Datasheets
BSS138 by:

Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, SOT-23, 3 PIN

Part Details for BSS138 by Fairchild Semiconductor Corporation

Results Overview of BSS138 by Fairchild Semiconductor Corporation

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BSS138 Information

BSS138 by Fairchild Semiconductor Corporation is a Small Signal Field-Effect Transistor.
Small Signal Field-Effect Transistors are under the broader part category of Transistors.

A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.

Price & Stock for BSS138

Part # Distributor Description Stock Price Buy
Bristol Electronics   19478
RFQ
Bristol Electronics   3577
RFQ
Bristol Electronics   2550
RFQ
Bristol Electronics   1818
RFQ
Quest Components 200 MA, 50 V, N-CHANNEL, SI, SMALL SIGNAL, MOSFET 2360
  • 1 $0.3400
  • 38 $0.1530
  • 328 $0.1020
$0.1020 / $0.3400 Buy Now
Quest Components 200 MA, 50 V, N-CHANNEL, SI, SMALL SIGNAL, MOSFET 1976
  • 1 $0.4730
  • 27 $0.2129
  • 236 $0.1419
$0.1419 / $0.4730 Buy Now
Quest Components 200 MA, 50 V, N-CHANNEL, SI, SMALL SIGNAL, MOSFET 1700
  • 1 $0.4000
  • 32 $0.1800
  • 279 $0.1200
$0.1200 / $0.4000 Buy Now
Quest Components 200 MA, 50 V, N-CHANNEL, SI, SMALL SIGNAL, MOSFET 1472
  • 1 $0.1360
  • 99 $0.0850
  • 589 $0.0612
$0.0612 / $0.1360 Buy Now
Quest Components 200 MA, 50 V, N-CHANNEL, SI, SMALL SIGNAL, MOSFET 404
  • 1 $0.3400
  • 16 $0.1700
  • 60 $0.1020
$0.1020 / $0.3400 Buy Now
ComSIT USA N-Channel Logic Level Enhancement Mode Field Effect Transistor Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET ECCN: EAR99 RoHS: Compliant Stock DE - 8000
Stock ES - 18253
Stock US - 0
Stock MX - 0
Stock CN - 0
Stock HK - 0
RFQ
NexGen Digital   2825
RFQ
DISTI # SMC-BSS138
Sensible Micro Corporation AS6081 Certified Vendor, 1 Yr Warranty RoHS: Not Compliant Min Qty: 25 Lead time: 2 Weeks, 0 Days 4713
RFQ
Chip 1 Exchange INSTOCK 2440
RFQ
Win Source Electronics MOSFET N-CH 50V 220MA SOT-23 42914
  • 1,555 $0.0372
  • 3,315 $0.0349
  • 5,155 $0.0336
  • 7,385 $0.0313
  • 9,620 $0.0300
  • 12,000 $0.0289
$0.0289 / $0.0372 Buy Now

Part Details for BSS138

BSS138 CAD Models

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BSS138 Part Data Attributes

BSS138 Fairchild Semiconductor Corporation
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BSS138 Fairchild Semiconductor Corporation Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, SOT-23, 3 PIN
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Transferred
Ihs Manufacturer FAIRCHILD SEMICONDUCTOR CORP
Part Package Code SOT-23
Package Description SOT-23, 3 PIN
Pin Count 3
Manufacturer Package Code 3LD, SOT23, JEDEC TO-236, LOW PROFILE
Reach Compliance Code compliant
ECCN Code EAR99
Additional Feature LOGIC LEVEL COMPATIBLE
Configuration SINGLE WITH BUILT-IN DIODE
DS Breakdown Voltage-Min 50 V
Drain Current-Max (ID) 0.22 A
Drain-source On Resistance-Max 6 Ω
FET Technology METAL-OXIDE SEMICONDUCTOR
Feedback Cap-Max (Crss) 10 pF
JESD-30 Code R-PDSO-G3
JESD-609 Code e3
Moisture Sensitivity Level 1
Number of Elements 1
Number of Terminals 3
Operating Mode ENHANCEMENT MODE
Operating Temperature-Max 150 °C
Package Body Material PLASTIC/EPOXY
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 260
Polarity/Channel Type N-CHANNEL
Power Dissipation-Max (Abs) 0.36 W
Qualification Status Not Qualified
Surface Mount YES
Terminal Finish MATTE TIN
Terminal Form GULL WING
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30
Transistor Application SWITCHING
Transistor Element Material SILICON

