Shanghai Bing Wire & Cable Co., Ltd.
sales@shbing.com
86--19370717369
Product Details
Place of Origin: Shanghai, China
Brand Name: Bing Wire & Cable
Certification: ISO, RoHS, SGS
Model Number: SR-250C-TP
Document: SR-250C-TP.pdf
Payment & Shipping Terms
Minimum Order Quantity: 1 ft
Price: Negotiable
Delivery Time: 7-15 work days
Payment Terms: T/T,Western Union,Paypal
Supply Ability: 5000ft 7days
|
Cable Family:
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Semi-Rigid Cable
|
Center Conductor:
|
Silver Plated Copper
|
Conductor Type:
|
Solid
|
Dielectric:
|
Solid PTFE
|
Outer Conductor:
|
Tinned Copper Tube
|
Impedance:
|
50 Ohm
|
Capacitance:
|
95.2 PF/m
|
Outer Diameter:
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0.250'' (6.350mm)
|
|
Cable Family:
|
Semi-Rigid Cable
|
|
Center Conductor:
|
Silver Plated Copper
|
|
Conductor Type:
|
Solid
|
|
Dielectric:
|
Solid PTFE
|
|
Outer Conductor:
|
Tinned Copper Tube
|
|
Impedance:
|
50 Ohm
|
|
Capacitance:
|
95.2 PF/m
|
|
Outer Diameter:
|
0.250'' (6.350mm)
|
SR-250C-TP delivers production-proven 0.250" (6.35mm) 50-ohm semi-rigid coaxial cable with non-magnetic materials and tinned copper outer conductor, optimized as a cost-effective workhorse for high-power RF infrastructure in magnetically sensitive environments where field reliability and manufacturing scalability matter more than absolute minimum loss. Unlike the silver-plated SR-250C-SP variant designed for ultimate performance in ultra-long trunks, SR-250C-TP prioritizes excellent solderability, proven long-term field stability, and volume manufacturing economics for broadcast stations, radar maintenance depots, industrial RF plants, and MRI service contracts spanning multiple installations. With tinned copper shield providing solid RF performance to 19 GHz, 728.6W CW power handling at 1 GHz, PTFE dielectric stability across -55°C to +100°C, ±0.5Ω impedance control, and 16.8kV RMS voltage rating, it serves as the practical choice for deployable infrastructure that balances performance, serviceability, and total ownership cost.
Non-magnetic tinned copper shield – Field-proven reliability for serviceable installations
0.250" production geometry – 728.6W CW @ 1 GHz, 0.125'' minimum bend radius
Practical low attenuation – 0.174 dB/ft @ 5 GHz, 0.27 dB/ft @ 10 GHz
50-ohm ±0.5Ω impedance – VSWR <1.25:1 DC-6.5 GHz for broadcast/radar service
Superior solderability – Tinned shield enables field repairs and easy connector termination
16.8kV RMS voltage rating – Robust for industrial and transmitter output applications
Serviceable construction – Designed for maintenance technicians and field replacement
Volume manufacturing – Optimized for OEM production runs and service stocking programs
| Item | Material | Diameter (in) | Diameter (mm) |
|---|---|---|---|
| Centre Conductor | Silver Plated Copper | 0.0641 | 1.6281 |
| Dielectric | Solid PTFE | 0.209 | 5.309 |
| Outer Conductor | Tinned Copper Tube | 0.250 +0.002/- 0.001 | 6.350 +0.051/- 0.025 |
| Capacitance (pF/m) | 95.2 |
|---|---|
| Impedance (Ohms) | 50 +/- 0.5 |
| Velocity of Propagation (%) | 70.0 |
| Max. Frequency (GHz) | 19 |
| Max. Voltage @60Hz (V RMS) | 16800 |
| Min. Bend Radius (mm) | 3.175 |
|---|---|
| Weight (kg/100m) | 15.58 |
| Temperature Range (℃) | -55~+100 |
|---|---|
| RoHS | Compliant |
| Frequency (GHz) | Attenuation (dB/m) | Power (Watts cW@20℃) |
|---|---|---|
| 0.50 | 0.14 | 1061.4 |
| 1.00 | 0.21 | 728.6 |
| 5.00 | 0.57 | 290.1 |
| 10.00 | 0.89 | 189.5 |
| 18.00 | 1.31 | 129.7 |
| 26.5 | ---- | ---- |
| 40.00 | ---- | ---- |
| 50.00 | ---- | ---- |
| 65.00 | ---- | ---- |
| 90.00 | ---- | ---- |
MRI service & maintenance – Replacement trunk cables for field service contracts
Broadcast transmitter farms – Workhorse feeders for multiple-station deployments
Radar depot-level repair – Serviceable high-power cables in maintenance facilities
Industrial RF factories – Plasma processing, materials treatment plant infrastructure
Mobile command centers – Deployable high-power RF backbones with field repairability
University research labs – Durable RF trunks for teaching facilities and shared equipment
Regional test laboratories – Practical high-power reference lines for service contracts
Q: How does SR-250C-TP semi-rigid cable differ from SR-250C-SP for field operations?
A: Tinned copper shield provides superior solderability for field repairs vs silver-plated, with slightly higher loss but lower cost and proven 10+ year field reliability in broadcast/radar service environments.
Q: When should procurement choose TP over SP version?
A: SR-250C-TP semi-rigid cable for serviceable installations, field maintenance programs, or cost-sensitive infrastructure where 5-10% higher loss is acceptable for easier repairs and lower upfront cost.
Q: What makes tinned copper better for field serviceability?
A: Excellent solder wetting, corrosion resistance in humid environments, technician familiarity, and widely available soldering equipment. Field techs can re-terminate damaged ends without specialized cleanroom processes.
Q: Can SR-250C-TP semi-rigid cable handle field forming during installation?
A: Limited field forming recommended. 0.125'' minimum bend radius requires proper tooling. Factory pre-forming strongly preferred for infrastructure consistency, with field adjustments only for final positioning.
Q: What volume pricing and stocking programs are available?
A: Tiered volume discounts start at 50 assemblies. Stocking programs for service spares with 24-48 hour emergency delivery. Annual supply contracts lock in pricing for multi-site deployments.
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