BC859B

$0.07

Description：TRANS PNP 30V 0.1A SOT23-3
Series：-

SKU:0970ffcbd93a Category: Single Bipolar Transistors Brand: Fairchild Semiconductor

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Product introduction

Product Detailed Parameters

Description：TRANS PNP 30V 0.1A SOT23-3
Series：-
Mfr：Fairchild Semiconductor
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：220 @ 2mA, 5V
Power - Max：250 mW
Frequency - Transition：100MHz
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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BC859B

Overview

The BC859B is a PNP epitaxial silicon transistor manufactured by Fairchild Semiconductor. It is housed in a TO-92 package with three leads and complies with JEDEC standards. The device supports a maximum collector current of 0.1 A and a collector-emitter voltage of -45 V. It features a minimum DC current gain (hFE) of 110, ensuring reliable amplification performance. The component operates at junction temperatures up to 150 °C and is lead-free compliant.

Feature Summary

Designed for general-purpose switching and amplifier applications
Utilizes PNP epitaxial silicon construction for stable operation
Offers low noise characteristics suitable for sensitive signal processing

Applications

General purpose signal amplification
Electronic switching circuits
Audio pre-amplifier stages

Procurement Notes

Verify the specific manufacturer datasheet for the BC859B to confirm pinout configurations and absolute maximum ratings. Ensure compliance with RoHS directives if required for the target assembly. Cross-reference the part number with official Fairchild or ON Semiconductor documentation to validate availability and exact electrical tolerances before integration into designs.

Selection Notes

Select the BC859B when a PNP small-signal transistor with a -45 V breakdown voltage is required. Its 0.1 A current rating makes it suitable for low-power control tasks. Consider its complement, the BC849B, for complementary circuit designs requiring matched NPN/PNP characteristics in similar packages.

Part Context

The BC550 series includes various PNP transistors like the BC550CBU, which shares similar high-voltage and low-noise attributes. The BC859B belongs to the broader family of small-signal bipolar junction transistors used in consumer electronics and industrial controls. It serves as a standard replacement for legacy components in audio and RF applications requiring moderate gain and voltage handling.

Replacement Considerations

The BC859B is functionally compatible with other PNP transistors in the BC85x series, such as the BC857B and BC858B, provided voltage and current ratings are sufficient. Verify pinout compatibility, as SOT-23 variants may differ from TO-92 layouts.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

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Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.