F612JF104K100L

KEMET 0.1µF 100V F612 metallized polyester stacked film capacitor, ±10%, radial lead 5mm, -55 to +105°C

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Manufacturer Part：

F612JF104K100L

Package：

Radial Lead, 5mm pitch (7.2 x 6.5 x 2.5mm)

Description

Product Overview

The F612JF104K100L from KEMET is a 0.1µF 100V DC metallized polyester (MKT) stacked film capacitor with radial leads. The F612 series uses stacked metallized polyester film construction for DC and low-frequency AC applications requiring stable capacitance, low dissipation factor, and high insulation resistance. This capacitor is commonly used in analog signal coupling, timing circuits, and general-purpose DC applications.

Key Specifications

Manufacturer	KEMET (YAGEO Group)
Capacitance	0.1 µF (100 nF)
Voltage Rating	100V DC
Dielectric	Metallized Polyester (MKT)
Tolerance	±10% (K)
Dissipation Factor	≤ 0.8% @ 1kHz, ≤ 1.2% @ 10kHz
Insulation Resistance	≥ 15 GΩ
Max dV/dt	200 V/µs
Inductance	6 nH (typical)
Operating Temperature	-55°C to +105°C (derated above +85°C)
Package	Radial Lead, 5mm lead spacing, 7.2 x 6.5 x 2.5mm
RoHS	Compliant

Features

0.1µF 100V metallized polyester film capacitor
F612 series MKT stacked film construction
±10% capacitance tolerance
Low dissipation factor (≤ 0.8% @ 1kHz)
High insulation resistance (≥ 15 GΩ)
Self-healing metallized film technology
Radial lead, 5mm pitch for through-hole mounting
RoHS compliant

Applications

Analog signal coupling and DC blocking
RC timing circuits and oscillators
Active filter networks
Snubber circuits for low-power switching
General-purpose DC applications

Product Introduction:F612JF104K100L Product Introduction

The F612JF104K100L from KEMET is a 0.1µF 100V DC metallized polyester (MKT) stacked film capacitor with radial leads on 5mm pitch. The F612 series uses a stacked construction where multiple metallized polyester film layers are pressed together and encapsulated, providing a compact through-hole film capacitor with excellent electrical characteristics. The metallized polyester dielectric offers a good balance of dielectric constant (εr ≈ 3.3), dissipation factor, and cost for general-purpose DC and low-frequency AC applications. The self-healing property of metallized film ensures that any localized dielectric breakdown is cleared by the evaporation of the thin metal layer around the fault, isolating the defect and maintaining capacitor functionality.

Working Principle:F612JF104K100L Working Principle

The F612JF104K100L operates as a metallized polyester film capacitor using the self-healing mechanism inherent to metallized film construction. The polyester (polyethylene terephthalate, PET) dielectric film is approximately 3-5µm thick, with a thin aluminum or zinc metallization (20-50nm) vacuum-deposited on one surface. When a dielectric defect or overvoltage event causes a localized breakdown, the arc current rapidly heats and evaporates the thin metallization in a small zone around the breakdown point (typically 1-3mm diameter), clearing the short circuit and restoring the capacitor’s insulation. This self-healing process produces a small, brief voltage transient but does not significantly affect the overall capacitance or performance of the capacitor. The stacked construction provides lower inductance (6nH typical) compared to wound film capacitors, making the F612 suitable for higher-frequency applications.

Pin Description:F612JF104K100L Pin Definition and Functions

Pin	Name	Type	Function
1	Lead 1	Passive	One electrode; non-polar, either lead can be positive
2	Lead 2	Passive	Other electrode; 5mm lead spacing from Lead 1

Application Scenarios:In which products and applications isF612JF104K100L used

Signal Coupling: AC coupling between analog circuit stages where film capacitor stability and low distortion are preferred over ceramic alternatives.
RC Timing: Precision RC timing circuits where the stable 0.1µF value and low dissipation factor ensure timing accuracy.
Active Filters: Sallen-Key and multiple-feedback active filter networks where polyester’s predictable characteristics enable accurate filter response.
Snubber: Low-power snubber networks for relay and switch contact protection where 100V rating provides margin.

Alternative Models:What chips are recommended as replacements for F612JF104K100L

Manufacturer	Part Number	Cap	Volt	Notes
WIMA	MKS2C041001F00KSSD	0.1µF	100V	Polyester film equivalent
EPCOS	B32529C3104K	0.1µF	100V	PET film equivalent
KEMET	F612JF104K63L	0.1µF	63V	Lower voltage alternative
Panasonic	ECQ-E2104KF	0.1µF	100V	Mylar film equivalent