IAUZ20N08S5L300ATMA1 - 80V 20A N-Ch OptiMOS 5 MOSFET | Infineon
MPN: IAUZ20N08S5L300ATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
| 3,000 | $0.81 | $2,430.00 |
Drop-in alternatives for IAUZ20N08S5L300ATMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →IAUZ20N08S5L300ATMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | OptiMOS-5 |
| Polarity | N-Channel |
| Drain-Source Voltage (Vds) | 80 V |
| Continuous Drain Current (Id) | 20 A (Tc) |
| Power Dissipation (Pd) | 30 W (Tc) |
| On-State Resistance (Rds(on)) | 30 mΩ @ 10 A, 10 V |
| Gate Threshold Voltage (Vgs(th)) | ±20 V (max Vgs rating) |
| Input Capacitance (Ciss) | 599 pF @ 40 V |
| Total Gate Charge (Qg) | 10.5 nC @ 10 V |
| Operating Junction Temperature | -55°C to +175°C |
| Package | PG-TSDSON-8-32 (S3O8) 3.3 x 3.3 mm |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q101 (automotive) |
| Technology | Trench MOSFET (OptiMOS-5) |
| RoHS Status | Compliant |
IAUZ20N08S5L300ATMA1 Pin Configuration
| Pin 1 | Source — Source connection (internally tied to pins 1-7 and exposed pad region) |
| Pin 2 | Source — Source connection |
| Pin 3 | Source — Source connection |
| Pin 4 | Source — Source connection |
| Pin 5 | Source — Source connection |
| Pin 6 | Source — Source connection |
| Pin 7 | Source — Source connection |
| Pin 8 | Gate — Gate drive input (Vgs ±20 V max) |
Safe Operating Area (DC, Tc=25°C)
Typical Applications
IAUZ20N08S5L300ATMA1 is suitable for 7 applications: Automotive LED Lighting Drivers, 48V Mild-Hybrid DC-DC Converters, Battery Management & Protection, Body Electronics & Load Switches, Industrial 24V Solenoid & Relay Drivers, USB-PD & High-Current Type-C Power Paths, E-Bike & Light Electric Vehicle Power Stages.
Automotive LED Lighting Drivers
The IAUZ20N08S5L300ATMA1 fits automotive LED headlight and DRL driver stages because its 80 V Vds rating tolerates 24 V bus transients including load-dump events up to 35 V. The 30 mΩ Rds(on) at 10 V Vgs keeps conduction losses below 1.5 W at typical LED-string currents of 5-7 A, while the AEC-Q101 qualification ensures reliability across -40°C to +175°C automotive temperature ranges. The 3.3 x 3.3 mm S3O8 footprint enables compact driver layouts behind headlamp enclosures, and the 10.5 nC Qg supports PWM dimming frequencies above 1 kHz without significant switching losses.
Recommended
48V Mild-Hybrid DC-DC Converters
For 48 V mild-hybrid buck and boost converters, the IAUZ20N08S5L300ATMA1 provides the headroom needed for transient voltages up to 80 V while maintaining a low 30 mΩ Rds(on). Its 10.5 nC Qg enables efficient switching at 200-500 kHz, allowing smaller magnetics in 48 V-to-12 V DC-DC stages. The PG-TSDSON-8-32 exposed-drain pad provides effective thermal dissipation for 30 W continuous operation, and the AEC-Q101 qualification meets automotive reliability requirements for powertrain modules mounted near the engine bay.
Recommended
Battery Management & Protection
In 12 V and 24 V battery management systems, the IAUZ20N08S5L300ATMA1 serves as a high-side disconnect switch or load-dump protection element. The 80 V Vds rating handles jump-start and load-dump transients, while 20 A continuous drain current supports most automotive load channels. The 30 mΩ Rds(on) limits steady-state voltage drop to under 60 mV at 2 A, preserving battery capacity. Its OptiMOS-5 trench technology provides fast turn-off in fault conditions, critical for short-circuit protection in BMS architectures.
Recommended
Body Electronics & Load Switches
The IAUZ20N08S5L300ATMA1 is well suited for body-electronics load switches controlling motors, solenoids, and resistive loads in door modules, seat controllers, and HVAC actuators. Its 80 V rating tolerates inductive flyback transients when switching solenoids or relays, eliminating the need for separate TVS clamp protection in many cases. The 20 A continuous current handles most body-electronics loads directly, and the 30 mΩ Rds(on) reduces I²R losses that would otherwise generate heat in confined modules. AEC-Q101 qualification ensures long-term reliability in underhood and cabin environments.
Recommended
Industrial 24V Solenoid & Relay Drivers
Industrial 24 V solenoid and relay driver circuits benefit from the IAUZ20N08S5L300ATMA1's 80 V Vds margin, which absorbs inductive kickback without requiring external snubbers. The 20 A continuous drain current supports large solenoids used in hydraulics and process control, while the 30 mΩ Rds(on) keeps dissipation manageable even at sustained high currents. Although not automotive-qualified industrial applications use the same Infineon OptiMOS-5 technology, providing proven reliability. The PG-TSDSON-8-32 package is compatible with reflow soldering and high-density PCB layouts common in industrial controllers.
