ECS-42-12-7S-TR Equivalent & Substitute Parts

Part Overview

The ECS-42-12-7S-TR is a 4.194304 MHz crystal oscillator in a 4-SOJ surface mount package with 12pF load capacitance and 150 Ohms equivalent series resistance. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent substitute parts is necessary for maintenance, repair, and legacy system support where this specific frequency and electrical characteristics are required.

Substiute Parts

ECS-42-12-7S-TR

ECS Inc.In Stock: 2414ECS-42-12-7S-TR Datasheet

Current PartRFQ

ECS-42-12-7SX-TR

ECS Inc.In Stock: 1634ECS-42-12-7SX-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECS-42-12-7S-TR is determined by strict equivalence across the following critical parameters:

• Frequency: 4.194304 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 12pF (exact match required)
• ESR: 150 Ohms (exact match required)
• Package / Case: 4-SOJ, 9.40mm pitch (exact match required)
• Operating Temperature Range: -10°C ~ 70°C (exact match required)
• Operating Mode: Fundamental (exact match required)

The ECS-42-12-7SX-TR meets all these criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ECS-42-12-7SX-TR is a direct parametric substitute for the ECS-42-12-7S-TR. Both components share identical electrical and mechanical specifications across all critical parameters including frequency, load capacitance, ESR, package dimensions, and operating temperature range.

The primary distinction between these parts is regulatory compliance status. The ECS-42-12-7SX-TR is ROHS3 compliant, whereas the ECS-42-12-7S-TR is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the ECS-42-12-7SX-TR is the appropriate selection. Both components maintain REACH Unaffected status and identical moisture sensitivity levels.

Frequently Asked Questions (FAQ)

Q: Can the ECS-42-12-7SX-TR be used as a direct replacement for the ECS-42-12-7S-TR?

A: Yes. The ECS-42-12-7SX-TR is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters including frequency, load capacitance, ESR, and package dimensions are identical.

Q: What is the difference between these two parts?

A: The primary difference is RoHS compliance status. The ECS-42-12-7SX-TR is ROHS3 compliant, while the ECS-42-12-7S-TR is RoHS non-compliant. All other specifications are identical.

Q: Are the physical dimensions identical?

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

Q: Do these parts have the same frequency and load capacitance?

A: Yes. Both the ECS-42-12-7S-TR and ECS-42-12-7SX-TR operate at 4.194304 MHz with 12pF load capacitance and 150 Ohms ESR.

Q: What is the operating temperature range for both parts?

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

Q: Are there any moisture sensitivity differences?

A: No. Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under normal storage conditions.