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We are looking into a flexible thermal straps between an aluminum plate (EN AW-6082 T6) and a TEC (thermo electric cooler).
Could you send us a recommendation with quote for a thermal strap that meets the following requirements?
Vacuum environment
TEC temperature range: −20 °C to +50 °C, with ramps up to 20 K/min
span plate to TEC: ~100mm
conductance > 1 W/K at 300K (we are interested in the range 250K to 350K)
low mass and stiffness
lead time ~ 1 month
fits on aluminum plate (170mm x 3mm)
RFQ for SpaceWire Cable
| PROJECT INFORMATION | |||
| Project / Mission Name | E.g., Earth Observation Constellation, Deep Space Probe | ||
| Target Orbit / Spacecraft Environment | Laboratory use | LEO Internal, LEO External, GEO, Lunar / Deep Space | |
| Subsystem Interconnect Application | InstrumentEGSE Harness | Payload Imager to Mass Memory, Core Bus OBC to Transceiver, Sensor to Processing Node | |
| SUPPLY CHAIN & LOGISTICS | |||
| Quantity Required (Flight Models) | 0 | Number of flight harness assemblies (including flight spares) | |
| Quantity Required (EM / EGSE Models) | 7 | Number of Engineering / FlatSat / EGSE test cables | |
| Target Lead Time (ARO) | 15 weeks | [Weeks / Months] Time from Order to Delivery (typically 8-16 weeks) | |
| Export Control Classification | None | ITAR, EAR (Specify ECCN), Other, None | |
| Technology Readiness Level (TRL) | TRL 6 (Relevant Env) | TRL 9 (Flight Proven), TRL 8, TRL 7, TRL 6 | |
| ECSS Standards Compliance | Full ECSS-E-ST-50-52C + ECSS-Q-ST-70-08C + ECSS-E-ST-50-12C Rev.1 | Full ECSS-E-ST-50-52C + ECSS-Q-ST-70-08C, Tailored ECSS, Commercial High-Rel | |
| CABLE CONSTRUCTION & PHYSICAL SPECS | |||
| Cable Construction Standard | ECSS Type A (Standard 4-Pair Shielded) | ECSS Type A (Standard 4-pair shielded), ECSS Type B, Low-Mass / SpaceWire-Light | |
| Conductor Wire Gauge (AWG) | AWG 26 (Long Distance >5m) | AWG 28 (Standard flight), AWG 26 (Long runs), AWG 30 (Ultra-low mass) | |
| Conductor Material | Silver-Plated Copper Alloy (SPCA) | Silver-Plated High-Strength Copper Alloy (SPCA), Nickel-Plated Copper | |
| Dielectric & Primary Insulation | Expanded PTFE (Low Dielectric Const) | Expanded PTFE (Low dielectric constant), Kapton / Polyimide, PFA | |
| Shielding Architecture | Double Shielded (4 Inner Pair Foils + Outer Braid) | Double Shielded (4 inner individual pair shields + overall outer braid), Single Outer Braid | |
| Outer Cable Jacket Material | Extruded PFA | Extruded PFA, Cross-linked ETFE (Tefzel), Woven Nomex Yarn | |
| Assembly Total Length (Pin-to-Pin) | 10 m | [Meters / mm] End-to-end tip length (e.g., 1.5 m, 3.2 m; standard max is 10 m) | |
| Maximum Linear Mass | N/A | [g/m] Mass per unit length of raw cable (e.g., ≤ 45 g/m) | |
| Minimum Bend Radius (Static / Dynamic) | N/A | [mm] Static routing bend limit vs. hinge/deployable dynamic limit | |
| CONNECTORS, BACKSHELLS & TERMINATION | |||
| Near-End Connector Type (J1) | Micro-D 9-pin Male (Plug) per ESCC 3401/029 | Micro-D 9-pin Male (Plug) per ESCC 3401/029, Micro-D 9-pin Female (Receptacle), PCB Header | |
| Far-End Connector Type (J2) | Micro-D 9-pin Female per ESCC 3401/029 | Micro-D 9-pin Male (Plug) per ESCC 3401/029, Micro-D 9-pin Female (Receptacle), Flying Leads | |
| SpaceWire Pinout Assignment | Through wiring 1:1 (Pint 1 to Pin 1) | Standard ECSS-E-ST-50-52C (Pin 1 Din+, Pin 2 Sin+, etc.), Custom Pinout | |
