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2N4857A on a board, in 3D

2N4857A

Solid State System

1 N-channel 100mA 18pF 3.5pF 300mW 40V 40Ω N-Channel TO-18 JFETs ROHS

Extended
DatasheetJLCPCBLCSCsolid-state-system/2N4857A
Category
JFETs
Package
TO-18
Pins
5

Overview

The 2N4857A is a JFET made by Solid State System in a TO-18 package with 3 pins. 1 N-channel 100mA 18pF 3.5pF 300mW 40V 40Ω N-Channel TO-18 JFETs ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:2N4857, from EasyEDA) and its footprint (EasyEDA_Cloud:TO-18-3_BD5.6_L14C1, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C17365021).

Symbol

G3S1D2
EasyEDA_Cloud:2N4857From EasyEDA

Footprint

123
EasyEDA_Cloud:TO-18-3_BD5.6_L14C1From EasyEDA

Parameters

8
Ciss-Input Capacitance
18pF
Drain Current (Idss)
100mA
FET Type
N-Channel
Gate-Source Breakdown Voltage (Vgss)
40V
Number
1 N-channel
Pd - Power Dissipation
300mW
RDS(on)
40Ω
Reverse Transfer Capacitance (Crss)
3.5pF

Order codes

1

Pinout

3
The pins of the 2N4857A
PinNameType
1SUnspecified
2DUnspecified
3GUnspecified

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Questions

Is there a KiCad symbol and footprint for the 2N4857A?

Yes. The symbol is EasyEDA_Cloud:2N4857 and the footprint EasyEDA_Cloud:TO-18-3_BD5.6_L14C1, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the 2N4857A?

TO-18, with 3 pins. Its footprint is drawn on this page.

Where is the 2N4857A datasheet?

Solid State System publishes it: the Datasheet link on this page opens it.

Where can I order the 2N4857A?

JLCPCB lists it as part C17365021, with 0 in stock; the sellers' links on this page open their listings.

What can replace the 2N4857A?

Parts like it in the library: the 2N4391 PBFREE by Central Semicon, the 2N4392 PBFREE by Central Semicon, the 2N4393 PBFREE by Central Semicon and the 2N4858A by Central Semicon. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8