Transtronics Part Numbering System
All Transtronics part numbers start with a one to three characters
long prefix to indicate the class of part. The numbers/letters after
the prefix will have different meanings depending on the class of part.
I'm defining the prefixes with the following conventions:
A number/letter enclosed in brackets [I are required variables.
Numbers/letters enclosed in braces {} are optional.
AB
AB- Anti-static Bag AB-[W]X[H3 AB-3X4.5
W width in inches 3 inches
H height in inches 4 1/2
ADH Adhesive
AE
AE- Axial Electrolytics AE-[C]/[VJ{-s) AE-100/25-.25
C capacitance in uF l00uF
V: minimum voltage rating 25 V
S spacing in Inches .25" spacing
BAT-
Battery
Gel = Gell cell
BX
BX- Boxes and enclosures BX-[M]-[P3 BX-Bopla-E450
M = Manufacture name BOPLA
P = Manufactures part number E450
CD
CD- Ceramic Disk cap CD-[CCM](/\fl(T3{%){5} CD-102/200Z5UM.3
C= capacitance in pF 10 - l000pf 1000
M= multiplier 2
V= voltage default is 50 200V
T= DIELECTRICTC (NPO or Z5U)) Z5U
%= TOLERANCE CODE 20%
S= Spacing in inches Default : .2" .3" spacing
CF
CF- Carbon film resistor CF[W]-[O] CF25-3K3
W= Wattage in 100th of watts 250 MW or 1/4W
0= value of ohms 3.3K ohms
CM
CM- Ceramic Monolithic CM-[CCM]C/V){T)(%)(s) CM-1O4Z5UM.1
C= capacitance in pF 10 - 100,000pf 100,000
M= multiplier 4
CON- connectors CCN-[N][T][5]{m} CON-37SDRT-F-IDC
N= Number of pins 37
T= type subD right angle
S= Sex female
M = Misc Insulation displacement
CP
CP- Ceramic Plate Capacitor CP[CCM]{/V}{T}{-s} CP-104Z5M-.2
C = capacitance in pF 10 - 100,000pf
M= multiplier
V= voltage default is 50 200V
T= DIELECTRICTC (NPO or Z5U)) Z5U
%= TOLERANCE CODE
20%
S= Spacing in inches Default : .2" .2" spacing
CT- Capacitor Tantalum Surface mount CT[C/V]{p] CT10/10A
C = CAPACITANCE in uF 10Uf
V = Voltage rating 10 Volts
P = EIA package code EIA A
D
D- diode D-[N} D-1N4148
N= manufactures part number 1N4148
DT- bip Tantalum DT-[C]/[V]{-s} DT-100/25-.25
C= capacitance in uF 100uf
V= minimum voltage rating 25 V
S= spacing in inches .250 spacing
FU
FU- Fuses FU-[A][S][V] FU-6AGC125
A= Amperage 6 amps
S= Style AGC
V= Voltage 125 Volts
H- Headers H-[R][S]{C} H-SIM5MM
R= number and type of rows single row
S= Sex Male
C= Centers if not .10 5mm
HW
HW-
Hardware HW(T){D}{L){M}
HW#4-40x1/2PP HW-M3X14PP
Type= M= metric #=number number Metric
D=diameter
4-40
3mm
L= length
½ 14mm
M=
misc
Pan Philip Pan
phili
L
L- Inductor L-[V]/[A] L-187/4
V= Value in uH 187uh
A= saturation current 4A
LBL
L- label
LCD
LCD
LED
LED- LED-[N][C]{H} LED-T1-3/4REDH
N= industry number T1-3/4
C= color RED
H= horizontal vert is default Horizontal
MF
MF- Metal film Resistor MF[P]-[V] MF25-3K3
P= Power 250 MW or 1/4W
V= value in ohms 3.3K ohms
MO
MO Metal Oxide Resistor M0{C}[P]-[V] MOS100-3K3
C= Case style Small case
P= Power
1000 MW or 1W
V= value in ohms 3.3K ohms
MOV
MOV- Metal oxide varistor MOV-[N] MOV-13OLA2OA
N: Industry number 13OLA2OA
NE
NE- Neon lamps NE-[N] NE-61230
N= industry number
Q Transistor Q-[N] Q-2N2222
N= Industry Number 2N2222
PCB
PCB- printed circuit board PCB-[N)[V} CB-BDR3-1
N= Name of board BDR
V= Version number 3-1
PK
PK- Packaging Material
PF
PF- Poly film capacitor PF-[C]{/VXT}f-s} PF-2/200J-.2
C= capacitance in uF 10-l00,000pf 200p
V= voltage default is 50 200V
T=tolerance
J=5%
5: Spacing in inches Default : .1" .2" spacing
PT
