Skip to the content
PCBKitNew board
BSS138, in 3D

BSS138

ElecSuper

1 N-channel 1.5Ω@10V 1V 2.2pF 25pF 400mA 417mW 60V 650pC@4.5V 9.7pF N-Channel SOT-23 MOSFETs ROHS

Extended
DatasheetJLCPCBLCSCelecsuper/BSS138
Category
MOSFETs
Package
SOT-23
Pins
3

Overview

The BSS138 is a MOSFET made by ElecSuper in a SOT-23 package with 3 pins. 1 N-channel 1.5Ω@10V 1V 2.2pF 25pF 400mA 417mW 60V 650pC@4.5V 9.7pF N-Channel SOT-23 MOSFETs ROHS.

PCBKit's library has its KiCad symbol (Transistor_FET:BSS138, from KiCad's library) and its footprint (Package_TO_SOT_SMD:SOT-23, from KiCad's library), ready for a KiCad board. 358,536 are in stock at JLCPCB (part C5224260).

Symbol

123
Transistor_FET:BSS138From KiCad's library

Footprint

123
Package_TO_SOT_SMD:SOT-23From KiCad's library

From the datasheet

11
Drain-source, most
60 V · drain-source voltage, absolute maximum · p. 2
Gate-source, most
20 V · gate-source voltage, ±20 V absolute maximum · p. 2
Drain current, most
400 mA · continuous drain current at TA = 25 °C, max · p. 2
Junction, hottest
150 °C · operating junction temperature, max · p. 2
Junction to air (SOT-23)
300 K/W · junction to ambient, single operation, typical · p. 2
Gate threshold
1 V · VGS = VDS, ID = 250 uA, typical · p. 3
On resistance
1.9 Ω · VGS = 10 V, ID = 0.4 A, max · p. 3
On resistance
2.5 Ω · VGS = 4.5 V, ID = 0.2 A, max · p. 3
On resistance
4.5 Ω · VGS = 2.5 V, ID = 0.1 A, max · p. 3
Edge
19.2 ns · rise time, VGS = 10 V, VDS = 25 V, ID = 0.4 A, RG = 6 Ω, typical · p. 3
Forward voltage
860 mV · body diode, VGS = 0 V, IS = 0.5 A, typical · p. 3

Parameters

15
Current - Continuous Drain(Id)
400mA
Drain to Source Voltage
60V
Gate Charge(Qg)
650pC@4.5V
Gate Threshold Voltage (Vgs(th))
1V
Input Capacitance(Ciss)
25pF
Junction Temperature(Max)
150℃
Number
1 N-channel
Output Capacitance(Coss)
9.7pF
Pd - Power Dissipation
417mW
RDS(on)
1.5Ω@10V
Reverse Transfer Capacitance (Crss@Vds)
2.2pF
Rise Time
19.2ns
Thermal Resistance(Junction to Ambient)
300℃/W
Type
N-Channel
Voltage - Forward(Vf)
860mV

Order codes

1

Pinout

3
The pins of the BSS138
PinNameType
1GInput
2SPassive
3DPassive

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/elecsuper/BSS138" title="BSS138 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/elecsuper/BSS138.jpg" alt="BSS138" width="1200" height="900">
A picture that opens the part, for a README
[![BSS138](https://pcbkit.io/embed/parts/elecsuper/BSS138.jpg?size=s)](https://pcbkit.io/parts/elecsuper/BSS138)

Questions

Is there a KiCad symbol and footprint for the BSS138?

Yes. The symbol is Transistor_FET:BSS138 and the footprint Package_TO_SOT_SMD:SOT-23, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the BSS138?

SOT-23, with 3 pins. Its footprint is drawn on this page.

Where is the BSS138 datasheet?

ElecSuper publishes it: the Datasheet link on this page opens it.

Where can I order the BSS138?

JLCPCB lists it as part C5224260, with 358,536 in stock; the sellers' links on this page open their listings.

What can replace the BSS138?

Parts like it in the library: the BSS138K by ElecSuper, the SI2308A by UMW, the SI2310 by GOODWORK and the AS2324 by AnBon. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8