Infineon Technologies BSZ0901NSATMA1

Overview

BSZ0901NSATMA1 from Infineon Technologies is an N-channel 30 V OptiMOS™ Power-MOSFET in TSDSON-8 FL (S3O8) package, optimized for high-frequency synchronous buck converters in server and GPU power stages. It delivers 2.6 mΩ R_DS(on) at V_GS=4.5 V, 145 A continuous drain current (T_C=25 °C), and 100% avalanche tested ruggedness.

For engineers reviewing the BSZ0901NSATMA1 datasheet, BSZ0901NSATMA1 pinout, BSZ0901NSATMA1 application, or BSZ0901NSATMA1 equivalent, key selection criteria include low Q_g×R_DS(on) figure-of-merit, thermal resistance (R_thJC = 1.8 K/W), and gate charge parameters critical for high-efficiency SMPS design at >1 MHz switching frequencies.

Technical Context

This MOSFET employs trench-gate silicon technology with optimized cell layout to minimize both conduction loss (via ultra-low R_DS(on)) and switching loss (via low Q_gd, Q_g, and C_oss). Its 1.8 K/W junction-to-case thermal resistance enables high-power density mounting on compact PCB copper areas.

The device features a gate threshold voltage of 1.2–2.0 V, supports 4.5 V logic-level drive, and integrates a robust body diode with Q_rr = 20 nC and V_SD = 0.8 V at 20 A - enabling efficient synchronous rectification in DC-DC converters without external Schottky diodes.

Key Specifications

Pinout & Package

TSDSON-8 FL (S3O8) package: 5 mm × 6 mm footprint, exposed drain pad on bottom side for optimal thermal conduction; 0.65 mm pitch, 0.8 mm height; RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 30 V power MOSFET applications.

Compared with IRLHS6342TRPBF and DMTH3007LPSQ-13, BSZ0901NSATMA1 uniquely balances ultra-low R_DS(on), industry-leading Q_g×R_DS(on) FOM, and superior thermal resistance - making it optimal for space-constrained, high-current, high-frequency VRMs where both electrical and thermal margins are simultaneously critical.

Availability

BSZ0901NSATMA1 is available at Aetrix Electronics and suitable for server VRMs, GPU power delivery, telecom DC-DC modules, and industrial motor control drivers requiring stable component supply and long-term production continuity.

Supply support for BSZ0901NSATMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs and discrete devices, with global manufacturing and quality certification to ISO/TS 16949 and JEDEC standards.

This part belongs to the OptiMOS™ 5.0 generation of low-voltage power MOSFETs, engineered specifically for high-efficiency, high-density DC-DC conversion in datacenter, computing, and communications infrastructure.

FAQ

What is the maximum recommended gate-source voltage for BSZ0901NSATMA1?

The absolute maximum V_GS is ±20 V per datasheet Table 2. For reliable long-term operation, gate drive should be limited to 10 V for standard switching and 4.5 V for logic-level applications. Exceeding 12 V risks accelerated gate oxide degradation, especially under high-temperature bias conditions.

Can BSZ0901NSATMA1 be used in parallel configurations?

Yes - its positive temperature coefficient of R_DS(on) (confirmed in Diagram 9) ensures inherent current sharing across paralleled devices. Layout must balance source inductance using Kelvin-source connections and symmetric copper pours to avoid dynamic imbalance during switching transitions.

Is the body diode suitable for continuous freewheeling operation?

The integrated body diode supports continuous forward current up to 69 A at T_C=25 °C (Table 7) and exhibits low V_SD (0.8 V typ. at 20 A). However, for sustained freewheeling above 30 A, thermal design must account for diode conduction loss separately from channel loss due to differing thermal paths.

Does BSZ0901NSATMA1 require special PCB layout considerations for thermal performance?

Yes - the exposed drain pad must be soldered to ≥6 cm² of 70 µm-thick copper on a single layer (per datasheet note 4). Thermal vias under the pad are strongly recommended to transfer heat to inner layers or backside copper, and solder mask opening over the pad must be complete to ensure void-free solder joint formation.