25ZLH1000MEFC10X23 Datasheet and Pinout: Specs for Design and Sourcing
25ZLH1000MEFC10X23 datasheet essentials, pinout overview, key specs, and design/sourcing checks for engineers and buyers. Request a quote on IC-Online.
The Quiet Shift to 10,000-Hour Aluminium Electrolytics and Why the 25ZLH1000MEFC10X23 Fits the Bill
Power supply designers and procurement buyers alike are moving away from 85°C aluminium electrolytic capacitors that barely survive a couple of years in compact, hot-running equipment. The push for smaller form‑factors in LED drivers, USB‑C chargers, and industrial power modules means capacitors sit closer to heatsinks and absorb higher ambient temperatures. A 5,000‑hour part at 85°C simply won’t last long enough, and selecting an over‑specified wet tantalum or polymer can bloat the bill of materials. The sweet spot is a radial aluminium electrolytic that delivers 10,000 hours at 105°C without forcing a larger can—and that’s precisely where the 25ZLH1000MEFC10X23 from Rubycon enters the conversation.
Rubycon’s ZLH series has cemented a reputation for high‑ripple, long‑life capacitors in a standard radial package. The 25ZLH1000MEFC10X23 packs 1000 µF at 25 V into a slim 10 mm × 23 mm can (DigiKey product overview) and carries a 10,000‑hour endurance rating at the full 105°C ripple current—a genuine upgrade for designs that previously relied on shorter‑lived 25 V capacitors. Engineers searching for a datasheet‑driven selection will find that the 25ZLH1000MEFC10X23 balances cost, lifetime, and board real‑estate without requiring exotic polymer replacements. For buyers, it’s a volume‑friendly passive that appears across multiple authorised and catalogue distributors, so verifying allocation is straightforward once you know where to look.
Reading the 25ZLH1000MEFC10X23 Datasheet: Key Specs, Pinout, and the 105°C Lifespan
Decoding the 25ZLH1000MEFC10X23 datasheet reveals the performance envelope that makes it a go‑to in power supply output filtering. This is a radial‑leaded, non‑solid aluminium electrolytic capacitor built on Rubycon’s ZLH electrolyte system. The part number itself follows a readable manufacturer pattern: “25” denotes the rated voltage (25 Vdc), “ZLH” the series, “1000” the capacitance in microfarads, and “MEFC10X23” indicates a 10 mm diameter can with a 23 mm case length and a standard pin‑cut form.
Below is a summary of the Tier‑A parameters you’ll need when scoping the device for a schematic or sourcing decision. All values are typical for the ZLH series at the time of writing; always consult the latest Rubycon ZLH technical datasheet for final design limits.
| Parameter | Value / Range | Unit / Notes |
|---|---|---|
| Capacitance | 1000 µF ±20% | Measured at 120 Hz, 20°C |
| Rated Voltage (VR) | 25 | Vdc |
| Endurance (life) at 105°C | 10,000 hours | With rated ripple current applied |
| Ripple Current (100 kHz, 105°C) | ~1.7 | ARMS (verify exact value in manufacturer datasheet) |
| Impedance (100 kHz, 20°C) | 0.038 | Ω |
| Leakage Current | ≤ 0.01 CV or 3 µA (whichever greater) | After 2 minutes at rated voltage |
| Operating Temperature Range | -40 to +105 | °C |
| Can Dimensions | 10 mm dia. × 23 mm height | Radial, cylindrical aluminium can |
| Lead Spacing | 5.0 mm | mm |
| Termination Style | Radial, through‑hole | Pre‑bent kinked leads for stable insertion |
The endurance figure of 10,000 hours at 105°C is not a theoretical maximum—it’s a tested lifetime with the rated ripple current superimposed on the DC voltage. That ripple current drives internal heating, so the 25ZLH1000MEFC10X23 already accounts for self‑heating in its life rating. Nevertheless, derating the voltage to 80 % and reducing the ambient temperature can push practical field life far beyond the datasheet number, a point we’ll return to in the guidance section.
Pinout is polarity‑sensitive. Aluminium electrolytics will fail catastrophically if reversed. The 25ZLH1000MEFC10X23 marks the negative terminal with a distinctive stripe on the can sleeve; the longer lead is the positive (anode) connection. The Xecor product summary (Xecor) frames this plainly: “Connect the positive terminal (VCC) to the power source and the ground terminal (GND) to the circuit ground.” Always double‑check the stripe alignment before soldering—there is no tolerance for a mix‑up.
