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Product Detailed Parameters
- Description：CURRENT REGULATOR
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Anode - Cathode (Vak)(Max)：100V
- Regulator Current (Max)：1.32mA
- Voltage - Limiting (Max)：1.45V
- Power - Max：500mW
- Applications：-
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：DO-213AB, MELF (Glass)
- Supplier Device Package：DO-213AB (MELF, LL41)
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N5299UR-1/TR is a surface mount current regulator diode in the DO-213AB (MELF) package. It provides a nominal regulating current of 1.32 mA with a maximum working peak voltage of 100 V and steady-state power dissipation of 475 mW at +125 °C. The device features a minimum dynamic impedance of 0.64 MΩ and a minimum knee impedance of 0.155 MΩ. Qualified per MIL-PRF-19500/463, it operates within a junction temperature range of -65 °C to +175 °C.
Feature Summary
- JEDEC registered surface mount equivalent of the 1N5283 through 1N5314 series.
- High source impedance for stable current regulation.
- Internal metallurgical bond construction.
Applications
- Current limiting applications requiring broad operating voltage ranges.
- Temperature-compensated Zener reference circuits.
- Fixed current sources for biasing semiconductor devices.
Procurement Notes
Verify the specific ordering suffix against the manufacturer's datasheet to confirm qualification level and compliance status. The 'TR' suffix indicates tape and reel packaging. Confirm RoHS compliance requirements as commercial versions may differ from qualified levels. Ensure the procurement specification matches the required MIL-PRF-19500/463 qualification if applicable.
Selection Notes
Select this component when a surface mount current regulator is needed with a nominal current near 1.32 mA. Verify that the DO-213AB package dimensions fit the design constraints. Check the thermal resistance and derating curves to ensure the 475 mW power dissipation limit is not exceeded under expected operating conditions.
Part Context
This part belongs to the 1N5283UR-1 through 1N5314UR-1 series of current regulator diodes. These devices serve as counterparts to Zener diodes by regulating current over a broad voltage range rather than voltage over a broad current range. The series offers standard 10% tolerances and is available in both axial-leaded and surface mount packages.
Replacement Considerations
Direct equivalents include other manufacturers' MELF-style current regulators with matching 1.32 mA nominal current and 100 V rating. Verify pinout polarity and package dimensions before substitution. Commercial grade replacements may lack the radiation hardening or specific qualification levels of the original part.
FAQ
What is the maximum working peak voltage for the 1N5299UR-1?
The maximum working peak voltage (VWM) is 100 V.
Is the 1N5299UR-1 inherently radiation hard?
Yes, the device is described as inherently radiation hard in accordance with Microsemi MicroNote 050.
What is the typical tolerance for the regulating current?
Standard current tolerances are plus or minus 10%.
