2SA1015 / A1015 PNP Transistor — TO-92, 50V, 150mA, Low Noise (20-Pack)

2SA1015 / A1015 PNP Transistor — TO-92, 50V, 150mA, Low Noise (20-Pack)

The 2SA1015 (A1015) is a classic low-noise PNP bipolar junction transistor (BJT) in TO-92 package from Toshiba, widely used in audio preamplifier, signal amplification, and low-power switching circuits. As the PNP complement to the 2SC1815 NPN transistor, the 2SA1015 is the standard choice for complementary push-pull audio amplifier stages and differential pair circuits. With a 50V collector-emitter voltage, 150mA collector current, and exceptionally low noise figure, it remains one of the most popular general-purpose PNP transistors in electronics design and repair.

Key Electrical Specifications

Parameter	Symbol	Value
Collector-Emitter Voltage	VCEO	50V
Collector-Base Voltage	VCBO	60V
Emitter-Base Voltage	VEBO	5V
Collector Current (max)	IC	150mA
Power Dissipation	PC	400mW
DC Current Gain	hFE	70–700 (O/Y/GR grades)
Transition Frequency	fT	80MHz
Noise Figure	NF	Low (audio grade)
Package	—	TO-92 (through-hole)
Operating Temperature	Tj	-55°C to +150°C
Pack Quantity	—	20 pieces

hFE Grade Selection Guide

Grade	hFE Range	Best For
O	70–140	Switching, general purpose
Y	120–240	General amplification
GR	200–400	Audio preamplifier, low-noise
BL	350–700	High-gain audio, sensitive circuits

2SA1015 vs BC327 vs 2N3906 — PNP Transistor Comparison

Feature	2SA1015	BC327	2N3906
VCEO	50V	45V	40V
IC max	150mA	800mA	200mA
fT	80MHz	100MHz	250MHz
Noise	Very low	Low	Low
NPN Complement	2SC1815	BC337	2N3904
Best For	Audio preamp, low-noise	Higher current loads	General switching

Why Choose 2SA1015?

• ✅ Low noise figure — ideal for audio preamplifier and microphone amplifier circuits
• ✅ Complement to 2SC1815 — perfect pair for push-pull and complementary amplifier stages
• ✅ Wide hFE range — select grade (O/Y/GR/BL) to match circuit requirements
• ✅ TO-92 package — breadboard and through-hole PCB compatible
• ✅ 80MHz fT — suitable for RF preamplifier and VHF circuits
• ✅ 20-pack value — stock for multiple projects and repair

Typical Applications

• Audio preamplifier and microphone amplifier input stage
• Complementary push-pull audio amplifier (with 2SC1815)
• Differential pair signal amplifier
• Low-power PNP switching circuit
• RF preamplifier and VHF amplifier
• Transistor radio and vintage electronics repair
• General-purpose PNP signal transistor

Package Contents

• 20 × 2SA1015 / A1015 PNP Transistor (TO-92, grade as selected)

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