B10 pages

B1

ULTRA SMALL SUBMINIATURE BASICS

BASIC
SWITCHES

SINGLE BREAK, COMMERICAL & MILITARY GRADES

BASICS

The B1 series basic switches are ultra-subminiature in
size, designed to reliably switch low level logic signals as
well as up to 2 amps switching capacity for a minimum of
25,000 cycles. Mechanical life expectancy is in excess of
one million cycles.
The molded housing is rugged and structurally stable.
The terminals are molded-in and sealed against solder flux
entering the switch. The terminals are available in a choice
of double turret solder style and 0.020” x 0.025” PC pins.
The B1 series is also available with integral lever actuators
as B1-5 series.

Features:
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Ultra-compact: only 0.300” w x 0.255” h x 0.100” thick
1 million cycle life, B1-5 Series
Low level or logic level switching capability
Designed to meet requirements of MIL-PRF-8805/94
Available in Commercial & Military grades
Choice of solder or PC molded-in terminals
Precision operating points
RoHS/WEEE/Reach compliant

Actual Size

Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Loadt

Sea Level @ 28VDC or 115VAC, 60Hz

50,000 feet @ 28VDC

Resistivet2At

2A

Inductive*t0.5At

0.2A

DWVt1050Vrmst

400Vrms

Low Levelt

30mV and 10mA max

30mV max and 10mA maxt

*L/R = 0.026
Electrical Life:tt 25,000 cycles
Mechanical Life:tt B1 Series is 100,000 cycles (B1-5 Series is 1,000,000 cycles)
Seal:ttUnsealed
Operating Temp Range:tt -55°C to +125°C
Operating Force:tt 6 oz max
Release Force:tt 0.7 oz min
Operate Point:tt 0.220 +/- 0.015 inches from mounting holes
Overtravel:tt 0.003 inches min
Movement Differential:tt 0.002 inches nominal, 0.005 inches max
Pretravel:tt 0.015 inches max

MATERIALS:
Double Turret Terminals
Style Code 2

PC Pins Terminals
Style Code 3

Case:tt Thermoset, blue
Cover:tt Thermoplastic, blue

ORDERING INFORMATION:
B1 Basic
Select the OTTO B1 basic switch to match your specific circuit and
mechanical requirements. To order, specify your requirement using
the OTTO Part Number Code shown below.
Example: B1-12111 specifies Military grade construction, double
turret terminals, 6 oz max operating force and silver/gold high
current contacts.

Button:tt Thermoplastic, black
Terminals:tt Brass, gold over nickel
Contacts:tt Stationary: Silver with gold
ttt Moveable: Silver with gold
Terminal Hardware:tt None provided
Mounting Hardware:tt None provided

B1

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B1 PART NUMBER CODE
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Construction
Grade

Terminal
Style*

Operating
Force

Movement
Differential

Contact
Material

1. Military
2. Commercial

2. Double Turret
3. PC Pins

1. 6 oz max

1. 0.005” max

1. Silver/Gold – High Current
3. Silver/Gold – Low Current

* Wire leads available, contact factory.

Specifications Subject To Change Without Noticet

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