AT-12.288MAGE-T Equivalent & Substitute Parts

Part Overview

The AT-12.288MAGE-T is a 12.288 MHz crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in HC-49/US package format. This component operates at a fundamental frequency with 12pF load capacitance and 60 Ohms equivalent series resistance (ESR). The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Substiute Parts

AT-12.288MAGE-T

TXC CORPORATIONIn Stock: 919AT-12.288MAGE-T Datasheet

Current PartRFQ

AT-12.288MAGE-T

FTSIn Stock: 3179AT-12.288MAGE-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT-12.288MAGE-T is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Frequency: 12.288 MHz (exact match required)
• Frequency Tolerance: ±30 ppm (defines accuracy class)
• Load Capacitance: 12 pF (circuit design requirement)
• Package / Case: HC-49/US (physical and electrical interface)
• Mounting Type: Surface Mount (assembly process compatibility)
• Operating Mode: Fundamental (frequency generation method)
• Operating Temperature Range: -40°C to 85°C (environmental specification)

Acceptable Variation Parameters:

• ESR (Equivalent Series Resistance): Tolerance range 60–70 Ohms (minor variation acceptable within oscillator design margins)
• Product Status: Active substitutes preferred for obsolete parts
• Packaging Format: Tape & Reel acceptable as alternative to standard packaging

Substitute parts must satisfy all critical matching parameters. Variations in ESR within the specified range do not compromise circuit functionality when the oscillator design accommodates the tolerance band.

Parameter Comparison

Engineering Selection Recommendations

The FTS AT-12.288MAGE-T variant qualifies as a direct parametric equivalent to the TXC CORPORATION AT-12.288MAGE-T based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters match exactly: frequency (12.288 MHz), frequency tolerance (±30 ppm), load capacitance (12 pF), and operating temperature range (-40°C to 85°C). The ESR variation from 60 Ohms to 70 Ohms falls within acceptable oscillator design margins and does not compromise circuit performance.

Mechanical Compatibility: Physical dimensions, package format (HC-49/US), and mounting type (surface mount) are identical, ensuring direct PCB assembly compatibility without layout or footprint modifications.

Compliance and Certification: Both variants carry AEC-Q200 automotive qualification and RoHS compliance certification, satisfying regulatory and quality requirements for automotive and industrial applications.

Product Status Advantage: The FTS variant maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete TXC CORPORATION original.

Frequently Asked Questions (FAQ)

Q: Can the FTS AT-12.288MAGE-T directly replace the TXC CORPORATION AT-12.288MAGE-T without circuit modifications?

A: Yes. The FTS variant matches all critical electrical and mechanical parameters. The 10 Ohm ESR difference (60 Ohms to 70 Ohms) is within standard oscillator design tolerance and requires no circuit changes.

Q: What is the significance of the ±30 ppm frequency tolerance specification?

A: Frequency tolerance defines the maximum allowable deviation from the nominal 12.288 MHz frequency across the operating temperature range and component lifetime. Both variants specify ±30 ppm, ensuring equivalent accuracy performance in the application circuit.

Q: Does the packaging format difference (standard vs. Tape & Reel) affect electrical performance?

A: No. Tape & Reel packaging is a supply and assembly format variation only. The component itself and its electrical characteristics remain identical. Tape & Reel format is standard for high-volume surface mount assembly.

Q: Are both variants suitable for automotive applications?

A: Yes. Both the TXC CORPORATION and FTS variants carry AEC-Q200 automotive qualification, confirming suitability for automotive-grade applications.

Q: What does the 12 pF load capacitance specification mean for circuit design?

A: Load capacitance specifies the external capacitive load the oscillator circuit must present for the crystal to operate at the specified frequency and tolerance. The oscillator design must be configured for 12 pF load capacitance; both variants are rated for this value.

Q: Is the FTS variant RoHS compliant?

A: Yes. The FTS AT-12.288MAGE-T is RoHS compliant, meeting environmental and regulatory requirements equivalent to the original TXC CORPORATION part.