摘要:
A method and system provide a magnetic recording transducer having air-bearing surface (ABS). The magnetic recording transducer includes a pole, a side shield, a nonmagnetic gap between the side shield and the pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS. The side shield includes at least one nonconformal portion that extends from a throat height in a stripe height direction perpendicular to the ABS and is nonconformal with the pole. The spacing between the nonconformal portion(s) of the side shield and the pole varies based on a distance from the ABS.
摘要:
A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.
摘要:
Systems and methods for providing stacked writer leads for magnetic transducers used in disk drives are provided. One such system for providing stacked writer leads for a magnetic transducer includes a writer coil for the magnetic transducer, a first pad on the magnetic transducer, a second pad on the magnetic transducer, a first circuit trace coupled to the first pad and a first terminal of the writer coil, and a second circuit trace coupled to the second pad and a second terminal of the writer coil, where a preselected length of the first circuit trace and the second circuit trace is configured in a stacked configuration where each of the preselected lengths of the first circuit trace and the second circuit trace is positioned at about the same location in spaced apart planes.
摘要:
An evaporative condenser radiating module for steam exhaust of a steam turbine comprises tube bundles and steam-water separating chambers. A steam-water separating chamber (4) between a section A and a section B, a section A downflow cooling section tube bundle (3), a section B downflow cooling section tube bundle (5), and a section C counter flow cooling section tube bundle (8) are disposes at the left side of a central steam-water separating chamber (7). An upper sealed space (10) of the steam-water separating chamber (4) between the section A and the section B is in communication with the central steam-water separating chamber (7) through the section C counter flow cooling section tube bundle (8). A lower sealed space of the steam-water separating chamber (4) between the section A and the section B is in communication with the central steam-water separating chamber (7) through the section B downflow cooling section tube bundle (5). A sealed section A steam entering chamber (2) is arranged on the left side of the steam-water separating chamber (4) between the section A and the section B. The section A downflow cooling section tube bundle (3) is arranged between the section A steam entering chamber (2) and the lower sealed space of the steam-water separating chamber (4) between the section A and the section B. The right side of the central steam-water separating chamber (7) is provided with tube bundles and steam-water separating chambers totally structurally identical with those arranged on the left side of the central steam-water separating chamber (7).
摘要:
A method and system for providing a magnetic recording head is described. The magnetic recording head has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The head includes a first coil, a second coil, a main pole, and a third coil. The first coil has a first plurality of turns and is configured to carry a first write current in a first direction. The second coil has a second plurality of turns and is configured to carry a second write current in a second direction. The main pole is between the first coil and the second coil. The third coil has a third plurality of turns configured to carry a third write current in a third direction.
摘要:
A method of assembling a semiconductor device includes providing a lead frame having a die pad and a fame member with lead fingers that surround the die pad. The lead fingers have distal ends connected to the frame member and proximal ends near the die pad. A die is attached to the die pad and die connection pads are electrically connected to the proximal ends of the lead fingers with bond wires. The die, bond wires, and part of the lead fingers are encapsulated with an encapsulant. The encapsulating process includes separating the lead fingers into first and second sets of lead fingers. The proximal ends of the first set lie in a first plane and the proximal ends of the second set lie in a second plane that is spaced and maintained from the first plane solely by the encapsulation material.
摘要:
A method of assembling an integrated circuit (IC) device includes the steps of providing a lead frame or substrate panel, attaching a semiconductor die to the lead frame or substrate panel and electrically coupling the die to the lead frame or substrate panel. The method further includes encapsulating the die with a first encapsulant, and the encapsulating the first encapsulant with a second encapsulant where the second encapsulant includes a material that provides electromagnetic shielding.
摘要:
A lead frame has a flag, a peripheral frame, and main tie bars coupling the flag to the peripheral frame. At least one cross tie bar extends between two of the main tie bars and an inner row of external connector pads extending from an inner side of the cross tie bar and an outer row of external connector pads extending from an outer side of the cross tie bar. Both an inner non-electrically conductive support bar and an outer non-electrically conductive support bar are attached across the two of the main tie bars. The inner non-electrically conductive support bar is attached to upper surfaces of the two of the main tie bars and to upper surfaces of the inner row of the external connector pads.
摘要:
A method and system for providing a magnetic recording head is described. The magnetic recording head has an ABS configured to reside in proximity to a media during use. The magnetic recording head includes a main pole, first and second auxiliary poles, a backgap, a nonmagnetic spacer, and at least one coil. The main pole includes a pole tip occupying a portion of the ABS and a back edge distal from the ABS. Each auxiliary pole has a front recessed from the ABS and a back portion. A portion of the main pole distal from the ABS resides between the auxiliary poles. The auxiliary poles are magnetically coupled with the main pole. The backgap magnetically couples the back portions of the auxiliary poles. The nonmagnetic spacer adjoins the back edge of the main pole and is between the auxiliary poles. The coil(s) energize the main pole.
摘要:
A method of packaging a power semiconductor die includes providing a first lead frame of a dual gauge lead frame. The first lead frame includes a thick die pad. A tape is attached to a first side of the thick die pad and the power die is attached to a second side of the thick die pad. A second lead frame of the dual gauge lead frame is provided. The second lead frame has thin lead fingers. One end of the lead fingers is attached to an active surface of the power die such that the lead fingers are electrically connected to bonding pads of the power die. A molding compound is then dispensed onto a top surface of the dual gauge lead frame such that the molding compound covers the power die and the lead fingers.