| Backshell & EMC Shield Termination | Full 360-deg Band-It / Braid Trap EMC Backshell | Full 360° Band-It Tie / Braid Trap Backshell, Solder Sleeve, Standard Heat-Shrink Boot | |
| Hardware Locking Mechanism | Hex Jackposts (#2-56 UNC) | Hex Jackposts (#2-56 or M2), Spring Latches, Low-Profile Screws | |
| ELECTRICAL & TRANSMISSION PERFORMANCE | |||
| Differential Characteristic Impedance | 100 ± 6 Ω | [Ohms (Ω)] Strict requirement: 100 ± 6 Ω (or 100 ± 10 Ω over temp) | |
| Maximum Targeted Data Signaling Rate | 100 Mbps (Conservative) | 200 Mbps (Standard SpaceWire), 400 Mbps (High-Speed), 100 Mbps, 50 Mbps | |
| Intra-Pair Differential Skew | < 100 ps/m raw wire | [ps/m] Propagation delay mismatch within pair (e.g., ≤ 100 ps/m) | |
| Pair-to-Pair Differential Skew | < 100 ps/m raw wire | [ps/m] Delay difference between Data and Strobe pairs (e.g., ≤ 500 ps/m) | |
| Insertion Loss / Attenuation | < 0.37 dB/m @ 100 MHz (AWG 26) | [dB/m @ 200 MHz] Max high-frequency signal attenuation over length | |
| Near-End Crosstalk (NEXT) | PSNEXT ≥ 73 dB @ 100 MHz | [dB] Crosstalk isolation between Tx and Rx pairs (e.g., ≤ -40 dB) | |
| Screening Effectiveness / Transfer Imp. | N/A | [dB] EMI immunity against internal spacecraft radiated fields (e.g., ≥ 60 dB) | |
| ENVIRONMENTAL & SCREENING | |||
| Operating Temperature Range | +10°C to +40°C | [°C] Allowable flight harness temperature (e.g., -55°C to +125°C or -100°C to +150°C) | |
| Outgassing Limits (CVCM / TML) | Standard Commercial | CVCM < 0.1% & TML < 1.0% (Standard), Ultra-Clean (CVCM < 0.05%) | |
| Radiation / TID Resistance | None | [Mrad] Total radiation dose survival for polymer insulation (e.g., > 10 Mrad) | |
| Routing Location & External Protection | Ground use | Internal Bus (Standard), External MLI Bundle, External AO/Atomic Oxygen Exposed | |
| SPACECRAFT GROUND STATION PROCUREMENT SPECIFICATION | |||
| Technical Parameter | Unit / Format | Buyer Specification (Input Fields) | Technical Guidance & Reference Standards |
| DEPLOYMENT & SITE PROFILE | |||
| Intended Site Location | Text | TBD (Polar) | City, Region, or Country of installation |
| Site Latitude/Longitude | Degrees | > 65° N | Exact or approximate coordinates for link budgeting |
| Site Elevation | Meters (AMSL) | Height above mean sea level | |
| Environmental Conditions | Text | e.g., Min/Max Temp, Max Wind Speed, Salt Fog | |
| Radome Required | Dropdown | Yes | Select Yes/No (recommended for extreme environments) |
| ANTENNA & PEDESTAL SPECIFICATIONS | |||
| Antenna Reflector Diameter | Meters | 5.5 | e.g., 3.0m, 5.4m, 7.3m, 9.0m |
| Frequency Bands Supported | Dropdown | S/X-Band | e.g., S-Band, X-Band, S/X-Band, Ka-Band |
| Tracking Mount Type | Dropdown | Elevation over Azimuth (EL/AZ) | e.g., X-Y, Elevation over Azimuth (EL/AZ), 3-Axis |
| Tracking Accuracy / Pointing | Degrees (RMS) | 0.1 | Maximum acceptable tracking error (e.g., 0.1 deg) |
| Maximum Slew Rate | Degrees/Sec | 5deg/sec | Required for tracking fast LEO passes (e.g., >5 deg/sec) |
| UPLINK (TRANSMIT) SPECIFICATIONS | |||
| Tx Frequency Range | MHz | 2025-2110 | Tunable frequency range for the uplink (e.g., 2025-2110 MHz) |
| Transmitter Power (HPA) | Watts | Output power of the Solid State Power Amplifier (SSPA) | |
| Minimum Required EIRP | dBW | 50 | Effective Isotropic Radiated Power needed to close link |
| Polarization (Tx) | Dropdown | Selectable | e.g., RHCP, LHCP, Selectable |
| DOWNLINK (RECEIVE) SPECIFICATIONS | |||
| Rx Frequency Range | MHz | 2200-2290 (S-band), 8000-8400 (X-Band) | Tunable frequency range for the downlink (e.g., 2200-2300 MHz) |
