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BSS138, in 3D

BSS138

onsemi

-55℃~+150℃ 1 N-channel 1.5V 2.4nC@25V 220mA 27pF 3.5Ω@10V 360mW 50V 6pF SOT-23 MOSFETs ROHS

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

Overview

The BSS138 is a MOSFET made by onsemi in a SOT-23 package with 3 pins. -55℃~+150℃ 1 N-channel 1.5V 2.4nC@25V 220mA 27pF 3.5Ω@10V 360mW 50V 6pF 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. 74,017 are in stock at JLCPCB (part C52895).

Symbol

123
Transistor_FET:BSS138From KiCad's library

Footprint

123
Package_TO_SOT_SMD:SOT-23From KiCad's library

From the datasheet

12
Drain-source, most
50 V · Drain-source voltage, absolute max · p. 1
Gate-source, most
20 V · Gate-source voltage, absolute max magnitude (±20 V) · p. 1
Drain current, most
220 mA · Continuous drain current, max at TA = 25°C · p. 1
Junction, hottest
150 °C · Operating junction temperature, max · p. 1
Junction to air (SOT-23)
350 K/W · Junction-to-ambient thermal resistance, minimum pad · p. 1
Gate threshold
1.3 V · Gate threshold voltage, typical at VDS = VGS, ID = 1 mA · p. 2
On resistance
3.5 Ω · Max at VGS = 10 V, ID = 0.22 A, TA = 25°C · p. 2
On resistance
6 Ω · Max at VGS = 4.5 V, ID = 0.22 A, TA = 25°C · p. 2
On resistance
5.8 Ω · Max at VGS = 10 V, ID = 0.22 A, TJ = 125°C · p. 2
Edge
7 ns · Fall time, typical at VDD = 30 V, ID = 0.29 A, VGS = 10 V, RGEN = 6 Ω · p. 2
Forward voltage
800 mV · Drain-source diode voltage, typical at IS = 0.44 A, VGS = 0 V · p. 2
Forward current, most
220 mA · Drain-source diode continuous forward current, max · p. 2

What it is and has

2
Transistor type
N-Channel Logic Level Enhancement Mode Field Effect Transistor · p. 1
Cell design
High density cell design for extremely low RDS(ON) · p. 1

