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BSS7728N

BSS7728N Description

The BSS7728N from Infineon Technologies is an N-channel MOSFET designed for low-power switching applications. Part of the SIPMOS® series, it features a 60V drain-to-source voltage (Vdss) and a continuous drain current (Id) of 200mA at 25°C. With a low input capacitance (Ciss) of 56pF @ 25V and a gate charge (Qg) of 1.5nC @ 10V, it ensures efficient switching performance. The device operates with a gate-source threshold voltage (Vgs(th)) of 2.3V @ 26µA and supports a maximum gate-source voltage (Vgs) of ±20V, making it compatible with a wide range of drive circuits.

BSS7728N Features

• Low On-Resistance: 5Ω @ 500mA, 10V (Rds On), minimizing conduction losses.
• Compact & Reliable: SOT23-3 surface-mount package, ideal for space-constrained designs.
• Fast Switching: Optimized Qg and Ciss ensure rapid turn-on/off transitions.
• Robust Protection: ±20V Vgs rating enhances durability against voltage spikes.
• Wide Operating Range: Suitable for 4.5V to 10V drive voltages.
• Compliance: REACH Unaffected, EAR99 ECCN, and MSL 1 (Unlimited) moisture sensitivity.

BSS7728N Applications

The BSS7728N excels in low-current, high-voltage applications, including:

• Power Management: Load switching in portable devices, battery protection circuits.
• Signal Switching: Analog/digital multiplexing, sensor interfaces.
• Automotive Electronics: Auxiliary systems requiring 60V tolerance.
• Industrial Controls: Relay drivers, low-power motor control.
• Consumer Electronics: Power gating in wearables, IoT modules.

Conclusion of BSS7728N

The BSS7728N is a cost-effective, high-performance MOSFET tailored for low-power, high-voltage designs. Its low Rds On, fast switching, and compact SOT23-3 package make it ideal for applications demanding efficiency and miniaturization. While marked Obsolete, it remains a viable choice for legacy or low-volume projects requiring proven Infineon SIPMOS® reliability. Engineers should evaluate alternative modern equivalents for new designs while considering this device for specific use cases.