High-Performance RF Adapters, Couplings, Terminators & More
Ensure seamless connectivity, optimal signal integrity, and minimal power loss with our premium selection of RF adapters, terminations, attenuators, couplers, impedance transformers, and DC blocks. Whether you're working in laboratory environments, high-frequency applications, or precision measurement setups, we provide reliable solutions designed for durability and performance.
Terminations
Our precision 50Ω terminations are available in SMA, BNC, and N connectors, covering bandwidths up to 12.4 GHz. These components are essential for minimizing signal reflections and optimizing system performance in RF circuits.
- SMA Terminations – Up to 12.4 GHz, 0.5W
- BNC Terminations – Up to 3 GHz, 0.5W & 2 GHz, 1W
- N Terminations – Up to 3 GHz, 1W
| Order number | Article | Connector | Bandwidth | Immunity | |||
|---|---|---|---|---|---|---|---|
|
|
B090101 | T91241 | SMA | 12.4 GHz | 0.5 W | |
|
|
B020573 | T1301 | BNC | 3 GHz | 0.5 W | |
|
£34.00 GBP excluding VAT
|
|
|
119-916-175 | T1302 | BNC | 2 GHz | 1 W |
|
|
B010712 | T2302 | N | 3 GHz | 1 W | |
Feed-Trough Terminations
For stable impedance matching and signal transfer, our 50Ω BNC feedthrough terminations support up to 1 GHz with up to 1W power handling.
| Order number | Connector | Bandwidth | Input impedance | Immunity | |||
|---|---|---|---|---|---|---|---|
|
|
D010031 | BNC | 500 MHz | 50 Ω | 0.5 W | |
|
£95.00 GBP excluding VAT
|
|
|
119-916-170 | BNC | 1 GHz | 50 Ω | 1 W |
|
|
740-1FM-030 | BNC-M to BNC-F | 50 Ω | |||
50 Ohm Attenuators
Control signal strength while maintaining impedance integrity with our precision attenuators. Available in SMA, BNC, and N connectors, with attenuation levels of 3 dB, 6 dB, 10 dB, and 20 dB, supporting frequencies up to 12.4 GHz.
| Order number | Article | Connector | Bandwidth | Immunity | |||
|---|---|---|---|---|---|---|---|
|
|
A090272 | A912403 | SMA | 3 dB, DC to 12,4 GHz | 1 W | |
|
|
A090302 | A912406 | SMA | 6 dB, DC to 12,4 GHz | 1 W | |
|
£61.00 GBP excluding VAT
|
|
|
A090342 | A912410 | SMA | 10 dB, DC to 12,4 GHz | 1 W |
|
|
A090352 | A912420 | SMA | 20 dB, DC to 12,4 GHz | 1 W | |
|
|
A021462 | A13003 | BNC | 3 dB, DC to 3 GHz | 1 W | |
|
|
A021492 | A13006 | BNC | 6 dB, DC to 3 GHz | 1 W | |
|
|
A021532 | A13010 | BNC | 10 dB, DC to 3 GHz | 1 W | |
|
|
A021542 | A13020 | BNC | 20 dB, DC to 3 GHz | 1 W | |
|
|
A011592 | A23003 | N | 3 dB, DC to 3 GHz | 1 W | |
|
|
A011602 | A23006 | N | 6 dB, DC to 3 GHz | 1 W | |
|
|
A011612 | A23010 | N | 10 dB, DC to 3 GHz | 1 W | |
|
|
A011622 | A23020 | N | 20 dB, DC to 3 GHz | 1 W | |
Coaxial Couplers
Ensure smooth signal transitions with our range of couplers and T-adapters, including:
- SMA, BNC, and N connectors with bandwidths up to 18 GHz
- Male-to-male, female-to-female, and plug-to-socket options
- High electric strength (up to 1500V AC) and low VSWR for superior performance
| Order number | Article | Connector | Bandwidth | Electric strength | V.S.W.R. (max) | Operating range (°C) | Input impedance | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
C061360 | SMA136 | SMA to SMA (male) | DC to 18 GHz | 1000 V AC/min | 1.4 | '-10 to +40 | 50 Ω | |
|
|
C020352 | BNC035 | BNC to BNC (male) | DC to 4 GHz | 1500 V AC/min | 1.2 | '-10 to +40 | 50 Ω | |
|
|
C020360 | BNC036 | BNC to BNC (female) | DC to 4 GHz | 1500 V AC/min | 1.2 | '-10 to +40 | 50 Ω | |
|
|
C014120 | N412 | N to N (male) | DC to 4 GHz | 1000 V AC/min | 1.35 | '-10 to +40 | 50 Ω | |
|
|
C010510 | N051 | N to N (female) | DC to 4 GHz | 1500 V AC/min | 1.35 | '-10 to +40 | 50 Ω | |
T Adaptors
| Order number | Article | Connector | Bandwidth | Electric strength | Operating range (°C) | Input impedance | |||
|---|---|---|---|---|---|---|---|---|---|
|
|
T064570 | SMA457 | SMA-TA-JJJ | DC to 12.4 | 500 V AC/min | '-10 to +40 | 50 Ω | |
|
|
C020375 | BNC037 | BNC (male) to 2x BNC (female) | DC to 4 GHz | 1500 V AC/min | '-10 to +40 | 50 Ω | |
|
|
C010530 | N053 | N to 2x N (female) | DC to 4 GHz | 1500 V AC/min | '-10 to +40 | 50 Ω | |
Interseries Adaptors
Easily transition between different connector types with our interseries adapters, supporting SMA, BNC, and N connectors up to 4 GHz, with low insertion loss and high durability.
