BSS123
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the BSS123 family does
The BSS123 is an N-channel MOSFET in the SOT-23 package designed for portable devices and power management. It features a 100 V drain-source voltage, 0.17 A drain current, and less than 6 Ω on-resistance at 10 V gate drive. This component supports a junction temperature range of -55 to +150 °C. Engineers typically use it for battery protection, load switching, and DC/DC converter applications. The device utilizes trench power low-voltage MOSFET technology to ensure efficient operation in compact circuits.
BSS123 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| rds on | — | — | 6 Ohm | VGS = 10V, ID = 0.17A; (on); ☑ Ordering Information | Hongjiacheng datasheet, p. 2 — ☑ Ordering Information |
| forward voltage | — | — | 1.3 V | IS = 0.34A, VGS = 0V; ☑ Ordering Information | Hongjiacheng datasheet, p. 2 — ☑ Ordering Information |
| operating temperature (abs max) | -55 °C | — | 150 °C | Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified) | |
| power dissipation (abs max) | — | — | 680 mW | • Maximum Ratings (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified) |
| reverse leakage current | — | — | 100 nA | VDS = 100V, VGS = 0V; zero; ☑ Ordering Information | Hongjiacheng datasheet, p. 2 — ☑ Ordering Information |
| breakdown voltage ds | 100 V | — | — | VGS = 0V, ID = 250μA; ☑ Ordering Information | Hongjiacheng datasheet, p. 2 — ☑ Ordering Information |
| drain current (abs max) | — | — | 170 mA | • Maximum Ratings (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 1 — • Maximum Ratings (Ta=25°C Unless otherwise specified) |
| vgs threshold | 800 mV | 1.4 V | 2.8 V | VDS = VGS, ID = 250μA; gate(th); ☑ Ordering Information | Hongjiacheng datasheet, p. 2 — ☑ Ordering Information |
| input capacitance | — | 22 pF | 60 pF | VDS = 25VVGS = 0Vf = 1MHZ; • Dynamic Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Dynamic Parameters (Ta=25°C Unless otherwise specified) |
| output capacitance | — | 3.5 pF | 15 pF | VDS = 25VVGS = 0Vf = 1MHZ; • Dynamic Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Dynamic Parameters (Ta=25°C Unless otherwise specified) |
| reverse transfer capacitance | — | 2 pF | 6 pF | VDS = 25VVGS = 0Vf = 1MHZ; • Dynamic Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Dynamic Parameters (Ta=25°C Unless otherwise specified) |
| gate charge | — | 1.4 nC | 2 nC | VGS = 10VVDS = 30VID = 0.28A; • Switching Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Switching Parameters (Ta=25°C Unless otherwise specified) |
| rise time | — | — | 8 ns | VDD = 30V, VGS = 10V, ID = 0.28A, RGEN = 50Ω; turn; • Switching Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Switching Parameters (Ta=25°C Unless otherwise specified) |
| fall time | — | — | 16 ns | VDD = 30V, VGS = 10V, ID = 0.28A, RGEN = 50Ω; turn; • Switching Parameters (Ta = 25°C Unless otherwise specified) | Hongjiacheng datasheet, p. 2 — • Switching Parameters (Ta=25°C Unless otherwise specified) |
BSS123 frequently asked questions
What is the breakdown voltage ds for the BSS123?
The breakdown voltage ds is 100 V at VGS = 0V, ID = 250μA.
What is the maximum drain current of the BSS123 at Ta = 25°C?
The maximum drain current is 170 mA.
What is the fall time of the BSS123 under the conditions VDD = 30V, VGS = 10V, ID = 0.28A, RGEN = 50Ω at Ta = 25°C?
The fall time is 16 ns.
What is the forward voltage of the BSS123 when IS = 0.34A and VGS = 0V?
The forward voltage is 1.3 V.
What is the gate charge of the BSS123 when VGS = 10V, VDS = 30V, and ID = 0.28A?
The gate charge is 1.4 nC.
What is the input capacitance of the BSS123?
The input capacitance is 22 pF at VDS = 25V, VGS = 0V, and f = 1MHz.
What is the maximum operating temperature for the BSS123?
The operating temperature is 150 °C.
What is the output capacitance of the BSS123 when VDS = 25V, VGS = 0V, and f = 1MHz?
The output capacitance is 3.5 pF.
What is the maximum power dissipation of the BSS123 at Ta = 25°C?
The maximum power dissipation is 680 mW at Ta = 25°C.
What is the maximum on-resistance (rds on) of the BSS123?
The rds on is 6 Ohm at VGS = 10V and ID = 0.17A.
What is the reverse leakage current of the BSS123?
The reverse leakage current is 100 nA at VDS = 100V and VGS = 0V.
What is the reverse transfer capacitance of the BSS123 when VDS = 25V, VGS = 0V, and f = 1MHz at Ta = 25°C?
The reverse transfer capacitance is 2 pF.