Surface Mount Circulator-Sichuan TYT Technology Co., Ltd.

Product Introduction:

An RF surface-mount circulator is a circulator packaged using surface-mount technology. Its key feature is that it can be directly and rapidly mounted onto PCB boards. It combines signal directional circulation and separation functions, making it a crucial component for achieving high-density integration and miniaturization of RF frontends.
Product features:

Surface-mount packaging: Uses standardized packages that are directly mounted onto printed circuit boards via reflow soldering, eliminating the need for cables or connectors.

High-density integration and miniaturization: With small size, light weight, and low profile, these components can be closely arranged alongside other circuit elements (such as chip amplifiers and filters), making them an ideal choice for modern compact devices—including 5G AAUs and mobile phone RF front-ends.

Suitable for automated mass production: Perfectly compatible with SMT production lines, significantly enhancing production efficiency and consistency while reducing assembly costs.

The core functionality remains unchanged: it continues to maintain the fundamental feature of directional, cyclic signal transmission across multiple ports (e.g., 1→2, 2→3, 3→1), enabling functions such as transmit-receive isolation and signal separation.

Performance trade-offs: Compared to coaxial structures, this design typically has lower power handling capacity and thermal dissipation capability; however, it is sufficient to meet the application requirements of the vast majority of consumer electronics and commercial communication devices.

Product Specifications:

Product Model	Frequency Minimum value MHz	Frequency Maximum value MHz	Bandwidth Maximum value	Insertion loss Maximum value dB	Isolation degree Minimum value dB	Standing wave ratio Maximum value	By power W	Reflected power W	Impedance Omega	Connection method	Operating temperature Celsius	Storage temperature Celsius	Size Length × Width × Height MM
SMTH-D10	1800	6000	10%	0.30	23.0	1.20	30	-	50	SMT	-40~+85	-50~+90	Φ10*7
SMTH-D12.3A	2900	6000		0.30	20.0	1.25	30		50	SMT	-40~+85	-50~+90	Φ12.3 × 7
SMTH-D12.3B	1400	6000		0.30	20.0	1.20	30		50	SMT	-40~+85	-50~+90	Φ12.3 × 7
SMTH-D12.5	800	6000		0.30	23.0	1.20	30		50	SMT	-40~+85	-50~+90	Φ12.5×7
SMTH-D15	1000	5000		0.30	23.0	1.20	60		50	SMT	-40~+85	-50~+90	Φ12.5×7
SMTH-D18	1400	4000		0.25	23.0	1.20	100/300		50	SMT	-40~+80	-50~+90	Φ18*8
SMTH-D20	400	3000		0.30	23.0	1.20	60/100		50	SMT	-40~+80	-50~+90	Φ20*8
SMTH-D25.4	400	1800		0.20	25.0	1.15	100/200		50	SMT	-40~+80	-50~+90	Φ25*9.5
SMTH-D35.0	300	1000		0.30	25.0	1.15	300		50	SMT	-40~+80	-50~+90	Φ35*10.5