CL31B106KBHNNNE - 10µF 50V X7R 1206 MLCC | Samsung Electro-Mechanics
MPN: CL31B106KBHNNNE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.26 | $26.00 |
| 500 | $0.21 | $105.00 |
| 1,000 | $0.18 | $180.00 |
| 4,000 | $0.15 | $600.00 |
CL31B106KBHNNNE Overview
An MLCC (Multilayer Ceramic Capacitor) is a passive component constructed from alternating layers of ceramic dielectric and metal electrodes, terminated with nickel-barrier and tin outer layers for solderability. Within the broader capacitor taxonomy, MLCCs sit alongside aluminum electrolytic, tantalum, and film capacitors, offering the lowest ESL/ESR and best high-frequency behavior, but with the trade-off of DC-bias capacitance loss and piezoelectric effects. The X7R dielectric is a Class-II (mid-k) formulation rated for -55°C to +125°C with ±15% capacitance change across the operating range, the workhorse choice for general-purpose decoupling, filtering, and bulk energy storage where stability across temperature is acceptable.
Key features that distinguish the CL31B106KBHNNNE include its high 10 µF capacitance in a compact 1206 footprint and the ±10% (K) tolerance code indicating standard industrial precision. The 50 V rating provides generous headroom for 12 V, 24 V, and 48 V power-rail bypass applications. The 1206 case measures 3.20 mm × 1.60 mm, making it well suited for high-density PCB layouts where 0805 or smaller case sizes cannot provide sufficient energy storage.
The X7R dielectric exhibits noticeable DC-bias derating; at high applied DC voltage the effective capacitance can drop substantially from nominal, so designers should de-rate when targeting high-voltage rails. Compared to tantalum alternatives, the X7R MLCC offers higher ripple current handling, no polarity sensitivity, and superior high-frequency performance, at the cost of audible noise under mechanical stress (piezoelectric effect).
Typical applications include 48 V bus decoupling in telecom hardware, bulk bypass for USB-PD controllers, motor-driver snubbers, and general-purpose power-rail filtering. The 1206 footprint provides a balanced trade-off between board area and current-handling, while the wide voltage rating supports industrial and automotive environments where 12 V and 24 V rails are common.
For PCB layout, place the capacitor as close as possible to the IC supply pin, use wide power traces, and place multiple capacitors in parallel when the application demands both high capacitance and low impedance across a wide frequency range. The 1206 footprint tolerates standard reflow profiles up to 260°C and is compatible with both leaded and lead-free solder systems.
This page synthesizes distributor pricing, cross-brand MLCC equivalents (Murata, TDK), and practical DC-bias derating guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for CL31B106KBHNNNE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CL31B106KBHNNNE (same form factor and footprint) — differing in Capacitance, Mounting Type, Package / Case, Termination Style, Capacitance Tolerance.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
GRM31CR71H106KA12L
✅ Drop-In📋 Reference alternative (not in catalog)
C3216X7R1H106K160AC
✅ Drop-In📋 Reference alternative (not in catalog)
C1206C106K5RACTU
✅ Drop-In📋 Reference alternative (not in catalog)
GRM32EC72A106KE05L
✅ Drop-In✓ In Stock
$0.42 / Unit
View Datasheet →CL31B106KBHNNNE Maximum Ratings & Electrical Characteristics
| Capacitance | 10 µF |
| Capacitance Tolerance | ±10% (K code) |
| Rated Voltage | 50 V DC |
| Dielectric | X7R (EIA Class-II) |
| Operating Temperature Range | -55 °C to +125 °C |
| Temperature Coefficient | ±15% over -55 °C to +125 °C |
| Package / Case | 1206 (3216 metric) |
| Case Size (L × W) | 3.20 mm × 1.60 mm |
| Mounting Type | Surface Mount (SMD/SMT) |
| Termination Style | Nickel barrier + tin (matte Sn) plating |
| Packaging | Tape & Reel (7-inch reel) |
| Standard Reel Quantity | 4,000 pcs |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Compliance | Compliant |
| AEC-Q200 Qualification | Qualified |
CL31B106KBHNNNE 3.20 mm × 1.60 mm Pin Configuration Guide
Pin configuration for CL31B106KBHNNNE (3.20 mm × 1.60 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for CL31B106KBHNNNE.
Refer to the datasheet for full pin configuration.
Typical Applications
CL31B106KBHNNNE is suitable for 6 applications: 48V Telecom Bus Bulk Decoupling, USB-PD Controller Power Rail Filtering, Motor Driver Snubber and Bypass, Industrial 24V Power Rail Decoupling, Automotive ECU Bulk Energy Storage, General-Purpose Power Rail Filtering.
48V Telecom Bus Bulk Decoupling
The Samsung CL31B106KBHNNNE is well suited as a bulk decoupling capacitor on 48V telecom bus rails, where its 50V rating and 10 µF X7R capacitance provide the energy storage needed to handle transient load steps from line cards and PoE subsystems. According to Samsung Electro-Mechanics datasheet curves, designers should de-rate the working voltage to 30-35V to maintain effective capacitance above 7 µF. Placed near the input of buck converters and POL regulators, it absorbs switching ripple and provides hold-up during sudden current demands. The 1206 footprint supports standard reflow and high-density telecom PCB layouts where space is constrained.
Recommended
USB-PD Controller Power Rail Filtering
The CL31B106KBHNNNE provides bulk filtering on the VBUS rail of USB-PD controllers, where 10 µF capacitance and 50V rating accommodate the 5V/9V/15V/20V PDO voltage levels plus margin for hot-plug transients. The 1206 footprint is the standard recommended by USB-PD reference designs and handles the surge currents during PD negotiation. According to MLCC application guidance, parallel placement of the 1206 with a smaller 0402/0603 capacitor creates a wide-bandwidth filter that suppresses both bulk ripple and high-frequency switching noise. AEC-Q200 qualification also makes the part suitable for automotive USB-PD ports.
