AM254051SF-5H 120W 2.25–4.25GHz RF Power Amplifier
Product Specifications
| Parameter | Specification |
| Product Type | GaN Solid-State Power Amplifier |
| Typical Frequency Range | 2.25–4.25GHz |
| Guaranteed Frequency Range | 2.5–4.0GHz |
| Saturated Output Power | 51dBm / approximately 120W typical at 28V |
| Small-Signal Gain | 52dB typical |
| Gain Ripple | ±2dB typical |
| Supply Voltage | +28V |
| Quiescent Current | 10A |
| Current at Saturation | 20A typical |
| Noise Figure | 11dB typical |
| Output IP3 | 55dBm typical |
| Input Return Loss | 15dB typical |
| Output Return Loss | 12dB typical |
| Switching Time | Less than 5µs |
| RF Control | TTL on/off |
| RF Connectors | Female SMA |
| Impedance | 50Ω |
| Dimensions | 6 × 4 × 0.75 inches |
| Operating Temperature | −40°C to +85°C |
The specifications are based on AMCOM’s preliminary February 2025 datasheet. Final performance should be confirmed for the required frequency, bias, temperature and thermal conditions.
AM254051SF-5H Product Overview
The AM254051SF-5H is a compact GaN SSPA module covering 2.25GHz to 4.25GHz. It typically delivers 51dBm, or approximately 120W, of CW saturated output power, together with 52dB small-signal gain.
Its frequency range supports S-band and lower C-band systems. The amplifier is internally matched to 50Ω and uses female SMA connectors for RF input and output.
Key Features
2.25–4.25GHz broadband operation
Approximately 120W CW output power
52dB typical small-signal gain
GaN solid-state amplifier technology
TTL-controlled RF on/off function
Analogue temperature-monitor output
50Ω matched RF input and output
Compact 6 × 4 × 0.75-inch housing
Six mounting holes for heatsink installation
The module is identified by AMCOM as customisable for application-specific requirements.
Typical Applications
The AM254051SF-5H is suitable for:
Radar transmitters
Fixed microwave backhaul
RF instrumentation and measurement
S-band communication systems
Military and aerospace electronics
High-power transmitter development
These applications are listed in AMCOM’s official product datasheet.
Control and Temperature Monitoring
The module includes a TTL input for switching the RF output on or off. A TTL level below 1V disables the RF output, while a level above 2.5V enables it. Switching time is specified below 5µs.
An analogue temperature-monitor output is also provided. AMCOM specifies the output relationship as approximately:
Vout = 0.45V + 10mV × temperature in °C
For example, the monitor voltage is approximately 0.95V at 50°C.
Mechanical and Thermal Requirements
The AM254051SF-5H uses an aluminium housing with silver-nickel plating and six mounting holes. A suitable external heatsink must be attached to the bottom of the module during operation.
Thermal design should consider the 10A quiescent current, approximately 20A current at saturation, ambient temperature and intended CW duty cycle.
Frequently Asked Questions
What frequency range does the AM254051SF-5H cover?
Its typical operating range is 2.25–4.25GHz. The preliminary datasheet lists 2.5–4.0GHz as the minimum guaranteed range.
How much RF output power does it provide?
The amplifier typically delivers 51dBm, equivalent to approximately 120W, at a 28V supply. At 24V, typical saturated output power is approximately 50.5dBm.
Does the amplifier support RF on/off control?
Yes. The AM254051SF-5H includes a TTL control input with a switching time of less than 5µs.
Does the module require a heatsink?
Yes. AMCOM specifies that a proper heatsink must be used to remove heat from the bottom of the amplifier package.
AM254051SF-5H Price and Availability
DataStorageIC supplies AMCOM RF and microwave components for engineering evaluation, prototype development and production requirements.
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