402F20011CDT MHz Crystal Equivalent & Substitute Parts

Part Overview

The 402F20011CDT is a 20 MHz fundamental mode crystal oscillator manufactured by CTS-Frequency Controls, designed for surface mount applications requiring precise frequency stability. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The crystal operates at 20 MHz with ±10ppm frequency stability and 18pF load capacitance in a compact 4-SMD, No Lead package.

Substiute Parts

402F20011CDT

CTS-Frequency ControlsIn Stock: 1101402F20011CDT Datasheet

Current PartRFQ

402F20011CDR

CTS-Frequency ControlsIn Stock: 1121402F20011CDR Datasheet

Parametric EquivalentRFQ

XYFBBCNANF-20.000000

TaitienIn Stock: 3981XYFBBCNANF-20.000000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 402F20011CDT is determined by the following critical parameters:

Primary Substitution Criteria:

• Frequency: 20 MHz (exact match required)
• Frequency Stability: ±10ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C to 70°C (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Secondary Compatibility Parameters:

• Load Capacitance: 18pF (primary specification; minor variations acceptable within circuit design tolerance)
• ESR: 100 Ohms (primary specification; minor variations acceptable within circuit design tolerance)
• Physical dimensions and height must accommodate existing PCB layouts

The 402F20011CDR qualifies as a parametric equivalent with identical electrical and mechanical specifications. The XYFBBCNANF-20.000000 qualifies as a similar substitute with minor parameter variations in load capacitance (16pF vs 18pF) and ESR (80 Ohms vs 100 Ohms).

Parameter Comparison

Engineering Selection Recommendations

402F20011CDR (Parametric Equivalent - Preferred): The 402F20011CDR is the direct parametric equivalent to the 402F20011CDT. Both parts share identical electrical specifications (20 MHz, ±10ppm stability, 18pF load capacitance, 100 Ohms ESR) and mechanical dimensions. The primary difference is product status: the 402F20011CDR is currently active, while the main part is discontinued. Both parts maintain ROHS3 compliance and MSL 1 rating. The 402F20011CDR is available in Tape & Reel packaging, suitable for production environments.

XYFBBCNANF-20.000000 (Similar Substitute - Alternative): The XYFBBCNANF-20.000000 from Taitien maintains the same 20 MHz frequency, ±10ppm stability, and fundamental operating mode across the -20°C to 70°C temperature range. This part differs in load capacitance (16pF vs 18pF) and ESR (80 Ohms vs 100 Ohms). The physical footprint is slightly larger (0.100" L x 0.081" W vs 0.079" L x 0.063" W), requiring PCB layout verification. This part is active and available in Tape & Reel packaging with ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can the 402F20011CDR directly replace the 402F20011CDT? A: Yes. The 402F20011CDR is a parametric equivalent with identical electrical and mechanical specifications. The only difference is product status and packaging format. Both parts are electrically and mechanically interchangeable.

Q: What are the differences between the 402F20011CDT and XYFBBCNANF-20.000000? A: Both parts operate at 20 MHz with ±10ppm stability and identical temperature range. The XYFBBCNANF-20.000000 has lower load capacitance (16pF vs 18pF) and lower ESR (80 Ohms vs 100 Ohms). The physical footprint is also larger. These differences may require circuit tuning adjustments and PCB layout verification.

Q: Does the load capacitance difference affect circuit performance? A: Load capacitance is a critical parameter for crystal oscillator circuit design. The 2pF difference between 18pF and 16pF, combined with the ESR difference, may require oscillator circuit adjustments. Circuit validation is necessary when substituting with the XYFBBCNANF-20.000000.

Q: Are all substitute parts RoHS compliant? A: Yes. Both the 402F20011CDR and XYFBBCNANF-20.000000 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference between bulk and Tape & Reel packaging? A: The 402F20011CDT is supplied in bulk packaging, while the 402F20011CDR and XYFBBCNANF-20.000000 are supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly and production environments.

Q: Can I use the XYFBBCNANF-20.000000 without circuit modifications? A: The XYFBBCNANF-20.000000 has different load capacitance and ESR specifications. PCB layout verification is required due to the larger physical footprint. Circuit validation is necessary to confirm oscillator performance with the modified crystal parameters.