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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.3V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：22 Ohms
- Current - Reverse Leakage @ Vr：5 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 CMKZ5229B TR is a surface mount triple isolated silicon Zener diode from Central Semiconductor Corp, packaged in an ULTRAmini SOT-363 case. It contains three independent Zener diodes with a nominal voltage of 4.3V 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 200mW per diode at 25°C ambient. Electrical characteristics include a test current of 20mA, maximum impedance of 22Ω at IZT, and a reverse current of 5.0μA at VR=1.0V.
Feature Summary
- Triple isolated silicon Zener diodes integrated into a single compact surface mount package
- Designed for industrial, commercial, entertainment, and computer applications
- Features 5% voltage tolerance for precise regulation requirements
Applications
- Industrial control systems requiring multiple voltage references
- Commercial equipment needing compact multi-channel regulation
- Entertainment electronics utilizing space-constrained designs
- Computer hardware applications requiring stable voltage clamping
Procurement Notes
This component is classified as End of Life (EOL) by the manufacturer. Availability is restricted to existing stock only, with no new production scheduled. Buyers should verify supplier inventory levels carefully before ordering, as supply is finite. Last purchase orders may be subject to specific deadlines defined by the manufacturer's discontinuation notice.
Selection Notes
Select this part when a triple isolated Zener configuration in an SOT-363 package is required. Ensure the design accommodates the 200mW power dissipation limit per diode. Verify that the 4.3V nominal voltage and ±5% tolerance meet circuit specifications. Consider the EOL status and limited availability during the selection phase.
Part Context
The CMKZ5229B belongs to the CMKZ5221B through CMKZ5261B series of triple isolated silicon Zener diodes. All devices in this series share the same ULTRAmini SOT-363 package and general electrical structure, differing primarily in their specific Zener voltage ratings and corresponding marking codes.
Replacement Considerations
No direct replacement part numbers are available from Central Semiconductor Corp for this discontinued series. The manufacturer indicates 'N/A, Stock Only' for all replacements. Engineers must identify alternative sources or compatible components from other manufacturers if new production is required.
