ECS-100-18-4-DN 10 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-100-18-4-DN is a 10 MHz through-hole crystal oscillator in HC-49/US package with 18pF load capacitance and 60 Ohms ESR. This part is currently Active and suitable for new designs. Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain considerations, or design flexibility requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

ECS-100-18-4-DN

ECS Inc.In Stock: 871ECS-100-18-4-DN Datasheet

Current PartRFQ

ECS-100-18-4

ECS Inc.In Stock: 2381ECS-100-18-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-100-18-4-DN is determined by the following critical parameters:

• Frequency: 10 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• ESR: 60 Ohms (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Mode: Fundamental (exact match required)

The ECS-100-18-4 meets all critical electrical and mechanical parameters for direct substitution with the ECS-100-18-4-DN.

Parameter Comparison

Engineering Selection Recommendations

The ECS-100-18-4 is electrically and mechanically compatible with the ECS-100-18-4-DN for direct substitution based on matching frequency, tolerance, load capacitance, ESR, and package specifications. However, the ECS-100-18-4 carries a "Not For New Designs" status, making it suitable only for legacy system maintenance, repair, or replacement scenarios where the original part specification must be maintained. For new design implementations, the ECS-100-18-4-DN (Active status) is the appropriate selection. Both parts share identical RoHS non-compliance status. The operating temperature range of the ECS-100-18-4 (-10°C ~ 70°C) is narrower than the ECS-100-18-4-DN (-40°C ~ 85°C), which may be a limiting factor in applications requiring extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can the ECS-100-18-4 replace the ECS-100-18-4-DN in new designs?

A: No. The ECS-100-18-4 is designated "Not For New Designs." For new applications, use the ECS-100-18-4-DN, which carries Active status.

Q: Are the electrical specifications identical between these parts?

A: The critical electrical parameters match: 10 MHz frequency, ±30ppm tolerance, 18pF load capacitance, and 60 Ohms ESR. The frequency stability differs (±100ppm vs ±50ppm), and operating temperature ranges differ (-40°C ~ 85°C vs -10°C ~ 70°C).

Q: Is the package identical for both parts?

A: Yes. Both parts use HC-49/US through-hole package with identical dimensions: 0.447" L x 0.183" W (11.35mm x 4.65mm) and 0.138" maximum seated height.

Q: What is the difference between frequency tolerance and frequency stability?

A: Frequency tolerance (±30ppm) specifies the initial accuracy at room temperature. Frequency stability (±100ppm or ±50ppm) accounts for frequency variation over the operating temperature range and time.

Q: Can I use the ECS-100-18-4 in applications requiring -40°C operation?

A: No. The ECS-100-18-4 operating range is -10°C ~ 70°C. For applications requiring -40°C operation, use the ECS-100-18-4-DN with range -40°C ~ 85°C.