[AMRadio] Ferroresonant transformer revisited


W5OMR/Geoff w5omr at satx.rr.com
Wed May 10 16:14:26 EDT 2006


John E. Coleman (ARS WA5BXO) wrote:

BTW, ,John - those Transistors I got, and told you about (for the 
solid-state audio driving circuit) are
2SC3461's.  They would probably be a good replacement for the ECG164's, 
for directly driving the grids of a Class B  modulator.

--
-Geoff/W5OMR


2SC3461    NPN Triple Diffused Planar Type Silicon Transistor 800V/8A 
Switching Regulator Applications    SANYO

NPN Triple Diffused Planar Type Silicon Transistor

2SC3461
800V/8A Switching Regulator Applications
Features
· High breakdown voltage and high reliability. · Fast switching speed 
(tf : 0.1µs typ). · Wide ASO. · Adoption of MBIT process.

Package Dimensions
unit:mm 2022A
[2SC3461]

Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Collector-to-Base Voltage Collector-to-Emitter Voltage 
Emitter-to-Base Voltage Collector Current Collector Current (Pulse) Base 
Current Collector Dissipation Junction Temperature Storage Temperature 
Symbol VCBO VCEO VEBO IC ICP IB PC Tj Tstg
Tc=25°C PW300µs, Duty Cycle10%

1 : Base 2 : Collector 3 : Emitter SANYO : TO-3PB

Conditions

Ratings 1100 800 7 8 25 4 140 150 ­55 to +150

Unit V V V A A A W
°C °C

Electrical Characteristics at Ta = 25°C
Parameter Collector Cutoff Current Emitter Cutoff Current DC Current 
Gain Gain-Bandwidth Product Output Capacitance Symbol ICBO IEBO hFE1 
hFE2 fT Cob VCB=800V, IE=0 VEB=5V, IC=0 VCE=5V, IC=0.6A VCE=5V, IC=3A 
VCE=10V, IC=0.6A VCB=10V, f=1MHz 10* 8 15 155 MHz pF Conditions Ratings 
min typ max 10 10 40* Unit µA µA

* : The hFE1 of the 2SC3461 is classified as follows. When specifying 
the hFE1 rank, specify two ranks or more in principle.
10 K 20 15 L 30 20 M 40



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