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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 2.4V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：2.4 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：30 Ohms
- Current - Reverse Leakage @ Vr：100 µA @ 1 V
- Operating Temperature：-65°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-363
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The CMKZ5221B is a surface mount triple isolated silicon Zener diode from Central Semiconductor Corp, housed in an ULTRAmini SOT-363 package. It contains three independent Zener diodes with a nominal voltage of 2.4 V and a tolerance of ±5%. The device operates within a junction temperature range of -65°C to +150°C and has a maximum power dissipation of 200 mW per diode at 25°C ambient temperature. Electrical characteristics include a maximum Zener impedance of 30 Ω at the test current of 20 mA and a maximum reverse leakage current of 100 μA at 1.0 V.
Feature Summary
- Triple isolated configuration integrating three independent Zener diodes into a single compact surface mount package
- Designed for industrial, commercial, entertainment, and computer applications requiring multiple voltage references
- Utilizes planar die construction suitable for automated assembly processes
Applications
- Industrial control systems
- Commercial equipment
- Entertainment electronics
- Computer hardware
Procurement Notes
This component is classified as End of Life (EOL) by Central Semiconductor Corp. Availability is restricted to existing stock only, with no new production planned. Buyers should verify current inventory levels directly with authorized distributors or the manufacturer's supply management team before placing orders, as replacement parts are not officially designated.
Selection Notes
Select this component when a design requires three isolated Zener references in a minimal footprint. Verify that the 2.4 V nominal voltage and 200 mW total power dissipation meet circuit requirements. Ensure the SOT-363 package dimensions fit the PCB layout constraints. Note that higher voltage devices in this series are available on special order if different reference voltages are needed.
Part Context
The CMKZ5221B belongs to the CMKZ5221B through CMKZ5261B series of triple isolated silicon Zener diodes. This series offers various nominal voltages ranging from 2.4 V to 47 V, all sharing the same SOT-363 package and general electrical characteristics structure. The specific marking code for the CMKZ5221B is 8A1T.
Replacement Considerations
No official replacement part numbers are listed by Central Semiconductor Corp for this EOL component. The datasheet indicates that replacements are 'N/A, Stock Only'. Engineers must source remaining inventory or design around alternative components from other manufacturers if long-term supply is required.
FAQ
What is the marking code for the CMKZ5221B?
The marking code for the CMKZ5221B is 8A1T.
What is the maximum reverse leakage current for the CMKZ5221B?
The maximum reverse leakage current is 100 μA at a reverse voltage of 1.0 V.
Is the CMKZ5221B currently in production?
No, the CMKZ5221B is discontinued and classified as End of Life (EOL). It is available only from existing stock.
