BLA8G1011LS-300U

Overview

The BLA8G1011LS-300 is a 300 W LDMOS power transistor designed for avionics applications operating between 1030 MHz and 1090 MHz. It features an internally matched earless flanged ceramic package (SOT502B) with two leads. The device operates at a drain-source voltage of 32 V, delivering 300 W output power with a typical gain of 16.5 dB and drain efficiency of 56%. Key electrical limits include a maximum drain-source voltage of 65 V and a junction temperature rating of 225 °C.

Feature Summary

• Internally matched for ease of use
• Enhanced ruggedness capable of withstanding high VSWR
• Integrated ESD protection
• Excellent thermal stability

Applications

• Avionics transmitter applications in the 1030 MHz to 1090 MHz frequency range

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm the package variant. The LS-300 designation corresponds to the SOT502B earless flanged ceramic package. Confirm RoHS compliance status and ensure that handling procedures strictly follow electrostatic discharge precautions as specified in the product data sheet.

Selection Notes

Select this component when designing avionics transmitters requiring 300 W output within the 1030 MHz to 1090 MHz band. Ensure the application circuit supports a 32 V drain supply and class-AB operation. Verify that the PCB layout accommodates the SOT502B flanged package dimensions and provides adequate thermal management for the case temperature requirements.

Part Context

This part belongs to the BLA8G1011L(S)-300(G) family from Ampleon. Variants differ by package construction: L-300 uses SOT502A, LS-300 uses SOT502B, L-300G uses SOT502F, and LS-300G uses SOT502E. All variants share identical RF performance characteristics and are optimized for broadband avionics operations.

Replacement Considerations

Direct replacements within the same family include BLA8G1011L-300, BLA8G1011L-300G, and BLA8G1011LS-300G. Substitution requires verifying that the alternative package type matches the mechanical mounting constraints of the existing design.

FAQ

What is the maximum load mismatch the device can withstand?

The device is enhanced rugged and can withstand a load mismatch corresponding to VSWR = 10:1 through all phases under specified pulsed RF conditions.

What is the recommended test frequency for the rated performance?

Typical RF performance data, including 300 W output power, is measured at a test frequency of 1060 MHz.

How does the gate-source threshold voltage vary?

The gate-source threshold voltage typically ranges from 1.5 V to 2.3 V, with a typical value of 1.8 V at a drain current of 450 mA.