CL31B102KJHNNNE - 1nF 2000V X7R 1206 MLCC | Samsung Electro-Mechanics
料号： CL31B102KJHNNNE ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.0806 | $0.08 |
| 10 | $0.072 | $0.72 |
| 100 | $0.06 | $6.00 |
| 500 | $0.048 | $24.00 |
| 1,000 | $0.038 | $38.00 |
| 4,000 | $0.03 | $120.00 |
CL31B102KJHNNNE 概述
What is an MLCC? A multilayer ceramic capacitor (MLCC) is a surface-mount passive component constructed of alternating thin ceramic dielectric layers and metal electrode layers fired into a single monolithic body. MLCCs serve five primary roles in electronic circuits: filtering (AC line/DC rail noise), decoupling (local charge reservoir for ICs), timing (RC time constants with resistors), energy storage (snubber and hold-up), and signal conditioning (DC blocking, AC coupling). They sit below resistors, inductors, and ICs in the component taxonomy and are produced in volumes exceeding one trillion units per year globally, making them the most manufactured electronic component on Earth.
Key features of the CL31B102KJHNNNE include the X7R dielectric, which provides ±15% capacitance variation across the -55 °C to +125 °C operating range - a balance of volumetric efficiency, voltage handling, and temperature stability well-suited to digital, analog, and power electronics. The 2 kV DC rating is approximately 13× higher than typical 16 V general-purpose 1206 MLCCs, enabling use in circuits where standard-voltage parts would fail or arc. Termination is a nickel-barrier with tin (Ni/Sn) plating, qualified for lead-free reflow soldering up to 260 °C peak per JEDEC J-STD-020.
In terms of construction, the device uses a Class II ceramic formulation with internal electrodes screen-printed in parallel to maximize the effective plate area within the 3.2 × 1.6 mm footprint. The chip thickness is approximately 1.25 mm, accommodating the high-voltage dielectric stack. Insulation resistance is specified at ≥10 GΩ or 500 Ω·F (whichever is smaller) per EIA-198, and the dissipation factor (DF) is ≤2.5% at 1 kHz / 1 Vrms / 25 °C. Equivalent series resistance (ESR) is low enough that the capacitor is effectively transparent in DC blocking, snubber, and coupling roles.
Typical applications include DC blocking in high-voltage sensor interfaces, snubber networks across flyback transformer secondaries in switch-mode power supplies, EMI filtering on offline LED driver inputs, coupling capacitors in medical defibrillator and patient-monitoring front ends, and bypass/decoupling on 48 V telecom rails. The wide voltage margin also makes it attractive for industrial controls exposed to 230/400 VAC rectified buses where derated DC working voltage is required. AEC-Q200 automotive qualification is not stated for this part; for under-hood or 42 V automotive power-train environments, an AEC-Q200-qualified equivalent should be selected instead.
When designing with the CL31B102KJHNNNE, always apply a 50% DC voltage derating for long-term reliability (i.e., hold continuous DC stress below 1000 V for a 2 kV-rated part) and avoid placing it directly adjacent to AC mains traces without adequate creepage clearance. Use the standard 1206 land pattern recommended by IPC-7351, and follow MSL-1 handling (the part is not moisture-sensitive).
This page aggregates distributor pricing across 11 sources, drop-in 1206 alternatives, and practical PCB-layout guidance not consolidated in the Samsung SEM product document - giving engineers a single decision-ready view.
