7A12070002 Crystal 12.0000MHz 18pF SMD Equivalent & Substitute Parts

Part Overview

The 7A12070002 is a 12 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION in a 2-SMD, no-lead surface mount package. This component operates at 12.0000 MHz with ±30ppm frequency stability and 18pF load capacitance. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical frequency, frequency stability, load capacitance, operating temperature range, and physical package dimensions to ensure direct compatibility in existing circuit designs.

Substiute Parts

7A12070002

TXC CORPORATIONIn Stock: 10257A12070002 Datasheet

Current PartRFQ

445C33B12M00000

CTS-Frequency ControlsIn Stock: 824445C33B12M00000 Datasheet

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445C33C12M00000

CTS-Frequency ControlsIn Stock: 853445C33C12M00000 Datasheet

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445C33D12M00000

CTS-Frequency ControlsIn Stock: 841445C33D12M00000 Datasheet

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445C33E12M00000

CTS-Frequency ControlsIn Stock: 1105445C33E12M00000 Datasheet

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ABM3-12.000MHZ-B4Y-T

Abracon LLCIn Stock: 777ABM3-12.000MHZ-B4Y-T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7A12070002 is determined by strict adherence to the following critical parameters:

Primary Matching Criteria (Non-Negotiable):

• Frequency: 12 MHz
• Frequency Stability: ±30ppm
• Load Capacitance: 18pF
• Operating Temperature Range: -20°C ~ 70°C
• Package / Case: 2-SMD, No Lead
• Physical Dimensions: 0.197" L x 0.126" W (5.00mm x 3.20mm)
• Operating Mode: Fundamental

Secondary Compatibility Parameters:

• ESR (Equivalent Series Resistance): Acceptable range 50-80 Ohms
• Height - Seated (Max): Acceptable range 1.30mm - 1.35mm
• RoHS Compliance: Required
• Moisture Sensitivity Level: MSL 1 acceptable

Substitute parts are grouped based on exact frequency and load capacitance matching. Parts with identical 18pF load capacitance are direct functional equivalents. Parts with alternative load capacitance values (13pF, 16pF, 20pF) are listed as secondary alternatives only when circuit design permits load capacitance variation.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

445C33D12M00000 (CTS-Frequency Controls) is the primary recommended substitute for 7A12070002. This part maintains identical frequency (12 MHz), frequency stability (±30ppm), load capacitance (18pF), operating temperature range (-20°C ~ 70°C), and physical package dimensions (5.00mm x 3.20mm). The part is currently in active production status with 810 pcs in stock inventory. ROHS3 compliance and MSL 1 rating ensure environmental and handling compatibility. ESR of 50 Ohms is within acceptable operational range for 12 MHz crystal circuits designed for the original 80 Ohm specification.

Secondary Equivalent (Alternative Substitute):

ABM3-12.000MHZ-B4Y-T (Abracon LLC) provides functional equivalence with identical frequency, frequency stability, load capacitance, and operating temperature range. Physical dimensions and height are compatible within manufacturing tolerances (height 1.30mm vs. 1.35mm maximum). ESR of 60 Ohms falls within acceptable range. Part is in active production with 708 pcs in stock. ROHS3 compliance is confirmed. MSL rating is not applicable for this Abracon product line.

Alternative Load Capacitance Options:

445C33B12M00000 (13pF load capacitance), 445C33C12M00000 (16pF load capacitance), and 445C33E12M00000 (20pF load capacitance) are available from CTS-Frequency Controls with identical frequency and frequency stability. These alternatives are suitable only when circuit design specifications permit load capacitance variation from the original 18pF requirement. All three parts are in active production status with confirmed ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can 445C33D12M00000 be used as a direct replacement for 7A12070002 without circuit modification?

A: Yes. 445C33D12M00000 maintains all critical electrical parameters: 12 MHz frequency, ±30ppm stability, 18pF load capacitance, and -20°C ~ 70°C operating temperature range. Physical package dimensions are identical (5.00mm x 3.20mm). ESR difference (50 Ohms vs. 80 Ohms) is within acceptable tolerance for 12 MHz crystal oscillator circuits. No circuit modification is required.

Q: What is the difference between the CTS 445C33D12M00000 and Abracon ABM3-12.000MHZ-B4Y-T?

A: Both parts are functionally equivalent with identical frequency, frequency stability, load capacitance, and operating temperature range. Primary differences are: ESR (50 Ohms vs. 60 Ohms), height (1.35mm vs. 1.30mm), and MSL rating (MSL 1 vs. Not Applicable). Both are in active production and ROHS3 compliant. Selection depends on circuit ESR requirements and PCB assembly height constraints.

Q: Can I use 445C33E12M00000 (20pF load capacitance) instead of the original 18pF specification?

A: 445C33E12M00000 is suitable only if circuit design specifications explicitly permit load capacitance variation from 18pF to 20pF. Load capacitance affects crystal frequency calibration and oscillator startup characteristics. Verify circuit design documentation before substitution. If original design requires 18pF, use 445C33D12M00000 instead.

Q: What is the inventory status of substitute parts?

A: 445C33D12M00000 has 810 pcs in stock. ABM3-12.000MHZ-B4Y-T has 708 pcs in stock. Alternative load capacitance options: 445C33B12M00000 (768 pcs), 445C33C12M00000 (843 pcs), 445C33E12M00000 (1033 pcs). All parts are new original stock.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant. The original 7A12070002 is RoHS compliant. Environmental and regulatory requirements are maintained across all substitute options.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. Both 7A12070002 and primary CTS substitutes carry MSL 1 rating, ensuring equivalent handling and storage conditions. Abracon ABM3-12.000MHZ-B4Y-T has MSL not applicable, indicating no moisture sensitivity restrictions.