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Product Detailed Parameters
- Description：TRANS PNP 30V 0.1A SOT-23-3
- Series：-
- Mfr：onsemi
- Package：Bulk
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：30 V
- Vce Saturation (Max) @ Ib, Ic：650mV @ 5mA, 100mA
- Current - Collector Cutoff (Max)：15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：200 @ 2mA, 5V
- Power - Max：310 mW
- Frequency - Transition：150MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The BC858BMTF is a PNP general-purpose small-signal bipolar junction transistor manufactured by onsemi. It is housed in an SOT-23 surface-mount package and rated for a collector-emitter voltage of -30V and a continuous collector current of -100mA. The device features a maximum power dissipation of 310mW at 25°C ambient temperature. The 'B' suffix indicates a DC current gain (hFE) range of 210 to 480, ensuring consistent amplification characteristics. It operates within a junction temperature range of -65°C to +150°C.
Feature Summary
- PNP silicon epitaxial planar construction for reliable switching and amplification
- High DC current gain binning for precise circuit matching
- Low saturation voltage for efficient power management
- RoHS compliant lead-free packaging
Applications
- General purpose amplifier circuits
- Switching applications in consumer electronics
- Complementary pairing with BC848 series NPN transistors
- Signal conditioning in industrial control systems
Procurement Notes
Verify the specific manufacturer part number against official onsemi documentation to confirm the SOT-23 package and B-grade hFE specifications. Ensure that the ordering information matches the exact suffix requirements for your design. Cross-reference datasheets from authorized distributors to validate component authenticity and compliance status before finalizing procurement decisions.
Selection Notes
Select this component when a PNP transistor with moderate voltage ratings and high gain consistency is required. The BC858B variant offers a balanced performance profile suitable for both analog amplification and digital switching tasks. Consider the thermal limitations of the SOT-23 package when designing for high-power dissipation scenarios or dense PCB layouts requiring adequate heat sinking.
Part Context
This component belongs to the widely used BC85x family of PNP transistors, which are industry-standard replacements for older discrete designs. The BC858B specifically complements the BC848B NPN transistor, forming matched pairs for push-pull output stages. Its compact SOT-23 footprint makes it ideal for space-constrained portable devices and modern automated assembly processes.
Replacement Considerations
Compatible substitutes include BC858BT1G and BC858BW-T1 from various manufacturers, provided they meet the same -30V VCEO and -100mA IC specifications. Verify pinout compatibility and thermal resistance values when transitioning between different supplier packages.