Distributor Face-Off: Where to Buy the 25ZLH1000MEFC10X23 with Confidence
Sourcing a common‑footprint rubycon capacitor is rarely about “is it available” and more about “does the channel give me traceability, a competitive price, and transparent lead‑time signals.” Four online platforms frequently appear in engineering procurement searches for the 25ZLH1000MEFC10X23, each offering a different mix of immediacy, cost, and design support.
| Distributor | Key Feature | Price Indicator | RFQ / Sourcing Support | Selection Notes |
|---|---|---|---|---|
| DigiKey | Authorised distributor; immediate datasheet and 3D CAD downloads | Individual piece pricing visible online | Online stock visibility; same‑day shipping for in‑stock units | Engineer’s first stop for prototype builds and official datasheet; no minimum quantity |
| LCSC | Competitive budget pricing from $0.1215; integrated BOM tools | From $0.1215 in high volume | Stock level indicators; partial re‑reel options | Good for production cost reduction; verify Rubycon authorisation status if traceability is critical |
| Win Source | Worldwide RFQ model; ships to hard‑to‑serve regions | Dynamic; request quote | RFQ‑driven; explicit stock‑check and batch verification | Useful for spot‑buying when authorised stock is low; ask for date‑code and certificate of conformance |
| Xecor | Supplementary design guidance and terminal‑connection diagrams | Not primarily a pricing source; check quote | General product information; less transaction‑focused | Helpful to double‑check footprint and pinout; treat as a reference, not a primary supplier for production |
Across all four channels, the golden rule stands: confirm real‑time availability and allocation‑backed lead time with the supplier before committing a production schedule. The 25ZLH1000MEFC10X23 is a high‑volume passive, but aluminium electrolytic supply can tighten, particularly for long‑life 105°C grades. Use Win Source’s RFQ to obtain an up‑to‑date delivery estimate, and always request batch traceability when sourcing through non‑authorised channels. The few extra minutes of verification can prevent a line‑down situation caused by a counterfeited or reused‑batch capacitor.
Pinout Pitfalls and Layout Rules for Integrating the 25ZLH1000MEFC10X23 Without Failures
A capacitor with a 10,000‑hour rating won’t reach half that if the layout forces it to sit next to a hot MOSFET without airflow or if the board house swaps the polarity during assembly. The 25ZLH1000MEFC10X23 is forgiving as a through‑hole component, but raw‑dog engineering—skipping the secondary checks—still invites field returns.
Polarity identification on the PCB. The negative stripe is your visual anchor. On a crowded board, silk‑screen a bold “+” and “-” marker on the top overlay and add a keep‑out region around the can to prevent shorting to adjacent traces. Reference Xecor’s VCC/GND guideline (Xecor connection description) when assigning net names; a mismatch between schematic symbol and footprint is a classic error.
Footprint and mechanical stress. The 5.0 mm lead spacing fits standard pitch patterns, but the 10 mm can diameter means the capacitor body may overhang a tighter layout. Design the pad holes slightly larger (e.g., 1.0–1.2 mm diameter) to accommodate lead tolerance without cracking the rubber seal. Keep the capacitor away from board edges where bending stress can break the solder joint. If the product will see vibration, consider using a bead of electronic-grade RTV to mechanically stabilise the can.
Derating—it’s not just a suggestion. Electrolytic capacitor life doubles for every 10 °C reduction in core temperature. The table below translates field‑proven derating rules into actionable decisions for the 25ZLH1000MEFC10X23.
| Design Parameter | Recommendation | Rationale |
|---|---|---|
| Applied DC Voltage | ≤ 80 % of rated voltage (20 V max) | Reduces leakage current and slows electrolyte dry‑out; maintains oxide layer integrity |
| Ripple Current Load | Stay at or below 80 % of rated 105°C figure | Keeps internal self‑heating within safe margin, extending actual life beyond the rated 10k hours |
| Ambient Temperature | Aim for ≤ 85°C at the capacitor surface if possible | A 20°C drop from 105°C can quadruple the effective endurance (life doubles every 10°C) |
| Lead‑Spacing Precision | Verify 5.0 mm footprint with ±0.5 mm tolerance | Avoids mechanical strain on the seal; poor alignment can cause micro‑leakage paths |
| Polarity Confirmation | Add optical inspection step post‑wave‑soldering | Reversed electrolytics vent or short internally; catching them at ICT prevents damaging the entire power rail |
These precautions align with the philosophy behind good datasheet interpretation highlighted by Ultra Librarian (Electronic component datasheets): the physical dimensions and ratings are only half the story—application context determines real reliability. Likewise, the methodical approach to technical documentation that onsemi advocates (onsemi technical documentation)—cross‑referencing application notes with datasheet min/max limits—is exactly the discipline that keeps a 10,000‑hour capacitor alive for a decade.
