BSS138K vs BSS138LT1G

This in-depth comparison of the BSS138K and BSS138LT1G provides valuable insights into their specifications and key features. We cover important factors in detail, including RoHS compliance, REACH status, series, mounting style, package type, and other relevant characteristics. Presenting the differences side by side simplifies component selection, making it easier for you to select the best option for your specific application.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Parts at a glance

ISO9001 Quality Control ISO45001 ISO14001 100% Genuine
Part A

BSS138K

Fairchild Semiconductor

Lifecycle
Active
Stock
4504 PCS
Package
SOT-23
Series
Transistors - FETs, MOSFETs - Single
+BOM RFQ
Part B

BSS138LT1G

onsemi

Lifecycle
Active
Stock
2952 PCS
Package
SOT-23-3
Series
Transistors - FETs, MOSFETs - Single
+BOM RFQ

Need help validating a replacement?

Send your BOM and application constraints for technical and sourcing review.

RFQ Contact technical support

Full specification comparison

Use manufacturer datasheets as the final authority.

Specification BSS138K BSS138LT1G
Part Status Active Active
FET Type N-Channel N-Channel
Technology MOSFET (Metal Oxide) MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss) 50 V 50 V
Current - Continuous Drain(Id) @ 25°C 220mA (Ta) 200mA (Ta)
Drive Voltage(Max Rds On Min Rds On) 1.8V, 2.5V 5V
Rds On(Max) @ Id Vgs 1.6Ohm @ 50mA, 5V 3.5Ohm @ 200mA, 5V
Vgs(th)(Max) @ Id 1.2V @ 250µA 1.5V @ 1mA
Gate Charge(Qg)(Max) @ Vgs 2.4 nC @ 10 V -
Vgs(Max) ±12V ±20V
Input Capacitance(Ciss)(Max) @ Vds 58 pF @ 25 V 50 pF @ 25 V
Power Dissipation (Max) 350mW (Ta) 225mW (Ta)
Operating Temperature -55°C ~ 150°C (TJ) -55°C ~ 150°C (TJ)
Mounting Type Surface Mount Surface Mount
Compare RFQ