2N3735 NPN Power Transistor: Datasheet, Features, Pinout, and Applications
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Dr. James Anderson
Overview of 2N3735
The 2N3735 is an NPN silicon transistor featuring a TO-39 metal can package. It is specifically designed for linear and switching applications and offers high-speed response, low saturation voltage, and excellent thermal stability. This transistor is suitable for driving relays, high-fidelity audio amplifiers, and signal processing circuits.
|
Parameter |
Value |
|
Type |
NPN |
|
Collector-Emitter Voltage (Vce) |
60V |
|
Collector-Base Voltage (Vcb) |
100V |
|
Emitter-Base Voltage (Veb) |
5V |
|
Collector Current (Ic max) |
1A |
|
Power Dissipation (Pd) |
12.5W |
|
DC Current Gain (hFE) |
20 - 150 |
2N3735 Features
● High voltage tolerance up to 100V (Vcb)
● Collector current up to 1A
● Wide range of DC current gain
● Durable TO-39 metal can package
● Excellent linearity and low distortion
● Reliable performance in switching applications
2N3735 Pinout
The TO-39 package consists of three leads:
_______
/ \
| 2N3735 |
\_______/
| | |
E B C
● E = Emitter
● B = Base
● C = Collector
Typical Applications
● Audio amplifier circuits
● Industrial control systems
● Relay drivers
● Switching regulators
● Signal processing stages
Package Information
The TO-39 package offers excellent thermal conductivity and mechanical durability, making it ideal for through-hole applications where heat dissipation and rugged mounting are important.
Package Dimensions (TO-39):
|
Feature |
Dimension |
|
Body Diameter |
8.5 mm (typical) |
|
Height |
6.3 mm (typical) |
|
Lead Pitch |
2.54 mm |
2N3735 vs Similar Transistors
|
Feature |
2N3735 |
||
|
Polarity |
NPN |
NPN |
NPN |
|
Vce |
60V |
70V |
45V |
|
Ic max |
1A |
0.7A |
1.5A |
|
Pd |
12.5W |
0.8W |
12.5W |
|
Package |
TO-39 |
TO-39 |
TO-126 |
|
hFE Range |
20–150 |
20–70 |
25–250 |
Conclusion
The 2N3735 NPN power transistor is a dependable and efficient solution for various analog and switching applications. Its wide operating voltage, strong current capability, and rugged packaging make it a top choice for engineers seeking performance and reliability in their designs. Whether used in industrial control, audio amplification, or signal switching, the 2N3735 stands out as a high-performance discrete semiconductor device.
FAQ
-
Q3: What is the difference between TO-39 and TO-92 packages?
TO-39 is a metal can package with better heat dissipation and durability, while TO-92 is plastic and more compact but less robust.
-
Q2: Can I use the 2N3735 for switching inductive loads like relays?
Absolutely. With its 1A current rating and robust packaging, it's well-suited for relay driving and inductive switching.
-
Q1: Is 2N3735 suitable for audio amplifier output stages?
Yes. Its linearity and current handling make it ideal for small to mid-range amplifier stages.
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