100pcs BC847B BC847 NPN General Purpose Small Signal Transistor, 45V 100mA, SOT-23

Description

Product Overview

The Formiden BC847B package delivers a reliable supply of 100 NPN small‑signal transistors, each engineered to meet demanding electronic designs. Rated for a collector‑emitter breakdown voltage of 45 V and a continuous collector current of 100 mA, these devices provide a solid balance of voltage tolerance and current capability for a variety of low‑power applications. Their compact SOT23 footprint occupies minimal board space, making them ideal for dense surface‑mount layouts where every millimeter counts. The transistors exhibit low noise characteristics across the 30 Hz to 15 kHz range, ensuring clean signal amplification in audio‑frequency (AF) input stages, driver circuits, and other sensitive analog paths. Complementary to the BC857 P‑type counterpart, the BC847B enables designers to create symmetrical push‑pull configurations, enhancing efficiency and linearity in amplifier stages. Each unit is manufactured by Formiden, a reputable supplier known for consistent quality and adherence to industry standards. The pack includes detailed packaging dimensions (2.36 × 1.57 × 0.7 inches) and a lightweight design (0.96 oz), facilitating easy handling and integration into production workflows. With a best‑seller rank of #53 in BJT Transistors, the BC847B has earned a reputation for dependable performance among hobbyists and professional engineers alike.

Usage

These BC847B transistors are suited for a broad spectrum of electronic projects, ranging from hobbyist prototypes to commercial-grade devices. Their 45 V rating makes them appropriate for low‑voltage power supplies, battery‑operated gadgets, and portable instrumentation where voltage spikes are limited. In audio applications, the low‑noise profile supports high‑fidelity pre‑amplifiers, microphone bias circuits, and tone control networks, delivering clear sound without unwanted hiss. The compact SOT23 package allows integration into wearable technology, IoT sensors, and compact consumer electronics where board real estate is at a premium. Engineers designing complementary push‑pull stages will find the BC847B’s compatibility with BC857 especially valuable, enabling balanced output stages in class‑AB amplifiers and digital‑to‑analog converters. Additionally, the transistors can be employed in driver circuits for LEDs, small motors, and relay coils, providing the necessary current handling while maintaining low power dissipation. Their robust construction ensures reliable operation in environments with temperature variations, making them suitable for automotive sensor interfaces and industrial control panels. Whether you are building a signal conditioning front‑end, a switching regulator, or a simple switch, the BC847B offers the versatility needed to meet design requirements.

Why Choose Us

Choosing the Formiden BC847B means selecting a component backed by rigorous quality assurance processes. Each transistor undergoes comprehensive testing for voltage tolerance, current handling, and noise performance, guaranteeing that the specifications listed are consistently met. Formiden’s manufacturing facilities adhere to ISO‑9001 standards, providing traceability and reliability that are critical for mission‑critical applications. The 100‑piece pack reduces inventory management overhead, allowing designers to source the exact quantity needed for batch production without excess waste. Our customer support team offers technical assistance throughout the product lifecycle, from schematic design to troubleshooting, ensuring that you receive guidance whenever challenges arise. In addition, the BC847B’s complementary nature with the BC857 simplifies design decisions, reducing the need for multiple part numbers and streamlining bill‑of‑materials (BOM) management. With a proven track record reflected in a 5‑star customer rating, the BC847B has demonstrated its capability to meet the expectations of both novice makers and seasoned engineers. We also provide fast shipping and easy returns, reinforcing our commitment to a seamless purchasing experience.

Key Features

• Consistent 45 V breakdown and 100 mA current rating for reliable circuit performance
• Low‑noise operation from 30 Hz to 15 kHz, ideal for audio and precision analog applications
• Compact SOT23 package saves board space and supports high‑density designs
• Complementary to BC857, enabling balanced push‑pull and symmetrical circuit topologies
• Backed by Formiden’s quality assurance and responsive technical support for peace of mind

FAQ

What is the maximum collector‑emitter voltage for the BC847B?

The BC847B is rated for a maximum collector‑emitter breakdown voltage of 45 V, making it suitable for low‑voltage applications.

Can these transistors be used in audio pre‑amplifier circuits?

Yes, the BC847B’s low‑noise characteristics between 30 Hz and 15 kHz make it an excellent choice for audio pre‑amplifier and AF input stage designs.

Are the BC847B and BC857 truly complementary?

Absolutely. The BC847B is an NPN device that pairs well with the PNP BC857, allowing designers to create symmetrical push‑pull configurations for improved efficiency.

How many transistors are included in the package?

The package contains 100 individual BC847B NPN transistors, providing ample quantity for prototyping and small‑scale production runs.

What support does Formiden offer for these components?

Formiden provides technical assistance, detailed datasheets, and responsive customer service to help you integrate the BC847B into your designs successfully.