Recommended
Motor Driver Snubber and Bypass
For BLDC and stepper motor driver designs, the CL31B106KBHNNNE serves as a snubber and bulk bypass capacitor across the motor supply rail, absorbing inductive kickback from PWM switching and providing local energy storage. The 50V rating covers 24V industrial motor supplies plus transient overshoot, while the X7R dielectric's stability over -55°C to +125°C matches motor operating environments. According to Samsung's automotive-grade qualification, the AEC-Q200 rating allows use in under-hood motor control modules. The 1206 footprint is preferred over smaller 0805 for high-ripple current handling at motor PWM frequencies.
Recommended
Industrial 24V Power Rail Decoupling
The CL31B106KBHNNNE is ideal for decoupling 24V industrial power rails common in PLCs, industrial sensors, and factory automation equipment, where its 50V rating provides 2x headroom over the working voltage. The 10 µF capacitance handles the bulk decoupling needed for digital ICs, ADC references, and CAN/RS-485 transceivers operating from the 24V bus. The 1206 case with Ni/Sn termination tolerates the higher reflow temperatures common in industrial PCB assembly. AEC-Q200 qualification gives designers a single part number for both industrial and adjacent automotive applications, simplifying BOM management.
Recommended
Automotive ECU Bulk Energy Storage
AEC-Q200 qualification makes the CL31B106KBHNNNE directly applicable to automotive ECU power rails, including body controllers, ADAS sensor modules, and infotainment systems. The 50V rating supports 12V battery transients up to Load Dump specifications, while 10 µF provides enough energy storage for cold-crank events and ignition pulse ride-through. The X7R dielectric's ±15% capacitance stability over -55°C to +125°C covers under-hood and cabin automotive temperature ranges. The 1206 footprint is the preferred case for high-reliability automotive designs where mechanical robustness is required.
Recommended
General-Purpose Power Rail Filtering
For general-purpose power-rail filtering in consumer electronics, IoT devices, and embedded systems, the CL31B106KBHNNNE delivers 10 µF bulk capacitance with 50V headroom at a low per-piece cost. The 1206 case balances PCB area with current handling, fitting most consumer layouts while supporting standard reflow profiles. According to Samsung Electro-Mechanics characterization data, the part exhibits low ESR across frequency, making it equally effective for bulk and mid-frequency decoupling. When paired with a smaller 0402 or 0603 capacitor in parallel, it creates a flat impedance profile from 100 kHz to 100 MHz.
Recommended
Recommended Products Summary
Engineering reference data for CL31B106KBHNNNE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | GRM31CR71H106KA12L | C3216X7R1H106K160AC | C1206C106K5RACTU |
|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Murata Manufacturing | TDK | KEMET |
| Package | 1206 (3216 metric) | 1206 (3216 metric) - same | 1206 (3216 metric) - same | 1206 (3216 metric) - same |
| Capacitance | 10 µF | 10 µF | 10 µF | 10 µF |
| Rated Voltage | 50 V | 50 V | 50 V | 50 V |
| Dielectric | X7R | X7R | X7R | X7R |
| Capacitance Tolerance | ±10% | ±10% | ±10% | ±10% |
| Operating Temperature | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C | -55°C to +125°C |
| AEC-Q200 Qualified | Yes | Yes | Yes | Yes (automotive grade available) |
| Unit Price (1k qty, USD) | 0.18 | 0.20 | 0.22 | 0.19 |
Key Differentiators
- Samsung's published DC-bias curves enable accurate derating calculations (vs GRM31CR71H106KA12L (Murata))
- 50V rating provides 2x headroom over 24V industrial rails (vs T491A106K010AT (Kemet tantalum 10µF/10V))
- 1206 footprint is the preferred form factor for automotive-grade energy storage (vs TMK107BJ106MA-T (Taiyo Yuden 0603 10µF))
Design Notes
X7R MLCCs exhibit significant DC-bias derating. According to Samsung Electro-Mechanics published curves, the CL31B106KBHNNNE can lose 20-30% of its nominal 10 µF capacitance when operated at the full 50 V rated voltage, with effective capacitance dropping to roughly 7-8 µF. Designers should consult the datasheet's DC-bias graph and either de-rate the working voltage to ~30 V or parallel multiple capacitors when targeting full 10 µF performance at high voltage rails.
Place the CL31B106KBHNNNE as close as possible to the IC supply pin with wide power traces to minimize parasitic inductance. For wide-bandwidth decoupling, parallel a smaller 0402 or 0603 X7R capacitor - the 1206 handles bulk energy storage while the smaller case suppresses high-frequency noise above 10 MHz. Use multiple vias to inner ground/power planes for low-impedance return paths, especially in high-current motor and PoE applications.
The 1206 footprint is compatible with all major MLCC manufacturers, allowing drop-in substitution between Samsung, Murata, TDK, and KEMET. However, AEC-Q200 grade designation varies - the standard CL31B106KBHNNNE is qualified, but some cross-brand equivalents may be commercial-grade only. For automotive designs, verify the AEC-Q200 mark on the cross-referenced part to ensure reliability under automotive stress test conditions.
Compliance Information
AEC-Q200 qualified per Samsung Electro-Mechanics product page. RoHS compliant and lead-free. Halogen-free per industry standard MLCC construction. MSL Level 1 per JEDEC J-STD-020.
