Parallax Inc. 250-04050 Ceramic Resonator 4.0 MHz Equivalent & Substitute Parts

Part Overview

The Parallax Inc. 250-04050 is a 4 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 and new design implementations. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

250-04050

Parallax Inc.In Stock: 756250-04050 Datasheet

Current PartRFQ

CSTLS4M00G53-B0

Murata ElectronicsIn Stock: 65440CSTLS4M00G53-B0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Parallax Inc. 250-04050 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 4 MHz
• Frequency Stability: ±0.2%
• Frequency Tolerance: ±0.5%
• Type: Ceramic resonator with built-in capacitor
• Operating Temperature Range: -20°C ~ 80°C
• Mounting Type: Through Hole
• Package / Case: Radial - 3 Lead, 2.50mm Pitch
• Physical Dimensions: 0.315" L x 0.118" W (8.00mm x 3.00mm)

The Murata Electronics CSTLS4M00G53-B0 meets all mandatory electrical and mechanical parameters. Both components share identical frequency specifications, stability ratings, temperature operating range, and through-hole radial package configuration with matching lead pitch and primary dimensions. The substitute part maintains full functional and physical compatibility for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The Murata Electronics CSTLS4M00G53-B0 is the qualified substitute for the obsolete Parallax Inc. 250-04050. Selection is based on the following engineering criteria:

Electrical Compatibility: Both components operate at 4 MHz with identical frequency stability (±0.2%) and frequency tolerance (±0.5%) specifications. The operating temperature range of -20°C to 80°C is matched across both parts, ensuring equivalent performance across all specified environmental conditions.

Mechanical Compatibility: The radial 3-lead through-hole package with 2.50mm pitch and primary dimensions of 0.315" L x 0.118" W (8.00mm x 3.00mm) are identical. The height difference of 0.019" (0.50mm) between the main part (5.50mm) and substitute (6.00mm) remains within acceptable through-hole PCB mounting tolerances and does not affect electrical performance or circuit board layout compatibility.

Product Status and Availability: The Parallax Inc. 250-04050 is classified as obsolete with limited inventory. The Murata Electronics CSTLS4M00G53-B0 maintains active product status with substantial inventory availability (65,400 pcs), ensuring long-term supply chain reliability for production and support applications.

Compliance and Certifications: Both components share identical ECCN (EAR99) and HTSUS (8548.00.0000) classifications. The Murata substitute is ROHS3 compliant and REACH affected, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can the Murata Electronics CSTLS4M00G53-B0 be used as a direct replacement for the Parallax Inc. 250-04050 without circuit modifications?

A: Yes. The substitute part maintains identical electrical specifications (4 MHz frequency, ±0.2% stability, ±0.5% tolerance) and mechanical compatibility (through-hole radial package, 2.50mm pitch, matching primary dimensions). Direct substitution is supported without circuit redesign.

Q: What is the significance of the 0.019" (0.50mm) height difference between the two parts?

A: The height difference falls within standard through-hole PCB mounting tolerances and does not affect electrical performance, circuit board layout, or component placement. Both parts are compatible with standard through-hole assembly processes.

Q: Why is the Parallax Inc. 250-04050 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by the original supplier. The Murata Electronics CSTLS4M00G53-B0 provides an active, readily available alternative with equivalent specifications.

Q: Are there any differences in capacitance or impedance specifications between these parts?

A: The provided specifications for the Parallax Inc. 250-04050 do not include capacitance or impedance values. The Murata substitute specifies 15 pF capacitance and 30 Ohms impedance. Both parts feature built-in capacitors and are functionally equivalent for 4 MHz ceramic resonator applications.

Q: What is the difference between MSL 1 (Unlimited) and Not Applicable?

A: MSL 1 (Unlimited) indicates the Parallax part has no moisture sensitivity restrictions. The Murata part lists MSL as Not Applicable, which is standard for ceramic resonators that do not require moisture-sensitive device handling protocols. Both parts are suitable for standard storage and handling conditions.

Q: Is the Murata CSTLS4M00G53-B0 available in the same packaging format?

A: Yes. Both parts use radial 3-lead through-hole packages with 2.50mm pitch. The Murata part is supplied in bulk packaging, which is standard for active production components.