MAX2602ESA+

Overview

The MAX2602ESA is a silicon bipolar RF power transistor in an 8-pin SOIC package, operating from -40°C to +85°C. It delivers 1W of output power at 900MHz with 58% collector efficiency from a 3.6V supply. The device includes an on-chip biasing diode for thermal tracking. Key electrical parameters include a VCEO of 17V, VEBO of 2.3V, and a maximum average collector current of 1200mA. Power gain is typically 11.6dB, with a noise figure of 3.3dB. Continuous power dissipation is rated at 6.4W.

Feature Summary

• Integrated thermally matched biasing diode for accurate collector current control across temperature variations
• Operates directly from single Li-Ion or three NiCd/NiMH battery cells without requiring negative bias voltages
• Eliminates the need for voltage inverters, sequencing circuitry, or drain switches found in GaAsFET designs
• Thermally enhanced 8-pin SO package with backside slug for efficient heat dissipation

Applications

• Narrow-Band PCS (NPCS) transmitters
• 915MHz ISM band transmitters
• Microcellular GSM (Power Class 5) systems
• AMPS cellular phones
• Digital cellular phones and two-way paging devices

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Ensure proper handling procedures are followed due to electrostatic sensitivity. Validate that the specific ordering suffix matches the required packaging configuration for the intended manufacturing process.

Selection Notes

Select this component for applications requiring high efficiency at low supply voltages. The integrated bias diode simplifies thermal compensation circuits compared to the MAX2601 variant. Ensure the design accommodates the 8-pin SOIC footprint and provides adequate ground plane connectivity for the backside slug to manage thermal dissipation effectively within the specified temperature range.

Part Context

This part belongs to the MAX2601/MAX2602 family of RF power transistors designed for portable wireless equipment. While the MAX2601 lacks internal biasing components, the MAX2602 integrates a matching diode to stabilize collector current against thermal drift. Both utilize silicon bipolar technology to replace more complex GaAsFET solutions in 900MHz applications.

Replacement Considerations

The MAX2601ESA serves as a functional substitute if external biasing networks are preferred or already implemented. Verify pin compatibility and ensure the replacement meets the same thermal and electrical requirements for the specific application environment.