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Made in U.S.A.
 
 

Toroid Mounts Horizontal Toroid Mounting Platforms Horizontal Toroid Mounting Insulators Self-Lead Toroid Carriers
       
Horizontal Toroid Mounts Toroid Caps Tombstone Vertical Toroid Mounts Common Mode Toroid Mounts
       
 
Common Mode Toroid Choke Spacers Vertical Core-Bobbin Transformer Platforms Surface Mount Cups Toroid Carriers

Introduction
Coil Mounting Products are injection molded using high temperature Liquid Crystal Polymer (Vectra®). They are designed to provide an economical, fast and easy means of mounting coils, inductors, and transformers to printed circuit boards and chassis.


Toroid Mounts
Robison Electronics Toroid Mounts (VTM) are designed to provide an economical, fast and easy method of attaching toroids to printed circuit boards. There are 18 standard sizes available, but specials can be easily manufactured to meet your specific needs. Each VTM features cored holes and standoff feet.

The cored holes allow toroid windings to pass through, permitting the wire to be used as external leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware. Additional pins can be inserted into unused hole locations to provide extra hold down strength.

When leads will not provide sufficient hold-down strength, Robison Electronics Toroid Caps may be required. Toroid Caps are placed on top of the toroid and a nylon flathead screw is inserted through the cap, toroid and mount and secured with a nylon nut to hold the assembly together. (Nylon Screws and Nuts are available from Robison Electronics Assembly Hardware).

Standoff feet on the bottom surface of the VTM allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


Horizontal Toroid Mounting Platforms
Robison Electronics Horizontal Toroid Mounting Platforms (HTMP) are designed to provide an economical, fast and easy method of attaching toroids to printed circuit boards. There are 23 standard sizes available, but specials can be manufactured to meet your specific needs. Each HTMP features cored holes and standoff feet.

Cored holes on standard pin circles allow flexibility for mounting designs. Additional pins can be inserted into unused holes to provide extra hold down strength.

When leads will not provide sufficient hold-down strength, Robison Electronics Toroid Caps may be required. Toroid Caps are placed on top of the toroid and a nylon flathead screw is inserted through the cap, toroid and mount and secured with a nylon nut to hold the assembly together. (Nylon Screws and Nuts are available from Robison Electronics Assembly Hardware).

Standoff feet on the bottom surface of the HTMP allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


Horizontal Toroid Mounting Insulators
Robison Electronics Horizontal Toroid Mounting Insulators (HTMI) are designed to provide an economical, fast and easy method of insulating toroids from printed circuit boards when mounted directly to the board. There are 24 standard sizes available, but specials can be manufactured to meet your specific needs. Most HTMI's feature standoff feet and a flashed over center hole to accept a mounting screw if required.

When leads will not provide sufficient hold-down strength, Robison Electronics Toroid Caps may be required. Toroid Caps are placed on top of the toroid and a nylon flathead screw is inserted through the cap, toroid and mount and secured with a nylon nut to hold the assembly together. (Nylon Screws and Nuts are available from Robison Electronics Assembly Hardware).

Standoff feet on the bottom surface of the HTMI allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


Self-Leaded Toroid Carriers
Robison Electronics Self-Leaded Toroid Carriers (SLTC) are designed to provide an economical, fast and easy method of locating toroids vertically on printed circuit boards. Each SLTC is a type of encapsulation shell which features cored holes and 4 standoff feet to allow for mounting toroids on the PCB. The SLTC allows the use of a minimum amount of epoxy to firmly hold toroids vertically in the carriers themselves.

Self-Leaded Toroid Carriers are available in 81 standard sizes, offering a wide variety to meet most requirements. Specials can be manufactured to meet your specific requirements.

Cored holes molded into the base of the SLTC permits the toroid winding wires or pins to be used as external leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware. Additional pins can be inserted into unused holes to provide extra hold down strength.

