Description
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Test Zeners, Avalanche Diodes, VDRs, TVSs, LED strings and much more (up to 50V!)

Key Features:

Measures breakdown voltage (0.00V to 50.00V) with a resolution as fine as 20mV.
Measures slope resistance (up to 1kΩ at 15mA with a 1Ω resolution).
Supports most Zeners, Avalanche diodes and reference diodes from 0V up to 50V.
Great for testing VDRs, TVSs and other types of voltage protection devices.
Selectable test currents: 2mA, 5mA, 10mA and 15mA.
Tiny duty cycle of test current to minimise heating of your component even when testing at 50V and 15mA.
Single Alkaline AAA battery (included).
Long battery life and regulated test conditions even when the battery voltage is as low as 1.0V.
Test voltages are below levels described in the Low Voltage Directive 2006/95/EC.
Continuous measurement display (updated 3 times per second).
Measurement "hold" function to hold displayed values even if component is removed.
Fitted gold plated crocodile (alligator) clips.
Very comprehensive printed user guide.
24 month warranty.

Parameter	Min.	Typical	Max.	Notes
Zener voltage range (Vz)	0.0V		50.0V
Nominal test currents (Iz)	2mA, 5mA, 10mA, 15mA
Set test current accuracy	±1% ±0.2mA
Zener voltage measurement accuracy	±1% ±40mV
Zener voltage measurement resolution	20mV		40mV
Test voltage into an open circuit (pulsed)			60V	1
Test current into a short circuit (pulsed)			35mA
Test current duty cycle	0.1%	1%	5%	2
External abuse voltage			±50V
Slope resistance measurement range	0Ω 0Ω 0Ω 0Ω		8000Ω 3200Ω 1600Ω 1000Ω	Iz=2mA Iz=5mA Iz=10mA Iz=15mA
Displayed Slope resistance resolution		5Ω 2Ω 1Ω 1Ω		Iz=2mA Iz=5mA Iz=10mA Iz=15mA
Slope resistance measurement accuracy		±1% ±10Ω ±1% ±4Ω ±1% ±2Ω ±1% ±2Ω		Iz=2mA Iz=5mA Iz=10mA Iz=15mA
Slope resistance current span	(Iz-50%) to (Iz+50%)
Slope resistance measurement method	Differentiation of curve that fits: (Iz-50%,Vz₁), (Iz,Vz₂) and (Iz+50%,Vz₃)
Measurement rate		3Hz
Auto-off period		60 seconds
Battery type	AAA Alkaline x 1
Battery voltage range	0.9V		1.6V
Low battery warning	1.0V ± 0.05V
Dimensions (excl. leads)	103x70x20mm
Operating temperature	10°C		40°C

Notes:
1. 60V pulsed DC satisfies lower limit of 75V(DC) for Low Voltage Directive 2006/95/EC.
2. Duty cycle of test current designed to keep power dissipation of Zener under test to very low levels.