EEE-FKV121XSP - 120µF 35V SMD Aluminum Electrolytic | Panasonic
料号： EEE-FKV121XSP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.55 | $0.55 |
| 10 | $0.48 | $4.80 |
| 100 | $0.36 | $36.00 |
| 500 | $0.28 | $140.00 |
| 1,000 | $0.22 | $220.00 |
EEE-FKV121XSP 概述
An aluminum electrolytic capacitor is a polarized passive component that stores charge through an electrochemical interface between an etched aluminum anode foil, a paper separator impregnated with electrolyte, and a cathode foil. Compared to ceramic or film capacitors, aluminum electrolytics offer very high capacitance density (CV) per unit volume at low cost, which is why they remain the dominant choice for bulk filtering, decoupling, and energy storage in the 10 µF–10,000 µF range above 10 V working voltage. Their trade-offs include higher ESR, polarized operation, and limited high-frequency performance.
Key features of the EEE-FKV121XSP include 35 V rated DC working voltage (with appropriate derating to 28–32 V in continuous operation), 120 µF nominal capacitance, 0.34 ohm ESR at 100 kHz, and 2,000 hours endurance at 105 °C. The 6.3 mm × 7.7 mm radial-can SMD form factor makes it compatible with high-density PCB layouts where vertical mount height is constrained. The AEC-Q200 qualification means the part is qualified against automotive stress tests for vibration, thermal shock, and bias humidity, while reflow-only compatibility simplifies reflow soldering onto standard surface-mount pads.
Typical applications for the EEE-FKV121XSP include automotive infotainment power rails, ECU 3.3 V/5 V post-DCDC decoupling, industrial 24 V bus hold-up capacitors, and as a switching valve in power modules. The unique features of this part include a low-cost reflow-only land pattern that uses industry-standard reflow connections and supports surface-mount reflow with no need for through-hole lead bending.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternative cross-references from Panasonic's FK-series family, and practical design notes for thermal and ripple-current derating not consolidated on the manufacturer datasheet.
直接替换替代料： EEE-FKV121XSP ——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：
EEE-FK1V221GP
✅ 直接替换📋 参考替代料（不在目录中）
EEE-FN1E470R
✅ 直接替换📋 参考替代料（不在目录中）
EEE-FKV121XSP
✅ 直接替换✓ 有现货
$0.22 / 个
查看数据手册 →EEE-FKV121XSP 最大额定值与电气特性
| Manufacturer Series | FK-V Series |
| Capacitance | 120 µF |
| Capacitance Tolerance | ±20% |
| Rated Voltage (DC) | 35 V |
| 工作温度范围 | -55 °C to +105 °C |
| ESR (at 100 kHz) | 0.34 Ω |
| Ripple Current (at 105 °C, 100 kHz) | 280 mA |
| Load Life (at 105 °C) | 2,000 hours |
| 封装 / 外壳 | Radial, Can - SMD, 6.3 × 7.7 mm |
| 安装类型 | Surface Mount (reflow-only) |
| Diameter | 6.3 mm |
| Height | 7.7 mm |
| Dielectric Material | Aluminum Electrolytic |
| Polarity | Polar |
| AEC-Q200 Qualified | Yes |
| RoHS 状态 | Compliant |
| Packaging Method | Tape & Reel |
EEE-FKV121XSP 引脚配置
| 引脚 1 | Anode (+) — Positive terminal (polarized) |
| 引脚 2 | Cathode (-) — Negative terminal, marked with stripe on case top |
典型应用
EEE-FKV121XSP 适用于 6 应用s: Automotive 12V Power Rail Filtering, Industrial 24V Bus Hold-Up Capacitor, LED Driver Output Bulk Capacitor, ECU Decoupling for 3.3V / 5V Rails, Switching Power Module Input Filter, Survival Capacitor for Power Module Back-Up.
Automotive 12V Power Rail Filtering
The EEE-FKV121XSP is well-matched to 12V automotive power rails because of its 35 V rated DC working voltage, which gives ample derating headroom against load-dump transients, and its AEC-Q200 qualification, which confirms reliability under vibration and thermal stress. With 120 µF of capacitance and 0.34 ohm ESR at 100 kHz, it suppresses ripple from downstream buck converters and absorbs injected current during cold-crank events. Place it at the input of the post-DCDC adapter at each IC supply pin with a parallel 1 µF X7R ceramic for high-frequency bypass; this combination handles the bulk storage needed to ride through 3-5 ms cold-crank dips while filtering switching noise from 100 kHz DC-DC nodes.
推荐
Industrial 24V Bus Hold-Up Capacitor
Industrial PLCs and factory automation modules operating from 24V bus rails often require bulk capacitance to ride through short interruptions, and the EEE-FKV121XSP fits this role with 35 V working voltage that survives common-mode transients and 120 µF storage that supports tens of milliseconds of hold-up time. Its 0.34 ohm ESR at 100 kHz dissipates less heat than older aluminum electrolytic generations, while AEC-Q200 qualification provides extra confidence in factory-floor thermal cycling. Mount the part at the input of an isolated DC-DC module feeding PLC logic; pair it with a TVS clamp such as SMBJ33A for surge suppression, and verify hold-up time against the worst-case bus dip using the I·t equation for the downstream load.