| Order number | Article | Connector | Bandwidth | Electric strength | V.S.W.R. (max) | Operating range (°C) | Input impedance | |||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
C100622 | BA062 | SMA (male) to BNC (female) | DC to 4 GHz | 1000 V AC/min | 1.2 | '-10 to +40 | 50 Ω | |
|
|
C100632 | BA063 | SMA to BNC (female) | DC to 4 GHz | 1000 V AC/min | 1.2 | '-10 to +40 | 50 Ω | |
|
|
C100574 | BA057 | N (male) to SMA (female) | DC to 4 GHz | 1000 V AC/min | 1.4 | '-10 to +40 | 50 Ω | |
|
|
C100015 | BA001 | N (male) to BNC (female) | DC to 4 GHz | 1500 V AC/min | 1.2 | '-10 to +40 | 50 Ω | |
|
|
C100020 | BA002 | BNC (male) to N (female) | DC to 4 GHz | 1500 V AC/min | 1.4 | '-10 to +40 | 50 Ω | |
Impedance Transformers
Convert between 50Ω and 75Ω systems with minimal signal degradation using our high-quality impedance transformers.
| Order number | Article | Connector | Bandwidth | V.S.W.R. (max) | Operating range (°C) | Insertion loss (max) | Conversion | Input power (max) | Input impedance | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
D015440 | PD544 | N (male) to N75 (female) | DC to 3 GHz | 1.2 | '-10 to +40 | 5.7 ± 0.5 (DC to 3 GHz) | Resistor | 0.5 W | 50 - 75 Ω | |
DC Blocks
Protect sensitive equipment from unwanted DC interference while maintaining a clean RF signal. Our DC blockers operate across 0.01 Hz to 18 GHz, available in SMA and N configurations.
| Order number | Article | Connector | Bandwidth (-1 dB) | V.S.W.R. (max) | Operating range (°C) | Insertion loss (max) | Input voltage | Input impedance | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
D015531 | PD553 | SMA (male) to SMA (female) | 0.0.1 to 18 GHz | 1.4 | '-10 to +40 | 1 | ± 10 (DC+AC peak) | 50 Ω | |
|
|
D015540 | PD554 | N (male) to N (female) | 0.0.1 to 8 GHz | 1.4 | '-10 to +40 | 1 | ± 10 (DC+AC peak) | 50 Ω | |
|
DCB500HZ-8GHZ | DCB500HZ-8GHZ | SMA (male) to SMA (female) | 500 Hz to 8 GHz | 1.5 | '-40 to +85 | 1.4 | - | 50 Ω | ||
Laboratory adaptors BNC to 4 mm
Perfect for test and measurement applications, our BNC to 4mm adapters ensure secure and reliable connections between RF instruments and standard lab equipment.
| Order number | Article | |||
|---|---|---|---|---|
|
|
181-566-100 | BNC plug to 1 x 4 mm plug | |
|
|
181-576-ISO | BNC plug to 2 x 4 mm socket insulated | |
|
|
181-675-ISO | BNC socket to 2 x 4 mm plug insulated | |
|
|
890-880-116 | Short circuit adapter / coupler red 2x4mm | |
|
|
890-880-117 | Short circuit adapter / coupler black 2x4mm | |
Why Choose Our RF Components?
✔ Premium Quality – High-grade materials and precision engineering for low loss and high reliability
✔ Broad Compatibility – Supports SMA, BNC, and N connectors across multiple applications
✔ Optimized Performance – Low VSWR, high power handling, and excellent frequency response
✔ Quick Lead Times – Fast delivery for stocked items, and custom orders available within 8-10 weeks
Find the right RF adapter, termination, or attenuator for your needs today!
Adapters, Couplings, Terminators
38 products
Coax-Connector: 50Ω termination BNC, to 2.0GHz, 1W
£34.00 GBP
excluding VAT
UK stock — Qty: 0
Sidebar
Visual separator
Visual separator
UK Semiconductors Conference 2026
Visual separator
IEEE 27th Workshop on Control and Modeling for Power Electronics
Visual separator
Engineering Design Show 2026
