Infineon Technologies BTS7904SAKSA1

Overview

BTS7904SAKSA1 from Infineon Technologies is a dual-channel automotive-grade half-bridge power switch integrating complementary P- and N-channel OptiMOS™ T MOSFETs in a single PG-TO220-5-13 package. It delivers ±40 A continuous drain current, ultra-low R_DS(on) of 7.2 mΩ (P) / 9.7 mΩ (N) at V_GS = ±10 V, and operates up to 150 °C junction temperature-enabling high-efficiency motor control in engine cooling fans and HVAC actuators.

For engineers reviewing the BTS7904SAKSA1 datasheet, BTS7904SAKSA1 pinout, BTS7904SAKSA1 application, or BTS7904SAKSA1 equivalent, key selection criteria include verified bidirectional switching capability, AEC-Q101 qualification, thermal resistance R_thJC of 1.3 K/W (P) / 1.8 K/W (N), and gate charge Q_g of –80–121 nC (P) / 82–123 nC (N) for precise PWM timing design.

Technical Context

This half-bridge integrates discrete P- and N-channel MOSFETs with matched dynamic characteristics: t_d(on) = 22 ns (P) / 15 ns (N), t_f = 150 ns (P) / 8 ns (N), and C_iss = 3900–5200 pF (P) / 4600–6100 pF (N). The device supports independent gate drive with separate source terminals, enabling asymmetric duty-cycle control and freewheeling diode utilization.

It features integrated reverse diodes with V_SD = –1.00 to –1.2 V (P) / 0.90–1.2 V (N) at I_F = ±40 A and t_rr = 41 ns (P) / 47 ns (N), supporting inductive load commutation without external flyback components in 12 V automotive systems.

Key Specifications

Pinout & Package

Package: PG-TO220-5-13 - thermally enhanced through-hole package with isolated tab, 5-pin layout, RoHS-compliant green molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge power switching applications.

Compared with BTS7904SAKSA1, BTS7960B trades sensing flexibility for slightly higher conduction loss and surface-mount convenience, while TPS2810D shifts thermal and layout responsibility to the designer-making BTS7904SAKSA1 optimal for cost-sensitive, thermally constrained automotive modules requiring integrated sensing and ruggedness.

Availability

BTS7904SAKSA1 is available at Aetrix Electronics and suitable for engine cooling fan control, HVAC actuator drive, and power seat motor interface requiring stable component supply across extended automotive production cycles.

Supply support for BTS7904SAKSA1 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 electronics, and industrial control ICs, with global manufacturing and qualification infrastructure.

The BTS7904S belongs to Infineon's PROFET™+ family of intelligent high-side/low-side switches and half-bridges, designed specifically for robust, high-current 12 V automotive body electronics with integrated protection and diagnostics.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The BTS7904SAKSA1 is rated for continuous operation up to 150 °C junction temperature, validated per AEC-Q101 stress testing. Derating curves in the datasheet define safe operating area limits above 100 °C case temperature, with R_DS(on) increasing linearly to ~16 mΩ (P) and ~18 mΩ (N) at T_j = 150 °C.

Does this device include built-in protection features such as overtemperature or short-circuit shutdown?

No-the BTS7904SAKSA1 is a bare half-bridge power stage without integrated protection circuitry. It relies on external controller-level monitoring of V_GS, current sense, and temperature feedback. Protection must be implemented via MCU-based fault detection or dedicated driver ICs like the TLE7181F.

Can the P-channel and N-channel sections be operated independently as discrete switches?

Yes-each channel has dedicated gate and source terminals, allowing independent control. However, the drains are internally tied together, so they share the same output node. This configuration supports half-bridge, high-side, or low-side switching-but not fully isolated dual-switch operation.

Is the PG-TO220-5-13 package lead-free and RoHS compliant?

Yes-the "Green package" designation in the datasheet confirms full RoHS compliance (2011/65/EU) and lead-free termination. The device meets JEDEC J-STD-020 moisture sensitivity level MSL3 and supports standard SnPb or lead-free reflow profiles when mounted on PCB with appropriate thermal relief.