Samsung CL31B155KAPLNNE - 1.5µF 25V X7R 1206 MLCC | AEC-Q200
料号： CL31B155KAPLNNE ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.15 | $1.50 |
| 100 | $0.11 | $11.00 |
| 500 | $0.09 | $45.00 |
| 1,000 | $0.07 | $70.00 |
CL31B155KAPLNNE 概述
Multilayer ceramic capacitors (MLCCs) are passive two-terminal energy-storage components built from alternating layers of ceramic dielectric and metal electrodes, surface-mountable on a printed circuit board. They sit within the broader hierarchy of ceramic capacitor -> capacitor -> passive component -> electronic component. Within automotive electronics they serve as the workhorse decoupling element, with X7R being the most common mid-K dielectric for general-purpose 1 nF to 10 µF applications that demand moderate volumetric efficiency without the piezoelectric noise or DC-bias collapse associated with Y5V/Y5U/Y5T classes.
Key features include a 1.5 µF nominal capacitance with ±10% tolerance, 25 V DC rated voltage (the PL letters indicate an automotive/AEC-Q200 product grade per Samsung's part-number scheme), X7R temperature characteristic (EIA RS-102 / RS-198), and a 1206 (3.2 × 1.6 mm) land pattern compatible with standard SMT reflow profiles at 245 °C peak per J-STD J-020. The 1206 case size provides higher energy density and lower equivalent series resistance (ESR) than smaller 0805 or 0603 parts, while still being small enough for typical automotive ECUs, ADAS sensor boards, and powertrain modules.
From an engineering standpoint, X7R MLCCs exhibit DC-bias capacitance loss - the 1.5 µF nominal drops measurably at applied DC voltage - so engineers should consult the AVCC section of the Samsung datasheet and derate capacitance by 30-50% for bulk-2-decade applications. The PL suffix confirms AEC-Q200 qualification, meaning the part has passed thermal-shock, vibration, and biased-humidity stress tests required for automotive use.
Typical applications include automotive ECU decoupling, ADAS radar/sensor power-rail bypass, powertrain control modules, and AEC-Q200 in-class automotive electronics. It is also used in industrial DC-DC converter output filters and consumer-grade bulk decoupling where X7R stability is preferred over Y5V.
Designers should account for DC-bias derating at 25 V - actual capacitance at rated voltage is typically 30-50% lower than the 1.5 µF nominal. Use a 1 µF effective capacitance budget for bulk-2-decade filtering, to avoid DC-bias undershoot surprise.
This page synthesises distributor pricing, drop-in alternatives within the same 1206 footprint, and practical design guidance not found in the bare manufacturer datasheet.
直接替换替代料： CL31B155KAPLNNE ——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：
CL31B155KAHVPNE
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KBH4PNE
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KAHNNNE
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
GRM31MR71E155K
✅ 直接替换📋 参考替代料（不在目录中）
CGA5L2X7R1E155K
✅ 直接替换📋 参考替代料（不在目录中）
CL31B155KAPLNNE 最大额定值与电气特性
| Capacitance | 1.5 µF |
| Capacitance Tolerance | ±10% |
| Rated Voltage (DC) | 25 V |
| Dielectric (Temperature Characteristic) | X7R (EIA) |
| 工作温度范围 | -55 °C to +125 °C |
| 封装 / 外壳 | 1206 (3216 Metric) |
| Length | 3.20 mm |
| Width | 1.60 mm |
| 安装类型 | Surface Mount (SMT) |
| Termination Style | Tin (Sn) over Nickel (Ni) barrier |
| Automotive Qualification | AEC-Q200 (PL suffix) |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
| Lead-Free | Yes |
CL31B155KAPLNNE 1206 (3216 metric) 引脚配置指南
CL31B155KAPLNNE（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： CL31B155KAPLNNE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CL31B155KAPLNNE 适用于 6 应用s: Automotive ECU Decoupling, ADAS Sensor Power-Rail Bypass, Powertrain Control Module Filtering, Industrial DC-DC Output Filter, Bulk Decoupling on LED Driver Boards, Automotive Camera Sensor Decoupling.
Automotive ECU Decoupling
The CL31B155KAPLNNE suits automotive ECU decoupling because the AEC-Q200 (PL suffix) qualification confirms it has passed thermal-shock and biased-humidity stress tests required for under-hood electronics. With 1.5 µF nominal and 25 V rating, the part delivers effective bulk-2-decade filtering when paired with smaller 100 nF / 10 nF X7R parts in parallel - the 1206 case provides lower ESR than 0805 equivalents. Designers should account for 30-50% DC-bias capacitance loss at 25 V applied, leaving roughly 1 µF effective for bulk filtering.
推荐
ADAS Sensor Power-Rail Bypass
The CL31B155KAPLNNE fits ADAS sensor power-rail bypass because AEC-Q200 qualification ensures reliability across automotive thermal-shock cycles, while the 1.5 µF 25 V X7R specification supplies effective high-frequency bypass on radar/LiDAR sensor boards. Placed between 5 V / 12 V rails and downstream regulators, the part reduces ripple injected into sensor signal chains. The 1206 footprint matches standard SMT land patterns for sensor PCBs.
