25ZLH1000MEFC10X23 - 1000µF 25V Low-Impedance Radial Electrolytic | Rubycon
MPN: 25ZLH1000MEFC10X23 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.34 | $3.40 |
| 100 | $0.25 | $25.00 |
| 500 | $0.19 | $95.00 |
| 1,000 | $0.15 | $150.00 |
25ZLH1000MEFC10X23 Overview
An aluminum electrolytic capacitor is a polarized passive component that uses an etched aluminum anode foil, a paper separator saturated with electrolyte, and a cathode foil to form a non-solid electrolytic dielectric. The ZLH series specifically targets low-impedance, high-ripple-current applications such as switch-mode power supply (SMPS) output filters, DC-DC converter input/output reservoirs, and audio amplifier power-rail bypass. In the broader taxonomy, electrolytic capacitors sit below ceramic, film, and tantalum within the capacitor family, and the ZLH series competes with Nichicon HE and Panasonic FR-series parts in the same 10×23 mm footprint.
Key features include a ±20 % capacitance tolerance at 120 Hz / 20 °C, a 25 V rated DC working voltage with substantial de-rating headroom to 35 V surge, and an impedance specification that drops by a factor of roughly two to four relative to the older ZL series at 100 kHz. The ZLH series also offers a 1.0 µA maximum leakage current after 2 minutes at 25 °C, which is competitive within its voltage class. Endurance is 10000 hours @ 105 °C with rated voltage and ripple current applied.
Typical applications include the output filter capacitor following a 12 V to 5 V buck converter in industrial equipment, where its 2250 mA ripple rating and 10×23 mm footprint absorb the switching ripple without overheating. It is also commonly used as a bulk reservoir capacitor on the input side of multi-rail supplies and in audio amplifier power sections. When designing with this part, ensure that the ripple current does not exceed 2250 mA at 100 kHz and 105 °C ambient, and that the lead spacing (5 mm) matches the PCB pad layout.
Drop-in alternatives for 25ZLH1000MEFC10X23 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
25ZLK1000M10X25
✅ Drop-In📋 Reference alternative (not in catalog)
ECA-1EHG102
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFR1E102LB
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFR1V102
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
25ZLJ1000M10X20
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFR1E102L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
25ZLH1000MEFC10X23 Maximum Ratings & Electrical Characteristics
| Capacitance | 1000 µF |
| Capacitance Tolerance | ±20% (at 120 Hz, 20 °C) |
| Rated Voltage (DC) | 25 V |
| Surge Voltage (DC) | 32 V |
| Ripple Current | 2250 mA at 105 °C, 100 kHz |
| Load Life | 10000 hours at 105 °C |
| Operating Temperature | -40 °C to +105 °C |
| Leakage Current Max | 1.0 mA (after 2 minutes, 25 °C) |
| Case Size (D × L) | 10 mm × 23 mm |
| Lead Spacing | 5 mm |
| Lead Diameter | 0.6 mm nominal |
| Mounting Type | Through-hole radial leaded |
| Package | Radial can, PET sleeve insulated |
| Series | ZLH (Low Impedance) |
| RoHS Status | Compliant |
25ZLH1000MEFC10X23 Pin Configuration
| Pin 1 | Anode (+) — Positive terminal (longer lead); connects to the higher-voltage side of the circuit |
| Pin 2 | Cathode (-) — Negative terminal (shorter lead); connects to ground; stripe on sleeve indicates polarity |
Typical Applications
25ZLH1000MEFC10X23 is suitable for 6 applications: Switching Power Supply Output Filter, DC-DC Converter Output Reservoir, Audio Amplifier Power Supply Bypass, Industrial SMPS Input Bulk Capacitor, Motor Drive DC Bus Filter, Multi-Rail Power Distribution Filter.
Switching Power Supply Output Filter
The 25ZLH1000MEFC10X23 is placed at the output of a buck or forward converter to absorb switching ripple at the converter's switching frequency and its harmonics. Its 2250 mA ripple current rating at 100 kHz / 105 °C means it can absorb the high-frequency ripple produced by a 5 V / 3 A synchronous buck stage without overheating. The 1000 µF bulk capacitance reduces load-transient undershoot and holds up Vout during load steps. Compared to a ZLJ-series part, the ZLH offers 10000 h endurance for industrial-grade MTBF targets.
Recommended
DC-DC Converter Output Reservoir
Used as the bulk output reservoir on 12 V-to-5 V or 24 V-to-5 V DC-DC modules feeding downstream digital ICs. The 1000 µF / 25 V rating fits 5 V output rails with substantial ripple headroom, while the 10×23 mm radial can is compatible with through-hole DC-DC brick layouts. ZLH-series low impedance reduces AC ripple more effectively than standard ZL series at 100 kHz, improving the noise floor seen by downstream FPGAs and processors. With 10000 h endurance at 105 °C, it supports long-life industrial designs.
