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SMD Circulator(SMT), Surface Mount Device

Frequency up to 40GHz.

  • SMD Circulator (SMT) is a compact and versatile component designed for seamless integration into surface mount assemblies.
  • This circulator delivers high isolation and efficient signal routing for modern communication systems, radar systems, and RF front-end modules.
  • Compatible with SMT assembly, the SMD Circulator(SMT) enables space- saving, efficient assembly while ensuring reliable signal routing and isolation in surface- mount circuitry.
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Typical Drop-in Circulator

Key Features & Advantages

  • Miniaturization & Light Weight:LTCC and SMT technology significantly reduce size and weight compared to traditional circulator designs, making them ideal for space - and weight- constrained applications such as mobile phones, drones, and phased array radar T / R modules.
  • High Reliability:All- solid - state design with no moving parts resists vibration and harsh environments, while ceramic and metal packaging ensures excellent hermeticity and thermal stability.
  • Suitable for Automated Production:The SMD package is fully compatible with PCB and SMT assembly, enabling fast, low- cost, and high - consistency automated production with improved manufacturing efficiency.
  • Excellent RF Performance:Low insertion loss(<0.5 dB), high isolation(> 20 dB), and low VSWR(< 1.25) ensure efficient transmission, minimal reflection, and strong reverse isolation.
  • Broadband Performance:Designed for stable operation over wide frequency bands, covering applications from hundreds of MHz to tens of GHz.

Typical Applications

  • Mobile Communications: 4G/5G/6G base stations, small cells.
  • Radar Systems: Military, meteorological, automotive radar.
  • Satellite Communication: VSAT, satellite/ground terminals.
  • Test & Measurement Equipment: Vector Network Analyzers, signal sources, etc.
  • Internet of Things (IoT) Devices.