推荐
LED Driver Output Bulk Capacitor
LED lighting drivers for industrial and commercial fixtures require bulk storage at the output stage to smooth rectified current and reduce flicker, and the EEE-FKV121XSP serves this role with 120 µF storage and 280 mA ripple current handling at 105 °C. The 35 V rating supports common 24V LED strings with substantial headroom against inductive kick from the LED load. Place the capacitor directly across the output of the LED driver bridge rectifier; this topology leverages the part's low 100 kHz ESR to attenuate the 100 Hz ripple from AC rectification and supports flicker-free constant-current operation.
推荐
ECU Decoupling for 3.3V / 5V Rails
Electronic control units (ECUs) feeding 3.3V and 5V logic require bulk decoupling close to the MCU and CAN transceivers, and the EEE-FKV121XSP provides this bulk storage with 120 µF and a 6.3 × 7.7 mm radial-can SMD footprint that fits the compact ECU enclosure. The 35 V working voltage far exceeds the 5V rail, providing huge derating margin that extends part life beyond the 2,000-hour 105 °C rating. Place the part between the LDO output and the MCU supply pin, with a 100 nF X7R in parallel for high-frequency decoupling; the bulk cap absorbs the inrush when the MCU wakes from sleep, reducing voltage sag on the LDO output.
推荐
Switching Power Module Input Filter
Compact 24V-to-5V switching power modules used in industrial controllers require input bulk capacitance to suppress reflected ripple current, and the EEE-FKV121XSP is engineered for this function with 0.34 ohm ESR at 100 kHz that bounds the input ripple amplitude. The 120 µF storage supports 50-100 kHz buck topologies with sufficient energy transfer per switching cycle, while AEC-Q200 qualification supports automotive power module variants. Mount the part directly at the input pin of the buck IC; derate the voltage to 70% of 35 V (about 24 V continuous) to maximize the part's lifetime, and add a 1 µF X7R ceramic in parallel for HF ripple bypass.
推荐
Survival Capacitor for Power Module Back-Up
Some industrial power modules require a short-term hold-up capacitor that survives brief line drops, and the EEE-FKV121XSP fills this role with 120 µF storage that supports 5-10 ms hold-up at moderate load currents. The 6.3 × 7.7 mm radial-can SMD package enables vertical-mount density in compact module enclosures, and AEC-Q200 qualification ensures survival under field-installed thermal cycling. Place the part across the input of the hold-up DC-DC; calculate hold-up time using T = C × ΔV / I_Load, and verify that 35 V rating exceeds the maximum bus voltage including transients to prevent catastrophic failure.
推荐
推荐产品汇总
工程参考数据： EEE-FKV121XSP ——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 | EEE-FK1V221GP | EEE-FN1E470R |
|---|---|---|---|
| Brand | Panasonic | Panasonic | Panasonic |
| Package | Radial, Can - SMD, 6.3 × 7.7 mm | Radial, Can - SMD, 6.3 × 7.7 mm - same | Radial, Can - SMD, 6.3 × 7.7 mm - same |
| Capacitance | 120 µF | 220 µF | 47 µF |
| Rated Voltage (DC) | 35 V | 35 V | 25 V |
| Capacitance Tolerance | ±20% | ±20% | ±20% |
| ESR at 100 kHz | 0.34 Ω | 0.18 Ω | 0.36 Ω |
| Ripple Current (105 °C, 100 kHz) | 280 mA | 450 mA | 160 mA |
| Load Life (at 105 °C) | 2,000 hours | 2,000 hours | 2,000 hours |
| AEC-Q200 Qualified | Yes | Yes | Yes |
关键差异点
- AEC-Q200 qualified at 35 V / 120 µF （对比 EEE-FN1E470R)
- Higher capacitance density at same voltage class （对比 EEE-FK1V221GP)
设计说明
Ripple-current heating is the dominant wear mechanism for aluminum electrolytic capacitors. The EEE-FKV121XSP is rated 280 mA ripple at 105 °C; if used at a lower temperature, the ripple capability rises by approximately 5-10% per 10 °C of temperature margin. Estimated: at 85 °C ambient, the allowable ripple climbs to ~310 mA. Always verify the actual capacitor case temperature stays below 105 °C under worst-case ripple loading, since each 10 °C rise above 105 °C roughly halves the 2,000-hour load life.
For the 6.3 × 7.7 mm radial-can SMD land pattern, follow Panasonic's recommended pad geometry in the FK-V series datasheet to ensure adequate solder fillet formation during reflow. Use a land pattern with two terminals wider than the can diameter plus a flat top surface; the part is reflow-only and should never be wave-soldered, since the thermal shock from wave-solder contact will damage the rubber seal and degrade endurance.
Do not operate the EEE-FKV121XSP below 0 °C in applications requiring full capacitance - aluminum electrolytic capacitance falls sharply at low temperature due to electrolyte conductivity drop (roughly -40% at -55 °C). For low-temperature filtering, parallel a ceramic capacitor to compensate for the capacitance derating. Also note that reverse-polarity connection will damage the dielectric oxide layer and can lead to venting; always observe polarity markings on the can top during placement.
合规信息
RoHS compliant per Panasonic product documentation. AEC-Q200 qualified (not AEC-Q100). Lead-free reflow-only.
