CCR20.0MXC7T Equivalent & Substitute Parts

Part Overview

The CCR20.0MXC7T is a 20 MHz ceramic resonator with built-in 9 pF capacitor manufactured by TDK Corporation. This component is designed for surface mount applications requiring precise frequency reference in the 20 MHz band. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

CCR20.0MXC7T

TDK CorporationIn Stock: 3550CCR20.0MXC7T Datasheet

Current PartRFQ

AWSCR-20.00CW-T

Abracon LLCIn Stock: 4107AWSCR-20.00CW-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CCR20.0MXC7T is determined by the following critical parameters:

• Frequency Match: 20 MHz center frequency is mandatory
• Frequency Stability: ±0.2% specification must be maintained
• Mounting Compatibility: Surface mount 3-SMD package with identical physical footprint (2.50mm × 2.00mm × 1.19mm)
• Built-in Capacitance: Internal capacitor value determines circuit resonance; variations require circuit re-evaluation
• Impedance: 40 Ohms characteristic impedance
• Temperature Range: Operating range must support application requirements

The AWSCR-20.00CW-T from Abracon LLC meets the primary frequency, stability, and physical mounting requirements. Variations in capacitance (10 pF vs. 9 pF) and impedance (60 Ohms vs. 40 Ohms) represent measurable differences that may affect circuit performance depending on application design margins.

Parameter Comparison

Engineering Selection Recommendations

The AWSCR-20.00CW-T is the identified substitute for the obsolete CCR20.0MXC7T based on matching frequency, stability, and physical package specifications. Selection between these parts depends on application-specific tolerances:

Use AWSCR-20.00CW-T when:

• Procurement of the original TDK part is unavailable
• Circuit design accommodates 10 pF capacitance (versus 9 pF)
• Circuit design accommodates 60 Ohm impedance (versus 40 Ohm)
• Operating temperature range of -25°C to 85°C is acceptable
• RoHS3 compliance is required

Verify compatibility when:

• Application requires the full -40°C to 85°C temperature range
• Circuit design has tight frequency tolerance margins
• Impedance matching is critical to circuit performance

The Abracon part carries active product status and RoHS3 compliance, providing advantages for long-term availability and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the AWSCR-20.00CW-T directly replace the CCR20.0MXC7T without circuit modification?

A: Physical footprint and frequency specifications are identical. However, the 1 pF capacitance difference and 20 Ohm impedance difference may require circuit re-evaluation depending on design margins and frequency tuning requirements.

Q: What is the impact of the capacitance difference (9 pF vs. 10 pF)?

A: Built-in capacitance affects the resonant frequency of the circuit. A 1 pF increase may shift the operating frequency slightly. Circuit designers must verify that this shift remains within acceptable tolerance for the application.

Q: What is the impact of the impedance difference (40 Ohms vs. 60 Ohms)?

A: Impedance affects signal coupling and circuit loading. Applications with impedance-sensitive designs should verify compatibility through circuit simulation or testing.

Q: Why is the operating temperature range different?

A: The CCR20.0MXC7T operates from -40°C to 85°C, while the AWSCR-20.00CW-T operates from -25°C to 85°C. Applications requiring operation below -25°C cannot use the Abracon substitute.

Q: Are both parts in the same physical package?

A: Yes. Both components use a 3-SMD, non-standard package with identical dimensions of 2.50mm × 2.00mm × 1.19mm, ensuring PCB footprint compatibility.

Q: What is the significance of the product status difference?

A: The CCR20.0MXC7T is obsolete, meaning TDK no longer manufactures or supports this part. The AWSCR-20.00CW-T is active, ensuring ongoing availability and manufacturer support.