CL31B155KOFNFNE - 1.5uF 16V X7R MLCC 1206 | Samsung Electro-Mechanics
料号： CL31B155KOFNFNE ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.14 | $1.40 |
| 100 | $0.09 | $9.00 |
| 500 | $0.07 | $35.00 |
| 1,000 | $0.055 | $55.00 |
| 4,000 | $0.038 | $152.00 |
CL31B155KOFNFNE 概述
A multilayer ceramic capacitor (MLCC) is a passive surface-mount component composed of alternating layers of ceramic dielectric and metal electrodes, terminated at both ends with nickel-barrier/tin plating. MLCCs are the most common capacitor type in modern electronics, used for decoupling, bypass, filtering, and energy storage. The X7R dielectric class delivers medium-to-high capacitance density with reasonable temperature and voltage stability, balancing cost and performance versus X5R (lower temperature range) and C0G/NP0 (lower capacitance but near-zero drift).
Key specifications of the CL31B155KOFNFNE include a 1.5 uF nominal capacitance with ±10% tolerance, a 16 V DC rated voltage, X7R temperature characteristic (X = -55C minimum, 7 = +125C maximum, R = ±15% capacitance change), and the standard 1206 (3.20 x 1.60 mm) case size. The 1206 footprint offers a good trade-off between PCB real estate and ESR/ESL performance for general-purpose decoupling.
In the Samsung CL31B part-numbering scheme, "CL" denotes the general-purpose MLCC family, "31" identifies the 1206 inch code, "B" marks X7R dielectric, "155" encodes the 1.5 uF value (15 x 10^5 pF), "K" indicates ±10% tolerance, "O" specifies 16V rating, and "F" denotes the standard thickness/series code. The "N" packaging code in the suffix specifies tape-and-reel packaging with 7-inch reel format.
Typical applications include 16V rail decoupling in microcontrollers, ASIC/FPGA power pins, USB power delivery bypass, automotive ECU power conditioning, and DC-DC converter output filters. The 1206 case provides mechanical robustness for high-vibration automotive environments while staying within standard SMT pick-and-place tolerances.
When designing with this part, derate the working voltage by 50% for long-term reliability, place the capacitor within 1-2 mm of the IC power pin to minimize loop inductance, and consider paralleling with a smaller 0.1 uF capacitor for high-frequency noise suppression. X7R capacitance drops with DC bias, so verify the in-circuit effective capacitance under actual operating voltage.
This page synthesizes distributor pricing, drop-in same-family and cross-brand alternatives, AEC-Q200 compliance details, and PCB layout notes that complement, rather than duplicate, the official Samsung datasheet.
直接替换替代料： CL31B155KOFNFNE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
CL31B155KOFNNNE
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KBFNNNE
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KOHNNNE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
GRM31MR71C155KA93L
✅ 直接替换📋 参考替代料（不在目录中）
CGA5L2X7R1C155K160AA
✅ 直接替换📋 参考替代料（不在目录中）
CC1206KKX7R7BB155
✅ 直接替换📋 参考替代料（不在目录中）
1206YC155KAT2A
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KOFNFNE 最大额定值与电气特性
| Capacitance | 1.5 uF |
| Capacitance Tolerance | ±10% |
| Rated Voltage (DC) | 16 V |
| Dielectric (EIA) | X7R |
| 工作温度范围 | -55C to +125C |
| Temperature Coefficient | ±15% (X7R) |
| 封装 / 外壳 | 1206 (3216 metric) |
| Length | 3.20 ± 0.15 mm |
| Width | 1.60 ± 0.15 mm |
| 安装类型 | Surface Mount |
| Termination Style | Nickel Barrier / Tin (Ni/Sn) |
| Packaging | Tape & Reel (7-inch) |
| Automotive Qualification | AEC-Q200 |
| RoHS 状态 | Compliant |
| MSL 等级 | 1 (unlimited) |
CL31B155KOFNFNE 1206 (3216 metric) 引脚配置指南
CL31B155KOFNFNE（1206 (3216 metric) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： CL31B155KOFNFNE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CL31B155KOFNFNE 适用于 6 应用s: Automotive ECU Power Decoupling, USB Power Delivery Bypass, DC-DC Converter Output Filter, Microcontroller Power Pin Bypass, Industrial Sensor Signal Conditioning, FPGA/ASIC Power Rail Decoupling.
