The document details the device modeling report for the programmable unijunction transistor part number TN41B from Toshiba Bee Technologies Inc. It includes specifications such as saturation current, peak voltage and current characteristics, forward voltage, and pulse output voltage with rise times. The report also presents simulation results and evaluation circuit configurations relevant to the device's performance.

1. Device Modeling Report
COMPONENTS: Programmable Unijunction Transistor
PART NUMBER: TN41B
MANUFACTURER: TOSHIBA
Bee Technologies Inc.
All Right Reserved Copyright Bee Technologies Inc. 2005

2. Pspice model
Model description
parameter
IS Saturation Current
ISE Non-ideal Base-Emitter Diode Saturation Current
RC Series Collector Resistance
TR Reverse transit time
TF Forward Transit Time
Equivalent circuit
A
QPNP-D G
QNPN-D
K
All Right Reserved Copyright Bee Technologies Inc. 2005

3. Peak Voltage (Vp) and Peak Current (Ip) Characteristics
Peak voltage and current (Vp,Ip)
12V
(150.000n,10.305)
Simulation
8V
Valley point (Min.peak)
4V Vv=0.479V, Iv=11.947uA
(11.947u,478.997m)
0V
0A 10uA 20uA
V(A)
I_I1
Simulation Result
Vp=10.305(V) at Ip=0.15u(A)
SPEC: Vp=10.2(V) to 10.6(V) at Ip(max.)=0.15u(A)
Forward Voltage Characteristics
12V
,10.305)
8V
Vf=1.500V at IF=50mA
4V
(50.000m,1.5004)
78.997m)
0V
0A 20mA 40mA 50mA
V(A)
Simulation Result I_I1
Vf=1.5(V) at If=50m(A)
SPEC: Vf=1.5(V)MAX. at If=50m(A)
All Right Reserved Copyright Bee Technologies Inc. 2005

4. Voltage and Current Characteristics Reference
Evaluation Circuit
RG
{Rprg}
TN41B
50mAdc
I1
K
VS
10Vdc
0 0
0
All Right Reserved Copyright Bee Technologies Inc. 2005

5. Pulse Output Voltage and Pulse Output Rise Time
7.0V
(2.3405u,6.6082)
5.0V (2.3189u,6.0000)
2.5V
Tr=69ns
(2.2503u,600.000m)
0V
1.85us 2.00us 2.40us 2.75us
V(OUT)
Time
Vo=6.608(V) at Vi=20(V), Ct=0.2u(F)
SPEC: Vo=6(V) to 10(V) at Vi=20(V), Ct=0.2u(F)
tr=69(ns) at Vi=20(V), Ct=0.2u(F)
SPEC: tr < 70(ns)[Typ.] to 80(ns)[Max.] at Vi=20(V), Ct=0.2u(F)
Evaluation circuit
R5 R3
510k 16k
V1
20Vdc
TN41B
0
OUT
R4
R6
C1 27k
20
{C}
IC = 12.91
0
All Right Reserved Copyright Bee Technologies Inc. 2005