Comparison ledger
Heller 1088, Varian HS 16 Diffusion, side by side. Every value shown is drawn from the cited encyclopedia entries.
| Attribute | 1088Heller | HS 16 DiffusionVarian |
|---|---|---|
| OEM | Heller | Varian |
| Category | Thermal / Diffusion | Thermal / Diffusion |
| Wafer size | — | — |
| Process node | — | — |
| Introduced | — | — |
| Production run | — | — |
| Lifecycle | — | — |
| Lifecycle milestones | — | — |
| Control system | — | — |
| Generation | — | — |
| Family | Heller 1088 | Varian HS 16 Diffusion |
| Cited variants | — | |
| Specifications | ||
| Heating Zones | 8 zones (4 top and 4 below) plus 1 cooling zone[2] | — |
| Heating Method | Forced convection[2] | — |
| Conveyor Width | 18 inches (45 cm)[2] | — |
| Heated Length | 43.5 inches (111 cm)[2] | — |
| Overall Length | 96 inches (244 cm)[2] | — |
| Height | 50 inches (127 cm)[2] | — |
| Net Weight | 900 lbs (409 kg)[2] | — |
| Thermal Profiler | Included[2] | — |
| Oven Top | Counter balance for easy access to conveyor[2] | — |
| Solder Compatibility | Lead-free and leaded soldering[2] | — |
| Configuration | — | 8100 Watts[3] |
| Voltage | — | 480 V[3] |
| Manufacturer | — | Varian[3] |
| Model | — | HS 16[3] |
| Category | — | Thermal / Diffusion[4] |
| Type | — | Diffusion pump[5] |
| Pumping speed, air | — | 6,000 L/s[5] |
| Pumping speed, helium | — | 7,500 L/s[5] |
| Inlet flange | — | 16" ASA[5] |
| Foreline flange | — | 3" ASA[5] |
| Cooling method | — | Water cooling[5] |
| Electrical power | — | 8.1 kW[1] |
| Input voltage | — | 480 V[3] |
| Electrical requirements | — | 3-phase, 50/60 Hz, 240/415/480 V[6] |
| Operating range | — | 7x10^-4 to <5x10^-8 Torr[1] |
| Weight | — | 500 lbs (227 kg)[1] |
| Jet assembly | — | 5-stage jet assembly[1] |
| Cooling | — | Water-cooled[1] |
| Heater location | — | Mounted at the bottom of the pump body[1] |
| Operating pressure range | — | 7x10−4 Torr to <5x10−8 Torr[1] |
| Maximum pumping speed, air | — | 10,000 l/s[1] |
| Maximum pumping speed, helium | — | 12,500 l/s[1] |
| Cooling water flowrate | — | 1.5 gpm (US) at inlet temperature of 60 to 80 °F[1] |
| Warmup time | — | 30 minutes[1] |
| Cooldown time without Quick Cool | — | 48 minutes[1] |
| Cooldown time with Quick Cool | — | 30 minutes[1] |
| Fluid charge | — | 3 qt (US) / 2.8 liters[1] |
| Recommended backing pump capacity | — | 80 cfm[1] |
| Height, minimum including clearance for heater access | — | 51 in (1295.4 mm)[1] |
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