Specifications

Superinsulation

Specifications

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

Specifications

Shell: Mild steel

Contacts: High nickel iron alloy

Finish: Fused tin over cadmium

4-lead resistance sample holder

Specifications

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)

19-pin vacuum feedthrough

Specifications

Dimension: 6.248 mm ±0.076 mm (0.246 in ±0.003 in)

recommended to fit hole of 6.35 mm (0.25 in)

Insulation between leads and case; Magnesium oxide**

Leads: Nickel, 0.635 mm (0.025 in) diameter × 50.8 mm (2 in) long

Part number	Length	V	Ω	W
HTR-25	25.4 mm (1 in)	25	25	25
HTR-50	25.4 mm (1 in)	50	50	50
HTR-25-100	25.4 mm (1 in)	50	25	100

*Nickel lead wires and internal construction may cause slight magnetic disturbance

**Dielectric strength of insulation is reduced when hot, forming leakage current

Electric tape for use at cryogenic temperatures

Specifications at 25 °C

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

Specifications

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)

User Login