Keystone Electronics Catalog K75 2025

TRANSISTOR MOUNTS

TRANSISTOR MOUNTING KITS • Each kit provides everything needed to mount, isolate and connect to power transistors • Transistor not included • See diagrams below for complete list of items included

Molded Transistor Mounts provide all of the necessary bushings and insulators to quicky mount power transistors.

4-40 SCREW (1)

TO-220 TRANSISTOR NOT SUPPLIED (1)

For TO-3 CASES

MICA INSULATOR (1)

1.562 [39.7]

CHASSIS (1)

.140 [3.6] DIA.

.425 [10.8]

LOCK WASHER (1) SHOULDER WASHER (1)

MATERIAL: Nylon 6/6 – 94V-2

.050 [1.27] DIA.

4-40 NUT (1)

CAT. NO. 4724 – TO-220 Complete Mtg Kit

CAT. NO. 4616

For TO-66 CASES

TO-3 OR TO-66 TRANSISTOR NOT SUPPLIED 6-20 SCREW (2) MICA INSULATOR CHASSIS SHOULDER WASHER (2)

1.272 [32.3]

.140 [3.6] DIA.

.312 [7.9]

FLAT WASHER (2) SOLDER TERMINAL

.050 [1.27] DIA.

CAT. NO. 4617 MATERIAL: Nylon 6/6 – 94V-2

LOCK WASHER (2) 6-32 NUT (2)

TRANSISTOR INSULATORS

CAT. NO. 4725 – TO-3 Complete Mtg Kit

Mica Insulators provide good thermal conductivity and superior electrical insulation.

SPECIFICATIONS: Material: .003 (.08) Natural MIca Thermal Conductivity: .71 W/(m K) Dielectric Constant : 7 @ 1000 Khz

THREADED STUD TRANSISTOR NOT SUPPLIED (1) MICA INSULATOR (1) CHASSIS (1) SHOULDER WASHER (1)

FOR TO-3 CASES

FOR TO-3 CASES

.142 [3.6] DIA.

SOLDER TERMINAL (1)

.055 [1.40] DIA.

"M" DIA. (2) PLS .125 [3.2] DIA.

LOCK WASHER (1)

1.141 [29.0]

1.062 [27.0]

4-40 NUT (1)

CAT. NO. 4729 – DO-4, TO-60, TO-62 Complete Mtg Kit CAT. NO. 4730 – DO-5, TO-48, TO-61 Complete Mtg Kit

.059 [1.50] DIA.

1.562 [39.7]

1.594 [405]

CAT. NO. 4662

CAT. NO. 4661

FOR THREADED STUD TRANSISTORS

6-20 SCREW (2)

FOR TO-3 CASES

"M" DIA.(2) PLS

TO-3 TRANSISTOR NOT SUPPLIED (1) MICA INSULATOR (1) CHASSIS (1)

Clearance Hol for Screw

"L" DIA. (2) PLS

H

O.D.

W

4602 TRANSISTOR SOCKET (1)

CAT. NO.

OD Screw

4678 4679 4680 4681 4682

.375 (9.5) .375 (9.5) .500 (12.7) .625 (15.9) .750 (19.0)

4 6 8

CAT. NO. L Dia. 4651 1.093 (27.8) 1.625 (41.3) .166 (4.2) .093 (2.4) 4653 1.063 (27.0) 1.655 (42.1) .166 (4.2) .166 (4.2) 4636 1.063 (27.0) 1.655 (42.1) .166 (4.2) .052 (1.3) H W M Dia.

CAT. NO. 4732 – TO-3 Complete Mtg Kit

10

1/4

6-20 SCREW (2)

FOR TO-66 CASES

FOR TO-220 CASE (3-PIN)

TO-3 TRANSISTOR NOT SUPPLIED MICA INSULATOR

"L" DIA. HOLES

.860 [21.8]

.156 [4.2] DIA.

CHASSIS

H

.520 [13.2]

.065 [1.7] DIA. HOLE TYP.

W

'M' DIA.

4606 TRANSISTOR SOCKET NYLON BUSHING

TRANSISTOR MICA INSULATORS & MOUNTING KITS CAT. NO. M LEADS 4671 .141 (3.6) 2 CAT. NO. H W

4672 4673

.141 (3.6) .115 (2.9)

3 3

4664 4666

.750 (19.1) 1.500 (38.1) .780 (19.9) 1.375 (34.9)

CAT. NO. 4734 – TO-3 Complete Mtg Kit

122

®

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