Diodes Incorporated DSS4160FDBQ-7

Overview

DSS4160FDBQ-7 from Diodes Incorporated is a dual NPN low-saturation transistor in U-DFN2020-6 (Type B) package, rated for 60V V_CEO, 1A continuous collector current per channel, and 180 mΩ equivalent on-resistance. It delivers V_CE(sat) < 220 mV at 1 A and supports automotive-grade power switching in thin-profile applications such as load and motor control.

For engineers reviewing the DSS4160FDBQ-7 datasheet, DSS4160FDBQ-7 pinout, DSS4160FDBQ-7 application, or DSS4160FDBQ-7 equivalent, key selection criteria include its AEC-Q101 qualification, dual-channel thermal performance (R_θJA = 51 °C/W with 28 mm × 28 mm copper), low-profile 0.6 mm height, and NiPdAu terminal finish for reliable solderability.

Technical Context

This dual NPN transistor operates as a high-efficiency, low-loss switch in DC power paths, supporting simultaneous or independent channel control. Its BV_CEO = 60 V and h_FE = 70–430 (depending on I_C) enable robust current amplification and voltage blocking in automotive and industrial load-switching topologies.

The device uses an exposed-collector thermal pad in the U-DFN2020-6 (Type B) package to achieve R_θJL = 18 °C/W and supports pulsed operation up to 1.5 A (I_CM). Its f_T = 90–175 MHz and fast switching (t_on = 105 ns, t_off = 540 ns) suit medium-speed digital control of power rails.

Key Specifications

Pinout & Package

U-DFN2020-6 (Type B) is a 6-pin, bottom-exposed thermal pad package with NiPdAu-plated terminals and moisture sensitivity level 1. The exposed collector pads (C1, C2) serve as primary thermal and electrical connection points.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NPN low-saturation transistor applications.

Compared with ZXTN2020ZTA and DMT6006LPS-13, DSS4160FDBQ-7 uniquely combines AEC-Q101 compliance, dual NPN topology in a 0.6 mm profile, and optimized low-V_CE(sat) for thermally sensitive automotive and portable applications-whereas alternatives trade off qualification, integration, or form factor.

Availability

DSS4160FDBQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery load switching, and industrial fan speed regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DSS4160FDBQ-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets.

The DSS4160FDBQ-7 belongs to Diodes' low-saturation bipolar transistor product line, engineered specifically for space- and thermal-constrained automotive power switching applications demanding AEC-Q101 compliance and consistent parametric performance across temperature.

FAQ

What is the maximum allowable junction temperature for DSS4160FDBQ-7?

The absolute maximum operating junction temperature is +150 °C, as specified in the Absolute Maximum Ratings table. This limit applies under steady-state conditions with proper PCB thermal design-specifically, using the recommended 28 mm × 28 mm 2 oz copper pad layout to achieve R_θJA = 51 °C/W. Exceeding this temperature risks permanent degradation of h_FE and increased leakage current.

Can DSS4160FDBQ-7 be used in high-frequency switching applications above 100 kHz?

Yes, but with design constraints: its f_T = 90–175 MHz and t_off = 540 ns support switching up to ~200 kHz in low-duty-cycle applications. However, V_CE(sat) increases with frequency due to minority-carrier storage effects, so efficiency drops above 100 kHz compared to MOSFET alternatives. Thermal derating must be applied per the transient thermal impedance curves.

Is the exposed thermal pad on the DSS4160FDBQ-7 electrically isolated?

No-the exposed pad is internally connected to both collectors (C1 and C2) and must be soldered to a PCB copper pour tied to the system's power ground or low-side return. This connection is essential for achieving the rated R_θJA = 51 °C/W and safe 2.47 W power dissipation. Floating or insulated mounting degrades thermal performance by >60%.

Does DSS4160FDBQ-7 require external base resistors in standard 3.3 V logic drive?

Yes-base resistors are mandatory to limit I_B within the 300 mA continuous rating. For 3.3 V logic driving I_C = 1 A with h_FE ≥ 70, a 10 Ω resistor yields ~270 mA base current, satisfying the I_B/I_C = 0.27 ratio. Undriven bases risk thermal runaway; oversized resistors cause slow switching and excessive V_CE(sat).