Automotive ECU Power Decoupling
The CL31B155KOFNFNE's 1.5 uF capacitance, 16 V rating, and AEC-Q200 qualification make it ideal for decoupling 12V automotive rails inside engine and body ECUs. Its X7R dielectric maintains ±15% capacitance change across -55C to +125C, ensuring stable power delivery during cold-cranking at -40C and under-hood thermal soak at +125C. Placed within 1-2 mm of each MCU and ASIC power pin, it suppresses voltage transients from injectors, solenoids, and CAN transceivers that share the same battery rail. The 1206 case offers superior mechanical robustness versus smaller 0805 parts, surviving automotive vibration profiles per AEC-Q200 mechanical shock and vibration tests. Compared to polymer or tantalum alternatives, this X7R MLCC has much lower ESR (single-digit milliohms) and zero wear-out mechanisms, making it the preferred 16V rail bypass for next-generation automotive designs.
推荐
USB Power Delivery Bypass
In USB-PD and USB 3.0 downstream ports, the CL31B155KOFNFNE provides 1.5 uF of bulk decoupling on the 5V VBUS rail, smoothing load steps when devices hot-plug or negotiate higher PD contracts. Its 16V rating comfortably derates below the 5V USB rail, allowing the same part to also serve on 12V auxiliary supplies in USB-PD PPS designs. X7R's modest DC-bias derating (~20% loss at 16V) is negligible at 5V operation, preserving effective capacitance near the nominal 1.5 uF. Pairing this part with a smaller 0.1 uF X7R in 0402 creates a broadband decoupling network that suppresses both low-frequency load transients and high-frequency switching noise from PD controllers. The 1206 case reflows with standard lead-free profiles and is compatible with high-volume pick-and-place lines for hub, dock, and laptop designs.
推荐
DC-DC Converter Output Filter
Place the CL31B155KOFNFNE at the output of a 12V-to-3.3V buck regulator to filter switching ripple and load-step transients. With 1.5 uF of capacitance and X7R's stable dielectric behavior, it smooths the regulator's switching frequency (typically 500 kHz to 2 MHz) while remaining stable across the -40C to +125C automotive temperature range. The 16V rating provides generous headroom over typical 12V bus voltages. Compared to ceramic capacitors with higher dielectric constants (Y5V, Z5U), the X7R dielectric exhibits far less capacitance loss with DC bias, preserving filtering effectiveness. Designers should parallel this part with a 10 uF or 22 uF polymer aluminum or ceramic cap for the bulk energy-storage role - the 1.5 uF 1206 handles the high-frequency ripple while the larger cap handles slow load steps.
推荐
Microcontroller Power Pin Bypass
The CL31B155KOFNFNE is well-suited as a local bypass cap on each power pin of low-power microcontrollers, signal microcontrollers, and wireless SoCs. Its 1.5 uF capacitance is large enough to supply instantaneous current during CPU wake-up events (10-50 mA steps) while the 1206 case still leaves room for dense PCB layouts. The X7R dielectric's ±15% temperature variation ensures stable bypass performance from cold-start (-40C) to operating temperature (+85C consumer, +125C industrial). Place the capacitor within 1-2 mm of the MCU power pin with a 0.1 uF 0402 high-frequency bypass nearby; the 1.5 uF 1206 handles the mid-frequency decoupling range while the small 0402 handles RF and edge-rate noise. The AEC-Q200 qualification allows reuse of the same BOM across commercial and automotive MCU variants.
推荐
Industrial Sensor Signal Conditioning
In 4-20 mA current-loop transmitters, RTD signal conditioning, and strain-gauge bridges, the CL31B155KOFNFNE provides stable, low-noise supply rail filtering that does not inject measurable drift into high-gain analog signal paths. X7R's voltage coefficient (~-20% at 16V) is much better than Y5V's (-80%) and acceptable for 12V or 15V industrial rails. The 1206 case handles the mechanical stress of industrial DIN-rail and panel-mount environments better than 0603 or 0805 parts. AEC-Q200 qualification means the part survives industrial temperature and vibration profiles. Use one 1.5 uF 1206 per op-amp stage and one at the ADC reference pin for clean supply on 16-bit and 18-bit precision converters used in weigh scales, pressure transducers, and process-control loops.
