Specifications

Superinsulation

 
One side aluminum deposition: 0.5 to 0.9 Ω/sq (˜400 Å), standard
Reflectivity: 0.03 emmisivity (hemispherical)
Widths: flat 56 to 62 in, crinkled 54 to 60 in nominal
Film thickness: 24 gauge (6 µm); yields 570 ft2/lb
Core size: 1 in standard
Roll length: 1150 linear ft/roll (10 lb)
  

19-pin vacuum feedthrough

 
Shell: Mild steel
Contacts: High nickel iron alloy
Finish: Fused tin over cadmium
  

4-lead resistance sample holder

Temperature range: 4.2 K to 373 K (-269 °C to 100 °C)
Current: 1 A at 100 VDC
Insertion force: 227 g (8 oz) per pin
Dimensions: 5.1 mm wide × 27.9 mm long (0.2 in wide × 1.1 in long)
Hole diameter: 0.8 mm (0.03125 in)
Hole spacing: 2.5 mm (0.1 in) between holes 1 & 2 and 3 & 4; 15.2 mm (0.6 in) between holes 1 & 4 and 2 & 3
Mating connector: Black thermoplastic
Sockets: Phosphor bronze with gold over nickel
Socket diameter: 0.41 mm to 0.51 mm (0.016 in to 0.020 in square)
Socket depth: 2.03 mm to 6.35 mm (0.080 in to 0.25 in)
  

Cartridge heaters

Case: INCOLOY® alloy 800
Diameter: 6.248 mm ±0.076 mm (0.246 in ±0.003 in)
recommended to fit hole of 6.35 mm (0.25 in)
Length: 25.4 mm (1 in)
Insulation between leads and case: Magnesium oxide**
Leads: Nickel, 0.635 mm (0.025 in) diameter × 50.8 mm (2 in) long
 
Part numberLengthVΩW
HTR-50 25.4 ± 2.4 mm
(1 ± 0.094 in)
505050
HTR-25-10025.4 ± 2.4 mm
(1 ± 0.094 in)
5025100
 
*The nickel lead wires and INCOLOY (iron/nickel/chromium alloy) case make 
  these heaters unsuitable for magnetically sensitive locations
**Dielectric strength of insulation is reduced when hot, forming leakage current
Cartridge heaters

 

  

Electric tape for use at cryogenic temperatures

Backing: Polyester film
Temperature class (upper limit): 403 K (130 °C)
Total thickness: 0.064 mm (0.0025 in)
Dielectric breakdown: 5 kV
Insulation resistance: >1 MΩ
Breaking strength: 55 N (12.5 lb)
Elongation: 100% at break
  

Ferrite bead for high frequency filtering

Material: Fair-Rite® 43
Impedance with wire passed once through bead: 110 W at 25 MHz, 225 W at 100 MHz
Impedance with wire passed twice through bead: 440 W at 25 MHz, 900 W at 100 MHz
Construction: 2 halves of a ferrite bead held by a plastic clamp
Overall dimensions: 22.1 mm × 23.4 mm × 32.3 mm (0.87 in × 0.92 in × 1.27 in)
Cable opening diameter: 10.2 mm (0.4 in)
Temperature range: 288 K to 308 K (15 °C to 35 °C)
Weight: 0.046 kg (0.1 lb)