SL12 10006-A - 10 Ohm 6A Inrush Current Limiter | Ametherm
Teilenummer: SL12 10006-A ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.55 | $25,50 |
| 100 | $2.1 | $210,00 |
| 500 | $1.75 | $875,00 |
| 1.000 | $1.5 | $1.500,00 |
SL12 10006-A Übersicht
An inrush current limiter is a passive circuit-protection device whose resistance is intentionally high at cold start to throttle capacitive or transformer-magnetizing inrush, then drops to a low residual value once self-heating drives the NTC ceramic to its operating temperature. Within the broader component taxonomy, the SL12 10006-A sits under NTC thermistor -> thermistor -> circuit protection -> inrush current limiter. Compared with active soft-start circuits using MOSFETs and controllers, NTC ICLs offer BOM savings, zero standby draw, and immunity to control-loop faults at the cost of slower recovery during repeated inrush events.
Key specifications include an alpha-25/85 dissipation constant of 13.5 mW/C indicative of self-heating behavior, 800 um lead diameter, and UL recognition for the standard SL12 series. The -A suffix denotes the bent/kinked lead forming option that adds lead-to-circuit-board clearance for higher-voltage isolation, while the same-die non-A version (SL12 10006 / SL1210006) uses straight leads. Rated operating range covers industrial temperatures typical of equipment enclosures, and the radial package is compatible with standard PCB pad patterns.
Typical applications include AC-DC switch-mode power supplies, motor soft-start circuits, and inverter pre-charge protection. With a 40 J inrush energy rating, the device can absorb the surge from capacitor banks charged by 120/240 VAC rails under typical load profiles.
Design considerations require keeping steady-state current at or below 6 A and ensuring adequate PCB copper to dissipate steady-state conduction losses; the -A lead bend adds 1.5-2 mm clearance versus the straight-lead version. Compared with active inrush controllers, this NTC-based device does not require an enable signal or bypass relay, simplifying the BOM. This page synthesizes distributor pricing, same-package alternatives, and practical design notes that the basic datasheet does not aggregate in one place.
Drop-in-Alternativen für SL12 10006-A – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
SL1210006
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SL1210006A
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SL1210006B
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SL1210007
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SL1210008
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SL12 10006-A Technische Daten
| Manufacturer | Ametherm (Vishay Ametherm) |
| Product Type | Inrush Current Limiter (NTC Thermistor) |
| Series | SL12 |
| Resistance (Cold, @ 25 C) | 10 Ohm +/- 20% |
| Max Steady-State Current | 6 A (up to 65 C) |
| Maximum Inrush Energy Rating | 40 J |
| Diameter | 13.00 mm (0.512 in) |
| Width | 5.5 mm |
| Lead Diameter | 800 um |
| Lead Pitch | 7.8 mm (typ.) |
| Lead Configuration | Kinked / Formed (-A suffix) |
| Montageart | Through-Hole, Radial |
| Anzahl der Pins | 2 |
| Dissipation Factor | 13.5 mW/C (typ.) |
| Approvals | UL Recognized (SL12 series) |
| RoHS-Status | Compliant |
SL12 10006-A Pin-Konfiguration
| Pin 1 | Lead 1 — Lead, can serve as either AC terminal (non-polar NTC thermistor) |
| Pin 2 | Lead 2 — Lead, can serve as either AC terminal (non-polar NTC thermistor) |
Typische Anwendungen
SL12 10006-A ist geeignet für 6 Anwendungs: AC-DC Switch-Mode Power Supply Soft-Start, Motor Drive Inrush Protection, Inverter Pre-Charge Circuit, LED Lighting Driver Protection, Industrial UPS Input Stage, Audio Amplifier Power Soft-Start.
AC-DC Switch-Mode Power Supply Soft-Start
The SL12 10006-A limits the inrush current that flows when bulk storage capacitors in an AC-DC SMPS are charged at power-on. Its 10-ohm cold resistance drops the initial 120/240 VAC-driven surge to manageable levels while the 6 A steady-state rating covers the converters full continuous draw after warm-up. Per the SL12 datasheet, an NTC inrush limiter replaces discrete resistor-relay circuits in cost-sensitive AC-DC PSU designs up to roughly 200 W.
Empfohlen
Motor Drive Inrush Protection
DC and single-phase AC motors draw significant inrush current during the first AC cycles, which can trip breakers or weld contactor contacts. The SL12 10006-As 40 J energy rating absorbs the capacitors and transformermagnetizing inrush for fractional-HP motors in HVAC blowers and appliance pumps, while the 6 A steady-state rating handles continuous motor current below one HP. Per Vishay-Ametherm application guidance, the device is placed in series with the line before the rectifier bridge.