Recommended
USB-PD & High-Current Type-C Power Paths
In USB Power Delivery and high-current Type-C power-path designs, the IAUZ20N08S5L300ATMA1 functions as the input protection or hot-swap MOSFET. Its 80 V Vds rating exceeds the 20 V maximum USB-PD voltage with substantial margin, and the 30 mΩ Rds(on) minimizes voltage drop on the VBUS line at 5 A (only 150 mV drop). The 10.5 nC Qg enables fast turn-on/off for OVP and OCP response under microseconds, and the 3.3 x 3.3 mm S3O8 footprint fits tightly on compact Type-C connector daughter boards.
Recommended
E-Bike & Light Electric Vehicle Power Stages
Light electric vehicles such as e-bikes and e-scooters use 24 V to 48 V battery packs where the IAUZ20N08S5L300ATMA1 fits as a half-bridge switch in motor controllers. The 80 V Vds rating handles the back-EMF of brushless DC motors at full speed, while 20 A continuous current supports 250 W to 500 W motor power levels. The 30 mΩ Rds(on) keeps conduction losses below 3% at rated current, preserving battery range. The OptiMOS-5 fast switching characteristic reduces torque ripple at high PWM frequencies, improving ride smoothness.
Recommended
Recommended Products Summary
Engineering reference data for IAUZ20N08S5L300ATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IAUZ40N08S5N100ATMA1 | IAUC28N08S5L230ATMA1 | IAUC64N08S5L075ATMA1 | BSC052N08NS5ATMA1 | BSC123N08NS3GATMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TSDSON-8-32 (S3O8) | PG-TSDSON-8-32 (S3O8) - same | PG-TSDSON-8-32 (S3O8) - same | PG-TSDSON-8-32 (S3O8) - same | PG-TSDSON-8-32 (S3O8) - same | PG-TSDSON-8-32 (S3O8) - same |
| Drain-Source Voltage (Vds) | 80 V | 80 V | 80 V | 80 V | 80 V | 80 V |
| Continuous Drain Current (Id @ Tc) | 20 A | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| On-State Resistance (Rds(on)) | 30 mΩ @ 10 A, 10 V | 100 mΩ | 23 mΩ | 7.5 mΩ | 5.2 mΩ | 12.3 mΩ |
| Total Gate Charge (Qg) | 10.5 nC @ 10 V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Technology | OptiMOS-5 | OptiMOS-5 | OptiMOS-5 | OptiMOS-5 | OptiMOS-5 | OptiMOS-3 (older) |
| Automotive Qualification | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 |
| Approx. Unit Price (qty 1000) | $0.92 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- OptiMOS-5 technology provides best-in-class FOM (Rds(on) × Qg) (vs BSC123N08NS3GATMA1 (OptiMOS-3))
- Lower Rds(on) than higher-Rds(on) family alternatives (vs IAUZ40N08S5N100ATMA1 (100 mΩ))
- Balanced Rds(on)/Qg trade-off for switching applications (vs IAUC64N08S5L075ATMA1 (7.5 mΩ, higher Qg))
Design Notes
Estimated: At 10 A continuous drain current with 30 mΩ Rds(on), conduction loss is I²R = 100 × 0.030 = 3 W. The PG-TSDSON-8-32 package has a typical RthJA of approximately 50°C/W on a 1 sq-inch copper pour (4-layer FR4). Junction temperature rise is therefore roughly 150°C above ambient, requiring either substantial copper cooling or operation below 10 A in high-temperature environments. For sustained 20 A operation, increase copper area to at least 2 sq inches or use forced airflow.
The exposed drain pad on the bottom of the PG-TSDSON-8-32 package is the primary thermal path and must be soldered to a PCB copper pour of at least 1 square inch on the top layer, with thermal vias connecting to inner and bottom copper planes. Use an array of 0.3 mm thermal vias on a 0.6 mm pitch. Insufficient thermal via density can increase junction-to-ambient thermal resistance by 30-50% and lead to thermal runaway. Source pins 1-7 should be connected to a unified ground copper pour to minimize source-inductance-induced ringing.
A common pitfall with the IAUZ20N08S5L300ATMA1 is driving the gate below the rated 10 V enhancement voltage. At Vgs = 4.5 V, Rds(on) increases by 2-3x, dramatically raising conduction losses. Always use a gate-driver IC capable of sourcing 10 V at the gate charge current required by 10.5 nC Qg within the desired switching time. Add a 10-100 Ω gate resistor to dampen parasitic ringing, and place the gate-driver as close to the MOSFET gate pin as possible (less than 5 mm trace length).
For switching applications, the high-current loop (input capacitor → MOSFET drain-source → output) must be minimized to reduce parasitic inductance. Use wide copper pours or planes, and place the input bypass capacitor within 2-5 mm of the drain pad. The gate-drive loop should be kept small and isolated from the power loop to avoid capacitive coupling of dv/dt into the gate, which can cause spurious turn-on. A ground pour directly under the MOSFET can reduce EMI by providing a low-impedance return path.
Compliance Information
AEC-Q101 (automotive discrete) qualified per Infineon product page. RoHS and REACH compliant. Halogen-free per Infineon product family policy.
