ECS-80-18-4DN 8 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-80-18-4DN is an 8 MHz through-hole crystal oscillator in HC-49/US package with 18pF load capacitance and 80 Ohms equivalent series resistance. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this frequency and package configuration remain required.

Substiute Parts

ECS-80-18-4DN

ECS Inc.In Stock: 3078ECS-80-18-4DN Datasheet

Current PartRFQ

ECS-80-18-4

ECS Inc.In Stock: 1869ECS-80-18-4 Datasheet

SimilarRFQ

ECS-80-18-4XDN

ECS Inc.In Stock: 1945ECS-80-18-4XDN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-80-18-4DN is determined by strict alignment of the following parameters:

• Frequency: 8 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• ESR: 80 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)

Two substitute parts meet these criteria. The ECS-80-18-4XDN provides parametric equivalence with identical electrical specifications and an extended operating temperature range. The ECS-80-18-4 provides functional equivalence with identical electrical specifications but operates within a narrower temperature range.

Parameter Comparison

Engineering Selection Recommendations

The ECS-80-18-4XDN is the primary substitute for the ECS-80-18-4DN. Both parts share identical electrical specifications and operating temperature range. The ECS-80-18-4XDN holds Active product status and meets ROHS3 compliance, making it suitable for new production and long-term availability. The ECS-80-18-4DN is classified as Not For New Designs, indicating limited future availability.

The ECS-80-18-4 provides functional equivalence with identical frequency, tolerance, load capacitance, and ESR specifications. However, its operating temperature range is restricted to -10°C ~ 70°C compared to the -40°C ~ 85°C range of the main part. Selection of this substitute requires verification that the narrower temperature range meets application requirements. The ECS-80-18-4 also carries Not For New Designs status.

For applications requiring compliance with current environmental standards, the ECS-80-18-4XDN is the recommended choice due to its ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can the ECS-80-18-4XDN directly replace the ECS-80-18-4DN in existing designs?

A: Yes. Both parts share identical electrical specifications (8 MHz, ±30ppm tolerance, 18pF load capacitance, 80 Ohms ESR) and operate across the same temperature range (-40°C ~ 85°C). The HC-49/US package and through-hole mounting are identical. Direct substitution is supported at the component level.

Q: What is the difference between the ECS-80-18-4 and ECS-80-18-4XDN?

A: The primary difference is operating temperature range. The ECS-80-18-4 operates from -10°C ~ 70°C, while the ECS-80-18-4XDN operates from -40°C ~ 85°C. All other electrical parameters are identical. Selection depends on whether your application requires the extended low-temperature performance of the ECS-80-18-4XDN.

Q: Why is the ECS-80-18-4DN marked as "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for legacy system support and maintenance. For new designs, the ECS-80-18-4XDN is the recommended alternative.

Q: Are there RoHS compliance differences between these parts?

A: Yes. The ECS-80-18-4XDN is ROHS3 compliant, while both the ECS-80-18-4DN and ECS-80-18-4 are RoHS non-compliant. If your application or market requires RoHS compliance, the ECS-80-18-4XDN is the only suitable option among these three parts.

Q: Can I use the ECS-80-18-4 in an application requiring -40°C operation?

A: No. The ECS-80-18-4 is rated only to -10°C minimum. Applications requiring operation at -40°C must use the ECS-80-18-4DN or ECS-80-18-4XDN, both of which support the full -40°C ~ 85°C range.