C1206C105K4RAC Kemet Capacitor (Capacitor Chip Non-polarised) In Stock
C1206C105K4RAC is a Kemet 1 µF X7R MLCC in 1206 SMD package rated at 16 V with ±10% capacitance tolerance. This temperature-stable Class II multilayer ceramic capacitor targets decoupling, bypass, and filter applications in industrial, automotive, and consumer electronics designs.
- Manufacturer
- Kemet
- Package
- Capacitor Chip Non-polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- C1206C105K4RAC Datasheet PDF
- Category
- Capacitor
- Price
- From $0.0300(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of C1206C105K4RAC?
- 1 µF capacitance in 1206 SMD package providing high capacitance density for decoupling applications
- X7R Class II dielectric maintaining capacitance within ±15% from -55°C to +125°C
- 16 V voltage rating with recommended 2:1 derating for reliable operation on 5 V and 12 V rails
- ±10% tolerance ensuring consistent filter and bypass performance across production lots
- Non-polarized construction allowing bidirectional placement without orientation concerns during assembly
What is C1206C105K4RAC used for?
C1206C105K4RAC is commonly placed at the VDD pins of microcontrollers, FPGAs, and power management ICs to suppress high-frequency switching noise and stabilize supply rails. Its 1 µF value provides effective decoupling between 1 MHz and 100 MHz, bridging the gap between smaller 100 nF capacitors and larger 10 µF bulk capacitors in three-tier decoupling networks. The 1206 package supports both prototyping with hand soldering and automated SMD reflow assembly in production.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the C1206C105K4RAC datasheet?
C1206C105K4RAC Datasheet DownloadOfficial datasheet from Kemet
What are equivalent replacements for C1206C105K4RAC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does C1206C105K4RAC perform as a decoupling capacitor across frequency compared to 100 nF MLCC options?
A 1 µF C1206C105K4RAC provides low impedance decoupling from approximately 500 kHz to 20 MHz, complementing a 100 nF capacitor that is effective above 5 MHz. Using both values in parallel on the same power rail creates a wideband bypass network covering 100 kHz to 100 MHz, which is recommended practice for microcontroller and FPGA VDD pins to suppress both low and high-frequency supply noise.
At what actual working voltage should C1206C105K4RAC be operated to meet reliability derating requirements?
The C1206C105K4RAC is rated at 16 V. Applying a standard 2:1 voltage derating limits the working voltage to 8 V maximum for high-reliability industrial and automotive designs. At 5 V rail applications, the derating factor is 3.2:1, providing significant reliability margin and extending capacitor lifetime in elevated temperature environments up to +125°C.
How does the 1206 package size of C1206C105K4RAC affect self-resonant frequency compared to smaller 0603 packages?
The 1206 package has a slightly higher equivalent series inductance (ESL) than a 0603 package, resulting in a lower self-resonant frequency (SRF) typically around 5 MHz to 15 MHz for 1 µF. For applications requiring decoupling above 20 MHz, using 0603 1 µF capacitors alongside C1206C105K4RAC reduces ESL contributions, while the 1206 part handles bulk charge delivery at lower frequencies.
Can C1206C105K4RAC replace a 1 µF tantalum capacitor in industrial power supply filtering?
Yes, C1206C105K4RAC can replace a 1 µF tantalum capacitor in most industrial filtering roles. Unlike tantalum capacitors that are susceptible to failure under voltage surge conditions, C1206C105K4RAC is inherently non-polarized and tolerates reverse voltage without degradation. It also exhibits lower ESR than tantalum at high frequencies, improving its effectiveness in switching regulator output filters above 100 kHz.
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Why Buy from FindMyChip
About Kemet
Kemet is a leading electronic component manufacturer. FindMyChip sources Kemet ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1200 | $0.12 |
| 4+ | $0.0970 | $0.39 |
| 8+ | $0.0965 | $0.77 |
| 16+ | $0.0518 | $0.83 |
| 834+ | $0.0400 | $33.36 |
| 850+ | $0.0300 | $25.50 |
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