BSS138-7-F
The BSS138-7-F is a single N-channel MOSFET manufactured by Diodes Incorporated, categorized under Single FETs, MOSFETs. It has a 200 mA constant drain current (Id) at 25°C (Ta). The driving voltage used by the MOSFET, which is usually set at 10V, assures both the maximum and lowest Rds On properties. At room temperature (Ta), its maximum power dissipation is 300 mW. This MOSFET is frequently utilized in low-power switching applications that call for effective power dissipation and moderate current management.
Description
- BSS138-7-F, produced by Diodes Incorporated, is an N-channel MOSFET known for its efficiency and reliability in power management applications.Its many exceptional performance characteristics include low resistance and excellent switching performance, which guarantee quick operation and little power loss. It is appropriate for systems that demand effective switching and space-saving design because of its low gate threshold voltage and small SOT-23-3 packaging. It offers adaptability and dependability in a number of electronic applications and operates throughout a broad temperature range.
Key feature
- The BSS138-7-F is an N-channel MOSFET designed by Diodes Incorporated with specific characteristics tailored for efficient power management applications.
- Low On-Resistance and High Efficiency:
This MOSFET features a low on-state resistance (RDS(ON)) of 3.5 Ohms at 220 mA and 10V gate-source voltage, ensuring minimal power loss and high efficiency during operation.
- Optimized Switching Performance:
- It maintains superior switching performance due to its low gate threshold voltage of 1.5V (maximum) at 250 µA, enabling fast switching transitions essential for applications requiring quick response times.
- Low Input Capacitance:
- With a maximum input capacitance (Ciss) of 50 pF at 10V drain-source voltage, the BSS138-7-F minimizes capacitive losses, contributing to improved switching efficiency and reduced signal distortion.
- Wide Operating Temperature Range and Package Flexibility:
- Operating reliably across a wide temperature range from -55°C to 150°C (TJ), and housed in a compact SOT-23-3 package (TO-236-3, SC-59), it offers versatility in various surface-mount applications where space is limited.
Thermal Characteristics
- The BSS138-7-F transistor's thermal characteristics are crucial for understanding its heat dissipation capabilities:
- Power Dissipation (PD):
- The maximum power dissipation rating (PD) for the BSS138-7-F is 300 mW. The maximum power that the transistor may safely dissipate as heat without going over its thermal limits is indicated by this specification.
- Thermal Resistance, Junction to Ambient (θJA):
- The thermal resistance from the transistor's junction to ambient air is 417 ℃/W. The efficiency with which heat is transferred from the transistor's junction to the surrounding area is shown by this characteristic. A lower thermal resistance value indicates better heat dissipation capability.
- Operating and Storage Temperature Range:
- The BSS138-7-F operates within a temperature range of -55 to +150 ℃. The temperature range that allows a transistor to operate consistently without experiencing damage or performance deterioration is shown by this range. The parameters in which the transistor can be stored without compromising its functionality are specified by the storage temperature range.

Product parameter information
| Type | Specification |
|
Category |
Single FETs, MOSFETs |
|
Manufacturer |
Diodes Incorporated |
|
FET Type |
N-Channel |
|
Technology |
MOSFET (Metal Oxide) |
|
Drain to Source Voltage (Vdss) |
50 V |
|
Continuous Drain Current (Id) @ 25°C |
200 mA (Ta) |
|
Drive Voltage (Max Rds On, Min Rds On) |
10 V |
|
Maximum Rds On @ Id, Vgs |
3.5 Ohm @ 220 mA, 10V |
|
Threshold Voltage (Vgs(th)) (Max) @ Id |
1.5 V @ 250 µA |
|
Maximum Gate-Source Voltage (Vgs) |
±20V |
|
Input Capacitance (Ciss) (Max) @ Vds |
50 pF @ 10 V |
|
Maximum Power Dissipation |
300 mW (Ta) |
|
Operating Temperature Range |
-55°C ~ 150°C (TJ) |
|
Mounting Type |
Surface Mount |
|
Supplier Device Package |
SOT-23-3 |
|
Package / Case |
TO-236-3, SC-59, SOT-23-3 |
|
Base Product Number |
BSS138 |
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FAQ
Q: What is BSS138-7-F?
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Q: What are some common uses for BSS138-7-F?
Q: What is the BSS138-7-F's maximum power dissipation rating?
Q: Can environments with high temperatures be used with BSS138-7-F?
Q: What does the low input capacitance in BSS138-7-F mean?
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