The standoff feet on the bottom surface of the SLTC allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


Horizontal Toroid Mounts
Robison Electronics Horizontal Toroid Mounts (HTM) are designed to provide an economical, fast and easy method of attaching toroids horizontally to printed circuit boards. There are 28 standard sizes available, but specials can be easily manufactured to meet your specific needs. Each HTM features cored holes and standoff feet.

The cored holes allow toroid windings to pass through, permitting the wire to be used as external leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware. Additional pins can be inserted into unused hole locations to provide extra hold down strength.

When leads will not provide sufficient hold-down strength, Robison Electronics Toroid Caps may be required. Toroid Caps are placed on top of the toroid and a nylon flathead screw is inserted through the cap, toroid and mount and secured with a nylon nut to hold the assembly together. Sizes that measure 1 inch or more in diameter feature a recessed hex counter bore that accepts brass hex head insert with 8-32 threads to secure the assembly from beneath. (Nylon Screws, Nylon Nuts, and Hex Head Inserts are available from Robison Electronics Assembly Hardware).

Standoff feet on the bottom surface of the HTM allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


Toroid Caps
Robison Electronics Toroid Caps (VTC) were designed to assist in mounting toroids with several Robison Electronics toroid mounts in those applications where additional hold-down is required because of toroid size and weight. VTC's are available in 11 standard sizes, but specials can be easily manufactured to meet your specific needs.

VTC's can be used to assist in securing toroids in a variety of horizontal mounting application. Placing a VTC on both sides of a toroid and inserting a nylon flathead screw, through the VTC, the toroid, and the printed circuit board, then using a nylon nut to secure them, provides superior insulation and hold-down qualities. They can also be used independently as flat washers to insulate toroids from metal, printed circuit boards, and other materials. (Nylon screws and Nylon Nuts are available from Robison Electronics Assembly Hardware).


Tombstone Vertical Toroid Mounts
Robison Electronics Tombstone Vertical Toroid Mounts (TVTM) are designed to provide an economical, fast and easy method of attaching toroids vertically to printed circuit boards. Each TVTM features standoff ribs on the bottom surface to allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly. TVTM's are available in 13 standard sizes, but specials can be easily manufactured to meet your specific needs. The standard product line is molded in black.

Cored slots allow toroid windings to slide through, permitting the toroid wire to be used as external leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware.


Common Mode Toroid Mounts
Robison Electronics Common Mode Toroid Mounts (CMTM) are designed to provide both separation of windings and ease of mounting of toroids to printed circuit boards or chassis. The CMTM's are available in twenty (20) standard sizes to accommodate most common toroid core sizes. Specials can be easily manufactured to meet your specific needs. Each CMTM features cored holes and standoff feet.

Cored holes allow toroid winding leads up to .048 diameter to pass through allowing them to be used as mounting leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware.

Standoff feet on the bottom surface allow for solder fillet formation and flush cleaning of solder flux residue.


Common Mode Toroid Choke Spacers
Robison Electronics Common Mode Toroidal Choke Spacers (CMTCS) are designed to provide an economical, fast and easy method of separating windings on toroidal common mode chokes. The CMTCS provides physical separation and electrical insulation on toroidal common mode chokes to prevent shorts and arc-overs between the windings. CMTCS's are available in 30 standard sizes to fit a wide variety of toroidal core diameters. Specials can be easily manufactured to fit your specific needs.


Vertical Core-Bobbin Transformer Platforms
Robison Electronics Vertical Core-Bobbin Transformer Platforms (VCBTP) are designed to provide an economical, fast and easy method of mounting transformers of varying sizes to printed circuit boards and chassis. VCBTP's are available in 18 standard sizes. Specials can be easily manufactured to meet your specific needs. Each VCBTP features cored holes and standoff feet.

VCBTP's incorporate two parallel ridges to locate the transformer core on the platform. A series of cored holes is molded into each VCBTP to permit the standardization of printed circuit board hole patterns. These holes also allow transformer wire to pass through permitting the wire to be used as leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware. Additional pins can be inserted into unused hole locations to provide extra hold down strength.

