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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 30V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：30 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：49 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 23 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 CMKZ5256B BK is a surface mount triple isolated silicon Zener diode from the Central Semiconductor CMKZ5221B series, packaged in an ULTRAmini SOT-363 case. It contains three independent Zener diodes with a nominal voltage of 30V and a tolerance of ±5%. Each diode operates at a test current of 3.8mA, featuring a maximum dynamic impedance of 70Ω and a reverse current of 0.1mA. The device supports a total power dissipation of 200mW at 25°C and functions within a junction temperature range of -65°C to +150°C.
Feature Summary
- Triple isolated configuration housing three independent silicon Zener diodes in a single compact package
- Designed for industrial, commercial, entertainment, and computer applications
- Surface mount construction utilizing the ULTRAmini SOT-363 case form factor
Applications
- Industrial circuit regulation
- Commercial equipment voltage stabilization
- Entertainment system power management
- Computer application logic protection
Procurement Notes
This component has been officially classified as End of Life (EOL) by Central Semiconductor Corp. Production has ceased, and availability is restricted to existing stock only. No new manufacturing orders are accepted. Buyers must verify current inventory status directly with authorized distributors or suppliers before proceeding with any acquisition attempts.
Selection Notes
Engineers should evaluate alternative components due to the discontinued status of this part number. When selecting replacements, ensure compatibility with the SOT-363 footprint and verify that the substitute offers equivalent isolation between the three internal diodes. Matching the 30V nominal voltage and 5% tolerance specifications is critical for maintaining original circuit performance.
Part Context
The CMKZ5256B BK belongs to the CMKZ5221B through CMKZ5261B series of triple isolated Zener diodes. This series provides multiple voltage options within the same physical package, allowing designers to utilize consistent board layouts across different voltage requirements while saving space compared to discrete individual packages.
Replacement Considerations
No direct replacement part numbers are available from Central Semiconductor for this EOL series. The manufacturer explicitly states N/A for all replacements in this group. Designers must source third-party equivalents or redesign using currently manufactured devices.