PT- potentiometer PT-{D][O3[S]LV](t) PT-1X4V1-100RT1O
D= Diameter of size in tenths .1X.4"
Q= orientation H=horz or V=vert vertical
S= lead spacing .100
T= Number of turns default= 1 10
PW
PW- Power wire wound resistor PW[W]-[V] PW5-2R
W=
Wattage
5 watts
V= Value
2 ohms
R
R - surface mount resistor R[c]-[w]-[v]{t}{tc} R12-25-2K4-F
c = case
1206
12=1206 08=0805 06=0603 04=0402
W= Wattage
0.25 watts
V= Value
2,400 ohms
T= Tolerance 1%
J=5% G=2% F=1% D=.5% C=.25 B=.1%
tc= temp coefficent in ppm
RE
RE- Radial Electrolytics RE-[CI/[V](-s} RE-100/25-.6
C= capacitance in uF lOOuF
V= minimum voltage rating 25 V
S= spacing in inches .6" SPACING
RL
RL- Relay RL-LN]
N Industry number
RM
RM- Radial Mica capacitor RM-[CCM](/V)(T)~-5} RM-102J-.3
C= capacitance in pF 10 - 1000pf
M= multiplier 2
V= voltage default is 50 50V
T= Tolerance code J
5= Spacing in inches Default = .2" .3" spacing
SIR
SIR-
SIR- Resistor sip SIR{W}[W]}[N][P][V]G{T} SIR100W10P9B4K7G2
W= Milliwatt per element 100mW
N= Number of pins
10 pins
E= Number of resistors
9 resistors
V= Value
4.7K ohms
C= configuration-(B)USSED or (I) Isolated Bussed
T=
Tolerance
G2 is 2%
SOC
SOC- Sockets SOC-[T][N]{M} SOC-DIP40M
T= Type DIP or SIP DIP
N= number of pins 40 pins
M= Contact type Machine contact
STK
STK SticKER STK-[P]-[N]-{V} STK-ATA-PANNEL-1
P= PROJECT NAME ATA
N= STICKER NAME Pannel
V= VERSION 1
SW
SW- Switch SW-[T][A]@[V][P]-[N] SW-SPDTM10@12D34872
T=
TYPE
SPDT Momentary
A= Amperage rating 10A
V= voltage of amp rating 12
P= A for AC D for DC DC
N = Manufactures part # 34872
U- Integrated Circuit U-[N] U-LM374
N= Industry number 374
W
W- wire W-[G][U]-[C][T] W-18UL1015-BLK-B
G= gauge 18
U= UL number UL1015
C= Color Black
T= type S = solid B= bondcoat Bondcoat
XF
XF- Transformer XF-[N] XF-ST-6-16
N = manus number ST-6-16
XT
XT- Crystal XT[N]-[F] XT-1-4M0
N= case code 1
F= Frequency 4Mhz
SPST
XF- Transformer TF[NI
N: manufactures part number
SW-SPST1O@ 125A-CA205-73
10 A
125
AC
CA 205-73
U-74HC138N
74HC13 SN
Cad nomenclature for standard decal types
300x200y200-47
The first number is the spacing of the holes on the board.
Second number is the length of the package in the same plane as the PCB holes.
The third number is the width of the part package perpendicular to the plane of the PCB holes.
The number after the dash is the finished hole size.
The first letter where x is in the example
S is a standard 60 mil pad
R shows a Round part (with only one dimension)
The second letter where y is in the example
P shows that the part is polarized and needs to be placed with a symbol to insure correct orientation.
D Is for a Diode outline.
NPN
transistors have a schematic decal that can be numbered in more than
one way. Thus there have to be NPN-EBC and NPN-BCE. And the pin s are
numbered left to right 1-2-3.
A
further problem is that standard decals such as SOT-23 may well have
more than one numbering system. Thus the need to set a standard that
looking at the top of the part, with the writing upside-up, pin one is
on the lower left hand corner and they count counter clockwise as all
chips should. Thus you will see some SOT23s that dont follow this
convention, and are number clockwise. These need to be designated as
SOT-132. A 5-pin version (SOT23-5) would normally be
SOT23-5-12345.
(C)2006 Karl Schmidt
Sponsored by Transtronics, inc.