Part Number: CZT2222A
Function: 40V, 0.6A, NPN SILICON TRANSISTOR
Package: SOT-223, SURFACE MOUNT Type
Manufacturer: Central Semiconductor
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Description
The CZT2222A is a 40V, 0.6A NPN silicon transistor fabricated using an epitaxial planar process and housed in a compact surface-mount package. It offers reliable switching and amplification performance with good thermal stability and moderate power handling capability. This transistor is commonly used in general-purpose amplification, signal processing, and low-to-medium power switching circuits.
Features
- Power dissipation up to 2W
- High reliability epitaxial planar construction
- Suitable for both switching and linear amplification
- Compact surface-mount package for space-constrained designs
Absolute Maximum Ratings (Tc = 25 °C)
| Parameter | Symbol | Value | Unit |
| Collector-Base Voltage | VCBO | 75 | V |
| Collector-Emitter Voltage | VCEO | 40 | V |
| Emitter-Base Voltage | VEBO | 6 | V |
| Collector Current | IC | 600 | mA |
| Power Dissipation | PC | 2 | W |
| Junction Temperature | Tj | 150 | °C |
| Storage Temperature | Tstg | -65 to 150 | °C |
Pinout
Design Notes
- Ensure base current is properly limited to avoid excessive power dissipation
- Use appropriate biasing for linear amplifier applications to maintain stability
- Thermal management is important when operating near maximum current
- Switching speed is suitable for general-purpose applications but not high-frequency RF
- Include protection components when driving inductive loads
Typical Circuit Usage
- Signal amplification stages in analog circuits
- Low-to-medium power switching applications
- Driver stages for relays and small motors
- Level shifting and interface circuits
- General-purpose transistor switching in embedded systems
How to Choose This Part
- Select for general-purpose NPN switching or amplification up to 600mA
- Suitable for designs requiring compact SMD footprint
- Ensure voltage ratings meet circuit requirements
- Consider thermal limits in continuous high-current operation
- Use when moderate gain and reliable switching are sufficient
Applications
- Consumer electronics
- Industrial control circuits
- Signal processing modules
- Switching regulators and drivers
- Embedded system interfaces
Alternative / Equivalent Products
- 2N2222A (through-hole equivalent)
- PN2222A (plastic package variant)
- MMBT2222A (SMD equivalent)
- BC337 (higher gain alternative)
- S8050 (similar general-purpose NPN transistor)
Other data sheets are available within the file: CZT2222
CZT2222A Datasheet PDF Download
