14.7456 MHz Crystal 16pF SMD (9C14700004) Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 9C14700004 is a 14.7456 MHz surface mount crystal oscillator with 16pF load capacitance and 30 Ohms equivalent series resistance (ESR), housed in HC-49/US package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The crystal operates across the industrial temperature range of -40°C to 85°C and complies with RoHS3 and REACH regulations.

Substiute Parts

9C14700004

TXC CORPORATIONIn Stock: 7799C14700004 Datasheet

Current PartRFQ

ECS-147.4-20-3X-EN-TR

ECS Inc.In Stock: 2317ECS-147.4-20-3X-EN-TR Datasheet

SimilarRFQ

LP147F35IDT

CTS-Frequency ControlsIn Stock: 1083LP147F35IDT Datasheet

SimilarRFQ

LP147F35IET

CTS-Frequency ControlsIn Stock: 930LP147F35IET Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9C14700004 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Frequency: 14.7456 MHz (exact match required)
• Frequency Tolerance: ±30 ppm (exact match required)
• Frequency Stability: ±50 ppm (exact match required)
• Package / Case: HC-49/US (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Mounting Type: Surface Mount (exact match required)
• RoHS3 Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Load Capacitance: 16pF to 20pF (circuit-dependent; requires verification in application schematic)
• ESR: 30 Ohms to 60 Ohms (circuit-dependent; requires verification in application schematic)
• Physical Dimensions: Variation permitted within HC-49/US envelope
• Product Status: Active preferred over obsolete for long-term availability

All three substitute parts meet the critical matching parameters. Load capacitance and ESR variations are permissible only when the circuit design accommodates these ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

All three substitute parts are classified as Active products, providing superior long-term availability compared to the obsolete 9C14700004. Selection among the three substitutes depends on circuit-specific load capacitance and ESR requirements:

ECS-147.4-20-3X-EN-TR (ECS Inc.):

• Load Capacitance: 20 pF (highest among substitutes)
• ESR: 60 Ohms (highest among substitutes)
• Suitable for circuits designed for 20 pF load capacitance
• Smallest physical dimensions (7.00mm L x 4.10mm W x 2.30mm H)
• Highest inventory availability (2257 Pcs)

LP147F35IDT (CTS-Frequency Controls):

• Load Capacitance: 18 pF (intermediate value)
• ESR: 40 Ohms (intermediate value)
• Suitable for circuits designed for 18 pF load capacitance
• Larger physical dimensions (11.10mm L x 4.83mm W x 3.20mm H)
• Moderate inventory availability (1018 Pcs)

LP147F35IET (CTS-Frequency Controls):

• Load Capacitance: 20 pF (highest among substitutes)
• ESR: 40 Ohms (intermediate value)
• Suitable for circuits designed for 20 pF load capacitance
• Larger physical dimensions (11.10mm L x 4.83mm W x 3.20mm H)
• Lowest inventory availability (877 Pcs)

All substitutes comply with RoHS3 and maintain MSL 1 (Unlimited) moisture sensitivity rating. Selection must be based on the original circuit design specifications for load capacitance and ESR tolerance.

Frequently Asked Questions (FAQ)

Q: Can the 9C14700004 be directly replaced with any of these substitutes?

A: Direct replacement is possible only if the circuit design accommodates the load capacitance and ESR values of the selected substitute. The 9C14700004 specifies 16 pF load capacitance and 30 Ohms ESR. The substitutes range from 18-20 pF load capacitance and 40-60 Ohms ESR. Circuit schematic review is required to confirm compatibility.

Q: What is the difference between load capacitance values?

A: Load capacitance affects the crystal's oscillation frequency in the circuit. A crystal specified for 16 pF will oscillate at a slightly different frequency when connected to a circuit designed for 20 pF. The frequency difference depends on the circuit's capacitive loading network. Selection must match the circuit design specification.

Q: Why do the substitute parts have different ESR values?

A: Equivalent Series Resistance (ESR) affects the crystal's power consumption and startup characteristics. Lower ESR (30 Ohms) requires less drive power; higher ESR (60 Ohms) requires more. The circuit design determines acceptable ESR range. Verify the oscillator circuit's drive capability before selecting a substitute with higher ESR.

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

A: The 9C14700004 packaging format is not specified in the provided data. All three substitutes are supplied in Tape & Reel (TR) packaging, suitable for automated assembly. Physical dimensions vary: ECS-147.4-20-3X-EN-TR is significantly smaller (7.00mm x 4.10mm) compared to the CTS parts (11.10mm x 4.83mm). PCB layout compatibility must be verified.

Q: What is the significance of "Active" product status?

A: Active product status indicates the manufacturer continues production and maintains long-term supply availability. The 9C14700004 is obsolete, meaning TXC CORPORATION no longer manufactures it. Active substitutes ensure continued availability for production and field replacements.

Q: Do all substitutes meet the same compliance standards?

A: Yes. All three substitutes are RoHS3 Compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's compliance profile. REACH status differs: ECS-147.4-20-3X-EN-TR is REACH Unaffected; both CTS parts are REACH Unaffected. All carry EAR99 ECCN classification.