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Product Detailed Parameters
- Description：CAP SILICON 3.9PF 5% 25V 0402
- Series：RFCS
- Mfr：Vishay Electro-Films
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance：3.9 pF
- Tolerance：±5%
- Voltage - Breakdown：25 V
- ESL (Equivalent Series Inductance)：-
- Applications：-
- Features：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：0402 (1005 Metric)
- Height：0.016" (0.41mm)
- Size / Dimension：0.040" L x 0.020" W (1.02mm x 0.51mm)
- ESR (Equivalent Series Resistance)：-
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Overview
The RFCS04023900CJTT1 is a silicon thin film capacitor from Vishay Electro-Films, designed for high-frequency applications. It features a capacitance of 3.9 pF with a tolerance of ±5% and a rated voltage of 25 V. The component utilizes a 0402 (1005 Metric) surface-mount package, measuring 1.02 mm in length, 0.51 mm in width, and 0.38 mm in height. It operates within a temperature range of -55°C to +125°C and exhibits a temperature coefficient of 100 PPM/°C.
Feature Summary
- Utilizes silicon thin film technology for stable RF performance
- High Q factor suitable for radio frequency circuits
- Compact 0402 surface-mount footprint for space-constrained designs
Applications
- RF matching networks
- High-frequency filtering circuits
- Impedance matching in communication systems
Procurement Notes
This component is officially listed as obsolete and no longer manufactured by Vishay Electro-Films. Procurement must focus on identifying verified substitute part numbers from other manufacturers that meet the same electrical and mechanical specifications. Verify RoHS compliance and moisture sensitivity levels before integration into production lines.
Selection Notes
Select this component only if legacy design compatibility is required or if specific historical performance data validates its use. Due to its obsolete status, engineers should prioritize alternative silicon capacitors with identical capacitance, voltage rating, and package dimensions to ensure supply chain stability and long-term availability.
Part Context
The RFCS series represents Vishay's line of silicon RF capacitors known for high precision and low parasitic inductance. The RFCS04023900CJTT1 specifically targets the 3.9 pF value within the 0402 form factor, serving niche applications where standard ceramic capacitors may exhibit insufficient stability or higher losses at radio frequencies.
Replacement Considerations
Public confirmed substitutes include KYOCERA AVX part number 04023J4R7BBSTR, which offers similar specifications. Verify pinout compatibility and thermal characteristics when transitioning to alternative suppliers.
