STMicroelectronics STPS24045TV

Overview

STPS24045TV from STMicroelectronics is a dual power Schottky rectifier in ISOTOP™ insulated package, rated for 45 V repetitive peak reverse voltage and 2 × 120 A average forward current per diode at TC = 80 °C, with typical forward voltage of 0.52 V at 120 A and 125 °C - optimized for high-frequency DC/DC converters and low-voltage inverters.

For engineers reviewing the STPS24045TV datasheet, STPS24045TV pinout, STPS24045TV application, or STPS24045TV equivalent, key selection criteria include conduction loss (P = 0.47×IF(AV) + 0.00167×IF²(RMS)), thermal resistance (Rth(j-c) = 0.65 °C/W per diode), avalanche capability (3096 W, tp = 10 µs), and insulated isolation (2500 VRMS).

Technical Context

This dual-diode Schottky rectifier integrates two independent 45 V / 120 A channels in a single ISOTOP™ package, enabling synchronous free-wheeling or polarity protection in bidirectional power stages. Its low VF and fast switching minimize conduction and recovery losses in SMPS operating above 100 kHz.

The device features avalanche-rated operation up to 3096 W (tp = 10 µs, Tj = 125 °C) and low thermal resistance (Rth(j-c) = 0.65 °C/W per diode, Rth(c) coupling = 0.10 °C/W), allowing parallel diode operation with predictable junction temperature rise under shared heatsink conditions.

Key Specifications

Pinout & Package

STPS24045TV uses the ISOTOP™ package: a 4-terminal insulated metal-base power package with four M4 mounting screws, epoxy meeting UL94 V0, and recommended torque of 1.3 N·m. Dimensions: 38.0 mm × 25.3 mm × 12.0 mm (L × W × H), weight 27 g (without screws).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Schottky rectifier applications.

Compared with VS-240MT45 and NTTS24045S, STPS24045TV uniquely combines per-diode 120 A rating, 2500 VRMS isolation, and 0.52 V VF - making it optimal for space-constrained, safety-isolated, high-efficiency dual-rail DC/DC systems where thermal and electrical separation are mandatory.

Availability

STPS24045TV is available at Aetrix Electronics and suitable for server power supplies, solar microinverters, industrial motor drives, and EV on-board chargers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STPS24045TV 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The STPS24045TV belongs to ST's high-power Schottky rectifier product line, engineered specifically for high-frequency, high-current DC/DC conversion where low VF, avalanche ruggedness, and thermal reliability are critical.

FAQ

What is the maximum junction temperature and how is thermal derating defined?

The absolute maximum junction temperature is 150 °C. Thermal derating follows the condition (dPtot/dTj) < (1/Rth(j-a)) to avoid thermal runaway. For single-diode operation on a heatsink, use Rth(j-c) = 0.65 °C/W and Rth(c) = 0.10 °C/W to calculate coupled heating effects when both diodes conduct simultaneously.

Can STPS24045TV be used in parallel with another unit for higher current?

No - STPS24045TV is not designed for parallel connection across units due to mismatched VF drift with temperature. Instead, its dual-diode architecture supports internal current sharing between A1/K1 and A2/K2 channels when properly balanced via PCB layout and symmetric thermal coupling to a common heatsink.

Does the ISOTOP™ package require thermal interface material?

Yes - ST recommends using thermally conductive grease or phase-change pad between the metal base and heatsink. The ISOTOP™ base is electrically isolated but thermally conductive; proper interface ensures Rth(j-c) remains at 0.65 °C/W per diode and prevents localized hot spots under 120 A load.

How is avalanche capability tested and what real-world events does it protect against?

Avalanche capability is verified per JEDEC JESD24-11 at 3096 W (tp = 10 µs, Tj = 125 °C). It protects against inductive turn-off spikes in motor drives, relay coil de-energization, and transformer leakage inductance kickback - eliminating need for external TVS or RC snubbers in most industrial 48 V systems.