ECS-240-S-1 Crystal Equivalent & Substitute Parts

Part Overview

The ECS-240-S-1 is a 24 MHz through-hole crystal oscillator in HC-49/U package configuration, designed for fundamental mode operation across industrial temperature ranges. This part carries a "Not For New Designs" status, making identification of active equivalent alternatives essential for ongoing production and maintenance applications. The primary substitute ECS-240-S-1X provides functional equivalence while maintaining current product lifecycle status.

Substiute Parts

ECS-240-S-1

ECS Inc.In Stock: 17687ECS-240-S-1 Datasheet

Current PartRFQ

ECS-240-S-1X

ECS Inc.In Stock: 915ECS-240-S-1X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between ECS-240-S-1 and ECS-240-S-1X is determined by strict equivalence across the following critical parameters:

• Frequency: 24 MHz (exact match)
• Frequency Tolerance: ±30ppm (exact match)
• Frequency Stability: ±50ppm (exact match)
• ESR: 20 Ohms (exact match)
• Load Capacitance: Series (exact match)
• Operating Mode: Fundamental (exact match)
• Operating Temperature Range: -10°C ~ 70°C (exact match)
• Package / Case: HC-49/U (exact match)
• Mounting Type: Through Hole (exact match)
• Physical Dimensions: 0.447" L x 0.183" W, Height 0.530" max (exact match)
• MSL Rating: 1 (Unlimited) (exact match)

Both parts maintain identical electrical and mechanical specifications, enabling direct substitution in circuit applications where these parameters are specified.

Parameter Comparison

Engineering Selection Recommendations

The ECS-240-S-1X serves as the direct functional equivalent to ECS-240-S-1, with identical electrical and mechanical specifications across all critical parameters. The primary distinction lies in product lifecycle status: ECS-240-S-1X maintains Active status, while ECS-240-S-1 is designated Not For New Designs.

For applications requiring RoHS3 compliance, ECS-240-S-1X is the appropriate selection. Both parts are REACH Unaffected and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can ECS-240-S-1X directly replace ECS-240-S-1 in existing designs?

A: Yes. Both parts share identical frequency (24 MHz), tolerance (±30ppm), stability (±50ppm), ESR (20 Ohms), operating temperature range (-10°C ~ 70°C), and HC-49/U package configuration. No circuit modifications are required.

Q: What is the difference between ECS-240-S-1 and ECS-240-S-1X?

A: The parts are electrically and mechanically equivalent. ECS-240-S-1X is the current production variant (Active status) with ROHS3 compliance, while ECS-240-S-1 is designated Not For New Designs and is RoHS non-compliant.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.447" L x 0.183" W (11.35mm x 4.65mm) with a maximum seated height of 0.530" (13.46mm). They are pin-compatible and footprint-compatible for through-hole PCB mounting.

Q: What is the MSL rating for these crystals?

A: Both ECS-240-S-1 and ECS-240-S-1X carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Which part should be specified for new production?

A: ECS-240-S-1X should be specified for new designs and ongoing production due to its Active product status and ROHS3 compliance.