| Minimum Required G/T | dB/K | S-Band: 12.8 [dB/°K]; X-Band: 30 [dB/°K] | Antenna Figure of Merit (Gain-to-Noise Temperature) |
| LNA Noise Temperature | Kelvin | Max noise temperature of Low Noise Amplifier | |
| Polarization (Rx) | Dropdown | Selectable | e.g., RHCP, LHCP, Simultaneous Dual Circular |
| Demodulation / Baseband | Text | Kratos qMR/qRX, Kratos qRadio or Newtec mdm9000 | Supported baseband processors or software defined radios |
| INTERFACES & CONTROL | |||
| Monitor & Control (M&C) | Text | e.g., SNMPv3, REST API, Web GUI | |
| Baseband Data Interface | Text | e.g., VITA 49, TCP/IP, CCSDS Space Link Extension (SLE) | |
| Timing & Synchronization | Text | e.g., NTP, GPS disciplined oscillator (10 MHz / 1 PPS) | |
| PROJECT, DELIVERY & SUPPORT | |||
| Target Installation Date | YYYY-MM-DD | Q2 2028 | Expected site readiness and installation completion |
| Warranty Period | Years | Desired hardware and software warranty duration | |
| Maintenance SLA | Dropdown | e.g., 24/7 Support, Next Business Day, Best Effort | |
Mission Specific Information
| # | Parameter | Requirement | Response |
| 1 | Physical Properties | Payload Mass (kg) | Less than 1kg (Maybe around 500g) |
| 2 | Payload Volume (U or m3) | 0.5U or lesser | |
| 3 | General | Payload type e.g. RF, EO (RGB, HS, MS IR) | RF IoT |
| 4 | Desired orbits e.g. SSO, near-equatorial | LEO, near-equatorial | |
| 5 | Desired altitudes e.g. 550 km | 500km to 550km (TBD) | |
| 6 | EPS | Payload continuous power (W) | 3W |
| 7 | Payload peak power (W) | 10W | |
| 8 | Payload duty cycle per orbit (%) | TBD | |
| 9 | Payload voltage supply e.g. 3V3, 5V, 12V | 3V3 to 12V | |
| 10 | RF | High-speed downlink required e.g. > 5 Mbps? | TBD |
| 11 | Daily data budget (Mb or Gb) | TBD | |
| 12 | Encryption required on TTC or payload data e.g. AES-256? | TBD | |
| 13 | Interfaces | Bus to payload interfaces required e.g. CAN, I2C, SPI, UART, RS422, RS485, PPS |
TBD |
| 14 | On-board data storage requirements? | TBD | |
| 15 | ADCS | Payload Pointing Modes when active e.g. Nadir | NADIR |
| 16 | Pointing Accuracy | >5 deg | |
| 17 | Pointing Knowledge | >1 deg | |
| 18 | Slew Rate (°/s) requirements? | TBD | |
| 19 | GPS required for position, velocity knowledge? | Yes | |
| 20 | Propulsion | Propulsion Required? | No |
| 21 | Propulsion type requirement e.g. electric, chemical? | - | |
| 22 | Propulsion system use e.g. orbit maintenance | - | |
| 23 | Propulsion thrust or delta V requirements? | - | |
| 24 | Operations | Operations duration e.g. 6 months, 12 months | Minimum 5 Years |
| 25 | Summary of payload operations or CONOPS? | The CubeSat antenna must be pointing towards the Nadir before flyby towards Malaysia region. The CubeSat will receive all the data from the customer ground station and immediately dump towards main ground station (still in Malaysia).
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| 26 | Other | Any other comments or notes? E.g. ITAR restrictions, ground station requirements. | *Please be noted that all the data are only in assumption, because we are currently in the phase for designing our payload. Yet the given information for you might be change (but no major changes). However, we are still in surveying for suitable 3U CubeSat vendor.
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| 27 | Other | Anything else? E.g. budgetary or lead time requirements. | Need to know detail pricing with description, lead time and customer support.
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