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What is Transistors with internal resistors?

Latest Updated:12/01/2010

Question:

What is Transistors with internal resistors?

Answer:

(Transistors with internal resistors are named in accordance with Renesas Electronics' original naming format.)
The Orderable Part Number is explained below using the FA1A4M as an example.

Package Equivalent Circuit + Withstanding Voltage R1 Resistor
(Significant Figure)
R1 Resistor
(Index x 10n)
R2:R1 Ratio
F A1 A 4 M
 
Package Symbol
SC-59 F
SC-62 H
SC-70 G
SC-75 K
 
Equivalent Circuit (Vceo) Symbol
Equivalent circuit A (20 V) A1 to M1
Equivalent circuit B (-20 V) N1 to X1
Equivalent circuit A (25 V) A1 to M1
Equivalent circuit B (-25 V) N1 to X1
Equivalent circuit A (60 V) A1 to M1
Equivalent circuit B (-60 V) N1 to X1
Equivalent circuit C (60 V) A2 to M2
Equivalent circuit A (50 V) A4 to M4
Equivalent circuit B (-50 V) N4 to X4
 
Resistance Symbol
1.0 A
1.2 B
1.5 C
1.8 E
2.2 F
2.7 H
3.3 J
3.9 K
4.7 L
5.6 M
6.8 N
8.2 P
 
n Symbol
1 1
2 2
3 3
4 4
5 5
6 6
 
Ratio Symbol
No R1 A
1/100 E
1/50 F
1/20 H
1/10 J
1/5 K
1/2 L
1 M
2 N
5 P
10 Q
20 R
50 S
100 T
No R2 Z


Note: If there is no R1, the 4th and 5th digits indicate R2.

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