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DSS4320T-7

Public Made by Adom

by adom

Diodes Incorporated Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DSS4320T-7

Diodes Incorporated · Bipolar (BJT) · SOT-23

DSS4320T-7 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 B input Base of the NPN transistor, shown at the bottom-left of the top-view schematic; VEBO max 5 V and continuous base current IB max 0.5 A.
2 E passive Emitter of the NPN transistor, shown at the bottom-right of the top-view schematic; emitter-base voltage limited to 5 V.
3 C passive Collector of the NPN transistor, shown at the top of the top-view schematic; VCEO 20 V, VCBO 20 V, continuous IC 2 A, peak ICM 5 A.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Collector-Base Voltage VCBO 20 V 1
Collector-Emitter Voltage VCEO 20 V 1
Emitter-Base Voltage VEBO 5 V 1
Peak Pulse Current ICM 5 A 1
Repetitive Peak Pulse Current ICRP 3 A Note 3: pulse width ≤ 100ms, duty cycle ≤ 0.25 1
Continuous Collector Current IC 2 A 1
Base Current IB 0.5 A 1
Power Dissipation PD 600 mW (Note 4) @ TA = 25°C; device mounted on FR-4 PCB with minimum recommended pad layout 1
Thermal Resistance, Junction to Ambient Air RθJA 209 °C/W (Note 4) @ TA = 25°C 1
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 1
Collector-Base Cutoff Current ICBO 100 nA VCB = 20V, IE = 0 2
Collector-Base Cutoff Current ICBO 50 μA VCB = 20V, IE = 0, TA = 150°C 2
Emitter-Base Cutoff Current IEBO 100 nA VEB = 5V, IC = 0 2
Collector-Base Breakdown Voltage V(BR)CBO 20 V IC = 100μA 2
Collector-Emitter Breakdown Voltage V(BR)CEO 20 V IC = 10mA 2
Emitter-Base Breakdown Voltage V(BR)EBO 5 V IE = 100μA 2
DC Current Gain hFE 220 VCE = 2V, IC = 0.1A 2
DC Current Gain hFE 200 VCE = 2V, IC = 2A 2
DC Current Gain hFE 150 VCE = 2V, IC = 3A 2
Collector-Emitter Saturation Voltage VCE(SAT) 70 mV IC = 0.5A, IB = 50mA 2
Collector-Emitter Saturation Voltage VCE(SAT) 120 mV IC = 1A, IB = 50mA 2
Collector-Emitter Saturation Voltage VCE(SAT) 230 mV IC = 2A, IB = 40mA 2
Collector-Emitter Saturation Voltage VCE(SAT) 70 210 mV IC = 2A, IB = 200mA 2
Collector-Emitter Saturation Voltage VCE(SAT) 310 mV IC = 3A, IB = 300mA 2
Equivalent On-Resistance RCE(SAT) 35 105 mΩ IE = 2A, IB = 200mA 2
Base-Emitter Saturation Voltage VBE(SAT) 1.1 V IC = 2A, IB = 40mA 2
Base-Emitter Saturation Voltage VBE(SAT) 1.2 V IC = 3A, IB = 300mA 2
Base-Emitter Turn-on Voltage VBE(ON) 1.2 V VCE = 2V, IC = 1A 2
Transition Frequency fT 100 MHz VCE = 5V, IC = 100mA, f = 100MHz 2
Output Capacitance Cob 35 pF VCB = 10V, f = 1MHz 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts Copper tin • Terminals: Finish, Matte Tin annealed over Copper leadframe. 1

CAD (KiCad official)

  • Symbol: DSS4320T-7
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: dss4320t-7-etched.step / dss4320t-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); dss4320t-7.step / dss4320t-7.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (5 pp, sha256 d9d7940625bf5c5e, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF