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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 30V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- 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 TR 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 30 V and a tolerance of ±5%. Each diode operates at a test current of 4.2 mA, featuring a maximum dynamic impedance of 49 Ω at IZT and 600 Ω at ZZK. The device has a maximum power dissipation of 200 mW per diode at 25°C, with a thermal resistance of 625 °C/W. Operating temperatures range from -65°C to +150°C.
Feature Summary
- Triple isolated configuration within a single ULTRAmini SOT-363 package
- Designed for industrial, commercial, entertainment, and computer applications
- High reliability silicon construction with 5% voltage tolerance
Applications
- Industrial control systems
- Commercial equipment
- Entertainment electronics
- Computer circuitry
Procurement Notes
This component is classified as End of Life (EOL) by Central Semiconductor Corp. No new production is available; only existing stock may be sourced. Last purchase orders were accepted six months after the notice date, with final shipments occurring twelve months post-notice. Verify availability through authorized distributors or stock-only suppliers, as standard ordering channels no longer support this part number.
Selection Notes
Select this component when a compact triple Zener solution is required in an SOT-363 footprint. Ensure the design accommodates the specific 30 V nominal voltage and 4.2 mA test current. Consider the 200 mW power dissipation limit per diode and the 625 °C/W thermal resistance for proper heat management. Verify that the EOL status aligns with long-term product lifecycle requirements.
Part Context
The CMKZ5256B belongs to the CMKZ5221B through CMKZ5261B series of surface mount triple isolated silicon Zener diodes. These devices share the same ULTRAmini SOT-363 package and general electrical characteristics, differing primarily in their nominal Zener voltage ratings which range from 2.4 V to 47 V across the series.
Replacement Considerations
No direct replacement part numbers are provided by Central Semiconductor for the CMKZ5256B TR. The manufacturer indicates 'N/A, Stock Only' for all replacements in this series. Contact [email protected] for assistance in locating alternate sources if necessary.
FAQ
What is the marking code for the CMKZ5256B?
The marking code for the CMKZ5256B is 1G8T.
What is the maximum reverse current for each diode in the CMKZ5256B?
The maximum reverse current (IR) for each diode is 0.1 μA at a reverse voltage (VR) of 23 V.
What is the temperature coefficient for the CMKZ5256B?
The maximum temperature coefficient (ΘVZ) for the CMKZ5256B is +0.091 %/°C.