推荐
FPGA/ASIC Power Rail Decoupling
Small-to-medium FPGAs and ASICs with 16V-tolerant auxiliary rails benefit from the CL31B155KOFNFNE as a local decoupling cap on 12V or 15V auxiliary supplies. Its 1.5 uF capacitance provides mid-frequency bulk decoupling between the bulk polymer/electrolytic caps at the regulator output and the smaller 0.1 uF/1 nF caps directly at the IC power pins. X7R's predictable temperature and voltage behavior allows accurate power-integrity simulation; designers can model the 1206 case as a 1.5 uF capacitor with 5-10 milliohm ESR and ~50 pH ESL in SPICE. The 1206 size is large enough to dissipate minimal self-heating under continuous ripple current and small enough to fit between dense BGA pin rows. AEC-Q200 qualification supports industrial and automotive FPGA designs using Cyclone, Spartan, or smaller Kintex families.
推荐
推荐产品汇总
工程参考数据： CL31B155KOFNFNE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CL31B155KOFNNNE | GRM31MR71C155KA93L | CGA5L2X7R1C155K160AA | CC1206KKX7R7BB155 | 1206YC155KAT2A |
|---|---|---|---|---|---|---|
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Murata Manufacturing | TDK | Yageo | KYOCERA AVX |
| Package | 1206 (3216 metric) | 1206 (3216 metric) - same | 1206 (3216 metric) - same | 1206 (3216 metric) - same | 1206 (3216 metric) - same | 1206 (3216 metric) - same |
| Capacitance | 1.5 uF | 1.5 uF | 1.5 uF | 1.5 uF | 1.5 uF | 1.5 uF |
| Rated Voltage (DC) | 16 V | 16 V | 16 V | 16 V | 16 V | 16 V |
| Capacitance Tolerance | ±10% | ±10% | ±10% | ±10% | ±10% | ±10% |
| Dielectric (EIA) | X7R | X7R | X7R | X7R | X7R | X7R |
| Operating Temperature | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C | -55C to +125C |
| Automotive Qualification | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 (commercial-grade) | AEC-Q200 |
| Approx. Unit Price (qty 1, USD) | $0.18 | $0.18 | $0.22 | $0.25 | $0.13 | $0.20 |
关键差异点
- AEC-Q200 qualified automotive-grade reliability （对比 Generic 1206 1.5uF 16V X7R capacitors)
- Samsung CL31B series with X7R ±15% temperature stability （对比 Lower-grade X5R/Y5V dielectrics)
- 1206 case for robust mechanical handling （对比 Smaller 0805 1.5uF 16V X7R parts)
设计说明
Place the CL31B155KOFNFNE within 1-2 mm of the IC power pin it is decoupling, using short and wide traces (≥0.3 mm wide) to minimize parasitic inductance. Keep the via count to the power plane to a minimum - prefer two vias on each pad (one for power, one for ground) on small 1206 land patterns. Maintain symmetric trace lengths on both terminals to avoid introducing common-mode inductance. For high-current rails (>500 mA), use multiple 1.5 uF 1206 parts in parallel rather than a single larger capacitor, which reduces both ESR and ESL while improving thermal spreading.
X7R MLCCs exhibit significant DC-bias capacitance loss - the CL31B155KOFNFNE's nominal 1.5 uF can drop by 20-30% when operated at the full 16 V rated voltage. Designers should verify in-circuit effective capacitance at the actual operating voltage, not just the nominal value. Exceeding the 16V rating (even briefly during transients) can cause dielectric breakdown. Also avoid mechanical stress on the 1206 case: do not place the part near board edge cuts, screw holes, or PCB flex zones, as flexure can crack the ceramic dielectric and cause field failures.
While MLCCs do not dissipate significant power, reflow soldering exposes the CL31B155KOFNFNE to peak temperatures of 245-260C for lead-free profiles. Follow the standard lead-free reflow profile: 150C/min preheat ramp, 60-90s above 200C, and 20-40s above 230C with peak at 250C for <30s. Avoid wave soldering on 1206 parts - the thermal shock can crack the ceramic. For double-sided reflow, mount the heavier components on the bottom side first to reduce risk of tombstoning on the top side. After reflow, the part is rated for -55C to +125C operating temperature per the X7R dielectric specification.
合规信息
AEC-Q200 qualified for automotive passive components (not AEC-Q100 - Q100 applies to active semiconductors). RoHS compliant per Samsung datasheet; lead-free Ni/Sn termination. Halogen-free and REACH compliant per Samsung product declaration.
