B431

Features:

•  Wide Operating Range .1mA to100mA
•  Tight Band Gap Tolerance .... 0.5%
•  Low Temp. Coefficient.....30 ppm/
•  Wide temp range of 40 to +105 
•  Available in TO92, SOT-89, SO-8


Application

•  Switching Power Supplies
•  Adjustable Power Supplies
•  Linear Regulators
•  Battery Powered Equipment
•  Monitors, TV, VCR
•  Instrumentation


Pinout




Specifications

Parameter	Symbol	Maximum	Units
Cathode Voltage	Vz	37	V
Continuous Cathode Current	Iz	150	mA
Power Dissipation at TA - 25°C SOT-89 S0-8 TO-92	PD	1000 750 775	mW
Thermal Resistance S0-8 TO-92 SOT-89	OJA	175 160 110	°C/W
Operating Junction Temperature Range	TJ	-40 to +150	°C
Storage Temperature Range	TSTG	-65 to +150	°C
Lead Temperature (Soldering) 10 seconds	TLEAD	300	°C
ESD Rating (Human Body Model)	TESD	2	kV

Description

The Bay Linear B431 is a three terminal adjustable shunt regulator with thermal stability over Temperature range. Using two external resistors allows the output voltage to be adjusted from 2.5V to 36V. With a sharp turn on characteristics the B431 a superior replacement for zener diode applications.
 
The B431 shunt regulator has a tolerance of 0.5% which has proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturers assembly line and contribute a significant cost savings.