Abstract:
A surface mount electronic reed switch component (10) is provided having a rod-shaped pad element (40) connected in transverse relationship to the outer end (30) of each switch lead (12, 14) of the reed switch (10) to provide a stable surface mounting foot without bending the leads (12,14) to thus avoid adversely affecting the switch gap (28) defined by the inner ends (22,24) of the leads (12,14). Element (40) may be of round, square, rectangular or tubular cross-section.
Abstract:
An electronic component is provided which comprises a resin package for enclosing inside parts. The package has a heat sensitive surface portion provided with a heat sensitive material which irreversibly discolors at a temperature higher than the soldering temperature for the electronic component. The component may be a solid tantalum capacitor, solid aluminum capacitor, diode or transistor which generates heat under abnormal operating conditions.
Abstract:
An electronic component is provided which comprises a resin package for enclosing inside parts, and at least one lead terminal projecting out from the resin package to have a bonding end. The lead terminal is bent to provide an armpit-like portion between the lead terminal and the resin package for retaining a solder wire in a sandwiched state. At the time of mounting the electronic component to a circuit board, the solder wire be caused to melt at a soldering temperature for merging with solder fillets along the bonding end of the lead terminal.
Abstract:
Disclosed is a method for the mounting, on an flexible substrate, of miniature electronic components of the beam lead type. Said method consists, after a first connection lead of a component has been soldered to the substrate, in arching each of the other connection leads of the component considered during their soldering by pressing the connection lead considered on a metallized zone of the substrate by means of a tip of a soldering tool while, at the same time, making a approaching movement towards the body of the component considered with this tip before carrying out the soldering operation itself. Through this mounting method, the beam lead electronic components are no longer placed flat against the substrate with their connection leads in an extended position but are arched on these leads. This gives them a freedom of play that enables them to absorb mechanical stresses by adopting positions of greater flatness or lesser flatness on the substrate.
Abstract:
A component spacer is disposed in an electrical circuit between a circuit component such as a resistor having two leads and a printed circuit board to which the resistor leads are connected to maintain a gap between them. The component spacer has a generally flat partition with vertically extending projections for contacting the printed circuit board. An elongated slot defined by a bifurcated section and a spaced aperture extend through the partition for receiving the resistor leads.
Abstract:
A component lead tip protruding from a hole of a circuit board is split and displaced in order to attach the component to the circuit board. Trimming of the lead to a preferred length generally simultaneously with the splitting is also possible.
Abstract:
A method for mounting electrical components or wires having connections both on and off circuit boards is provided in which the component is machine inserted and flow soldered along with other parts. Leads to be connected off the board are inserted into dummy holes, i.e., holes having no metallic pads or plating, so that these leads are not bonded to the board during the flow solder process. In the final assembly stage, the unbonded leads are raised from the board and electrically and mechanically connected to a terminal of an off-board component.
Abstract:
A supporting plate having a network of conductors, on which supporting plate a number of circuit components are placed which are interconnected in the network of conductors in an electric circuit. In a place of the circuit which is sensitive to moisture, a board opening is provided in which a member of a minimum moisture-absorbing material is fitted. The connections of the surrounding circuit components extend in an aperture of the member and are electrically interconnected there. The stability of the circuit is considerably improved thereby in particular in the case in which the circuit is an oscillator circuit.
Abstract:
A surface mount component (11) has at least one lead (12) which extends from a body portion (16) of the component (11) along an axis (14) through the component. An outer end portion of the lead (12) is formed into a circuit termination (20) of a shape which, when projected onto a plane perpendicular to the axis, encompasses a projection of the body portion (16) of the component onto the plane.
Abstract:
A thru-hole insertable terminal (10, 50, 60) includes an upper shank portion (12, 52, 66) preferably adapted for soldered securement to an end electrode (24) of a component (20), such as a capacitor. A lower shank portion (14, 54, 68) is dimensioned and adapted for minimal initial contact insertion into, and the temporary securement thereafter within, an oversized thru-hole (26, 58, 62) of a supporting substrate, such as a circuit board (28, 59, 64). At least one upwardly extending free-ended tab (32, 56, 72, 74) is formed in the lower terminal shank portion (14, 54, 68), and is oriented in the major plane thereof until after the insertion thereof within an associated substrate-formed thru-hole (26, 58, 62). Stop means (14b, 14c, 54b, 54c, 68b, 68c) also formed in the lower terminal shank portion is adapted to position the upper free end of the tab at an elevation preferably below the upper open end of a confining thru-hole. The tab (32, 56, 72, 74) is also dimensioned such that, when thusly positioned, the lower integral end thereof extends at least to the lower open end of the thru-hole. This results in the upper free end of the tab being pivoted against the sidewall of the confining thru-hole in response to a then downwardly protruding end region (14d, 54d, 68d) of the lower terminal shank portion being clinched against the underside of the supporting substrate (28, 59, 64). The thusly pivoted tab advantageously not only facilitates the temporary securement of the terminal within the associated thru-hole, but the establishment thereafter of a reliable, permanent soldered connection therebetween.