ECS-160-20-4 16 MHz Crystal Equivalent & Substitute Parts

Part Overview

The ECS-160-20-4 is a 16 MHz through-hole crystal oscillator in HC-49/US package with 20pF load capacitance and 40 Ohms ESR. This part is classified as "Not For New Designs," indicating it is legacy or obsolete. Finding equivalent and substitute parts is necessary for maintenance, repair, and legacy system support where original components are unavailable or inventory is depleted.

Substiute Parts

ECS-160-20-4

ECS Inc.In Stock: 2415ECS-160-20-4 Datasheet

Current PartRFQ

ECS-160-20-4DN

ECS Inc.In Stock: 2484ECS-160-20-4DN Datasheet

SimilarRFQ

ECS-160-20-4VX

ECS Inc.In Stock: 1014ECS-160-20-4VX Datasheet

SimilarRFQ

ECS-160-20-4X

ECS Inc.In Stock: 834ECS-160-20-4X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-160-20-4 is determined by the following critical parameters:

• Frequency: Must be 16 MHz (exact match required)
• Frequency Tolerance: Must be ±30ppm or tighter
• Load Capacitance: Must be 20pF (exact match required)
• Package / Case: Must be HC-49/US (mechanical and electrical compatibility)
• Mounting Type: Must be Through Hole (PCB design compatibility)
• Operating Mode: Must be Fundamental (circuit design requirement)

Substitute parts are grouped into two categories:

1. Direct Substitutes: Parts with identical or compatible ESR and operating temperature range
2. Parametric Equivalents: Parts with matching core electrical parameters but different secondary characteristics (ESR, temperature range, or compliance status)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ECS-160-20-4X

The ECS-160-20-4X is the preferred substitute for the ECS-160-20-4. It provides identical electrical parameters (16 MHz, ±30ppm tolerance, 20pF load capacitance, 40 Ohms ESR) with the same operating temperature range (-10°C ~ 70°C). The ECS-160-20-4X is classified as Active product status and is ROHS3 compliant, making it suitable for new designs and long-term availability.

Secondary Option: ECS-160-20-4DN

The ECS-160-20-4DN matches all core electrical parameters but extends the operating temperature range to -40°C ~ 85°C. This part is suitable only if the application requires the expanded temperature range. However, it retains legacy product status and RoHS non-compliance.

Alternative with ESR Variation: ECS-160-20-4VX

The ECS-160-20-4VX is an active, ROHS3-compliant alternative with a 50 Ohms ESR (compared to 40 Ohms in the main part). This 10 Ohms increase in ESR may affect circuit performance in sensitive applications. Use only if ESR tolerance in the circuit design permits the variation. This part is recommended for new designs requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can I use ECS-160-20-4X as a direct replacement for ECS-160-20-4?

A: Yes. The ECS-160-20-4X is electrically and mechanically identical to the ECS-160-20-4 across all critical parameters: frequency, tolerance, load capacitance, ESR, and operating temperature range. The primary difference is product status (Active vs. Not For New Designs) and RoHS compliance.

Q: What is the difference between ECS-160-20-4DN and ECS-160-20-4?

A: The ECS-160-20-4DN has an extended operating temperature range (-40°C ~ 85°C versus -10°C ~ 70°C). All other electrical parameters are identical. Use ECS-160-20-4DN only if your application requires operation below -10°C or above 70°C.

Q: Can I use ECS-160-20-4VX instead of ECS-160-20-4?

A: ECS-160-20-4VX is mechanically compatible but has a 50 Ohms ESR instead of 40 Ohms. This 25% increase in ESR may affect circuit startup time, frequency accuracy, or power consumption. Verify that your circuit design tolerates this ESR variation before substitution.

Q: Why is ECS-160-20-4 marked "Not For New Designs"?

A: This designation indicates the part is legacy or obsolete. ECS-160-20-4X is the recommended active replacement for new designs.

Q: Are all substitute parts in HC-49/US package?

A: Yes. All listed substitutes use the HC-49/US package, ensuring mechanical and electrical compatibility with existing PCB designs.

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

A: Frequency tolerance (±30ppm) specifies the initial accuracy at room temperature. Frequency stability (±50ppm or ±100ppm) specifies the maximum frequency drift over the operating temperature range. All listed parts meet the ±30ppm tolerance requirement.