1N5350B

Overview

The onsemi 1N5350B is a single-channel Zener voltage regulator diode from the 1N53 Series, designed for robust voltage regulation in axial lead applications. It features a nominal Zener voltage of 13 V with a ±5% tolerance and a maximum steady-state power dissipation of 5 W at a lead temperature of 25°C. The device utilizes silicon-oxide passivated junctions within a Surmetic 40 (DO-15) plastic package, ensuring protection against common environmental conditions. Key electrical characteristics include a test current of 100 mA, a maximum Zener impedance of 2.5 Ω, and a reverse leakage current of 1 µA at 9.9 V. It supports an operating temperature range from -65°C to +200°C.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and tight parameter limits.
• Provides high surge current capability up to 180 W for an 8.3 ms pulse width.
• Features ESD protection rated at Class 3 (>16 kV) per the Human Body Model.
• Offers guaranteed maximum limits on multiple electrical parameters for consistent performance.

Applications

• Voltage regulation across broad operating current and temperature ranges.
• Protection circuits requiring high surge stress withstand capabilities.
• General-purpose voltage reference applications in industrial environments.

Procurement Notes

Verify the specific ordering suffix when purchasing; the 'G' suffix indicates a Pb-Free package. Confirm that the required quantity matches the standard shipping units, which are typically provided in boxes of 1000 units or tape and reel configurations of 4000 units. Ensure the procurement specifications align with the RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select the 1N5350B when a stable 13 V reference is required with a 5 W power handling capacity. Consider this component for designs needing axial lead mounting flexibility and high thermal stability. Evaluate the 2.5 Ω impedance and 1 µA leakage current against circuit sensitivity requirements. Ensure adequate heat sinking is planned if operation exceeds the derating threshold above 25°C lead temperature.

Part Context

This component belongs to the 1N53 Series, a complete line of 5 Watt Zener diodes ranging from 3.3 V to 200 V. The series is JEDEC registered and manufactured using transfer-molded plastic packages. The 1N5350B specifically addresses the 13 V segment of this lineup, offering standardized tolerances suitable for general electronic applications where reliable voltage clamping is essential.

Replacement Considerations

Cross-reference with other manufacturers' 1N5350B equivalents such as those from Diotec Semiconductor, Micro Commercial Components, or Digitron. Verify that substitute parts match the 13 V nominal voltage, 5 W power rating, and DO-15/DO-201AE package dimensions to ensure mechanical and electrical compatibility without redesigning the PCB footprint.

FAQ

What is the maximum non-repetitive surge current rating for the 1N5350B?

The device can withstand a surge rating of up to 180 W for an 8.3 ms pulse width, corresponding to a peak surge current determined by the nominal Zener voltage.

How is the polarity indicated on the 1N5350B package?

Polarity is indicated by a cathode band printed on the external surface of the plastic encapsulation.

What is the thermal resistance characteristic of this component?

The junction-to-lead thermal resistance is 25°C/W, allowing for efficient heat transfer through the axial leads during operation.