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Product Detailed Parameters
- Description：DIODE ZENER 18V 5W DO15
- Series：-
- Mfr：MCC (Micro Commercial Components)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：5 W
- Impedance (Max) (Zzt)：2.5 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 13.7 V
- Operating Temperature：-55°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：DO-204AC, DO-15, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The MCC 1N5355B-TP is a 5.0 W silicon Zener diode in a DO-15 axial leaded package. It provides an 18 V nominal voltage with ±5% tolerance. Key electrical parameters include a maximum dynamic impedance of 2.5 Ω, a reverse leakage current of 0.5 µA at 13.7 V, and a maximum regulator current of 264 mA. The device operates within a junction temperature range of -55°C to +200°C.
Feature Summary
- Provides stable voltage regulation across a wide operating temperature range.
- Features low thermal resistance for efficient heat dissipation under high power loads.
- Utilizes plastic encapsulation meeting UL 94 V-0 flammability ratings.
Applications
- Voltage regulation in DC power supply circuits
- Overvoltage protection for sensitive electronic components
- Reference voltage generation in measurement instrumentation
Procurement Notes
Verify the specific suffix designation against the manufacturer's ordering information to confirm compliance status and packaging format. Ensure that the procurement channel is authorized by Micro Commercial Components to guarantee genuine parts with full traceability and adherence to quality standards.
Selection Notes
Select this component when a 5 W power rating and 18 V regulation are required in a through-hole configuration. Consider the thermal resistance characteristics and maximum surge current capabilities relative to the expected load conditions and ambient operating environment.
Part Context
This part belongs to the JEDEC registered 1N5338B through 1N5388B series of 5.0 Watt Zener diodes manufactured by Micro Commercial Components. The series covers a voltage selection from 5.1 V to 200 V, utilizing a standard DO-15 case material with molded plastic construction.
Replacement Considerations
Equivalent parts within the same series include 1N5354B and 1N5356B. Verify that substitute devices match the required voltage tolerance and power dissipation specifications before implementation.
FAQ
What is the maximum surge current capability?
The maximum non-recurrent square-wave surge current (IZSM) is specified as 5.5 A with a pulse width of 8.3 ms.
How does the device handle high temperatures?
The device supports a maximum junction temperature of 200°C for pulsed conditions, though DC operation is limited to 150°C. Power derating begins above 75°C at a rate of 67 mW/°C.
