transistors thyristors

BSS138

Full part number: BSS138PS

Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.

00 — Overview

What the BSS138 does

The BSS138PS is a 60 V, 320 mA dual N-channel Trench MOSFET in an SOT363 package. It features logic-level compatibility, very fast switching, and AEC-Q101 qualification. Key parameters include a 60 V drain-source voltage, ±20 V gate-source voltage, 320 mA continuous drain current, and 0.9 Ω typical on-state resistance. This component serves as a relay driver, high-speed line driver, low-side load switch, or general switching circuit element.

Next step
Start building with BSS138 → Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
01 — Key specifications

Datasheet parameters

Datasheet parameters for BSS138
ParameterMinTypMaxConditionsSource
rds on 900 mOhm 1.6 Ohm Tj = 25 °C; VGS = 10 V; ID = 300 mA; rdson Nexperia datasheet, p. 1 — Table 1. Quick reference data
operating temperature (abs max) -55 °C 150 °C tamb; Per device Nexperia datasheet, p. 3 — Table 5. Limiting values ...continued
power dissipation (abs max) 280 mW [2]; ptot; Limiting values ... Nexperia datasheet, p. 3 — Table 5. Limiting values ...continued
reverse leakage current 1 µA Tj = 25 °C; idss; Static characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
breakdown voltage ds 60 V ID = 10 μA; VGS = 0 V; v(br); Static characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
drain current 320 mA Tamb = 25 °C; VGS = 10 V; id Nexperia datasheet, p. 1 — Table 1. Quick reference data
vgs threshold 900 mV 1.2 V 1.5 V ID = 250 μA; VDS = VGS; vgs(th); Static characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
input capacitance 38 pF 50 pF VGS = 0 V; VDS = 10 V; ; ciss; Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
output capacitance 7 pF f = 1 MHz; coss; Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
reverse transfer capacitance 4 pF crss; Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
gate charge 720 pC 800 pC ID = 300 mA; ; qg(tot); Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
rise time 3 ns RL = 250 Ω; ; tr; Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
fall time 4 ns RG = 6 Ω; tf; Dynamic characteristics Nexperia datasheet, p. 6 — Table 7. Characteristics
02 — Alternatives

Closest matches to BSS138

2N7002K 2.5× higher fall time, 2.4× lower gate charge, 1.7× lower output capacitance
2N7002K-T1 2.5× higher fall time, 2.4× lower gate charge, 1.7× lower output capacitance
2N7002 3.2× lower gate charge, 3.1× higher rds on, 3.0× higher power dissipation
T2N7002BK 4.2× higher fall time, 3.2× higher operating temperature, 3.1× lower reverse transfer capacitance
BSS138W 6.0× higher rise time, 3.9× higher rds on, 3.5× higher fall time
RK7002BM 7.0× higher fall time, 2.5× lower input capacitance, 2.0× lower reverse transfer capacitance
BSS123 10.0× lower reverse leakage current, 6.7× higher rds on, 4.0× higher fall time
2SK3018 20.0× higher fall time, 11.7× higher rise time, 8.9× higher rds on
03 — FAQ

Frequently asked questions

What is the breakdown voltage ds for the BSS138PS?

The breakdown voltage ds is 60 V at ID = 10 μA; VGS = 0 V; v(br); Static characteristics.

What is the drain current (id) when Tamb = 25 °C and VGS = 10 V?

The drain current is 320 mA.

What is the fall time (tf) when RG = 6 Ω?

The fall time is 4 ns.

What is the total gate charge (Qg) for the BSS138PS when ID = 300 mA?

The total gate charge (Qg) is 720 pC when ID = 300 mA.

What is the input capacitance (Ciss) of the BSS138PS?

The input capacitance is 38 pF at VGS = 0 V and VDS = 10 V.

What is the maximum operating temperature (tamb) per device?

The operating temperature is 150 °C.

What is the output capacitance (Coss) of the BSS138PS at f = 1 MHz?

The output capacitance (Coss) is 7 pF at f = 1 MHz.

What is the power dissipation of the BSS138PS?

The power dissipation is 280 mW.

What is the maximum on-resistance (rds on) of the BSS138PS at Tj = 25 °C, VGS = 10 V, and ID = 300 mA?

The rds on is 900 mOhm.

What is the reverse leakage current (idss) at Tj = 25 °C?

The reverse leakage current is 1 µA at Tj = 25 °C.

What is the reverse transfer capacitance (crss) under Dynamic characteristics?

The reverse transfer capacitance (crss) is 4 pF under Dynamic characteristics.

What is the rise time (tr) when RL = 250 Ω?

The rise time is 3 ns.

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