BASIC SWITCHES
BASIC
SWITCHES
B3
8 OTTO Full Line Catalog Specifications Subject To Change Without Notice
COMMERCIAL & MILITARY GRADES, SUBMINIATURE DOUBLE BREAK, SNAP-ACTION
MIL-PRF-8805/76 (0.200 inches wide)
OTTO’s B3-22000 series is a sub-subminiature switch that meets
all requirements of MIL-PRF-8805/76. Designed to switch at least
one million mechanical cycles, the B3 surpasses the requirements
of the military in these categories: contact resistance less than
25m, contact pressure, contact bounce and overall cycle life. For
MIL-PRF-8805/76 requirements, B3-22141 has standard silver with
gold flash contacts, SPDT double break two circuit (Form Z), solder
terminals in thermoset case material. Gold plate contacts are
available for non-military applications. UL recognized and CSA
certified models available.
MIL-PRF-8805/101 (0.156 inches wide)
For your really difficult projects, try OTTO’S B3 series. They meet
the OTTO inspired MIL-PRF-8805/101 specification. Only 0.156”
thick, think of all those extra 0.044” you can use in those tight
ganged jobs. With the B3 series, you can get an extra pole in
where only four MIL-PRF-8805/76s fit, with room to spare.
Examine the characteristics. With the MIL-PRF-8805/101, the only
thing you give up is the extra space the MIL-PRF-8805/76 takes.
Cycle life, very low contact resistance, higher than normal
contact pressures, minimal contact bounce...everything is
exactly as provided by the MIL-PRF-8805/76 specification.
For MIL-PRF-8805/101 requirements, B3-11141 (PC pin) and
B3-12141 (turret) have silver with gold flash contacts and SPDT
double break (Form Z) contact. For commercial applications,
a variety of contact forms, special forces and gold plate
contacts are available. Most versions are also UL recognized
and CSA certified.
Great circuit versatility is available with either switch style. You
have your choice of normally open (Form X) or closed (Form Y),
3 terminal (Form C) and 4 terminal (Form Z) SPDT double break.
Features:
Low level switching capability
Less than 25mcontact resistance
Up to 8 amps switching capability
Button accepts actuation directly from a cam
Choice of 0.156" & 0.200" wide models
Choice of six standard terminal styles
Available in Commercial & Military grades
UL recognized & CSA certified
Qualified under MIL-PRF-8805/76 & MIL-PRF-8805/101
®
APPLICATIONS
OTTO sub-subminiature switches are designed to meet all
applications requiring MIL-PRF-8805/76 or MIL-PRF-8805/101
switches. Basic switches are designed for miniature spaces
where cam or other limit actuators are used. In addition, toggle,
pushbutton and lever actuators can be provided.
Right Angle
PC Terminals
PC Pins
Wire Wrap
Terminals
Solder Turret
Terminals
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Circuitry Load Sea Level 70,000 feet Sea Level @
@ 28VDC @ 28VDC 115VAC, 60/400Hz
SPST-NO or NC Resistive 8A 8A 8A
Form Z 5A 5A 5A
Form C 5A 5A 5A
Gold Contacts 5A 5A N/A
SPST-NO or NC Inductive* 5A 3A 5A
Form Z 3A 2A 3A
Form C 2.5A 1.5A 3A
Gold Contacts 3A 2A N/A
Double Break Lamp 1A N/A 1A
2 Circuit N/A N/A 1A
*L/R = 0.026
Lamp 1A N/A 1A
Motor 5A N/A
DWV 1050Vrms 400Vrms
Low Level: Gold contacts 10mA @ 30mV
Electrical Life: 50,000 cycles at full load
Mechanical Life: 1 million cycles
Seal: Unsealed
Operating Temp Range: -65°C to +125°C
Operating Force: 5 oz +3/-2 oz typical to 6 oz max
Release Force: 1.5 oz min
Operate Point: 0.320 +/- 0.015 inches from mounting holes
Overtravel: 0.004 inches min
Movement Differential: 0.018 +/- 0.008 inches
MATERIALS:
Case: Thermoset, blue
Cover: Thermoplastic, blue
Button: Thermoplastic, black
Terminals: Brass, gold over nickel
Contacts: Stationary: Silver with gold flash
Moveable: Silver with gold plate
Terminal Hardware: None provided
Mounting Hardware: None provided
BASIC SWITCHES BASIC
SWITCHES
B3
Specifications Subject To Change Without Notice www.ottoexcellence.com 9
BASICS
COMMERCIAL & MILITARY GRADES, SUBMINIATURE DOUBLE BREAK, SNAP-ACTION
Auxiliary Lever Actuators for B3
Catalog Number
Number of Poles
A1-101-02 1
A3-102 2
Supplied with two 2-56 panhead screws,
hex nuts and lockwashers.
