Overview
The BSS138LT7G is an N-Channel Logic Level Enhancement Mode Field Effect Transistor (FET) produced by onsemi. This device is part of the PowerTrench® T1 family and is designed for low voltage, low current applications. It features a compact SOT-23 surface mount package, making it suitable for a variety of portable and battery-powered devices. The BSS138LT7G is known for its low on-state resistance, rugged reliability, and fast switching performance, which are critical for efficient power management and switching applications.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VDS (Drain-Source Voltage) | V | - | - | 50 |
| ID (On-State Drain Current) | A | - | - | 0.2 |
| VGS(th) (Gate Threshold Voltage) | V | 0.8 | 1.3 | 1.5 |
| RDS(on) @ VGS = 10 V | mΩ | 0.7 | 3.5 | - |
| RDS(on) @ VGS = 4.5 V | mΩ | 1.0 | 6.0 | - |
| Ciss (Input Capacitance) | pF | - | 27 | - |
| Coss (Output Capacitance) | pF | - | 13 | - |
| Crss (Reverse Transfer Capacitance) | pF | - | 6 | - |
Key Features
- Low on-state resistance (RDS(on)) of 3.5 Ω @ VGS = 10 V and 6.0 Ω @ VGS = 4.5 V.
- High density cell design for extremely low RDS(on).
- Rugged and reliable performance.
- Compact industry standard SOT-23 surface mount package.
- Pb-free and halogen-free, complying with RoHS standards.
- Fast switching performance with low turn-on and turn-off delay times.
Applications
- DC-DC converters.
- Power management in portable and battery-powered products such as computers, printers, PCMCIA cards, cellular and cordless telephones.
- Small servo motor control.
- Power MOSFET gate drivers.
- Other low voltage, low current switching applications.
Q & A
- What is the maximum drain-source voltage (VDS) of the BSS138LT7G?
The maximum drain-source voltage (VDS) is 50 V.
- What is the typical on-state drain current (ID) of the BSS138LT7G?
The typical on-state drain current (ID) is 0.2 A.
- What is the gate threshold voltage (VGS(th)) range of the BSS138LT7G?
The gate threshold voltage (VGS(th)) range is from 0.8 V to 1.5 V.
- What is the on-state resistance (RDS(on)) at VGS = 10 V?
The on-state resistance (RDS(on)) at VGS = 10 V is typically 3.5 Ω.
- What is the package type of the BSS138LT7G?
The package type is SOT-23 (TO-236).
- Is the BSS138LT7G RoHS compliant?
Yes, the BSS138LT7G is Pb-free and halogen-free, complying with RoHS standards.
- What are some typical applications of the BSS138LT7G?
Typical applications include DC-DC converters, power management in portable devices, and small servo motor control.
- What is the input capacitance (Ciss) of the BSS138LT7G?
The input capacitance (Ciss) is typically 27 pF.
- What are the turn-on and turn-off delay times of the BSS138LT7G?
The turn-on delay time is typically 2.5 ns to 5 ns, and the turn-off delay time is typically 20 ns to 36 ns.
- Is the BSS138LT7G obsolete?
Yes, the BSS138LT7G is listed as obsolete.
