ECS-41-20-1 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-41-20-1 is a 4.096 MHz through-hole crystal oscillator in HC-49/U package with 20pF load capacitance and 100 Ohms equivalent series resistance. This component is classified as Not For New Designs, making identification of active equivalent parts essential for ongoing production and maintenance applications. The substitute part ECS-41-20-1X provides functional equivalence with improved product status and compliance characteristics.

Substiute Parts

ECS-41-20-1

ECS Inc.In Stock: 1927ECS-41-20-1 Datasheet

Current PartRFQ

ECS-41-20-1X

ECS Inc.In Stock: 3214ECS-41-20-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between ECS-41-20-1 and ECS-41-20-1X is based on the following critical parameters:

• Frequency: Both parts operate at 4.096 MHz
• Frequency Tolerance: Both maintain ±30ppm tolerance
• Load Capacitance: Both specify 20pF
• ESR: Both rated at 100 Ohms
• Package / Case: Both use HC-49/U form factor
• Mounting Type: Both are through-hole components
• Operating Temperature Range: Both support -10°C ~ 70°C
• Operating Mode: Both operate in fundamental mode

These parameters define the electrical and mechanical compatibility required for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The ECS-41-20-1X is the active equivalent for the ECS-41-20-1. Both parts are electrically and mechanically identical across all critical parameters. The primary distinction is product lifecycle status: ECS-41-20-1 is designated Not For New Designs, while ECS-41-20-1X maintains Active status.

For applications requiring RoHS3 compliance, ECS-41-20-1X is the appropriate selection. The ECS-41-20-1 is RoHS non-compliant and should be reserved for legacy system maintenance where compliance requirements do not apply.

Both parts share identical REACH and ECCN classifications, ensuring equivalent regulatory treatment in export and supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Can ECS-41-20-1X replace ECS-41-20-1 in existing designs?

A: Yes. Both parts maintain identical electrical specifications (4.096 MHz, ±30ppm tolerance, 20pF load capacitance, 100 Ohms ESR) and mechanical form factor (HC-49/U through-hole package). Direct substitution is supported without circuit modification.

Q: What is the difference between the HC-49U and HC-49UX series designations?

A: The series designation reflects manufacturing variants within the same HC-49/U package family. Both maintain identical external dimensions and electrical performance. The UX variant (ECS-41-20-1X) represents the current production series.

Q: Why is ECS-41-20-1 marked Not For New Designs?

A: This designation indicates the part has reached end-of-life status in the manufacturer's product portfolio. ECS-41-20-1X is the active replacement for new applications and ongoing production.

Q: Are there compliance differences between these parts?

A: ECS-41-20-1X is ROHS3 compliant, while ECS-41-20-1 is RoHS non-compliant. Both are REACH Unaffected. For applications subject to RoHS requirements, ECS-41-20-1X is the required selection.

Q: Do these parts have identical moisture sensitivity ratings?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.447" L x 0.183" W (11.35mm x 4.65mm) with maximum seated height of 0.530" (13.46mm), ensuring identical PCB footprint compatibility.