DZ4J300K0R

Overview

The DZ4J300K0R is a dual silicon epitaxial planar Zener diode manufactured by Panasonic Electronic Components. It provides a nominal Zener voltage of 28.7 V with a tolerance of ±5% at a test current of 2 mA. The device features a low Zener operating resistance of 160 Ω and an extremely low reverse leakage current of 0.05 μA at 23 V. Rated for a total power dissipation of 200 mW, it operates within an ambient temperature range of -40 °C to +85 °C. The component utilizes the SMini4-F3-B (JEITA SC-113BB) surface-mount package, measuring 2.1 mm in length, 2.0 mm in width, and 0.7 mm in height.

Feature Summary

• Dual configuration allowing independent wiring of two elements within a compact footprint.
• Low Zener operating resistance combined with excellent rising characteristics in the low-current range.
• Halogen-free construction compliant with EU RoHS directives and UL-94 V-0 flammability standards.

Applications

• Constant voltage reference circuits
• Surge absorption applications
• Waveform clipping circuits

Procurement Notes

Verify the specific manufacturing lot date code against project requirements before procurement. Confirm that the SMini4-F3-B land pattern matches the PCB design layout precisely. Ensure storage conditions adhere to moisture sensitivity level guidelines if damp-proof packaging was compromised prior to assembly.

Selection Notes

Select this component when a dual Zener configuration is required in a minimal surface-mount area. The 28.7 V rating suits mid-range voltage regulation tasks. Verify that the 160 Ω impedance meets the noise and stability requirements of the target circuit application.

Part Context

This part belongs to the Panasonic DZ4J series of surface-mount Zener diodes. It shares the same physical package dimensions as other variants in the family but differs in electrical parameters such as breakdown voltage and leakage current specifications.

Replacement Considerations

The datasheet identifies the basic part number DZ2J300 as a parallel equivalent configuration. Verify pinout compatibility and thermal performance when substituting with other manufacturers' equivalents.

FAQ

What is the maximum repetitive peak forward current?

The absolute maximum rating for repetitive peak forward current is 200 mA.

How is the Zener voltage specified regarding temperature?

The Zener voltage is guaranteed at 25 °C. Values measured at other temperatures must be adjusted based on the temperature coefficient of 28.7 mV/°C.

What is the electrostatic discharge (ESD) rating?

The device has an ESD rating of ±8 kV, tested according to IEC61000_4_2 with C = 150 pF and R = 330 Ω.