Alternate Parts for BSS138

This table gives cross-reference parts and alternative options found for BSS138. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of BSS138, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LBSS138LT1 LRC Leshan Radio Co Ltd Check for Price Power Field-Effect Transistor, N-Channel, Metal-oxide Semiconductor FET, BSS138 vs LBSS138LT1
BSS138LT3G onsemi $0.0565 Single N-Channel Logic Level Power MOSFET 50V, 200mA, 3.5Ω, SOT-23 (TO-236) 3 LEAD, 10000-REEL BSS138 vs BSS138LT3G
BSS138/S62Z Texas Instruments Check for Price 220mA, 50V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB BSS138 vs BSS138/S62Z
BSS138TR Fairchild Semiconductor Corporation Check for Price Small Signal Field-Effect Transistor, N-Channel, Metal-oxide Semiconductor FET, BSS138 vs BSS138TR
BSS138 Vishay Semiconductors Check for Price Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, TO-236AB, PLASTIC PACKAGE-3 BSS138 vs BSS138
BSS138 National Semiconductor Corporation Check for Price TRANSISTOR 220 mA, 50 V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB, FET General Purpose Small Signal BSS138 vs BSS138
Part Number Manufacturer Composite Price Description Compare
BSS138 Texas Instruments Check for Price 220mA, 50V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB BSS138 vs BSS138
BSS138/S62Z National Semiconductor Corporation Check for Price TRANSISTOR 220 mA, 50 V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB, FET General Purpose Small Signal BSS138 vs BSS138/S62Z
BSS138_F085 onsemi Check for Price N-Channel Logic Level Enhancement Mode Field Effect Transistor, SOT-23 3L, 15000-TAPE REEL BSS138 vs BSS138_F085
BSS138/D87Z National Semiconductor Corporation Check for Price TRANSISTOR 220 mA, 50 V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB, FET General Purpose Small Signal BSS138 vs BSS138/D87Z
BSS138T/R13 PanJit Semiconductor Check for Price Small Signal Field-Effect Transistor, 0.3A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, ROHS COMPLIANT PACKAGE-3 BSS138 vs BSS138T/R13
BSS138 Infineon Technologies AG Check for Price Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, SOT-23, 3 PIN BSS138 vs BSS138
BSS138L onsemi $0.0534 Single N-Channel Logic Level Power MOSFET 50V, 200mA, 3.5Ω, SOT-23 (TO-236) 2.90x1.30x1.00, 1.90P, 3000-REEL BSS138 vs BSS138L
BSS138D87Z Fairchild Semiconductor Corporation Check for Price Small Signal Field-Effect Transistor, 0.22A I(D), 50V, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, BSS138 vs BSS138D87Z
BSS138/L99Z National Semiconductor Corporation Check for Price TRANSISTOR 220 mA, 50 V, N-CHANNEL, Si, SMALL SIGNAL, MOSFET, TO-236AB, FET General Purpose Small Signal BSS138 vs BSS138/L99Z
BSS138-13-F Diodes Incorporated $0.1078 Small Signal Field-Effect Transistor, BSS138 vs BSS138-13-F

Resources and Additional Insights for BSS138

Reference Designs related to BSS138

  • 15W Qi transmitter for charging smartphones
    The 15W wireless power transmitter evaluation module is a high-performance, easy-to-use development kit designed for applications up to 15W of power transfer. It supports an input voltage range of 9-12V and is compatible with QC 3.0 adapters.

BSS138 Related Parts

BSS138 Frequently Asked Questions (FAQ)

  • The BSS138 can operate safely between -55°C to 150°C, but the recommended operating temperature range is -40°C to 125°C.

  • To ensure the BSS138 is fully turned on, the gate-source voltage (Vgs) should be at least 4.5V for a logic-level FET, and the drain-source voltage (Vds) should be within the recommended operating range.

  • The maximum continuous drain current (Id) for the BSS138 is 1.4A, but it can handle up to 3.5A for short pulses (less than 10ms).

  • To protect the BSS138 from overvoltage and ESD, use a voltage regulator or a zener diode to limit the voltage, and consider adding ESD protection devices such as TVS diodes or ESD arrays.

  • Yes, the BSS138 can be used as a switch for high-frequency signals, but be aware of the device's parasitic capacitance and inductance, and consider using a gate driver or a dedicated high-frequency switch FET.

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