CS10-12.000MABJ-UT Equivalent & Substitute Parts

Part Overview

The CS10-12.000MABJ-UT is a 12 MHz fundamental mode crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for surface mount applications with 18pF load capacitance and 70 Ohms equivalent series resistance. This part is classified as obsolete, making identification of active equivalent components necessary for ongoing production and design continuity. Substitute parts must maintain electrical compatibility across frequency, load capacitance, ESR, and operating temperature parameters while meeting current manufacturing and compliance standards.

Substiute Parts

CS10-12.000MABJ-UT

Citizen Finedevice Co LtdIn Stock: 807CS10-12.000MABJ-UT Datasheet

Current PartRFQ

ABM7-12.000MHZ-D2Y-T

Abracon LLCIn Stock: 5415ABM7-12.000MHZ-D2Y-T Datasheet

DirectRFQ

ECS-120-18-23A-EN-TR

ECS Inc.In Stock: 20942ECS-120-18-23A-EN-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS10-12.000MABJ-UT is determined by strict alignment of the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Frequency: 12 MHz
• Load Capacitance: 18pF
• Operating Mode: Fundamental
• Package / Case: 2-SMD, No Lead
• Size / Dimension: 0.236" L x 0.138" W (6.00mm x 4.60mm)

Allowable Variation Parameters:

• Frequency Tolerance: ±30ppm (substitute tolerance may be equal or tighter)
• ESR: 70 Ohms (substitute ESR may vary within acceptable circuit design margins)
• Operating Temperature Range: -10°C ~ 60°C (substitute range may be equal or broader)
• Frequency Stability: ±50ppm (substitute stability may be equal or tighter)

Both identified substitute parts meet these criteria and are classified as active products with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts satisfy the electrical and mechanical compatibility requirements for the CS10-12.000MABJ-UT. Selection between them is based on product status, compliance certifications, and operational requirements:

ABM7-12.000MHZ-D2Y-T (Abracon LLC):

• Active product status with current manufacturing availability
• Tighter frequency tolerance (±20ppm) and frequency stability (±30ppm) compared to the main part
• Lower ESR (60 Ohms) provides improved circuit performance characteristics
• Extended operating temperature range (-40°C ~ 85°C) supports broader environmental applications
• ROHS3 compliant for regulatory alignment
• Height dimension (1.40mm) is within acceptable PCB assembly tolerances

ECS-120-18-23A-EN-TR (ECS Inc.):

• Active product status with current manufacturing availability
• Frequency tolerance (±30ppm) and frequency stability (±50ppm) match the main part specifications
• ESR (80 Ohms) is within acceptable circuit design margins
• Extended operating temperature range (-40°C ~ 85°C) supports broader environmental applications
• ROHS3 compliant for regulatory alignment
• Height dimension (1.10mm) is closest to the main part specification
• REACH Unaffected status aligns with the main part classification

Frequently Asked Questions (FAQ)

Q: Can the ABM7-12.000MHZ-D2Y-T be used as a direct replacement for the CS10-12.000MABJ-UT?

A: Yes. Both parts share identical frequency (12 MHz), load capacitance (18pF), operating mode (Fundamental), package type (2-SMD, No Lead), and physical dimensions (6.00mm x 4.60mm). The ABM7 offers improved frequency tolerance and stability specifications.

Q: What is the significance of the ESR difference between the main part (70 Ohms) and the substitutes (60 Ohms and 80 Ohms)?

A: ESR affects circuit startup time and oscillation amplitude. The ABM7 (60 Ohms) provides lower resistance, potentially improving startup characteristics. The ECS part (80 Ohms) remains within acceptable design margins for most applications. Circuit validation is determined by specific oscillator circuit design requirements.

Q: Are there height dimension considerations for PCB assembly?

A: The main part has a maximum seated height of 0.039" (1.00mm). The ABM7 measures 0.055" (1.40mm) and the ECS part measures 0.043" (1.10mm). Both substitutes remain within typical PCB assembly clearance specifications. Verify clearance with specific PCB layout and component placement requirements.

Q: What is the difference between Frequency Tolerance and Frequency Stability?

A: Frequency Tolerance specifies the initial accuracy at room temperature conditions. Frequency Stability specifies the maximum frequency variation across the operating temperature range. Both parameters are provided for each part in the comparison table.

Q: Does the extended operating temperature range of the substitutes affect compatibility?

A: No. The main part operates from -10°C ~ 60°C. Both substitutes operate from -40°C ~ 85°C, which encompasses the main part's range. Extended temperature capability does not create incompatibility; it provides additional operational flexibility.

Q: What is the REACH status difference between the parts?

A: The main part and ECS substitute are REACH Unaffected. The ABM7 is REACH Affected, indicating it contains substances subject to REACH regulations. Selection depends on regulatory requirements for the end application and geographic market.

Q: Are both substitutes available in the same packaging format?

A: Yes. Both substitutes are available in Cut Tape (CT) and Digi-Reel® packaging, supporting standard component procurement and assembly workflows.