250-05060 Ceramic Resonator 50 MHz Equivalent & Substitute Parts

Part Overview

The Parallax Inc. 250-05060 is a 50 MHz ceramic resonator with built-in capacitor, designed for through-hole mounting applications. This component operates across the -20°C to 80°C temperature range with ±0.2% frequency stability and ±0.5% frequency tolerance. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

250-05060

Parallax Inc.In Stock: 968250-05060 Datasheet

Current PartRFQ

CSTLS50M0X51-B0

Murata ElectronicsIn Stock: 2151CSTLS50M0X51-B0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 250-05060 is based on strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 50 MHz (exact match required)
• Frequency Stability: ±0.2% (substitute must meet this specification)
• Frequency Tolerance: ±0.5% (substitute must meet this specification)
• Component Type: Ceramic Resonator with built-in capacitor
• Mounting Type: Through Hole
• Operating Temperature Range: -20°C to 80°C minimum coverage

Mechanical Compatibility:

• Lead configuration: 3-lead radial package
• Physical dimensions must accommodate existing PCB footprints or allow mechanical rework

The Murata Electronics CSTLS50M0X51-B0 meets all mandatory electrical parameters and operates within the required temperature range. Both components share identical frequency, stability, tolerance, and built-in capacitor architecture. The substitute maintains through-hole mounting compatibility with 3-lead radial configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CSTLS50M0X51-B0 (Murata Electronics)

The CSTLS50M0X51-B0 is the direct equivalent for the obsolete 250-05060. Selection is based on:

1. Electrical Equivalence: Identical frequency (50 MHz), frequency stability (±0.2%), and frequency tolerance (±0.5%) specifications ensure functional compatibility in timing-critical applications.

2. Thermal Performance: Both components operate across -20°C to 80°C, maintaining specified stability across the full temperature range.

3. Mechanical Compatibility: Both use 3-lead radial through-hole packages. The CSTLS50M0X51-B0 specifies 2.50mm pitch, which is standard for this package class and compatible with existing 250-05060 footprints.

4. Product Status: The CSTLS50M0X51-B0 is active production status, ensuring long-term availability and supply chain stability compared to the obsolete 250-05060.

5. Compliance: The Murata part carries ROHS3 compliance and REACH affected status, meeting current regulatory requirements for new designs and manufacturing.

6. Built-in Capacitor Architecture: Both components integrate load capacitance, eliminating the need for external capacitor components and maintaining circuit simplicity.

Implementation Considerations:

• Verify PCB footprint compatibility with the 2.50mm pitch specification of the substitute part.
• Confirm that the 5 pF built-in capacitance of the CSTLS50M0X51-B0 matches the original circuit design requirements.
• No external component modifications are required due to identical built-in capacitor architecture.

Frequently Asked Questions (FAQ)

Q: Can the CSTLS50M0X51-B0 directly replace the 250-05060 without PCB modifications?

A: Direct replacement is possible if the existing PCB footprint accommodates the 2.50mm lead pitch of the CSTLS50M0X51-B0. Both components use 3-lead radial through-hole configuration. Verify footprint dimensions before assembly.

Q: Are the frequency specifications identical between these parts?

A: Yes. Both the 250-05060 and CSTLS50M0X51-B0 operate at 50 MHz with ±0.2% frequency stability and ±0.5% frequency tolerance. They are electrically equivalent for frequency-critical applications.

Q: What is the significance of the 5 pF capacitance specification in the CSTLS50M0X51-B0?

A: The 5 pF value represents the built-in load capacitance integrated into the resonator. This specification is provided for reference and circuit design verification. The original 250-05060 also includes built-in capacitance, making the parts functionally equivalent in this regard.

Q: Does the CSTLS50M0X51-B0 require external load capacitors?

A: No. Like the 250-05060, the CSTLS50M0X51-B0 includes built-in capacitance and does not require external load capacitors. This maintains the original circuit design simplicity.

Q: What is the operating temperature range for both components?

A: Both the 250-05060 and CSTLS50M0X51-B0 operate across -20°C to 80°C. Frequency stability of ±0.2% is maintained throughout this range.

Q: Is the CSTLS50M0X51-B0 suitable for new product designs?

A: Yes. The CSTLS50M0X51-B0 is active production status with ROHS3 compliance and REACH affected status, making it appropriate for new designs requiring current regulatory compliance.

Q: What is the impedance specification, and does it affect substitution?

A: The CSTLS50M0X51-B0 specifies 40 Ohms impedance. This parameter is provided for circuit design reference. Verify that the original 250-05060 circuit design accommodates this impedance value.

Q: Are there any moisture sensitivity differences between these parts?

A: The 250-05060 specifies MSL 1 (Unlimited). The CSTLS50M0X51-B0 lists MSL as Not Applicable, indicating superior moisture resistance. This represents an improvement over the original component.