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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 3.3V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：3.3 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：28 Ohms
- Current - Reverse Leakage @ Vr：25 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 CMKZ5226B 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 3.3 V and a tolerance of ±5%. Each diode operates at a test current of 20 mA, featuring a maximum dynamic impedance of 28 Ω at IZT and 1600 Ω at IZK. The device has a maximum reverse current of 25 μA at 1.0 V and a temperature coefficient of -0.070 %/°C. Maximum power dissipation per diode is 200 mW at 25°C ambient, with an operating junction temperature range of -65 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
- ULTRAmini SOT-363 case provides space-efficient mounting solution
Applications
- Industrial equipment voltage regulation
- Commercial electronic circuit protection
- Entertainment system power management
- Computer application voltage referencing
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches required plating options, such as PBFREE for lead-free compliance. Request official datasheets and material declarations to ensure regulatory adherence before finalizing acquisition decisions.
Selection Notes
Select this component when multiple isolated voltage references are required in a limited board area. Ensure the 3.3 V nominal voltage aligns with circuit design requirements. Verify that the 200 mW power dissipation rating per diode suffices for the intended thermal environment and load conditions.
Part Context
This part belongs to the CMKZ5221B through CMKZ5261B series, which offers various Zener voltages ranging from 2.4 V to 47 V within the same SOT-363 package. The series maintains consistent electrical characteristics and mechanical dimensions across different voltage ratings, facilitating standardized design processes.
Replacement Considerations
Official documentation lists no direct replacement part numbers for the CMKZ5226B TR. Availability is restricted to existing stock only. Designers should evaluate alternative triple Zener packages from other manufacturers if new production is required.
FAQ
What is the marking code for the CMKZ5226B?
The marking code for the CMKZ5226B is 8ACT.
What is the maximum reverse current specification?
The maximum reverse current is 25 μA measured at a reverse voltage of 1.0 V.
What is the thermal resistance of the device?
The thermal resistance (ΘJA) is specified as 625 °C/W.
