0.0047µF 400V Polyester Film Capacitor (2G472) – PIA Special

Description

The 0.0047µF 400V Polyester Film Capacitor (2G472) – PIA Special is a high-grade passive component engineered to withstand substantial voltage loads while delivering excellent stability. Constructed with a durable polyester film (Mylar) dielectric, this "PIA Special" variant is designed for enhanced reliability, offering superb moisture resistance and consistent capacitance across a wide range of operating conditions.

Available at Tomson Electronics, this capacitor features a robust 400V DC rating and provides a precise capacitance of 0.0047µF (4700pF or 4.7nF). Widely identified by the industry code "2G472", its standard radial through-hole design makes it exceptionally easy to integrate into custom printed circuit boards (PCBs). It is widely favored by hardware engineers and hobbyists for high-voltage filtering, snubber networks, and critical audio signal processing.

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Specifications

• Capacitor Type: Polyester Film (PET / Mylar) – PIA Special
• Capacitance Value: 0.0047 µF (4700 pF / 4.7 nF)
• Capacitance Code: 472
• Voltage Rating: 400V DC
• Voltage Code: 2G
• Tolerance: ±5% (J) or ±10% (K) Typical
• Mounting Type: Through-hole (Radial)
• Coating: Flame-retardant epoxy resin
• Polarity: Non-Polarized

Applications

• High-Voltage Power Supplies: Acting as a reliable filtering and decoupling capacitor in switch-mode power supplies (SMPS) and heavy-duty linear regulators.
• Snubber Circuits: Absorbing high-voltage transients and voltage spikes to protect mechanical switches, relays, and solid-state components.
• Audio Equipment: Serving as a highly stable coupling or bypass capacitor in custom tube amplifiers and high-end audio pre-amps.
• Lighting Circuits: Providing stable capacitance in electronic ballasts and high-intensity discharge lighting assemblies.

Frequently Asked Questions (FAQ)

Q: How do you read the capacitor code "2G472"?
A: The prefix "2G" is a standard EIA voltage code indicating a 400 Volts DC maximum rating (multiplier 100 × base 4.0). The "472" represents the capacitance in picofarads: the first two digits (47) are the base value, and the third digit (2) is the multiplier (number of zeros). So, 47 + 00 = 4700 pF, which translates to 4.7 nF or 0.0047 µF.

Q: Does this capacitor have a specific polarity?
A: No. Polyester film capacitors are entirely non-polarized. You can install them into your circuit board in either direction without needing to match positive or negative terminals.

Q: Can I use this 400V DC capacitor directly on a 220V AC mains line?
A: It is highly discouraged. While 400V DC is a high rating, AC voltage subjects the dielectric to continuous thermal stress that DC does not. For direct connection across AC mains, you should always use properly rated X-class or Y-class safety capacitors designed specifically to fail safely under AC stress.

Package Includes

• 1 × 0.0047µF 400V Polyester Film Capacitor (2G472) – PIA Special