Electrical Performance Table and Product Appearance

0.336~0.344GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCTC336T344M⬇ 0.336~0.344 FULL 0.40 18 1.29 -40~+125℃ 2000/200 Clockwise
HDCTD336T344M⬇ 0.336~0.344 FULL 0.40 18 1.29 -40~+125℃ 2000/200 Counter Clockwise
0.336~0.344GHz SMD Circulator(SMT)
1.8~3.6GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HLCU1805T1880M⬇ 1.805~1.88 FULL 0.75(-35~+125℃) 13.0(-35~+125℃) 1.58(-35~+125℃) -40~125℃ 10/2
HLCU2110T2170M⬇ 2.11~2.17 FULL 0.6(-35~+85℃)
0.65(+85~+125℃) 		13.0(-35~+125℃) 1.58(-35~+125℃) -40~125℃ 10/2
HLCU2500T2700M⬇ 2.5~2.7 FULL 1.3(-40~+125℃) 11.0(-40~+125℃) 1.78(-40~+125℃) -40~125℃ 10/2
HLCU3300T3600M⬇ 3.3~3.6 FULL 0.8(-10~+85℃)
1.0(+85~+105℃) 		12.0(-10~+85℃) 1.67(-10~+85℃) -40~125℃ 10/2
1.8~3.6GHz SMD Circulator(SMT)
2.0~2.1GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCE20T21M⬇ 2.0~2.1 FULL 0.4 20 1.4 -55~+85℃ /80 Clockwise
2.0~2.1GHz SMD Circulator(SMT)
2.496~3.8GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCE2496T2960M⬇ 2.496~2.96 FULL 0.35(0.3) 18(20) 1.29 (1.22 ) -40~+125 200/50 Clockwise
HDCF2496T2960M⬇ 2.496~2.96 FULL 0.35(0.3) 18(20) 1.29 (1.22 ) -40~+125 200/50 Counter Clockwise
HDCE34T37G⬇ 3.4~3.7 FULL 0.3(0.28/0.33) 20(18/22) 1.22 (1.29 /1.17 ) -40~+125 200/50 Clockwise
HDCF34T37G⬇ 3.4~3.7 FULL 0.3(0.28/0.33) 20(18/22) 1.29 (1.22 ) -40~+125 200/50 Counter Clockwise
HDCE34T38G⬇ 3.4~3.8 FULL 0.35(0.3) 18(20) 1.29 (1.22 ) -40~+125 200/50 Clockwise
HDCF34T38G⬇ 3.4~3.8 FULL 0.35(0.3) 18(20) 1.29 (1.22 ) -40~+125 200/50 Counter Clockwise
2.496~3.8GHz SMD Circulator(SMT)
3.4~3.6GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCE34T36G⬇ 3.4~3.6 FULL 0.25 20(22) 1.22 (1.17 ) -40~+125 200/50 Clockwise
HDCF34T36G⬇ 3.4~3.6 FULL 0.25 20(22) 1.22 (1.17 ) -40~+125 200/50 Counter Clockwise
3.4~3.6GHz SMD Circulator(SMT)
3.4~5.0GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCE34T38G⬇ 3.4~3.8 FULL 0.3(0.28/0.35) 20(18/22) 1.22 (1.29/1.17) -40~+125 800/80 Clockwise
HDCF34T38G⬇ 3.4~3.8 FULL 0.3(0.28/0.35) 20(18/22) 1.22 (1.29/1.17) -40~+125 800/80 Counter Clockwise
HDCE46T50G⬇ 4.6~5.0 FULL 0.3(0.28/0.33) 20(19/23) 1.22 (1.25 /1.15 -40~+125 800/150 Clockwise
HDCF46T50G⬇ 4.6~5.0 FULL 0.3(0.28/0.33) 20(19/23) 1.22 (1.25 /1.15 ) -40~+125 800/150 Counter Clockwise
3.4~5.0GHz SMD Circulator(SMT)
5.0~6.0GHz SMD Circulator(SMT)
Model Frequency(GHz) BW Max Insertion loss(dB) Max Isolation(dB)Min VSWR Max operating temperature(℃) PK/CW/RP(Watt) Direction
HDCE50T60G⬇ 5.0~6.0 FULL 0.35 22 1.20 -55~+85℃ /50 Clockwise
HDCF50T60G⬇ 5.0~6.0 FULL 0.35 22 1.20 -55~+85℃ /50 Counter Clockwise
8.0~18.0GHz Microstrip Circulator Appearance

About HzBeat

HzBeat is a leading RF component manufacturer specializing in RF circulators and isolators, as a global supplier of RF circulators and isolators (20MHz–200GHz), we providing microstrip, drop-in, coaxial, and waveguide solutions for communication systems, radar, satellite, and medical imaging.

For detailed technical documentation, sample requests, or customization needs, please do not hesitate to contact us. — we respond within 24 hours to ensure you get precise solutions for your design.

Customization & Selection Guide

  • Operating Band:Ensure it covers all frequencies required by your system.
  • Power Handling Capacity:Select based on your system's transmit power (average and peak), allowing a certain margin.
  • Performance Requirements:Define specific requirements for Insertion Loss, Isolation, and VSWR/Return Loss.
  • Environmental Conditions:Consider operating temperature range, vibration, humidity, etc.
  • Cost & Delivery:Balance cost and project timeline while meeting performance requirements.

Why Choose Our Product

  • Profound Technical Expertise:We have over 18 years of R&D experience in ferrite materials and microwave magnetics.
  • Fully Automated Production Lines:Ensure consistent excellence and reliability in every unit.
  • Professional Application Support:Our engineering team provides timely technical selection, customization, and failure analysis services.
  • Competitive Pricing & Lead Times:Economies of scale from mass production enable us to respond quickly to your orders.

Typical Drop-in Circulator
Typical Drop-in Circulator
Broadband Drop-in Circulator
Broadband Drop-in Circulator

Questions? Feel Free to Reach Out Via Message.

Tell us frequency band, target IL/Isolation/VSWR, power level and timeline — we’ll match the best topology and deliver S-parameters.We will contact you within 24 hours.