CS20-10.000MABJ-UT Equivalent & Substitute Parts

Part Overview

The CS20-10.000MABJ-UT is a 10 MHz fundamental mode crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for surface mount applications requiring precise frequency control. This component features 18pF load capacitance, 80 Ohms equivalent series resistance (ESR), and operates across the -10°C to 60°C temperature range in a compact 4-SMD, No Lead package.

The CS20-10.000MABJ-UT is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this crystal specification.

Substiute Parts

CS20-10.000MABJ-UT

Citizen Finedevice Co LtdIn Stock: 750CS20-10.000MABJ-UT Datasheet

Current PartRFQ

ABC2-10.000MHZ-4-T

Abracon LLCIn Stock: 1000122ABC2-10.000MHZ-4-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS20-10.000MABJ-UT is determined by strict alignment of the following critical parameters:

• Frequency: 10 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Load Capacitance: 18pF (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -10°C to 60°C (minimum coverage required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Mounting Type: Surface Mount (exact match required)

The ABC2-10.000MHZ-4-T satisfies all substitution criteria. While the ESR specification differs (45 Ohms versus 80 Ohms), this parameter remains within acceptable operating margins for equivalent crystal functionality in standard oscillator circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The ABC2-10.000MHZ-4-T is a qualified substitute for the obsolete CS20-10.000MABJ-UT. The substitute part is manufactured by Abracon LLC and maintains active product status, ensuring ongoing availability and supply chain reliability.

Both parts share identical frequency specifications (10 MHz), frequency tolerance (±30ppm), load capacitance (18pF), operating mode (Fundamental), temperature range (-10°C to 60°C), and package configuration (4-SMD, No Lead). The ABC2-10.000MHZ-4-T exhibits superior frequency stability (±30ppm versus ±50ppm) and lower ESR (45 Ohms versus 80 Ohms), characteristics that enhance circuit performance.

The ABC2-10.000MHZ-4-T is ROHS3 compliant and REACH affected, compared to the main part's REACH unaffected status. Both components carry identical ECCN (EAR99) and HTSUS (8541.60.0050) classifications. Physical dimensions are comparable, with the substitute part measuring marginally larger in length (11.80mm versus 11.60mm) and lower in seated height (2.00mm versus 2.20mm).

Frequently Asked Questions (FAQ)

Q: Can the ABC2-10.000MHZ-4-T directly replace the CS20-10.000MABJ-UT without circuit modification?

A: Yes. Both parts meet identical frequency, load capacitance, operating mode, temperature range, and package specifications. The substitute part's lower ESR and improved frequency stability present no compatibility issues in standard oscillator circuit designs.

Q: What is the significance of the ESR difference between these parts?

A: The CS20-10.000MABJ-UT specifies 80 Ohms ESR, while the ABC2-10.000MHZ-4-T specifies 45 Ohms ESR. Lower ESR reduces power consumption and improves frequency stability. This difference does not prevent direct substitution in applications designed for the original part.

Q: Are there physical mounting considerations when switching to the ABC2-10.000MHZ-4-T?

A: Both parts use identical 4-SMD, No Lead surface mount packages. The ABC2-10.000MHZ-4-T is marginally larger in length (11.80mm versus 11.60mm) and lower in height (2.00mm versus 2.20mm). These dimensional variations remain within standard PCB layout tolerances for surface mount crystal oscillators.

Q: What is the impact of REACH compliance status on part selection?

A: The CS20-10.000MABJ-UT is REACH unaffected, while the ABC2-10.000MHZ-4-T is REACH affected. REACH affected status indicates the part contains substances of very high concern (SVHC) requiring compliance documentation. Selection depends on regulatory requirements applicable to the end application and geographic market.

Q: Why is the CS20-10.000MABJ-UT classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ABC2-10.000MHZ-4-T maintains active product status, ensuring continued availability, technical support, and supply chain reliability for new designs and ongoing production.