371A

The Tektronix 371A is an industry-standard high-power curve tracer designed for the characterization and testing of high-power semiconductor devices, such as thyristors, SCRs, IGBTs, and power MOSFETs. It delivers high-voltage measurements up to 3000 V and high-current measurements up to 400 A peak pulsed.

Component Testing High Voltage Power Electronics Semiconductor Testing

Specifications

General

Parameter	Value
Interfaces	GPIB (IEEE-488.1)
Display	7-inch CRT with internal graticule
Cooling Method	Forced-air cooling

Physical

Parameter	Value
Power Supply	90 to 250 VAC, 48 to 63 Hz, 400 W maximum
Operating Temperature	10 to 40 °C
Dimensions (W×H×D)	326 mm × 403 mm × 641 mm
Weight	36.3 kg

Collector/Drain Sweep Supply

Parameter	Value
Max Peak Voltage (High Voltage Mode)	3000 V
Max Peak Voltage (High Current Mode)	30 V
Max Peak Current (High Voltage Mode)	4 A
Max Peak Current (High Current Mode)	400 A
Max Peak Power (High Voltage Mode)	300 W
Max Peak Power (High Current Mode)	3000 W
Pulse Sweep Width	250 µs
Sweep Polarities	NPN (+), PNP (-)

Step Generator (Base/Gate Stimulus)

Parameter	Value
Step Generator Output Modes	Current Step, Voltage Step
Current Step Range	1 µA to 2 A per step in 1-2-5 sequence
Voltage Step Range	50 mV to 5 V per step in 1-2-5 sequence
Max Number of Steps	10
Step Offset Range	-10 to +10 steps

Horizontal Deflection System

Parameter	Value
Horizontal Collector Voltage Sensitivity	50 mV/div to 500 V/div
Horizontal Accuracy	±1.5% of reading + 0.05 division
A/D Converter Resolution	10-bit

Vertical Deflection System

Parameter	Value
Vertical Collector Current Range (High Voltage Mode)	10 µA/div to 500 mA/div
Vertical Collector Current Range (High Current Mode)	1 A/div to 40 A/div
Vertical Accuracy	±1.5% of reading + 0.05 division

Test Fixture & Protection

Parameter	Value
Standard Test Fixture Model	A1005
Safety Interlock	Mechanical and electrical interlock switch on the test fixture cover

Display & Measurement Capabilities

Parameter	Value
Waveform Storage Capacity	16 non-volatile memories
Setup Storage Capacity	16 non-volatile memories
Floppy Disk Drive	3.5-inch 1.44 MB MS-DOS compatible

Environmental Specifications

Parameter	Value
Storage Temperature Range	-40 to +75 °C

Display

Parameter	Value
CRT Graticule	10 × 10 divisions (0.8 cm/div)
CRT Phosphor Type	P31 (GH)
CRT Size	7 in
Cursor Types	Dot, Window, Tangent
Display Modes	Store, Non-Store, Reference, Compare

Collector Supply

Parameter	Value
Collector Supply Pulse Width	250 µs

Step Generator

Parameter	Value
Step Generator Max Output Voltage (Current Mode)	12 V
Step Generator Max Output Current (Voltage Mode)	2 A

Measurement & Display Modes

Parameter	Value
Cursor Modes	Dot, Window, Function
Display Acquisition Modes	Normal, Envelope, Average

Environmental

Parameter	Value
Maximum Operating Altitude	4500 m (15,000 ft)
Maximum Non-Operating Altitude	15,000 m (50,000 ft)

Interfaces

Parameter	Value
GPIB Standard Compliance	IEEE 488.1
GPIB Function Subsets	SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0, E1

Power Supply

Parameter	Value
AC Power Source Voltage Settings	100 V / 120 V / 220 V / 240 V AC (±10%)
AC Power Source Frequency	48 Hz to 63 Hz
Max Power Consumption	400 W

Measurement

Parameter	Value
DUT Channel Selection	A, Standby, B

Performance

Parameter	Value
Horizontal Magnifier	x10
Vertical Magnifier	x10

Technology

Analog-Digital hybrid curve tracing

Applications

High-power semiconductor device characterization

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