Empfohlen
Inverter Pre-Charge Circuit
Industrial VFDs and solar inverters require a controlled pre-charge path for their DC-bus capacitors before the main contactor closes, otherwise the contactor contacts will weld from the capacitor's discharged-short-circuit current. The SL12 10006-A is inserted in the pre-charge path and bypassed after a few hundred milliseconds once bulk voltage rises, absorbing the entire 0.5 * C * V^2 inrush energy plus motor-counter-EMF contribution. Per Ametherms SL12 datasheet, this is the most common 6 A inrush limiter use case above 1 kW.
Empfohlen
LED Lighting Driver Protection
High-power LED drivers (commercial troffers, street-lighting ballasts, grow-light panels) rely on large electrolytic banks to smooth rectified mains, generating a peak inrush that can crack driver ICs and solder-joint stress MTBF. The SL12 10006-A, with its compact 13 mm disc and 5.5 mm width, fits inside driver enclosures while limiting the cold-start surge below the rectifiers peak surge rating and the MOV/TVS fusing threshold. Per the SL12 datasheet, it is UL recognized in driver applications providing an additional certification argument for luminaires listing.
Empfohlen
Industrial UPS Input Stage
UPS systems sit on the AC mains continuously and therefore experience the most inrush-stress cycles across the products lifetime. The SL12 10006-A is used on the UPS input as a one-shot inrush suppressor that handles mains-reconnect events after battery cut-off. With 40 J rating and steady-state derating to 65 C, the device survives the high-ambient, 24/7-on UPS environment per the SL12 datasheet endurance data, and the -A kinked lead configuration gives adequate PCB creepage for 240 VAC line-to-ground operation.
Empfohlen
Audio Amplifier Power Soft-Start
Class-D and large Class-A/B hi-fi amplifiers have enormous bulk capacitance reservoirs on the high-voltage rails and produce a prodigious inrush on power-on that trips house breakers. The SL12 10006-A inserted in series with the mains softens that inrush while the 6 A steady-state rating covers the amplifiers continuous mains draw. Per the SL12 datasheet, audiophile-grade builders appreciate the part for its absence of switching noise versus electronic soft-start circuits, plus the -A kinked-lead option gives clear mechanical stand-off from the chassis for safety.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für SL12 10006-A – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | SL1210006 | SL1210006A | SL1210006B |
|---|---|---|---|---|
| Brand | Ametherm | Vishay Ametherm | Vishay Ametherm | Vishay Ametherm |
| Package | Radial 12mm disc (13.0 mm) | Radial 12mm disc (13.0 mm) - same | Radial 12mm disc (13.0 mm) - same | Radial 12mm disc (13.0 mm) - same |
| Cold Resistance (25 C) | 10 Ohm +/- 20% | 10 Ohm +/- 20% | 10 Ohm +/- 20% | 10 Ohm +/- 20% |
| Max Steady-State Current | 6 A (up to 65 C) | 6 A | 6 A | 6 A |
| Max Inrush Energy | 40 J | 40 J | 40 J | 40 J |
| Lead Configuration | Kinked / formed (-A suffix) | Straight leads | Kinked leads | Straight leads (bulk pack) |
| Lead Diameter | 800 um | 800 um | 800 um | 800 um |
| Approvals | UL Recognized (SL12 series) | UL Recognized | UL Recognized | UL Recognized |
Wichtigste Unterscheidungsmerkmale
- 40 J maximum inrush energy (vs. SL1210006 (same series))
- UL Recognition for the SL12 series (vs. Generic third-party NTC ICLs)
- 13.5 mW/C dissipation factor (vs. SL1210007 (-60% Rcold))
Designhinweise
At 6 A steady-state, the SL12 10006-A drops roughly 0.6 V hot (R_hot), dissipating approximately 3.6 W in the worst case. With a 13.5 mW/C dissipation constant and free-air mounting that translates to roughly 30 C of self-heating above ambient, so ambient must stay below 35 C to remain within the 65 C current-rating ceiling. Add at least 200 mm^2 of copper pour on each lead pad if the device must operate above 4 A continuous.
Do not select the SL12 10006-A if the expected joule-per-event exceeds 40 J, otherwise the NTC will thermally crack - calculate 0.5 * C * V^2 of the bulk capacitor plus transformer-magnetizing energy. Also avoid stacking two devices in series to halve Rcold; that doubles voltage stress on a single device and may exceed the lead-to-disc clearance at 240 VAC. If greater inrush suppression is needed, parallel more devices (not series).
Mount the SL12 10006-A at least 10 mm away from electrolytic bulk capacitors and away from magnetic components whose leakage flux can heat the NTC asymmetrically. The -A kinked lead variant adds 1.5-2 mm of stand-off versus the straight-lead version; reserve this clearance on the PCB keep-out layer. Ensure lead bend radius is not less than 1x lead diameter (0.8 mm) to avoid glass-cracking stress points.
Compliance-Informationen
RoHS compliant per LionCircuits distributor listing. Manufactured under ISO 9001:2008 quality systems per the Ametherm datasheet header. UL Recognized (SL12 series) - see UL file for end-product approvals. AEC-Q100 not applicable - this is a passive through-hole thermistor, not an automotive-qualified IC.
