C1206C226Z9VAC-TU

22µF 6.3V Y5V MLCC, 1206, -20%/+80%, high CV bulk capacitor

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Manufacturer Part：

C1206C226Z9VAC-TU

Package：

1206 (3216 Metric) - 3.2 × 1.6 × 1.7mm

Description

Product Overview

The C1206C226Z9VAC-TU from KEMET is a 22µF 6.3V MLCC in a 1206 (3216 metric) package with Y5V dielectric and -20%/+80% tolerance. The Y5V dielectric provides maximum capacitance per unit volume, making it suitable for bulk energy storage in low-voltage applications where tight capacitance tolerance is not required.

Key Specifications

Capacitance	22µF
Rated Voltage	6.3V DC
Tolerance	-20%/+80% (Z)
Dielectric	Y5V (EIA Class II)
Package	1206 (3216 Metric) – 3.2 × 1.6 × 1.7mm
Operating Temperature	-30°C to +85°C
Temperature Coefficient	+22%/-82% over temperature range

Features

22µF very high capacitance in 1206 for bulk energy storage
Y5V dielectric maximizes CV density at low voltage
6.3V rating for 3.3V and 5V power rails
Wide -20%/+80% tolerance acceptable for decoupling
Non-polar MLCC suitable for AC coupling

Applications

3.3V microcontroller bulk decoupling
5V USB power rail bypass
Low-voltage energy storage and hold-up
DC-DC converter output filtering (non-critical)
Battery-powered device power rail smoothing

Product Introduction:C1206C226Z9VAC-TU Product Introduction

The C1206C226Z9VAC-TU from KEMET is a 22µF 6.3V MLCC in a 1206 (3216 metric) package with Y5V dielectric and -20%/+80% tolerance. The KEMET part numbering: C=MLCC, 1206=size, C=series, 226=22µF (22×10⁶pF), Z=-20%/+80%, 9=6.3V, V=Y5V dielectric, AC=process code, TU=packaging. The Y5V (Z5U class) dielectric provides the highest CV density among Class II ceramics but with very wide capacitance variation over temperature (+22%/-82%) and voltage. This makes it suitable for bulk decoupling where capacitance value is not critical, but maximum capacitance per unit volume is desired. The 1206 package provides adequate area for 22µF with reasonable reliability.

Working Principle:C1206C226Z9VAC-TU Working Principle

The C1206C226Z9VAC-TU uses KEMET’s multilayer ceramic construction with Y5V dielectric, which is based on a modified barium titanate composition optimized for maximum dielectric constant (K). The Y5V formulation achieves K values of 10,000-15,000, enabling the very high 22µF capacitance in a small 1206 package. However, the high-K formulation comes with significant temperature and voltage dependencies: the capacitance can drop by up to 82% at the temperature extremes and decreases further with applied DC voltage. The inner electrodes (typically Ni) are alternately connected to the two end terminations (Cu/Ni/Sn). The wide -20%/+80% tolerance reflects the inherent variability of the Y5V dielectric formulation.

Pin Description:C1206C226Z9VAC-TU Pin Definition and Functions

Pin	Name	Type	Function
1	Terminal 1	Passive	One electrode
2	Terminal 2	Passive	Other electrode; non-polar

Application Scenarios:In which products and applications isC1206C226Z9VAC-TU used

3.3V MCU bulk decoupling where 22µF effective provides ample charge reservoir
5V USB VBUS bulk capacitor for peripheral device power stabilization
Battery-powered IoT device 3.3V rail hold-up capacitor during transmit bursts
DC-DC converter 3.3V output bulk filter where tight tolerance is not required
Low-cost consumer electronics 5V power rail bulk bypass capacitor

Alternative Models:What chips are recommended as replacements for C1206C226Z9VAC-TU

Manufacturer	Part Number	Package	Notes
KEMET	C1206C226M9PACTU	1206	22µF 6.3V X5R ±20%
Murata	GRM31MR60J226ME19L	1206	22µF 6.3V X5R ±20%
TDK	C3216X5R1A226M160AB	1206	22µF 10V X5R ±20%
Samsung	CL31B226MQHNNNE	1206	22µF 6.3V X5R ±20%
YAGEO	CC1206MKX5R5BB226	1206	22µF 6.3V X5R ±20%