BAT46LS-QYL - 100V 250mA Schottky Diode | Nexperia
MPN: BAT46LS-QYL β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.07 | $0.07 |
| 10 | $0.06 | $0.60 |
| 100 | $0.05 | $5.00 |
| 500 | $0.04 | $20.00 |
| 1,000 | $0.035 | $35.00 |
Drop-in alternatives for BAT46LS-QYL β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
BAT46LS-QYLX
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
BAT46LS-QYL Maximum Ratings & Electrical Characteristics
| Diode Type | General-purpose Schottky barrier diode |
| Reverse Voltage (VRRM) | 100 V |
| Forward Current (IF(AV)) | 250 mA |
| Package | DFN1006BD-2 (SOD882BD, XSON2) |
| Package Features | Leadless SMD with side-wettable flanks |
| Mounting Type | Surface Mount |
| Configuration | Single diode |
| Qualification | Automotive (-Q line) |
| Reverse Recovery | Schottky - negligible reverse recovery |
| Package Dimensions | Approx. 1.0 mm x 0.6 mm body |
BAT46LS-QYL Pin Configuration
| Pin 1 | A (Anode) β Anode terminal of the Schottky diode |
| Pin 2 | K (Cathode) β Cathode terminal, marked by the cathode bar on the package top |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
BAT46LS-QYL is suitable for 6 applications: Automotive Reverse-Polarity Protection, Low-Current Auxiliary Power Rectification, ORing of Low-Current Supply Rails, Signal Clamping and Routing in Portable Electronics, Industrial PLC and Sensor Input Protection, Battery-Powered Metering and Handheld Instruments.
Automotive Reverse-Polarity Protection
In automotive 12 V and 24 V networks, the BAT46LS-QYL is placed in series with supply rails feeding sensors, body-electronics modules, and ECUs to block reverse-battery connection. Its 100 V reverse voltage rating gives wide blocking margin above the 12 V nominal rail with load-dump-adjacent transients handled by upstream clamping, and the Schottky junction's low forward drop (compared with a standard P-N diode) minimizes power loss and voltage sag at loads up to 250 mA. The automotive -Q line process control supports automotive quality flows, and the side-wettable flanks of the DFN1006BD-2 package allow AOI verification of solder joints in safety-relevant assemblies.
Recommended
Low-Current Auxiliary Power Rectification
The BAT46LS-QYL serves as an output or auxiliary rectifier in low-power flyback and buck-derived auxiliary supplies, where its 250 mA rating and 100 V blocking cover small standby rails. Because the Schottky structure has negligible reverse recovery charge, switching losses at typical 50-500 kHz converter frequencies stay low, improving efficiency versus fast-recovery P-N diodes. In the DFN1006BD-2 (SOD882BD) footprint of about 1.0 x 0.6 mm, it fits dense converter layouts; designers should provide short, wide copper pours on both pads since the tiny leadless body relies on the PCB for heat spreading during continuous conduction.
Recommended
ORing of Low-Current Supply Rails
When combining a main supply with a battery or auxiliary input, the BAT46LS-QYL is wired as a series ORing diode from each source to the load node. The Schottky low forward drop keeps the delivered rail close to the source voltage, and the 100 V rating tolerates voltage differences and transients between sources far beyond low-voltage ORing requirements. At loads within 250 mA, self-heating stays modest even in the 1.0 x 0.6 mm DFN1006BD-2 body. Side-wettable flanks improve joint reliability where thermal cycling between sources could fatigue solder joints, a common failure mode in portable and automotive dual-source designs.
Recommended
Signal Clamping and Routing in Portable Electronics
The BAT46LS-QYL clamps inductive kickback from relays, buttons, and small motors and routes signal lines in handheld and IoT devices. The Schottky junction switches between conducting and blocking states with essentially no reverse recovery, so it does not slow down fast edges or inject charge glitches into sensitive nodes, unlike junction diodes. Its 100 V margin protects against the tall negative spikes that inductive loads generate, and the sub-millimeter DFN1006BD-2 footprint suits wearables and compact sensor boards. Keep clamp loop inductance low by placing the diode directly across or beside the inductive element on the PCB.
