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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 22V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：22 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：29 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 17 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 CMKZ5251B 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 22 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. Electrical characteristics include a maximum Zener impedance (ZZT) of 29 Ω and a reverse current (IR) of 0.1 mA at 17 V. The marking code for this specific part is 1B8T.
Feature Summary
- Triple isolated configuration containing three independent Zener diodes in a single compact package
- Designed for industrial, commercial, entertainment, and computer applications
- Surface mount construction utilizing the ULTRAmini SOT-363 case
Applications
- Industrial equipment
- Commercial electronics
- Entertainment systems
- Computer hardware
Procurement Notes
This component is classified as End of Life (EOL). No direct replacement part numbers are available from the manufacturer. Availability is restricted to existing stock only. Last purchase orders must be placed within six months of the notice date, with final shipments occurring twelve months after the notice. Minimum order quantities may apply during this transition period.
Selection Notes
Verify that the required Zener voltage aligns with the 22 V nominal specification and ±5% tolerance. Ensure the design accommodates the 200 mW power dissipation limit per diode. Confirm compatibility with the SOT-363 footprint and lead configuration: Pins 1-3 are Anodes for D1-D3, and Pins 4-6 are Cathodes for D3-D1.
Part Context
The CMKZ5251B belongs to the CMKZ5221B through CMKZ5261B series of triple isolated silicon Zener diodes. This series provides multiple voltage options ranging from 2.4 V to 47 V within the same physical package format. All devices in this series share identical mechanical dimensions and thermal characteristics while differing in electrical parameters and marking codes.
Replacement Considerations
No official replacement part numbers are listed by Central Semiconductor Corp. The manufacturer indicates N/A for replacements, noting availability is stock only. Customers are advised to contact [email protected] for assistance in locating alternate sources.