推荐
Powertrain Control Module Filtering
The CL31B155KAPLNNE suits powertrain control module filtering because AEC-Q200 qualification (PL suffix) confirms vibration and thermal-shock robustness required for transmission/engine ECUs. With 25 V rating it covers 12 V automotive bus transients within derating guidelines. The 1.5 µF X7R capacitance provides bulk energy storage between supply rails and gate-driver/IGBT stages; expect 30-50% DC-bias loss at full 25 V applied, so use a 1 µF effective budget.
推荐
Industrial DC-DC Output Filter
The CL31B155KAPLNNE works in industrial DC-DC output filters because the AEC-Q200 stress testing exceeds industrial-grade reliability requirements, providing extra margin for harsh factory environments. With 1.5 µF 25 V X7R specification and 1206 footprint, the part fits 24 V → 5 V / 12 V → 3.3 V buck-converter output filter designs as the bulk filter capacitor. AEC-Q200 qualification provides extra margin for long-life industrial installations (10+ years).
推荐
Bulk Decoupling on LED Driver Boards
The CL31B155KAPLNNE suits bulk decoupling on LED driver boards because the 1.5 µF 25 V X7R specification handles 12-24 V LED-driver input/output bulk filtering with stable mid-K capacitance. AEC-Q200 qualification provides extra margin for automotive LED applications (DRL, headlights). The 1206 footprint provides lower ESR than 0805, supporting high-frequency switching-converter output ripple suppression.
推荐
Automotive Camera Sensor Decoupling
The CL31B155KAPLNNE fits automotive camera sensor decoupling because AEC-Q200 (PL suffix) qualification ensures reliability across temperature and vibration stress required for front/rear-view camera modules. The 1.5 µF 25 V X7R 1206 MLCC provides bulk filtering on PoC (Power-over-Coax) and serializer/deserializer power rails. The 1206 footprint is small enough for compact camera PCB designs while still providing adequate capacitance.
推荐
推荐产品汇总
工程参考数据： CL31B155KAPLNNE ——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 | CL31B155KAHVPNE | CL31B155KBH4PNE | GRM31MR71E155K | CGA5L2X7R1E155K |
|---|---|---|---|---|---|
| Package | 1206 (3216 Metric) | 1206 (3216 Metric) - same | 1206 (3216 Metric) - same | 1206 (3216 Metric) - same | 1206 (3216 Metric) - same |
| Brand | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Samsung Electro-Mechanics | Murata | TDK |
| Capacitance | 1.5 µF | 1.5 µF | 1.5 µF | 1.5 µF | 1.5 µF |
| Capacitance Tolerance | ±10% (K) | ±10% (K) | ±10% (K) | ±10% (K) | ±10% (K) |
| Rated Voltage | 25 V | 25 V | 25 V | 25 V | 25 V |
| Dielectric | X7R | X7R | X7R | X7R | X7R |
| Automotive Grade | AEC-Q200 (PL suffix) | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 |
| Operating Temperature | -55 °C to +125 °C | -55 °C to +125 °C | -55 °C to +125 °C | -55 °C to +125 °C | -55 °C to +125 °C |
关键差异点
- PL suffix confirms AEC-Q200 automotive qualification （对比 CL31B155KAHVPNE)
- Same Samsung 1206 X7R family as commercial-grade siblings （对比 CL31B155KBH4PNE)
- Cross-brand drop-in availability （对比 GRM31MR71E155K (Murata))
设计说明
Estimated: X7R MLCCs exhibit DC-bias capacitance loss, and at 25 V applied the CL31B155KAPLNNE 1.5 µF nominal drops to roughly 0.75-1.0 µF effective capacitance. For bulk-2-decade filtering designs, use a 1 µF effective capacitance budget rather than the 1.5 µF nominal to avoid undershoot surprises. Always consult the AVCC (Applied Voltage Capacitance Change) curve in the manufacturer datasheet for the exact derating profile at your applied DC voltage.
Place the CL31B155KAPLNNE as close to the IC power pin as physically possible to minimise trace inductance. Use wide power-plane vias from the pad to the inner GND/power planes, and pair with smaller 100 nF / 10 nF X7R capacitors in parallel for high-frequency decoupling. The 1206 footprint supports standard reflow profiles per J-STD J-020 (245 °C peak).
The CL31B155KAPLNNE operates across -55 °C to +125 °C and is qualified to AEC-Q200 thermal-shock standards; however, sustained operation near the 125 °C upper limit accelerates aging. For under-hood automotive applications where ambient temperatures may exceed 105 °C, verify the actual operating temperature at the PCB location (not the under-hood ambient) using a thermocouple.
Use the CL31B155KAPLNNE on 12 V or 24 V automotive bus rails within the 25 V rating, leaving a derating margin of at least 20% (target ≤20 V applied) for transient reliability. For 5 V and lower logic rails, the 25 V rating is overkill - consider a lower-voltage (10 V or 16 V) X7R part for cost savings. AEC-Q200 qualification still applies across all voltage ratings in this family.
合规信息
AEC-Q200 qualified per PL suffix in Samsung part-number scheme. RoHS compliant per Samsung product page. REACH compliant. AEC-Q100 is for ICs, not MLCCs - AEC-Q200 is the correct automotive passive-component standard.