1N5284UR-1/TR

Overview

The Microchip Technology 1N5284UR-1/TR is a current regulator diode housed in the DO-213AB surface-mount package. It provides a nominal regulator current of 0.24 mA with a tolerance range of 0.216 mA to 0.264 mA at a voltage of 25 V. The device supports a maximum working peak voltage of 100 V and dissipates up to 500 mW of power. Electrical characteristics include a minimum regulator impedance of 19 MΩ and a minimum knee impedance of 2.35 MΩ. The unit operates within a temperature range of -65 °C to +150 °C.

Feature Summary

• JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series
• Double-plug internal bond connection for high source impedance
• Inherently radiation hard construction
• Leadless hermetically sealed glass case

Applications

• Current regulation over broad operating voltage ranges
• Temperature-compensated Zener reference circuits
• Biasing elements for semiconductor devices

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging configuration. The /TR suffix indicates tape and reel packaging, which differs from bulk options. Confirm RoHS compliance status as it varies by grade. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability for this component.

Selection Notes

Select the 1N5284UR-1/TR when a precise 0.24 mA current regulation is required in a surface-mount design. This part serves as the direct SMT replacement for the axial 1N5284. Consider the 19 MΩ minimum regulator impedance for applications requiring high dynamic resistance. Verify that the 100 V peak operating voltage meets the circuit requirements.

Part Context

This component belongs to the 1N5283UR-1 through 1N5314UR-1 family of 0.5 watt current regulators. These devices function as counterparts to Zener diodes by regulating current over a broad voltage range rather than voltage over a broad current range. The UR-1 designation identifies the specific DO-213AB MELF package variant within this product line.

Replacement Considerations

The 1N5284 is the axial leaded equivalent. For direct pin-compatible replacement, verify the 1N5284UR-1. Military grades such as JAN1N5284UR-1 offer qualification per MIL-PRF-19500/463 but require verification of specific lot traceability requirements.