR specification: the substitute part features 50 Ohms ESR compared to the main part's 60 Ohms ESR. This lower ESR value is electrically compatible and represents an improvement in performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ECS-100-S-7SX-TR is the qualified substitute for the ECS-100-S-7S-TR. Both parts share identical electrical specifications for frequency, tolerance, stability, and operating temperature range. The substitute part offers a lower ESR value (50 Ohms versus 60 Ohms), which provides improved performance characteristics without compromising compatibility.

The substitute part achieves ROHS3 compliance, whereas the main part is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations. Both parts maintain REACH Unaffected status and identical MSL ratings.

Both parts carry "Not For New Designs" status, indicating they are in end-of-life phases. For new design initiatives, evaluation of current-generation crystal products from ECS Inc. is recommended to ensure long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the ECS-100-S-7SX-TR be used as a direct replacement for the ECS-100-S-7S-TR?

A: Yes. Both parts meet identical frequency, tolerance, stability, and package specifications. The substitute part features lower ESR (50 Ohms versus 60 Ohms), which is electrically compatible and represents an improvement.

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

A: ESR (Equivalent Series Resistance) affects crystal oscillator performance, particularly in terms of power consumption and circuit efficiency. The lower ESR of the substitute part (50 Ohms) provides better performance characteristics compared to the main part (60 Ohms).

Q: Are there any compliance differences between these parts?

A: Yes. The ECS-100-S-7SX-TR is ROHS3 compliant, while the ECS-100-S-7S-TR is RoHS non-compliant. Both maintain REACH Unaffected status. For applications requiring RoHS compliance, the substitute part is the appropriate choice.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts use the 4-SOJ package with 9.40mm pitch, identical length (0.492" / 12.50mm), width (0.181" / 4.60mm), and maximum seated height (0.146" / 3.70mm).

Q: What does "Not For New Designs" status mean?

A: This status indicates the part is in end-of-life phase and is not recommended for new product development. Existing inventory may be available, but long-term supply cannot be guaranteed. For new designs, current-generation alternatives should be evaluated.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the same temperature range of -10°C to 70°C.