Standoff feet on the bottom surface allow for solder fillet formation and flush cleaning of solder flux residue.


Surface Mount Cups
Robison Electronics Surface Mount Cups (SMC) are designed to provide an economical, fast and easy assembly of pins to printed circuit boards, components, or modules. Each SMC features cored internal grooves to accommodate the mounting of performed leads. The grooves provide accurate center-to-center lead spacing. The leads can mount onto a pre-assembled printed circuit board installed within the SMC, or leads can be soldered directly to components installed within the SMC.

There are 79 standard sizes available, but specials can be easily manufactured to meet your specific needs. Robison Electronics Gull-Wing Leads or J-Leads were specifically designed to mate with these SMC's and are available from Robison Electronics Assembly Hardware.


Toroid Carriers
Robison Electronics Toroid Carriers (VTC) are designed to provide an economical, fast and easy method of locating toroids vertically on printed circuit boards. Each VTC is a type of encapsulation shell which features cored holes and 4 standoff feet to allow for mounting toroids on the PCB. The VTC allows the use of a minimum amount of epoxy to firmly hold toroids vertically in the carriers themselves.

Toroid Carriers are available in 63 standard sizes, offering a wide variety to meet most requirements. Specials can be manufactured to meet your specific requirements.

Cored holes molded into the base of the VTC permits the toroid winding wires or pins to be used as external leads. Where fine wire cannot be used as leads, a variety of pins are available from Robison Electronics Assembly Hardware. Additional pins can be inserted into unused holes to provide extra hold down strength.

The standoff feet on the bottom surface of the SLTC allow for solder fillet formation and flush cleaning of solder flux residues from underneath the assembly.


LCP (Vectra®) Properties
High temperature material is a liquid crystal polymer (LCP) plastic exhibiting excellent mechanical strength and dimensional stability, high dielectric strength and low coefficient of thermal expansion. Provided in a standard off-white color. It can be used continuously at 280°C (536°F), has a melt point of 335°C (635°F), is inherently flame retardant and meets the flammability requirements of UL 94V-O.

Mechanical Properties
Compressive Strength. . . . . . . . . . . . . . . . 20,000 psi
Flexural Strength. . . . . . . . . . . . . . . . . . . . 32,000 psi
Flexural Modulus . . . . . . . . . . . . . . . . . . . 2.1 x 106 psi
Izod Impact Strength . . . . . . . . . . . . . . . . 3.9 ft. lb./in.
Shear Strength . . . . . . . . . . . . . . . . . . . . . 17,800 psi
Tensile Strength . . . . . . . . . . . . . . . . . . . . 30,000 psi
Elongation.. . . . . . . . . . . . . . . . . . . . . . . . 1.7%
Heat Distortion. . . . . . . . . . . . . . . . . . . . . 536°F (280°C) @ 264 psi
Coefficient of Linear Thermal Expansion
-50°C to 200°C, Flow direction . . . . . . . . 1 cm/cm°C x10-6
Specific Gravity . . . . . . . . . . . . . . . . . . . . 1.62
Water Absorption, to equilibrium. . . . . . . . 0.04%
Flammability. . . . . . . . . . . . . . . . . . . . . . . UL94 V-0 @ 0.031 thick

Electrical Properties
Arc Resistance . . . . . . . . . . . . . . . . . . . . . 130 sec.
Dielectric Strength Short Term. . . . . . . . . . 1050V/mil (1/6 in.)
Dielectric Constant . . . . . . . . . . . . . . . . . . 3.7 @ 1 MHz
Dissipation Factor. . . . . . . . . . . . . . . . . . . 0.03 @ 1MHz
Volume Resistance . . . . . . . . . . . . . . . . . . 1014 (ohm/cm)

Vectra® is a registered trademark of Hoechst Celanese Corporation.


 
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