Questions Engineers and Buyers Ask When Specifying the 25ZLH1000MEFC10X23
Q: What is the real‑world ripple current rating at 105°C for the 25ZLH1000MEFC10X23?
The Rubycon ZLH series datasheet typically specifies around 1.7 A (RMS) at 100 kHz and 105°C for the 10×23 mm case. This value is frequency‑dependent; at lower frequencies the allowable ripple drops. Always pull the latest manufacturer datasheet from DigiKey to obtain the exact derating curves and apply additional margin if your bulk capacitor sees a mixture of low‑ and high‑frequency ripple.
Q: Can I drop the 25ZLH1000MEFC10X23 into any design that calls for a 1000 µF, 25 V radial capacitor?
Not unconditionally. While capacitance and voltage match, you must verify that the can dimensions (10×23 mm), lead spacing (5 mm), ripple current capability, and 10,000‑hour endurance at 105°C align with your thermal and lifetime requirements. A generic 1000 µF/25 V part might be a 2,000‑hour capacitor in a larger can; swapping it for the 25ZLH1000MEFC10X23 will usually improve reliability, but you must still check that the PCB footprint and enclosure clearance permit the slightly taller can.
Q: What is the shelf life of the 25ZLH1000MEFC10X23 before it needs reforming?
Like most aluminium electrolytics, long periods without applied voltage can degrade the oxide layer, resulting in high initial leakage current when first powered. Rubycon recommends reforming (gradually applying rated voltage through a current‑limiting resistor) or using components within approximately two years from the date of manufacture. Refer to the ZLH series technical notes for detailed storage conditions and reforming instructions.
Q: Can this capacitor withstand reflow soldering?
No. The 25ZLH1000MEFC10X23 is a radial leaded component with a PVC sleeve and rubber end seal that are not rated for IR reflow profiles. It is intended exclusively for hand soldering or wave soldering, with careful control of solder temperature (≤ 260°C, typically under 10 seconds) and pre‑heat to avoid thermal shock that could fissure the seal.
Q: How do I spot counterfeits when buying from grey‑market distributors?
Purchase from Rubycon’s authorised channels (such as DigiKey) whenever possible. When sourcing from sites like LCSC or Win Source, cross‑check the batch codes, sleeve print quality, and vent stamp alignment against the official datasheet images. Request a certificate of conformance and, for high‑value production runs, ask the distributor to provide date‑code and lot‑traceability documentation. Rubycon’s genuine sleeves have a distinct matte finish and crisp laser marking; faded or blurry prints should raise a red flag.
Q: What lead time should I expect for volume orders of the 25ZLH1000MEFC10X23?
Lead times for aluminium electrolytics fluctuate with global materials supply. Small prototype quantities often ship in days when in stock at catalog distributors like DigiKey or LCSC. Volume orders, however, can vary — confirm allocation-backed timing via RFQ depending on factory allocation. Use Win Source’s RFQ (Win Source) or contact your authorised Rubycon distributor to obtain a commitment‑backed delivery date before locking in a production schedule. Never rely on online stock flags alone for production planning; allocation can change without notice.
References & Further Reading
- Rubycon 25ZLH1000MEFC10X23 at DigiKey – datasheets, price, and availability
- Xecor product summary and terminal connection guide
- Win Source RFQ and stock check for 25ZLH1000MEFC10X23
- LCSC product page – pricing from $0.1215 and BOM integration
- Ultra Librarian: Electronic Component Datasheets – what to look for
- onsemi technical documentation – reading datasheets and design guides
When you’re ready to move from datasheet evaluation to procurement, the 25ZLH1000MEFC10X23 is a part where price and lead time can be negotiated across multiple credible channels. Use your BOM as a lever: upload the full passive and active component list to IC-Online. Our specialists will match the Rubycon capacitor with verified supply, suggest allocation‑backed alternatives when flexibility is needed, and deliver a consolidated quote—whether you need prototype strips or just‑in‑time reels. Request your quote today and take the uncertainty out of long‑life capacitor sourcing.
