Legacy Glass to Metal Seals and hermetically sealed packages
Power Packages
TO-254
LTI/KC Part Number Print Glass /
Ceramic
Post Mat'l.
Thk., Wd. & Lgth.
Lead Lgth.
Lead Dia.
 No. of Leads
Heat Sink - Mat'l.
Shape / Type
Thk., Wd. & Lgth.
Frame - Mat'l
Shape / Type
Thk., Wd. & Lgth.
TB-254-2503A RoHS   Glass Cu. Core 52 Alloy
.024 x .035 x .075
.750 Min.
.040 Dia.
3 Plcs.
OFHC
Tab W/ .144 Dia. Hole
.045 x .540 x .795
CRS
Standard
.205 x .540 x .540
TC-254-2503A RoHS   Ceramic Cu. Core 52 Alloy
.024 x .035 x .075
.750 Min.
.040 Dia.
3 Plcs.
OFHC
Tab W/ .144 Dia. Hole
.045 x .540 x .795
CRS
Standard
.205 x .540 x .540
Power Packages
TO-257
LTI/KC Part Number Print Glass /
Ceramic
Post Mat'l.
Thk., Wd. & Lgth.
Lead Lgth.
Lead Dia.
 No. of Leads
Heat Sink - Mat'l.
Shape / Type
Thk., Wd. & Lgth.
Frame - Mat'l
Shape / Type
Thk., Wd. & Lgth.
TB-257-1903A RoHS   Glass Cu. Core 52 Alloy
.014 x .040 x .105
.800 Min.
.030 Dia.
3 Plcs.
OFHC
Tab W/ .145 Dia. Hole
.040 x .417 x .650
CRS
Extruded Hole
.150 x .417 x .417
TC-257-1903A RoHS   Ceramic Cu. Core 52 Alloy
.014 x .040 x .105
.800 Min.
.030 Dia.
3 Plcs.
OFHC
Tab W/ .145 Dia. Hole
.040 x .417 x .650
CRS
Standard
.150 x .417 x .417
TB-257-1186-018A G23   Glass Cu. Core 52 Alloy
.010 x .018 x .040
.400 Min.
.018 Dia.
6 Plcs.
OFHC
No Tab
.020 x .417 x .417
CRS
Standard
 .098 x .417 x .417
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