Specifications

35
ParameterConditionsAs printedPage
Drain-Source Voltage VDSSTA=25oC unless otherwise notedmax 50 V1
Gate-Source Voltage VGSSTA=25oC unless otherwise noted; rating ±20 Vmin -20 · max 20 V1
Drain Current – Continuous IDTA=25oC; Note 1max 0.22 A1
Drain Current – Pulsed IDTA=25oCmax 0.88 A1
Maximum Power Dissipation PDTA=25oC; Note 1max 0.36 W1
Derate Above 25°C PDAbove 25°Cmax 2.8 mW/°C1
Operating and Storage Junction Temperature Range TJ, TSTGmin -55 · max 150 °C1
Maximum Lead Temperature for Soldering Purposes, 1/16” from Case for 10 Seconds TL1/16” from Case for 10 Secondsmax 300 °C1
Thermal Resistance, Junction-to-Ambient RθJASOT-23; Note 1; minimum padmax 350 °C/W1
Drain–Source Breakdown Voltage BVDSSTA = 25°C; VGS = 0 V, ID = 250 uAmin 50 V2
Breakdown Voltage Temperature Coefficient ∆BVDSS/∆TJID = 250 uA,Referenced to 25°Ctyp 72 mV/°C2
Zero Gate Voltage Drain Current IDSSTA = 25°C; VDS = 50 V, VGS = 0 Vmax 0.5 uA2
Zero Gate Voltage Drain Current IDSSVDS = 50 V, VGS = 0 V TJ = 125°Cmax 5 uA2
Zero Gate Voltage Drain Current IDSSTA = 25°C; VDS = 30 V, VGS = 0 Vmax 100 nA2
Gate–Body Leakage. IGSSTA = 25°C; VGS = ±20 V, VDS = 0 V; limit ±100 nAmax 100 nA2
Gate Threshold Voltage VGS(th)TA = 25°C; VDS = VGS, ID = 1 mA; Note 2min 0.8 · typ 1.3 · max 1.5 V2
Gate Threshold Voltage Temperature Coefficient ∆VGS(th)/∆TJID = 1 mA,Referenced to 25°C; Note 2typ -2 mV/°C2
Static Drain–Source On–Resistance RDS(on)TA = 25°C; VGS = 10 V, ID = 0.22 A; Note 2typ 0.7 · max 3.5 Ω2
Static Drain–Source On–Resistance RDS(on)TA = 25°C; VGS = 4.5 V, ID = 0.22 A; Note 2typ 1 · max 6 Ω2
Static Drain–Source On–Resistance RDS(on)VGS = 10 V, ID = 0.22 A, TJ = 125°C; Note 2typ 1.1 · max 5.8 Ω2
On–State Drain Current ID(on)TA = 25°C; VGS = 10 V, VDS = 5 V; Note 2min 0.2 A2
Forward Transconductance gFSTA = 25°C; VDS = 10V, ID = 0.22 A; Note 2min 0.12 · typ 0.5 S2
Input Capacitance CissTA = 25°C; VDS = 25 V, VGS = 0 V, f = 1.0 MHztyp 27 pF2
Output Capacitance CossTA = 25°C; VDS = 25 V, VGS = 0 V, f = 1.0 MHztyp 13 pF2
Reverse Transfer Capacitance CrssTA = 25°C; VDS = 25 V, VGS = 0 V, f = 1.0 MHztyp 6 pF2
Gate Resistance RGTA = 25°C; VGS = 15 mV, f = 1.0 MHztyp 9 Ω2
Turn–On Delay Time td(on)TA = 25°C; VDD = 30 V, ID = 0.29 A, VGS = 10 V, RGEN = 6 Ω; Note 2typ 2.5 · max 5 ns2
Turn–On Rise Time trTA = 25°C; VDD = 30 V, ID = 0.29 A, VGS = 10 V, RGEN = 6 Ω; Note 2typ 9 · max 18 ns2
Turn–Off Delay Time td(off)TA = 25°C; VDD = 30 V, ID = 0.29 A, VGS = 10 V, RGEN = 6 Ω; Note 2typ 20 · max 36 ns2
Turn–Off Fall Time tfTA = 25°C; VDD = 30 V, ID = 0.29 A, VGS = 10 V, RGEN = 6 Ω; Note 2typ 7 · max 14 ns2
Total Gate Charge QgTA = 25°C; VDS = 25 V, ID = 0.22 A, VGS = 10 V; Note 2typ 1.7 · max 2.4 nC2
Gate–Source Charge QgsTA = 25°C; VDS = 25 V, ID = 0.22 A, VGS = 10 V; Note 2typ 0.1 nC2
Gate–Drain Charge QgdTA = 25°C; VDS = 25 V, ID = 0.22 A, VGS = 10 V; Note 2typ 0.4 nC2
Maximum Continuous Drain–Source Diode Forward Current ISTA = 25°Cmax 0.22 A2
Drain–Source Diode Forward Voltage VSDTA = 25°C; VGS = 0 V, IS = 0.44 A; Note 2typ 0.8 · max 1.4 V2

Ordering codes, by the datasheet

1
BSS138
SOT-23 · Device marking SS; 7’’ reel; 8mm tape width; 3000 units · p. 1

Parameters

20
Current - Continuous Drain(Id)
220mA
Drain Source On Resistance (RDS(on)@Vgs,Id)
3.5Ω@10V,220mA
Drain to Source Voltage
50V
Forward Current(If)
220mA
Gate Charge(Qg)
2.4nC@25V
Gate Threshold Voltage (Vgs(th))
1.3V
Gate Threshold Voltage (Vgs(th)@Id)
1.5V@1mA
Input Capacitance(Ciss)
27pF
Junction Temperature(Max)
150℃
Number
1 N-channel
Operating Temperature
-55℃~+150℃
Output Capacitance(Coss)
13pF
Pd - Power Dissipation
360mW
RDS(on)
3.5Ω@10V
Reverse Transfer Capacitance (Crss@Vds)
6pF
Rise Time
7ns
Thermal Resistance(Junction to Ambient)
350℃/W
Type
N-Channel
Vgs
±20V
Voltage - Forward(Vf)
800mV

Order codes

1

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?

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

Where can I order the BSS138?

JLCPCB lists it as part C52895, with 74,017 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 Diodes Incorporated, the BSS138P by Nexperia, the BSS138K by ElecSuper and the BSS138 by ElecSuper. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

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