BSZ018NE2LSATMA1 - 25V OptiMOS N-Ch MOSFET, 23A/40A | Infineon
MPN: BSZ018NE2LSATMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.67 | $0.67 |
| 10 | $0.59 | $5.90 |
| 100 | $0.48 | $48.00 |
| 500 | $0.41 | $205.00 |
| 1,000 | $0.36 | $360.00 |
| 5,000 | $0.31 | $1,550.00 |
Drop-in alternatives for BSZ018NE2LSATMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BSZ0501NS
✅ Drop-In📋 Reference alternative (not in catalog)
BSZ0901NS
✅ Drop-In📋 Reference alternative (not in catalog)
BSZ018NE2LSIATMA1
✅ Drop-In✓ In Stock
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View Datasheet →ISC011N03L5SATMA1
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$0.47 / Unit
View Datasheet →BSC020N03LSGATMA1
✅ Drop-In✓ In Stock
$0.42 / Unit
View Datasheet →BSC027N06LS5ATMA1
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View Datasheet →BSZ018NE2LSATMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | OptiMOS 25V |
| Technology | N-Channel Trench MOSFET |
| Drain-Source Voltage (VDS) | 25 V |
| Continuous Drain Current (TA) | 23 A |
| Continuous Drain Current (TC) | 40 A |
| Power Dissipation (TA) | 2.1 W |
| Power Dissipation (TC) | 69 W |
| Operating Temperature Range | -55C to +150C |
| Package | PG-TSDSON-8-FL (8-pin TSDSON with exposed pad) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Halogen-Free | Yes |
BSZ018NE2LSATMA1 Pin Configuration
| Pin 1 | Source — Source connection (pin 1) |
| Pin 2 | Source — Source connection (pin 2) |
| Pin 3 | Source — Source connection (pin 3) |
| Pin 4 | Gate — Gate drive input |
| Pin 5 | Drain — Drain connection (pin 5) |
| Pin 6 | Source — Source connection (pin 6) |
| Pin 7 | Source — Source connection (pin 7) |
| Pin 8 | Source — Source connection (pin 8) |
Safe Operating Area (DC)
Typical Applications
BSZ018NE2LSATMA1 is suitable for 7 applications: 12V Synchronous Rectification in DC-DC Buck Converters, Multi-Cell Li-Ion Battery Protection and Load Switching, USB-PD Power-Path OR-ing and Source Selection, Hot-Swap and eFuse Circuits on 12V Distribution Rails, BLDC Motor Drive Half-Bridge for Small Fans and Pumps, Automotive 12V Load Switching and Body Electronics, LED Driver and Lighting Power Stage.
12V Synchronous Rectification in DC-DC Buck Converters
The BSZ018NE2LSATMA1 is well suited to the low-side synchronous rectifier position in 12V-to-low-voltage buck converters for servers, telecom, and graphics-card power stages. Its 25V VDS rating provides ample margin above a 12V bus including ringing transients, and the low RDS(on) keeps conduction loss under 1% of output power at full 20A load. Placed between the SW node and PGND with a gate-driver such as the Infineon 2ED21834S06JXUMA1, the device enables >95% efficiency at 500 kHz switching frequency. The PG-TSDSON-8-FL package footprint fits the standard 5x6 mm power-pad land pattern used across the industry.
Recommended
Multi-Cell Li-Ion Battery Protection and Load Switching
For 2S-4S Li-ion battery packs (8.4V to 16.8V nominal), the BSZ018NE2LSATMA1 serves as the load-switch or charge-discharge FET in the protection circuit. Its 25V VDS covers the maximum 4S charging voltage of 16.8V plus transient spikes, and the 23A continuous rating supports 5A-10A continuous discharge with proper PCB heatsinking. The low RDS(on) reduces I²R loss during high-current discharge, extending battery runtime by 1-2% in mobile applications. Pair with a battery management IC for cell-balancing and overcurrent protection, and place a TVS across drain-source for hot-plug transient suppression.
Recommended
USB-PD Power-Path OR-ing and Source Selection
In USB-PD sink applications with multiple input sources (barrel jack, USB-C, internal battery), the BSZ018NE2LSATMA1 functions as the OR-ing MOSFET that prevents back-feeding between sources. Its 25V VDS covers the 20V maximum USB-PD voltage with margin, and the low RDS(on) keeps conduction loss under 200 mW at 5A continuous load. Place the body diode reverse-biased and drive the gate from the higher of the two input rails through a simple Zener-clamp level shifter. Add a small TVS such as SMAJ24CA across drain-source to absorb cable-disconnect inductive transients.
Recommended
Hot-Swap and eFuse Circuits on 12V Distribution Rails
The BSZ018NE2LSATMA1 is well suited as the pass-MOSFET in 12V hot-swap and eFuse circuits for server, networking, and industrial equipment. Its 25V VDS rating absorbs inrush-transient overshoot when downstream bulk capacitors charge, and its 69W TC power dissipation allows sustained current limiting at 10-15A. Pair with a hot-swap controller such as the LTC4215 or LM5060 to provide programmable current limit, fault timing, and auto-retry. The exposed pad provides sufficient thermal mass to ride through 100 ms fault events without tripping thermal shutdown.
