NCV8405A is an onsemi AEC-Q101 self-protected low-side driver — an integrated N-channel power switch with built-in current limit, thermal shutdown and voltage clamping, for driving relays, solenoids, lamps and heaters in automotive and industrial loads from a logic-level signal. The integration is the selection point: one 3-pin device replaces a discrete MOSFET plus sense resistor, clamp diode and protection circuitry, and it reports fault state back through its gate-input current (distinct current-limit and thermal-limit fault signatures), so the host MCU can detect a faulted load without extra sense wiring. Key ratings: 42 V internally clamped drain-to-source voltage, 90 mΩ typical on-resistance at VGS = 10 V (105 mΩ typical at 5 V), current limit about 9 A typical at VGS = 5 V and 10.5 A typical at 10 V (25°C), thermal turn-off about 180°C typical at 5 V with 15°C hysteresis, 275 mJ single-pulse avalanche energy, 53 V load-dump capability, and -40°C to +150°C junction temperature. Selection advice: the A suffix is the ordering variant available in SOT-223 (STT1G/STT3G) and DPAK (ADTRKG) — pick SOT-223 for compact layouts and DPAK where higher dissipation (about 2.0–2.5 W versus 1.0–1.7 W) is needed. Drive it at 10 V where the lowest on-resistance matters; 5 V logic drive works but runs hotter at the same current. Do not substitute the B suffix: its only ordering code (DPAK) is discontinued. Featured on Mouser New Products (2026-10-15). Parameters verified against onsemi documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.
NCV8405A is a Automotive low-side gate driver from onsemi, orderable in the SOT-223 package. The ordering code fixes the exact configuration you receive — package, grade and packing — so procurement starts with matching this code character-for-character against your BOM, not just the base series name.
When you request a quote, include the full ordering code, the target packing format (reel, tube, tray or cut tape), your quantity and any date-code or lot requirements. We reconfirm manufacturer, suffix, package, date code and traceability against the actual offered lot before any commercial quote is issued, and every RFQ gets a reply within 24 hours.
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Every suffix in a manufacturer ordering code identifies one exact orderable device — package, temperature grade, packing format or a revision. NCV8405A names the SOT-223 configuration; a code that differs by even one suffix character may be a different device. Always quote the complete code exactly as it appears on your BOM.
The package (SOT-223) is the physical form of the device itself. Packing describes how the devices are delivered — reel, tube, tray or cut tape. The same ordering code can ship in different packing formats depending on the lot, so confirm the required packing format when you submit your RFQ.
Traceability evidence — lot and date-code information, labels and photos — is confirmed per lot at quotation time, because it depends on the actual lot offered. Tell us which documents your receiving inspection requires when you submit the RFQ, and we will confirm what can be provided for the offered lot.
Add NCV8405A to your RFQ with the complete ordering code, the manufacturer (onsemi), your quantity, the target packing format and any date-code requirements. We reply to every RFQ within 24 hours.