1N5299 TR TIN/LEAD

Overview

The Central Semiconductor Corp 1N5299 TR TIN/LEAD is a silicon field-effect current regulator diode designed to maintain a constant current over a wide voltage range. It utilizes the DO-35 double-plug axial leaded case for improved thermal characteristics and space efficiency. The nominal regulator current (IP) is 1.20 mA, with a minimum of 1.02 mA and a maximum of 1.38 mA at VT=25V. Key electrical parameters include a minimum dynamic impedance (ZT) of 0.640 MΩ, a minimum knee impedance (ZK) of 0.155 MΩ, and a maximum limiting voltage (VL) of 1.45 V at IL=0.8 x IP MIN. The device supports a peak operating voltage of 100 V and power dissipation of 600 mW, functioning within a junction temperature range of -65°C to +200°C.

Feature Summary

• Provides stable current regulation across a broad voltage spectrum using silicon field-effect technology.
• DO-35 double-plug package construction enhances thermal performance and reduces physical footprint.
• Manufactured with superior lot-to-lot consistency and high reliability standards.

Applications

• Constant current sources for LED biasing circuits
• Current limiting protection in electronic loads
• Active load implementations for testing power supplies

Procurement Notes

Verify that the ordering suffix matches the required plating specification. The "TR" designation indicates tape and reel packaging, while "TIN/LEAD" specifies the terminal finish. Confirm the specific quantity per reel aligns with production requirements before finalizing the purchase order.

Selection Notes

Select this component when a fixed current source is required independent of voltage fluctuations. Ensure the circuit's maximum voltage does not exceed the 100 V peak rating. Verify that the desired nominal current of 1.20 mA fits the design constraints compared to other values in the 1N5283 through 1N5314 series.

Part Context

This part belongs to the 1N5283 through 1N5314 series of silicon current limiting diodes manufactured by Central Semiconductor Corp. The series offers various nominal currents ranging from 0.22 mA to 4.7 mA, all housed in the cost-effective DO-35 double-plug case designed for axial through-hole mounting.

Replacement Considerations

Other members of the 1N5283-1N5314 series may serve as substitutes if different current ratings are acceptable. Cross-manufacturer equivalents should be evaluated based on matching nominal current, impedance, and voltage limits.

FAQ

What is the maximum limiting voltage for the 1N5299?

The maximum limiting voltage (VL) is 1.45 V, measured at a current of 0.8 times the minimum regulator current.

How is the pulse width calculated for pulsed operation?

The datasheet notes that the pulsed method uses a pulse width in milliseconds equal to 27.5 divided by the nominal regulator current (IP NOM) in mA.

What is the minimum dynamic impedance specified?

The minimum dynamic impedance (ZT) at VT=25V is 0.640 MΩ.