Rotary Switches
84
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Audio Switches General
Specifications
Mechanical Data
Resolution: ........................................................................24 positions max. (15° indexing)
Switching torque (new condition):........................................Series A: 4.0 Ncm, series N: 1.5 Ncm, series R: 8.0 Ncm (+/- 25%)
Rotational life: ...................................................................25,000 switching cycles min.
Fastening torque of nut: .....................................................300 Ncm max.
Electrical Data
Function: ...........................................................................1 x 24 poles/positions per wafer
(max. 12 wafers; series A/N: 12 channels, series R: 6 channels)
Switching mode: ................................................................Shorting
Load current: .....................................................................2 A max. (resistive load)
Switching voltage: ..............................................................42 VDC max.
Contact resistance (new condition): .....................................100 mOhms max.
Insulation resistance: ..........................................................1012 Ohms min. (contact to contact/housing)
Switching capacitance: .......................................................1 pF max. (contact to contact)
Dielectric withstanding voltage: ...........................................500 VDC during 60 seconds
Material Data
Shaft: ................................................................................Stainless steel
Bushing/housing: ...............................................................Zinc diecast, zinc plated and passivated
Nut: ..................................................................................Brass, zinc plated and passivated
Contact plating: .................................................................AuCo (hard gold); 3 µm
Insulation material: ............................................................PCB: FR4 (glass fiber epoxy), rotor: Polybutylene (PBTB)
Soldering leads: .................................................................Alloy copper, AuCo plated (hard gold)
Environmental Data
Operating temperature range:............................................-40 to +85°C
IP sealing: .........................................................................IP60, optional IP68 (2 bar, 1 hour) shaft/front panel sealing
Vibration: ..........................................................................10 Grms max. @ 10 to 2000 Hz
Flammability:.....................................................................UL94-HB
Packaging Sizes
Tray: .................................................................................10 pcs.
Soldering Conditions
Hand soldering: .................................................................300°C max. during 3 s max.
Wave soldering: .................................................................280°C max. peak temperature during 5 s max.
Can be used in many cases in place of shortened bushes; made of glass-fibre
reinforced plastic to compensate the front panel thickness; available in two
standard lengths.
Length L Packaging Unit Order Number
3.5 mm 10 pcs. 4124-31
3.5 mm 100 pcs. 4124-30
5.5 mm 10 pcs. 4124-36
5.5 mm 100 pcs. 4124-35
Special Wafer Spacing
Our spacers allow the following wafer spacing:
L = 21.3 mm or 25.5 mm
Spacers