1N5354B

Overview

The onsemi 1N5354B is a silicon Zener voltage regulator diode with a nominal breakdown voltage of 17 V and a maximum steady-state power dissipation of 5 W. It features a ±5% tolerance, a test current (IZT) of 70 mA, and a maximum Zener impedance (ZZT) of 2.5 Ω at the test current. The device operates within a junction temperature range of -65°C to +200°C, with a DC limit of 150°C. It utilizes an axial lead plastic package (CASE 017AA/DO-201AE) with isolated terminals.

Feature Summary

• Utilizes silicon-oxide passivated junctions for superior operating characteristics and environmental protection.
• Provides high surge current capability rated up to 180 W for 8.3 ms pulses.
• Features robust ESD protection meeting Human Body Model Class 3 standards (>16 kV).
• Guarantees maximum limits on multiple electrical parameters including voltage, impedance, and leakage.

Applications

• Voltage regulation in electronic circuits requiring stable reference levels.
• Protection against transient overvoltage events and surge currents.
• General-purpose clamping applications in industrial environments.

Procurement Notes

Verify that the ordered part number matches the specific JEDEC designation required for your circuit design. Confirm package availability options, such as box or tape-and-reel configurations, align with your assembly process. Ensure compliance with RoHS directives if applicable by checking for the 'G' suffix indicating lead-free packaging. Review the datasheet thermal derating curves to confirm suitability for your specific ambient temperature conditions.

Selection Notes

Select this component when a precise 17 V reference with tight tolerance is necessary. Consider the 5 W power rating and thermal resistance characteristics for heat dissipation requirements. Evaluate the low leakage current and impedance specifications for signal integrity needs. Verify that the axial lead format fits the mechanical constraints of the target printed circuit board layout.

Part Context

This device belongs to the 1N53 Series, a comprehensive family of 5 Watt Zener diodes manufactured by onsemi. The series spans a wide voltage range from 3.3 V to 200 V, offering consistent performance across various breakdown voltages. All members share the same Surmetic 40 axial lead package and silicon-oxide passivation technology, ensuring uniform reliability and mounting characteristics throughout the product line.

Replacement Considerations

Cross-reference with other manufacturers' 1N5354B equivalents to ensure pinout and electrical parameter compatibility. Verify that substitute components meet the same 5 W power dissipation and ±5% voltage tolerance requirements. Check for identical package dimensions to maintain mechanical fit without redesigning the PCB footprint.

FAQ

What is the maximum non-repetitive surge current rating for the 1N5354B?

The device supports a peak surge current rating of up to 180 W for an 8.3 ms pulse width, as specified in the electrical characteristics table.

How is the polarity indicated on the 1N5354B package?

Polarity is identified by a cathode band marked on the external surface of the plastic case.

What is the maximum junction-to-lead thermal resistance?

The junction-to-lead thermal resistance is typically 25 °C/W, measured at a lead length of 3/8 inch.