Recommended
Audio Amplifier Power Supply Bypass
On the main HT rail or the bulk filter of an audio power amplifier, the 25ZLH1000MEFC10X23 supplies instantaneous charge during large bass transients. The 1000 µF capacitance with low ZLH impedance maintains a flat supply rail during heavy bass notes and prevents amplifier clipping. The 5 mm lead spacing fits standard TO-220-style PCBs and Hi-Fi through-hole layouts. Compared to a 2200 µF / 25 V alternative, the 1000 µF ZLH occupies less PCB area while preserving ripple headroom.
Recommended
Industrial SMPS Input Bulk Capacitor
Placed on the 25 V rail following a rectifier bridge in industrial SMPS front ends, this part smooths the 100 Hz / 120 Hz ripple on the input side and handles 100 kHz switching ripple downstream. The 25 V rating and 32 V surge rating tolerate voltage transients in industrial environments, while 10000 h endurance at 105 °C fits long-life factory equipment. The radial 10×23 mm can mounts on standard 5 mm-pitch PCB pads.
Recommended
Motor Drive DC Bus Filter
On the DC bus of a small brushed or BLDC motor drive, the 25ZLH1000MEFC10X23 absorbs regenerative kick-back energy and stabilizes the supply rail during PWM switching. The 2250 mA ripple rating handles the high-frequency current ripple produced by a 25 kHz PWM stage. The 10×23 mm radial footprint mounts easily on a TO-47-style drive board, and the 105 °C temperature rating fits enclosed motor housings.
Recommended
Multi-Rail Power Distribution Filter
On each output rail of a multi-rail SMPS (3.3 V, 5 V, 12 V), this part stabilizes the rail against load transients and absorbs switching ripple. With 1000 µF / 25 V per rail, designers can standardize on a single SKU across multiple rails. The 5 mm lead pitch is compatible with standard through-hole power-distribution layouts, and the 10000 h endurance fits long-life telecom equipment.
Recommended
Recommended Products Summary
Engineering reference data for 25ZLH1000MEFC10X23 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 25ZLK1000M10X25 | ECA-1EHG102 | EEUFR1E102LB | 25ZLJ1000M10X20 |
|---|---|---|---|---|---|
| Package | Radial 10x23 mm | Radial 10x25 mm - same family | Radial 10x23 mm - same | Radial 10x25 mm - same family | Radial 10x20 mm - same family |
| Brand | Rubycon | Rubycon | Panasonic | Panasonic | Rubycon |
| Capacitance | 1000 µF | 1000 µF | 1000 µF | 1000 µF | 1000 µF |
| Rated Voltage | 25 V | 25 V | 25 V | 25 V | 25 V |
| Case Size (DxL) | 10 x 23 mm | 10 x 25 mm | 10 x 23 mm | 10 x 25 mm | 10 x 20 mm |
| Lead Spacing | 5 mm | 5 mm | 5 mm | 5 mm | 5 mm |
| Series / Family | ZLH (Low Impedance) | ZLK | NHG | FR | ZLJ |
Key Differentiators
- Longest endurance in the ZLH 25 V / 1000 µF class (vs 25ZLK1000M10X25)
- Lower impedance than standard ZL series (vs ECA-1EHG102)
- Smaller case size than comparable 5000 h alternatives (vs 25ZLJ1000M10X20)
Design Notes
Ripple current derating is critical for the ZLH series. The 2250 mA rating applies at 105 °C and 100 kHz, and must be derated at higher temperatures or lower frequencies. Estimated: at 1 kHz ripple the effective ripple current is roughly 60-70 % of the 100 kHz rating. Mount with adequate airflow or distance from hot components to keep the case within rated temperature limits.
Reverse polarity will destroy the capacitor within seconds. The stripe on the PET sleeve marks the negative (cathode) lead; the longer lead is the positive (anode). Do not assume lead length encodes polarity on surface-mount variants. Always verify the polarity marking against the circuit schematic before powering up. Apply a 25 % or greater voltage derating for longest life (operate at 20 V max for a 25 V rated part).
Mount the capacitor with the shortest possible lead length to PCB pads to minimize series inductance, which is critical for high-frequency switching ripple. Maintain clearance around the can for cooling airflow. For switching power supply output filters, place this bulk capacitor close to the rectifier output with a ceramic 0.1 µF / 100 V MLCC in parallel for high-frequency bypass above the electrolytic's impedance curve.
Compliance Information
RoHS compliant per Rubycon product page. AEC-Q100 not applicable to passive capacitors. Lead-free construction confirmed; halogen-free status not explicitly stated in the verified web data.
