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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 3V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：3 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：29 Ohms
- Current - Reverse Leakage @ Vr：50 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 CMKZ5225B BK is a surface mount triple isolated silicon Zener diode from the Central Semiconductor CMKZ5221B series, housed in an ULTRAmini SOT-363 package. It contains three independent Zener diodes with a nominal voltage of 3.0 V and a tolerance of ±5%. Each diode operates at a test current of 20 mA, featuring a maximum dynamic impedance of 29 Ω and a reverse current of 50 μA at 1.0 V. The device supports a power dissipation of 200 mW and functions within a junction temperature range of -65°C to +150°C.
Feature Summary
- Triple isolated silicon Zener diodes integrated into a single compact surface mount package
- Designed for industrial, commercial, entertainment, and computer applications
- Provides independent voltage regulation for multiple circuits within limited board space
Applications
- Industrial control systems requiring multi-channel voltage reference
- Commercial equipment utilizing compact power management solutions
- Computer hardware needing isolated signal conditioning or 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 levels with authorized distributors, as supply is finite and subject to depletion without replacement production.
Selection Notes
Engineers should evaluate alternative components due to the EOL status of this part. When selecting replacements, ensure compatibility with the SOT-363 footprint and verify that the substitute offers equivalent isolation between channels. Confirm that the new device meets the required 3.0 V nominal voltage and 200 mW total power dissipation constraints for the specific application environment.
Part Context
The CMKZ5225B BK belongs to the CMKZ5221B through CMKZ5261B series, which provides various Zener voltages ranging from 2.4 V to 47 V. All devices in this series share the same triple-isolated SOT-363 packaging and electrical characteristics structure, differing primarily in their specific breakdown voltages and associated temperature coefficients.
Replacement Considerations
No official replacement part numbers are listed by the manufacturer. The datasheet explicitly states 'N/A, Stock Only' for all series variants. Designers must source third-party equivalents or redesign using available active components that match the SOT-363 form factor and electrical specifications.
FAQ
What is the marking code for the CMKZ5225B?
The marking code for the CMKZ5225B is 8E1T.
What is the maximum reverse current specified for this device?
The maximum reverse current is 50 μA when measured at 1.0 V.
Is this component currently in production?
No, the CMKZ5225B BK is discontinued and classified as End of Life (EOL). It is available only from existing stock.