Recommended
Industrial PLC and Sensor Input Protection
Industrial 24 V I/O modules use the BAT46LS-QYL as a blocking and freewheeling diode on digital input channels and low-current actuator drives. The 100 V reverse rating comfortably covers 24 V rail transients, while the 250 mA forward capability suits the per-channel currents of sensing and pilot circuits. The automotive-grade -Q process behind the part provides additional reliability headroom in 24/7 industrial environments. The side-wettable DFN1006BD-2 package allows post-reflow optical inspection on high-volume SMT lines, supporting IPC-class solder-joint acceptance workflows commonly required by industrial automation customers.
Recommended
Battery-Powered Metering and Handheld Instruments
In battery-operated meters and handheld test instruments, every millivolt of series drop extends usable battery life. The BAT46LS-QYL's Schottky low forward drop makes it appropriate for reverse-battery blocking and small charge-path duties, while its very low reverse leakage at room temperature minimizes quiescent drain when the diode is blocking. Designers should verify leakage at maximum instrument ambient temperature because Schottky leakage roughly doubles every 10 C. The 1.0 x 0.6 mm leadless DFN1006BD-2 body with side-wettable flanks fits dense probe-front-end PCBs without sacrificing inspectability.
Recommended
Recommended Products Summary
Engineering reference data for BAT46LS-QYL β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BAT46LS-QYLX | BAT46WJ-Q |
|---|---|---|---|
| Package | DFN1006BD-2 (SOD882BD), side-wettable flanks | DFN1006BD-2 (SOD882BD) - same | SOD-123 leaded - different footprint |
| Brand | Nexperia | Nexperia | Nexperia |
| Reverse Voltage (VRRM) | 100 V | 100 V | 100 V |
| Forward Current | 250 mA | 250 mA | 250 mA |
| Body Size | Approx. 1.0 x 0.6 mm | Approx. 1.0 x 0.6 mm | Approx. 3.7 x 1.6 mm |
| AOI-Inspectable Wettable Flanks | Yes | Yes | N/A (leaded package, leads visible) |
| Automotive -Q Line | Yes | Yes | Yes |
| Unit Price (qty 1, as of 2026-09-13) | $0.0692 (LCSC) | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- 100 V reverse rating in an ultra-small package (vs BAT46WJ-Q)
- Side-wettable flanks for AOI (vs BAT46X)
- Automotive -Q line process control (vs Standard BAT46 (ST))
Design Notes
The DFN1006BD-2 (SOD882BD) body is only about 1.0 x 0.6 mm, so all heat is removed through the two small solder pads into the PCB copper. Estimated: at 250 mA continuous with roughly 0.4-0.5 V forward drop (typical for 100 V-class small-signal Schottkys - confirm VF on the datasheet), dissipation is around 0.1 W; keep at least 4-6 square millimeters of copper connected to each pad and avoid thermal relief spokes to limit junction temperature rise in high-ambient enclosures.
Follow the Nexperia land-pattern recommendation in the BAT46LS-Q datasheet for the DFN1006BD-2 footprint; pads must be slightly extended beyond the body to allow the side-wettable flanks to form a visible solder meniscus for AOI. Use a standard lead-free reflow profile per Nexperia's SMD soldering application note (e.g., SNMA/AN9003-type guidance); hand soldering leadless packages is not recommended.
Do not assume room-temperature reverse leakage in battery-powered designs - Schottky leakage approximately doubles every 10 C, so budget leakage at the maximum ambient plus self-heating. Also, never rely on the diode alone to absorb automotive load-dump transients; pair it with upstream TVS clamping because the 100 V rating is a repetitive limit, not a transient-energy rating.
Compliance Information
The part is listed in Nexperia's automotive product line (-Q suffix), but specific RoHS/REACH/AEC-Q100 qualification status was not stated in the retrieved web data and must be confirmed from the official Nexperia datasheet or product compliance documents.
