Product Overview
Metallized polyester 100nF 400VDC radial lead capacitor for coupling and snubber circuits
Condition
Unused, NOS – New Old Stock. Excellent condition with nothing out of the ordinary noted. Visual inspection OK. Sourced from an electronics distributor that was consolidating inventory.
Ships same business day. Reliable parts at honest prices since 1999. Real humans.
Product Overview
Nichicon 0.1 microfarad 400V film capacitor with radial leads, marked ".1 K 400." The 0.1µF value (100nF) with a 400VDC rating makes it a common choice for blocking, coupling, and decoupling in higher-voltage circuits. The "K" tolerance code indicates ±10%. Built using metallized polyester film, this style is known for stable general-purpose performance and self-healing behavior under minor dielectric stress.
Key Features
- Brand: Nichicon
- Marking: .1 K 400
- Capacitance: 0.1µF (100nF)
- Tolerance: ±10% (K code)
- Rated Voltage: 400VDC
- Dielectric: Metallized polyester film
- Construction: Epoxy-encapsulated, flame-retardant coating
- Radial lead through-hole mounting
- Self-healing metallized film design
Applications
- Signal coupling in tube amplifiers and high-voltage audio stages
- Power supply bypass and decoupling in 400VDC circuits
- RC snubber networks for relays, motors, and inductive loads
- General-purpose blocking capacitor in analog designs
- Vintage electronics repair and restoration
- Bench stock for high-voltage prototyping work
Frequently Asked Questions
What does ".1 K 400" mean?
".1" indicates 0.1 microfarad (100nF), "K" is ±10% tolerance, and "400" specifies a 400VDC maximum working voltage.
Is 400V the AC rating?
No. The 400V rating is for DC. AC voltage ratings are lower and depend on frequency and application.
What type of film is used?
This style uses metallized polyester film, which offers general-purpose stability and self-healing characteristics.
Can this be used in tube amplifiers?
Yes, a 0.1µF 400V capacitor is commonly used for coupling and tone positions in vacuum tube circuits where plate voltages are elevated.
Is lead spacing specified?
Lead spacing is not specified in this listing. Please verify physical fit requirements before installation.
A steady, high-voltage film cap that shows up everywhere from snubbers to tube gear. Keep a few on hand and most 0.1µF jobs are covered.
