Description
The BD136 is a PNP epitaxial planar bipolar transistor, housed in a SOT-32 (TO-126) plastic package, specially designed for audio amplifiers, driver stages, and general-purpose power applications.
It is commonly used in complementary or quasi-complementary amplifier circuits, where it pairs perfectly with its complementary NPN transistor BD135.
BD136 ট্রানজিস্টরটি অডিও অ্যাম্প্লিফায়ার ও ড্রাইভার সার্কিটে বহুল ব্যবহৃত। এটি BD135 (NPN)-এর সাথে কমপ্লিমেন্টারি হিসেবে কাজ করে এবং স্টেবল ও নির্ভরযোগ্য পারফরম্যান্স প্রদান করে।
⭐ Key Features
PNP bipolar junction transistor
Epitaxial planar technology
Optimized for audio amplifier circuits
Pre-selected DC current gain (hFE)
Suitable for complementary & quasi-complementary designs
Compact SOT-32 (TO-126) package
Reliable performance for continuous operation
🔧 Electrical Specifications
| Parameter | Value |
|---|---|
| Transistor Type | Bipolar Junction Transistor (BJT) |
| Polarity | PNP |
| Collector-Base Voltage (Vcb) | -45 V |
| Collector-Emitter Voltage (Vce) | -45 V |
| Emitter-Base Voltage (Veb) | -5 V |
| Collector Current (Ic) | -1.5 A |
| Peak Collector Current | -3 A |
| Base Current (Ib) | -0.5 A |
| Package Type | SOT-32 / TO-126 |
🔁 Complementary Pair
Complementary NPN Transistor: BD135
Used together in push-pull and audio output stages for balanced amplification.
🛠 Applications
Audio power amplifiers
Driver stages in amplifier circuits
Push-pull output stages
General-purpose power switching
Educational & DIY electronics projects
🧠 Why Choose BD136?
Excellent for low-to-medium power audio designs
Stable gain characteristics
Easy to heat-sink due to flat package
Widely available & industry-trusted
Perfect match with BD135
📦 Package Includes
1 × BD136 PNP Power Transistor
⚠️ Important Notes
Ensure correct PNP polarity during circuit design
Heat sink recommended for high-current operation
Not a MOSFET – this is a BJT transistor
❓ Frequently Asked Questions (SEO Boost)
Q1: Is BD136 an NPN or PNP transistor?
✅ BD136 is a PNP bipolar transistor.
Q2: What is the complementary transistor for BD136?
✅ The complementary NPN transistor is BD135.
Q3: Can BD136 be used in audio amplifiers?
✅ Yes, it is specifically designed for audio amplifier and driver circuits.
Q4: What package does BD136 use?
✅ It comes in a SOT-32 / TO-126 plastic package.
Q5: Is BD136 suitable for general-purpose use?
✅ Yes, it can be used in general power and switching applications.
🔍 SEO Meta Data (Rank Math)
Meta Title:
BD136 PNP Power Transistor for Audio Amplifier – Buy in Bangladesh
Meta Description:
Buy BD136 PNP epitaxial planar transistor in SOT-32 package. Ideal for audio amplifiers & driver circuits. Complementary to BD135.
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