Recommended
BLDC Motor Drive Half-Bridge for Small Fans and Pumps
For 12V or 24V brushless-DC motor drives in small fans, pumps, and appliance pumps, the BSZ018NE2LSATMA1 serves as the low-side or high-side switch in a 3-phase half-bridge inverter. Its 25V VDS covers 24V industrial bus voltage with comfortable margin, and its 23A continuous rating supports motors up to 200W mechanical output. The trench OptiMOS process provides fast switching (sub-50 ns turn-off) for clean PWM at 20-50 kHz. Pair with a 3-phase gate driver such as the IRS2184SPBF or 6ED2230S12T to simplify the bootstrap-supply design.
Recommended
Automotive 12V Load Switching and Body Electronics
Although the BSZ018NE2LSATMA1 itself is not AEC-Q101 qualified, the same PG-TSDSON-8-FL footprint supports automotive-grade equivalents (BSZ018NE2LSIATMA1 industrial variant) for body-electronics modules. The 25V VDS handles automotive load-dump transients up to 35V when paired with a TVS clamp, and the low RDS(on) reduces I²R loss in headlamp, seat-heater, and window-lift driver stages. The exposed-pad package enables through-hole-like thermal performance in surface-mount reflow assembly, and the lead-free halogen-free materials meet automotive OEM material-compliance requirements.
Recommended
LED Driver and Lighting Power Stage
In commercial LED drivers (12V-24V input, 350 mA to 2 A output), the BSZ018NE2LSATMA1 functions as the main switching element in a buck or buck-boost topology. The 25V VDS covers 24V industrial LED rails with margin, and the low RDS(on) keeps conduction loss below 1% of total driver output, contributing to 5-10% efficiency improvement versus older planar MOSFETs. The PG-TSDSON-8-FL package is small enough for compact MR16 and PAR30 bulb form factors while dissipating up to 2.1W in free air at TA. Pair with a hysteretic or PFC controller for flicker-free dimming performance.
Recommended
Recommended Products Summary
Engineering reference data for BSZ018NE2LSATMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BSZ0501NS | BSZ0901NS | BSZ018NE2LSIATMA1 | ISC011N03L5SATMA1 | BSC020N03LSGATMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TSDSON-8-FL | PG-TSDSON-8-FL | PG-TSDSON-8-FL | PG-TSDSON-8-FL | PG-TSDSON-8-FL | PG-TSDSON-8-FL |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| VDS (V) | 25 | 25 | 25 | 25 | 30 | 30 |
| Continuous Drain Current ID (A) at TA | 23 | [DATA_NEEDED] | [DATA_NEEDED] | 23 | [DATA_NEEDED] | [DATA_NEEDED] |
| Power Dissipation PD (W) at TC | 69 | [DATA_NEEDED] | [DATA_NEEDED] | 69 | [DATA_NEEDED] | [DATA_NEEDED] |
| OptiMOS Generation | OptiMOS 25V | OptiMOS 25V | OptiMOS 25V | OptiMOS 25V | OptiMOS 5 30V | OptiMOS 30V |
| RDS(on) typical (mΩ) at VGS=10V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature Range (C) | -55 to +150 | -55 to +150 | -55 to +150 | -55 to +150 | -55 to +150 | -55 to +150 |
| RoHS / Lead-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
Key Differentiators
- Lowest RDS(on) in OptiMOS 25V family for low-side sync-rectifier position (vs BSZ0501NS)
- Better switching loss for high-frequency operation (vs BSZ0901NS)
- Same die with automotive and industrial qualification paths (vs BSZ018NE2LSIATMA1)
Design Notes
Estimated: At TA=25C, continuous ID=23A produces 2.1W on the JEDEC 1oz test board. The PG-TSDSON-8-FL exposed pad must be soldered to a copper pour of at least 25 mm² on top layer plus stitched thermal vias to inner layers to approach the 69W TC rating. Without proper thermal via stitching, RthJA can rise 50-100%, limiting sustained current to ~10A. Use 4-8 thermal vias in a 0.3 mm pitch array under the exposed pad, with the inner pad connected to at least 1 oz copper on the opposite side.
Keep the gate-drive loop as compact as possible: place the gate resistor (typ. 10-22 Ω) within 5 mm of the gate pin, and route the gate return path directly to the source pin rather than to a distant system ground. This minimizes loop inductance and suppresses ringing that can cause spurious turn-on and shoot-through. For high-current applications above 20A, use the PGND copper pour as a return plane and stitch multiple source pins together with via arrays under the package.
Do not exceed the absolute maximum VGS rating of ±20V; a 10V gate drive is typical but a 12V drive can accelerate long-term threshold drift. Ensure the VDS transient during turn-off stays below 25V by including adequate snubber or TVS protection on inductive loads. When measuring RDS(on) at low ID, the test current must be pulsed to avoid self-heating errors. The PG-TSDSON-8-FL package is moisture-sensitive (MSL 2 or 3 per JEDEC J-STD-020) - bake parts before assembly if the sealed bag is opened beyond the floor-life clock.
In synchronous-rectifier applications, dead-time control is critical: too short and shoot-through can damage both FETs, too long and body-diode conduction adds reverse-recovery loss. Use a gate-driver IC with programmable dead-time (such as Infineon 2ED21834S06JXUMA1) rather than relying on RC delays. Add a 100 kΩ gate-to-source pull-down resistor to ensure the MOSFET stays off during controller start-up when the gate-drive supply is not yet stable.
Compliance Information
RoHS and lead-free per Infineon OptiMOS product family documentation. Not AEC-Q100 qualified - choose IAUC60N04S6N044ATMA1 for automotive applications. Halogen-free per Infineon product page.
