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BSS138 on a board, in 3D

BSS138

Diodes Incorporated

-55℃~+150℃ 1 N-channel 1.2V 1.4Ω@10V 200mA 25pF 300mW 50V 50pF 8pF SOT-23 MOSFETs ROHS

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

Overview

The BSS138 is a MOSFET made by Diodes Incorporated in a SOT-23 package with 3 pins. -55℃~+150℃ 1 N-channel 1.2V 1.4Ω@10V 200mA 25pF 300mW 50V 50pF 8pF 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. 406,324 are in stock at JLCPCB (part C40912).

Symbol

123
Transistor_FET:BSS138From KiCad's library

Footprint

123
Package_TO_SOT_SMD:SOT-23From KiCad's library

From the datasheet

7
Drain-source, most
50 V · Drain-source voltage, absolute max · p. 2
Gate-source, most
20 V · Gate-source voltage, continuous absolute max magnitude · p. 2
Drain current, most
200 mA · Continuous drain current, max at TA = +25°C · p. 2
On resistance
1.4 Ω · Typical at VGS = 10V, ID = 0.22A · p. 2
Gate threshold
1.2 V · Typical at VDS = VGS, ID = 250uA · p. 2
Junction, hottest
150 °C · Operating junction temperature, max · p. 2
Junction to air (SOT23 (Standard))
417 K/W · Junction to ambient, specified value; Note 5 PCB mounting · p. 2

What it is and has

3
Package
SOT23 · p. 1
Compliance
Lead-free and RoHS compliant · p. 1
Material
Halogen and antimony free · p. 1

Specifications

20
ParameterConditionsAs printedPage
Drain-Source Voltage VDSSTA = +25°Cmax 50 V2
Drain-Gate Voltage VDGRRGS  20kΩ; TA = +25°Cmax 50 V2
Gate-Source Voltage VGSSContinuous; TA = +25°Cmin -20 · max 20 V2
Gate-Source Voltage VGSSNon Repetitive, Pulse Width<50s; TA = +25°Cmin -40 · max 40 V2
Drain Current IDContinuous; TA = +25°Cmax 200 mA2
Pulsed Drain Current IDM10us Pulse Duty Cycle = 1%; TA = +25°Cmax 1 A2
Power Dissipation (Note 5) PDTA = +25°C; Note 5 PCB mountingmax 300 mW2
Thermal Resistance, Junction to Ambient (Note 5) RJASOT23 (Standard); TA = +25°C; Note 5 PCB mountingmax 417 C/W2
Operating and Storage Temperature Range TJ, TSTGmin -55 · max 150 C2
Drain-Source Breakdown Voltage BVDSSVGS = 0V, ID = 250A; TA = +25°C; Note 6min 50 · typ 75 V2
Zero Gate Voltage Drain Current IDSSVDS = 50V, VGS = 0V; TA = +25°C; Note 6max 0.5 uA2
Gate-Body Leakage IGSSVGS = 20V, VDS = 0V; TA = +25°C; Note 6; maximum leakage magnitudemax 100 nA2
Gate Threshold Voltage VGS(TH)VDS = VGS, ID = 250A; TA = +25°C; Note 6min 0.5 · typ 1.2 · max 1.5 V2
Static Drain-Source On-Resistance RDS(ON)VGS = 10V, ID = 0.22A; TA = +25°C; Note 6typ 1.4 · max 3.5 Ω2
Forward Transconductance gFSVDS = 25V, ID = 0.2A, f = 1.0kHz; TA = +25°C; Note 6min 100 mS2
Input Capacitance CissVDS = 10V, VGS = 0V, f = 1.0MHz; TA = +25°C; Note 7max 50 pF2
Output Capacitance CossVDS = 10V, VGS = 0V, f = 1.0MHz; TA = +25°C; Note 7max 25 pF2
Reverse Transfer Capacitance CrssVDS = 10V, VGS = 0V, f = 1.0MHz; TA = +25°C; Note 7max 8 pF2
Turn-On Delay Time tD(ON)VDD = 30V, ID = 0.2A, RGEN = 50Ω; TA = +25°C; Note 7max 20 ns2
Turn-Off Delay Time tD(OFF)VDD = 30V, ID = 0.2A, RGEN = 50Ω; TA = +25°C; Note 7max 20 ns2

Ordering codes, by the datasheet

2
BSS138-7-F
SOT23 (Standard) · 3000 units, Tape & Reel · p. 1
BSS138-13-F
SOT23 (Standard) · 10000 units, Tape & Reel · p. 1

Parameters

16
Current - Continuous Drain(Id)
200mA
Drain Source On Resistance (RDS(on)@Vgs,Id)
3.5Ω@10V,220mA
Drain to Source Voltage
50V
Gate Threshold Voltage (Vgs(th))
1.2V
Gate Threshold Voltage (Vgs(th)@Id)
1.5V@250μA
Input Capacitance(Ciss)
50pF
Junction Temperature(Max)
150℃
Number
1 N-channel
Operating Temperature
-55℃~+150℃
Output Capacitance(Coss)
25pF
Pd - Power Dissipation
300mW
RDS(on)
1.4Ω
Reverse Transfer Capacitance (Crss@Vds)
8pF
Thermal Resistance(Junction to Ambient)
417℃/W
Type
N-Channel
Vgs
±20V

Order codes

2

Pinout

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

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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?

Diodes Incorporated publishes it: the Datasheet link on this page opens it.

Where can I order the BSS138?

JLCPCB lists it as part C40912, with 406,324 in stock; the sellers' links on this page open their listings.

What can replace the BSS138?

Parts like it in the library: the 2N7002K by MDD, the 2N7002K by hongjiacheng, the BSS138 by hongjiacheng and the 2N7002K by Diodes Incorporated. Check their datasheets: a part that fits the footprint may still differ in its ratings.

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