AT-24.576MAGK-T Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The AT-24.576MAGK-T is a 24.576 MHz crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in the HC-49/US package. This component operates at a fundamental frequency with ±30ppm tolerance and 20pF load capacitance, making it suitable for timing and synchronization applications requiring precise frequency control.

The AT-24.576MAGK-T is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this crystal frequency and package specification.

Substiute Parts

AT-24.576MAGK-T

TXC CORPORATIONIn Stock: 890AT-24.576MAGK-T Datasheet

Current PartRFQ

AT-24.576MAGK-T

FTSIn Stock: 1912AT-24.576MAGK-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT-24.576MAGK-T is determined by strict equivalence across all critical electrical and mechanical parameters. A valid substitute must satisfy the following conditions:

Mandatory Matching Parameters:

• Frequency: 24.576 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Load Capacitance: 20pF (exact match required)
• ESR: 50 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match or wider range acceptable)
• Physical Dimensions: 11.40 x 4.80 mm (exact match required)
• Height - Seated (Max): 4.10 mm (exact match required)

Compliance Parameters:

• RoHS Status: Compliant (required for regulatory alignment)
• Moisture Sensitivity Level: 1 (Unlimited) (required for handling compatibility)
• AEC-Q200 Rating: Required for automotive-grade applications

Parts meeting all mandatory parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The FTS AT-24.576MAGK-T represents a parametric equivalent substitute for the obsolete TXC CORPORATION AT-24.576MAGK-T. All critical electrical parameters, mechanical dimensions, and compliance certifications are identical between the two parts.

Selection Basis:

1. Electrical Equivalence: The substitute part matches all frequency, tolerance, stability, load capacitance, and ESR specifications. Circuit-level performance is equivalent.

2. Mechanical Compatibility: Package type, mounting method, physical dimensions, and height specifications are identical, ensuring direct PCB footprint compatibility without layout modifications.

3. Compliance Alignment: Both parts maintain RoHS compliance, MSL Level 1 (Unlimited) moisture sensitivity rating, and AEC-Q200 automotive qualification. Regulatory and environmental requirements are satisfied.

4. Supply Continuity: The FTS substitute is classified as Active product status with 1901 pieces in stock, providing immediate availability compared to the obsolete TXC part (804 pieces, no future supply).

5. Packaging: The FTS substitute is supplied in standard Tape & Reel (TR) packaging, suitable for automated assembly processes.

The FTS AT-24.576MAGK-T is a direct functional and physical replacement requiring no circuit redesign, PCB modification, or application firmware adjustment.

Frequently Asked Questions (FAQ)

Q: Can the FTS AT-24.576MAGK-T be used as a direct replacement for the TXC AT-24.576MAGK-T without circuit modifications?

A: Yes. All electrical parameters (frequency, tolerance, stability, load capacitance, ESR) and mechanical specifications (package, dimensions, height) are identical. No circuit redesign is required.

Q: Are there any differences in operating temperature performance between the two parts?

A: No. Both parts operate across the identical temperature range of -40°C to 85°C with the same frequency stability specification of ±50ppm.

Q: Does the FTS substitute maintain the same AEC-Q200 automotive qualification?

A: Yes. The FTS part carries the same AEC-Q200 rating, ensuring equivalent automotive-grade reliability and qualification status.

Q: What is the significance of the different product status (Obsolete vs. Active)?

A: The TXC part is obsolete and no longer manufactured, with limited remaining inventory. The FTS substitute is actively produced and stocked (1901 pieces available), ensuring long-term supply chain continuity for new production and field replacements.

Q: Are the moisture sensitivity and RoHS compliance specifications identical?

A: Yes. Both parts are RoHS Compliant and carry MSL Level 1 (Unlimited) rating, indicating identical handling, storage, and environmental compliance requirements.

Q: Does the packaging format affect electrical performance?

A: No. The FTS substitute is supplied in Tape & Reel (TR) packaging, which is a standard format for automated assembly. Electrical and mechanical performance is independent of packaging format.

Q: Can the FTS part be used in existing designs without PCB layout changes?

A: Yes. Identical physical dimensions (11.40 x 4.80 mm) and maximum seated height (4.10 mm) ensure the FTS part fits existing PCB footprints without modification.