Basic Switch
shown with
Solder Turret
Terminals
Terminal Dim. "A"
Style Length
2 0.125”
30.187”
Printed
Circuit Pin
Terminal
Style 1
Wire Wrap
Terminal
Style 4
Right Angle
Printed Circuit
Terminal
Style 5
Solder
Terminal
Style 6
Available on the
0.200” model only.
CONTACT CONFIGURATIONS:
MlL-PRF-8805/76 and MlL-PRF-8805/101 specify single pole, double throw, double break
(Form Z) contact configuration. Available and included in the military specifications are
SPNO and SPNC double break, (Form X and Y). The MlL-PRF-8805/101 also specifies
SPDT Form C.
MILITARY APPROVALS
(MlL-PRF-8805/76 & MlL-PRF-8805/101)
Certain OTTO B3 models have been qualified to the military specifications for these
parts. The following is a partial listing. Consult the Cross Reference that appears at
the back of this catalog for the latest, complete listings.
MILITARY NO. OTTO P/N MILITARY NO. OTTO P/N
MS27257-1 B3-26141 M8805/101-011 B3-15141
MS27257-2 B3-22141 M8805/101-012 B3-15142
M8805/101-001 B3-10064 M8805/101-013 B3-13141
M8805/101-002 B3-10065 M8805/101-014 B3-13142
M8805/101-003 B3-10066 M8805/101-015 B3-11131
M8805/101-004 B3-10067 M8805/101-016 B3-11132
M8805/101-005 B3-10063 M8805/101-017 B3-12131
M8805/101-006 B3-10072 M8805/101-018 B3-12132
M8805/101-007 B3-11141 M8805/101-019 B3-15131
M8805/101-008 B3-11142 M8805/101-020 B3-15132
M8805/101-009 B3-12141 M8805/101-021 B3-13131
M8805/101-010 B3-12142 M8805/101-022 B3-13132
ORDERING INFORMATION:
B3 Basic
Select the OTTO B3 basic switch to match your specific circuit and
mechanical requirements. To order, specify your requirement using
the OTTO Part Number Code shown below.
Example: B3-12141 is 0.156" wide, has 1/8" long turret terminals, 5 oz
operating force, SPDT double break and gold flash contacts (MIL-
PRF-8805/101).
Model Terminal
Style
Operating
Force
Circuitry Contact
Material
1. 0.156 (MIL Grade)
2. 0.200 (MIL Grade)
3. 0.156 (Com’l Grade)
4. 0.200 (Com’l Grade)
1. PC Pins
2. Turret, 1/8" lg.
3. Turret, 3/16" lg.
4. Wire Wrap
5. Right Angle
PC Pins
6. Solder
1. 5 +3-2 oz
2. 5 oz min
3. 6 oz max
1. SPNO-DB, Form X
2. SPNC-DB, Form Y
3. SPDT, Form C
4. SPDT-DB, Form Z
1. Silver/Gold Flash
2. Silver/Gold Plate
Available on 0.200” wide models only.
B3 PART NUMBER CODE
Bold Code items signify conformance to MIL-S-8805 specifications.
B3 –X X X X X