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B3
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Catalog excerpts

B3 - 1

basic switches basic switches Commercial & Military Grades, sub-subminiature double break, snap-action MIL-PRF-8805/76 (0.200 inches wide) OTTO’s B3-2XXXX 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 25mΩ, contact pressure, contact bounce and overall cycle life. For MIL-PRF-8805/76 requirements, B3-22141 has standard silver with gold 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. 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 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. Low level switching capability Less than 25mΩ contact resistance Up to 8 amps switching capability Button accepts actuation directly from a cam Choice of 0.156” & 0.200” wide models Choice of 6 standard terminal styles or wire leads Available in Commercial & Military grades UL recognized & CSA certified Qualified under MIL-PRF-8805/76 & MIL-PRF-8805/101 RoHS/WEEE/Reach compliant 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 are available. Specifications Subject To Change Without Notice PC Pins Solder Turret Terminals Right Angle PC Terminals Wire Wrap Terminals Standard Characteristics/Ratings: ELECTRICAL RATINGS: Circuitry Gold Contacts Gold Contacts Low Level: Gold contacts 10mA @ 30mV Electrical Life: 50,000 cycles at full load Mechanical Life: 1,000,000 cycles Seal: Unsealed Operating Temp Range: -65°C to +125°C Operating Force: 5 oz +3/-2 oz typical, 6 oz max, or 5 oz min options 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 with gold Contacts: Stationary: Silver with gold plate Moveable: Silver with gold plate Terminal Hardware: None provided Mounting Hardware: None provided

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B3 - 2

basic switches basic switches Commercial & Military Grades, sub-subminiature double break, snap-action CONTACT CONFIGURATIONS: Basic Switch shown with Solder Turret Terminals 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...

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