Overview
The BSS138 is a MOSFET made by TDD in a SOT-23 package with 3 pins. 1 N-channel 1.5pF 1V 23.8pF 3.9pF 300mW 500mA 50V 900mΩ@10V 930pC N-Channel ±12V 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. 3,000 are in stock at JLCPCB (part C55099176).
Symbol
Footprint
Pinout
3| Pin | Name | Type |
|---|---|---|
| 1 | G | Input |
| 2 | S | Passive |
| 3 | D | Passive |
Parts like it
8SQ2361CEES-T1_GE3
SOT-23SOT-23 MOSFETs ROHSVishay IntertechnologyMOSFETs2N7002KS
SOT-23SOT-23 MOSFETs ROHSDongChenMOSFETsSI2392ADS-T1-GE3
SOT-23SOT-23 MOSFETs ROHSElecSuperMOSFETsFDN5618P
SOT-23SOT-23 MOSFETs ROHShongjiachengMOSFETsBSS138BK,215-JSM
SOT-231 N-channel 1.6V 1.9Ω@10V 305pC 30pF 3pF 4.2pF 500mA 60V 830mW N-Channel Standalone ±20V SOT-23 MOSFETs ROHSJSMSEMIMOSFETsBSS138BK-JSM
SOT-231 N-channel 1.6V 1.9Ω@10V 305pC 30pF 3pF 4.2pF 500mA 60V 830mW N-Channel Standalone ±20V SOT-23 MOSFETs ROHSJSMSEMIMOSFETsBSS138P-JSM
SOT-231 N-channel 1.6V 1.9Ω@10V 305pC 30pF 3pF 4.2pF 500mA 60V 830mW N-Channel Standalone ±20V SOT-23 MOSFETs ROHSJSMSEMIMOSFETsBSS84AK-TP
SOT-23-55℃~+150℃ 1 P-Channel 1.3Ω@10V 1W 2.4nC 2.9pF 2V 35pF 4.9pF 500mA 60V P-Channel Standalone ±25V SOT-23 MOSFETs ROHSMicro Commercial ComponentsMOSFETs
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 can I order the BSS138?
JLCPCB lists it as part C55099176, with 3,000 in stock; the sellers' links on this page open their listings.
What can replace the BSS138?
Parts like it in the library: the SQ2361CEES-T1_GE3 by Vishay Intertechnology, the 2N7002KS by DongChen, the SI2392ADS-T1-GE3 by ElecSuper and the FDN5618P by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.