BC558 Transistor (Pack of 5)
BC558 Transistor (Pack of 5)
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BC558 Transistor (Pack of 5)
The BC558 is a general-purpose PNP bipolar junction transistor widely used in signal amplification and switching circuits. With a collector current rating of -100mA and a gain (hFE) of 110-800, it's an essential component for analog circuit design, audio preamplifiers, and complementary pair configurations with the BC548 NPN transistor. This pack of 5 from Tech Depot India, Bengaluru ensures you have spares on hand for prototyping and production.
Specifications
| Component Type | PNP Bipolar Junction Transistor (BJT) |
| Part Number | BC558 |
| Package | TO-92 |
| Quantity | 5 pcs |
| Polarity | PNP |
| Collector-Emitter Voltage (VCEO) | -30V |
| Collector-Base Voltage (VCBO) | -30V |
| Emitter-Base Voltage (VEBO) | -5V |
| Collector Current (IC max) | -100mA |
| DC Current Gain (hFE) | 110-800 (typical ~200) |
| Transition Frequency (fT) | 150 MHz |
| Power Dissipation (PD) | 500mW |
| Operating Temperature | -65 degreesC to +150 degreesC |
| Pin Configuration | 1-Collector, 2-Base, 3-Emitter (flat side facing you) |
| Complementary NPN Pair | BC548 |
| Origin | Original / Authentic |
| Warranty | |
| Support | Email & WhatsApp reliable |
Why Choose the BC558 from Tech Depot India?
- 100% authentic BC558 transistors sourced from trusted, authorized suppliers
- Pack of 5 provides excellent value for prototyping, testing, and spare inventory
- High current gain (hFE up to 800) makes it ideal for sensitive amplification stages
- Industry-standard TO-92 package fits all standard breadboards and PCB footprints
- Reliable complement to BC548 NPN for push-pull and complementary circuit designs
- Expert technical support to help you integrate the BC558 into your projects
Key Features & Applications
- Signal Amplification: High gain and 150 MHz transition frequency make the BC558 suitable for audio preamplifiers, small-signal amplifier stages, and sensor signal conditioning circuits.
- Switching Circuits: Use as a PNP switch to control LEDs, relays, buzzers, and small loads from microcontroller or logic-level signals with minimal base current.
- Complementary Pair Designs: Pair with the BC548 (NPN) to build push-pull output stages, Class B/AB audio amplifiers, and H-bridge motor driver sub-circuits.
- Current Source & Mirror: The BC558's stable gain characteristics make it well-suited for constant current sources and current mirror configurations in analog design.
- Oscillator & Timer Circuits: Incorporate into astable and monostable multivibrator designs, relaxation oscillators, and tone generator projects.
- Voltage Regulation: Use in series-pass regulator designs and bias networks where a PNP transistor is required for proper voltage polarity handling.
Project Ideas
- Audio Preamplifier: Build a simple single-stage or multi-stage audio preamplifier using BC558 transistors to amplify microphone or guitar pickup signals before feeding into a power amplifier.
- LED Chaser / Sequential Flasher: Create an eye-catching LED chaser circuit using BC558 transistors as PNP switches driven by a 555 timer and decade counter combination.
- Push-Pull Audio Amplifier: Pair BC558 (PNP) with BC548 (NPN) to construct a complementary symmetry Class AB audio amplifier capable of driving small speakers.
- Touch-Activated Switch: Leverage the BC558's high gain to build a touch-sensitive switch where skin resistance on a contact pad triggers a relay or LED through cascaded transistor stages.
- Rain Detector / Moisture Alarm: Design a rain sensor that uses BC558 transistors to amplify the small conductance change across sensor probes and activate a buzzer alarm.
- Learning & Education: Ideal for electronics students studying BJT biasing, load-line analysis, frequency response, and transistor switching characteristics in lab experiments.
Technical Overview
The BC558 is a silicon PNP bipolar junction transistor manufactured
Frequently Asked Questions
When will I receive my order?
Is technical support available?
Yes, responsive support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy BC558 Transistor (Pack of 5) Online in India
Purchase the BC558 Transistor (Pack of 5) online at Tech Depot India - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Delhi, Hyderabad, Ahmedabad, Jaipur, and Surat.
Looking to buy BC558 Transistor (Pack of 5) at the best price in India? Tech Depot India offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Buy BC558 Transistor (Pack of 5) Online in India at Tech Depot India
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