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Product Detailed Parameters
- Description：TRANS PNP 25V 0.5A SOT23-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：25 V
- Vce Saturation (Max) @ Ib, Ic：620mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 100mA, 1V
- Power - Max：300 mW
- Frequency - Transition：-
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The BCX18LT1G is a general-purpose PNP bipolar junction transistor manufactured by onsemi. It operates with a collector-emitter voltage of 25 Vdc and a continuous collector current of 500 mAdc. The device features a DC current gain ranging from 40 to 600 depending on the collector current level. Thermal dissipation reaches 225 mW on an FR-5 board at 25°C ambient temperature. It is housed in a SOT-23 package.
Feature Summary
- Designed for general-purpose switching applications
- Compliant with RoHS standards and free of halogens and brominated flame retardants
- Qualified under AEC-Q101 standards for automotive use when prefixed with S or NSV
Applications
- General-purpose switching circuits
- Automotive electronics requiring unique site control
- Low-voltage signal processing
Procurement Notes
Verify the specific ordering prefix, as devices prefixed with S or NSV are designated for automotive applications and require AEC-Q101 qualification and PPAP capability. Confirm that the standard BCX18LT1G variant does not carry these specific automotive compliance requirements unless explicitly stated in the purchase order documentation.
Selection Notes
Select this component for low-power general-purpose applications requiring a PNP configuration within a compact surface-mount footprint. Ensure the circuit design accommodates the 25 V collector-emitter voltage limit and verify thermal management strategies for the 225 mW power dissipation rating on standard FR-5 substrates.
Part Context
This part belongs to the BCX17/BCX18/BCX19 series of general-purpose transistors. While sharing the same SOT-23 package and thermal characteristics, it differs from the BCX17 and BCX19 variants primarily in its maximum voltage ratings, which are lower than those of the other members in the family.
Replacement Considerations
BCX17LT1G (PNP, 45V), BCX19LT1G (NPN, 45V)
FAQ
What is the maximum collector-emitter voltage for the BCX18LT1G?
The maximum collector-emitter voltage (VCEO) is 25 Vdc.
How does the DC current gain vary with collector current?
The minimum DC current gain decreases as collector current increases: 100 at 100 mA, 70 at 300 mA, and 40 at 500 mA.
What marking code identifies the BCX18LT1G?
The device is marked with the code T2 on the package.