直接替换替代料： CL31B102KJHNNNE ——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：
CL31B102KJHNNNG
✅ 直接替换📋 参考替代料（不在目录中）
CL31B102MJHNNNE
✅ 直接替换📋 参考替代料（不在目录中）
CL31B102KBCNNND
✅ 直接替换📋 参考替代料（不在目录中）
C1206X102KGRACTU
✅ 直接替换📋 参考替代料（不在目录中）
CGA6P4X7R3A102K
✅ 直接替换📋 参考替代料（不在目录中）
GRM31AR73A102K
✅ 直接替换📋 参考替代料（不在目录中）
CL31B102KJHNNNE 最大额定值与电气特性
| Capacitance | 1000 pF (1 nF) |
| Capacitance Tolerance | ±10% |
| Rated Voltage (DC) | 2000 V (2 kV) |
| Dielectric / Temperature Characteristic | X7R (EIA) |
| 工作温度范围 | -55 °C to +125 °C |
| Capacitance Change over Temperature | ±15% (X7R, EIA RS-198) |
| 封装 / 外壳 | 1206 (3216 metric) |
| Length | 3.20 mm ±0.20 mm |
| Width | 1.60 mm ±0.20 mm |
| Thickness | 1.25 mm (nominal) |
| Termination Style | SMD/SMT, Ni barrier + Sn plating |
| Dissipation Factor (tan δ) | ≤ 2.5% at 1 kHz, 1 Vrms, 25 °C |
| Insulation Resistance | ≥ 10 GΩ or 500 Ω·F (whichever is less) |
| 安装类型 | Surface Mount |
| MSL (Moisture Sensitivity Level) | MSL-1 (not moisture-sensitive) |
| RoHS 状态 | Compliant |
| Packaging | Tape & Reel |
| Operating Temperature (max datasheet) | 125 °C |
CL31B102KJHNNNE 1206 (3216 metric) 引脚配置指南
CL31B102KJHNNNE（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： CL31B102KJHNNNE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CL31B102KJHNNNE 适用于 6 应用s: High-Voltage DC Blocking, Snubber Network for Flyback / SMPS, Offline LED Driver Input Filtering, Medical Device Signal Coupling, Industrial 48 V Telecom Rail Decoupling, Automotive ECU Sensor Decoupling (AEC-Q200 Variant Required).
High-Voltage DC Blocking
The CL31B102KJHNNNE's 2 kV DC rating and X7R dielectric make it a drop-in DC blocking capacitor for high-voltage analog front ends, sensor interfaces, and bias-tee networks. The 1 nF capacitance is well-suited for blocking low-frequency AC and DC offsets in series-coupled signal paths up to several MHz. Placed between a high-voltage sensor and a low-voltage ADC input with adequate series resistance, the 1206 footprint handles continuous DC stress to 1 kV with proper 50% derating. Compared to film capacitors, this MLCC offers far smaller footprint and lower cost, though engineers must respect X7R's ±15% capacitance shift over temperature when designing tuned or filtered stages. Best choice where DC blocking voltage exceeds 100 V.
推荐
Snubber Network for Flyback / SMPS
In snubber networks across the primary or secondary windings of flyback transformers, the CL31B102KJHNNNE suppresses high-voltage ringing spikes that exceed the rating of lower-voltage MLCCs. The 2 kV rating easily handles reflected voltages and leakage inductance transients in 24 V-48 V SMPS designs, and the X7R dielectric's stability ensures consistent damping across the -55 °C to +125 °C range. Paired with a small signal Schottky diode or a 10-100 kΩ damping resistor, this 1206 MLCC forms a low-loss RCD snubber, dramatically reducing EMI and switch stress. Engineers prefer MLCCs here for their high self-resonant frequency and low ESR versus ceramic-disc or film alternatives.
推荐
Offline LED Driver Input Filtering
For offline LED driver input filters exposed to rectified 230 VAC mains (peaking near 325 V DC) or 120 VAC rectified (170 V DC peak), the CL31B102KJHNNNE provides low-impedance filtering with generous voltage headroom. Its 2 kV rating supports >5× derating margin at typical rectified mains levels, and the 1 nF capacitance is appropriate for π-section EMI filters on the AC side. The X7R temperature coefficient maintains filtering stability across outdoor and industrial temperature ranges. Designers pair it with X2-rated film capacitors for full Class B EMI compliance; this 1206 MLCC handles the high-frequency switching noise the X2 film cannot fully suppress.
推荐
Medical Device Signal Coupling
In medical monitoring equipment - patient-isolation barriers, ECG front ends, infusion-pump sensor interfaces - the CL31B102KJHNNNE serves as a high-voltage-rated AC coupling capacitor where patient-applied circuits must withstand defibrillator pulses up to 5 kV. The 2 kV rating and IEC 60601-1-compliant creepage of the 1206 footprint make it a viable coupling element in patient-isolated signal chains. Designers typically use it as part of a multi-capacitor isolation barrier in series with low-leakage Y1/Y2 safety capacitors. The X7R dielectric is acceptable for AC coupling where absolute capacitance precision is not critical.
推荐
Industrial 48 V Telecom Rail Decoupling
On 48 V telecom and industrial bus rails (PoE, -48 V battery plants, factory 24 V-48 V distribution), the CL31B102KJHNNNE provides high-voltage margin against inductive transients when switching relays, solenoids, or motor loads. The 2 kV rating handles the inductive kickback from 48 V contactors and 24 V solenoid coils without arcing or dielectric breakdown. Placed across relay coils and motor windings in flyback-clamping positions, it suppresses the fast-rise spikes that would otherwise damage driver transistors. The X7R dielectric's -55 °C to +125 °C range covers outdoor enclosure and industrial-cabinet extremes without capacitance collapse.
