MA4P7438-287T

RF Diode Overview

The MA4P7438-287T is a silicon PIN diode from the MACOM SMPP series, housed in an SOT-23 (Case Style 287) surface-mount package. It features a thick intrinsic region designed for low distortion in attenuator circuits. Key electrical specifications include a reverse voltage rating of 200 V and a total capacitance of 0.35 pF at 50 V. The maximum series resistance is 10.0 Ohms at 10 mA forward current. The device has a nominal minority carrier lifetime of 3.0 µs and supports an operating temperature range from -65°C to +125°C.

RF Diode Feature Summary

• Thick intrinsic region engineered to minimize signal distortion in attenuator applications
• High reverse voltage capability suitable for robust RF control circuitry
• Lead-free surface mount construction compliant with RoHS directives

RF Diode Applications

• Current controlled attenuator circuits
• Automatic Gain Control (AGC) functions
• Infrastructure and CATV microwave control systems

RF Diode Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact package type and configuration. Ensure that the selected variant matches the required thermal and electrical ratings for the intended application environment before finalizing procurement orders.

RF Diode Selection Notes

Select this component when low distortion performance is critical for attenuator designs requiring high reverse voltage handling. Compare the 10.0 Ohm series resistance and 3.0 µs carrier lifetime against alternative models like the MA4P7437 or MADP-007167 to determine if the specific I-region thickness meets the system's linearity requirements.

RF Diode Part Context

This part belongs to the MACOM SMPP Series of Surface Mount Plastic PIN Diodes. It shares the SOT-23 footprint with other variants such as the MA4P7436 and MA4P7433 but is distinguished by its thicker intrinsic layer optimized for attenuator use rather than pure switching speed.

RF Diode Replacement Considerations

Public confirmed substitute part numbers: MADP-007438-0287FT.