The SPDT (Single Pole Double Throw) RF switch is a high-performance microwave switch specifically designed for high-frequency signal routing, enabling rapid switching between two independent paths. This product features a low-loss, high-isolation design, making it suitable for demanding applications such as microwave communications, radar, and test measurement, ensuring stable and reliable signal transmission.
Key Advantages:
1. Excellent RF performance
Ultra-low insertion loss: Minimizes signal attenuation and enhances system efficiency.
High isolation: Effectively prevents channel crosstalk, ensuring signal purity.
Wideband support: Covers microwave and millimeter-wave frequencies, suitable for high-frequency applications such as 5G and satellite communications.
2. Fast switching and high reliability
High-speed switching: Meets real-time signal switching requirements for applications like phased array radars and frequency-hopping systems.
Long lifespan: Utilizes high-quality RF relays or solid-state switching technology to ensure long-term stable operation.
Low-power design: Ideal for portable or battery-powered devices.
3. Rugged and durable structural design
Compact packaging: Adapts to high-density PCB layouts.
Wide temperature range: Suitable for extreme environments, such as aerospace and military communications.
High ESD protection: Enhances anti-static interference capability, improving system reliability.
Typical Applications:
1. Microwave communication systems
5G base stations and millimeter-wave communications: Used for antenna switching and MIMO system signal routing.
Satellite communications: Enables low-loss signal switching in L/S/C/Ku/Ka bands.
2. Radar and electronic warfare
Phased array radar: Rapidly switches T/R (Transmit/Receive) channels to improve radar response speed.
Electronic countermeasures: Facilitates dynamic frequency hopping to enhance anti-jamming capabilities.
3. Test and measurement equipment
Vector network analyzers: Automates test port switching to improve calibration efficiency.
Microwave signal sources and spectrum analyzers: Simplifies testing processes with multi-channel signal switching.
4. Aerospace and defense
Airborne/shipborne RF systems: High-reliability designs meet military standards.
Satellite payload switching: Ensures stable operation in space environments, with optional radiation-hardened versions.
Qualwave Inc. provide broadband and highly reliable SP2T PIN diode switches with frequency coverage from DC to 40GHz. This article introduces a SP2T PIN diode switches with frequency coverage of 0.1~4GHz.
1. Electrical Characteristics
Frequency: 0.1~4GHz
Supply Voltage: +5±0.5V
Current: 50mA typ.
Control: TTL High - 1
TTL Low/NC - 0
Frequency (GHz) | Insertion Loss (dB) | Isolation (dB) | VSWR (on state) |
0.1~1 | 1.4 | 40 | 1.8 |
1~3.5 | 1.4 | 40 | 1.2 |
3.5~4 | 1.8 | 35 | 1.2 |
2. Absolute Maximum Ratings
RF Input Power: +26dBm
Control Voltage Range: -0.5~+7V DC
Hot Switch Power: +18dBm
3. Mechanical Properties
Size*1: 30*30*12mm
1.181*1.181*0.472in
Switching Time: 100nS max.
RF Connectors: SMA Female
Power Supply Connectors: Feed Through/Terminal Post
Mounting: 4-Φ2.2mm through-hole
[1] Exclude connectors.
4. Environment
Operating Temperature: -40~+85℃
Non-operating Temperature: -65~+150℃
5. Outline Drawings


Unit: mm [in]
Tolerance: ±0.2mm [±0.008in]
6. How To Order
QPS2-100-4000-A
If you are interested in this product, please feel free to contact us. We are happy to provide more valuable information. We support customization services for frequency range, connector types, and package dimensions.
Post time: Jul-31-2025