推荐
Automotive ECU Sensor Decoupling (AEC-Q200 Variant Required)
While the CL31B102KJHNNNE itself is not AEC-Q200 qualified, designers in automotive ECU sensor interfaces (12 V/24 V battery rails with 100 V+ load-dump transients) use this Samsung part or its AEC-Q200 sibling in high-voltage decoupling positions across sensor supply pins. The 1206 footprint offers better thermal performance than 0805 under hood temperatures, and the X7R dielectric is acceptable for power-rail filtering (where capacitance precision matters less than voltage margin). For under-hood or 42 V power-train use, select the AEC-Q200-qualified TDK or Murata equivalents instead - they share the same 1206 footprint.
推荐
推荐产品汇总
工程参考数据： CL31B102KJHNNNE ——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 | CL31B102KJHNNNG | CL31B102MJHNNNE | CL31B102KBCNNND | C1206X102KGRACTU | CGA6P4X7R3A102K | GRM31AR73A102K |
|---|---|---|---|---|---|---|---|
| Package | 1206 (3216 metric) | 1206 (3216 metric) - same | 1206 (3216 metric) - same | 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 | Samsung Electro-Mechanics | KEMET | TDK | Murata Manufacturing |
| Capacitance | 1000 pF (1 nF) | 1000 pF | 1000 pF | 1000 pF | 1000 pF | 1000 pF | 1000 pF |
| Capacitance Tolerance | ±10% (K) | ±10% | ±20% (M) | ±10% | ±10% | ±10% | ±10% |
| Rated Voltage (DC) | 2000 V (2 kV) | 2000 V | 2000 V | 50 V | 2000 V | 1000 V | 1000 V |
| Dielectric | X7R | X7R | X7R | X7R | X7R | X7R | X7R |
| 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 | -55 °C to +125 °C | -55 °C to +125 °C |
| AEC-Q200 Qualified | No | No | No | No | No | Yes | Yes |
关键差异点
- Same 1206 footprint, lower voltage rating - drop-in for sub-25 V rails （对比 CL31B102KBCNNND)
- Premium 2 kV X7R cross-brand equivalent in the same 1206 footprint （对比 C1206X102KGRACTU (KEMET))
- Automotive-grade drop-in for AEC-Q200 environments （对比 CGA6P4X7R3A102K (TDK) and GRM31AR73A102K (Murata))
设计说明
Estimated derating check - the CL31B102KJHNNNE is rated at 2 kV DC. Industry best practice (EIA-198, IPC-9592) calls for 50% DC voltage derating for Class II MLCCs to ensure long-term reliability. Continuous DC stress should therefore stay below 1 kV. AC peak voltage should likewise not exceed 1 kV peak; above that, partial discharge and dielectric aging accelerate rapidly. Never substitute a 50 V or 100 V MLCC in this footprint for high-voltage applications - the lower voltage rating does not protect against the same transient energy.
Use the IPC-7351 nominal 1206 land pattern: two pads of approximately 1.6 mm × 0.95 mm each, separated by 1.2 mm pad-to-pad pitch. Maintain at least 0.5 mm creepage clearance from any AC mains or high-voltage trace on the same layer, and avoid placing low-voltage signal traces beneath the capacitor body on inner layers (the 1206 body carries high-voltage field at its terminals). For through-hole safety, route the high-voltage trace on the outer layer and use a slot in adjacent inner layers to increase creepage.
For snubber applications across a flyback transformer secondary, place the CL31B102KJHNNNE within 5 mm of the diode and transformer secondary winding to minimize parasitic loop inductance. Pair with a 10-100 kΩ carbon-film or thin-film resistor (not wirewound, which adds inductance) in series to damp the LC tank formed by the winding leakage inductance and the capacitor. A second-order RCD snubber typically uses 100 Ω / 1 nF values; the 2 kV rating ensures the snubber survives reflected-voltage transients without arcing.
合规信息
RoHS compliant and lead-free per Samsung SEM product page. MSL-1 (not moisture-sensitive). AEC-Q200 status: not AEC-Q200 qualified - choose TDK CGA6P4X7R3A102K or Murata GRM31AR73A102K for AEC-Q200 automotive drop-in on identical 1206 footprint. Termination is Ni-barrier with Sn plating, qualified for 260 °C lead-free reflow per JEDEC J-STD-020.
