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Key Features

The DCA Pro is an advanced new design that features a graphics display, USB communications, PC Software and an enhanced component identification library.

- Automatic component type identification.
- Automatic pinout identification (connect any way round).
- The DCA Pro supports all the components that the popular Peak Atlas DCA55 supports, but adds plenty more. Components supported include:
- Transistors (including Darlingtons), Silicon and Germanium types. Measures gain, Vbe and leakage.
- MOSFETs, enhancement mode and depletion mode types. Measure on-threshold (at 5mA) and approx transconductance (for span of 3mA-5mA).
- JFETs, including normally off SiC types. Measures pinch-off voltage (at 5uA) and approx transconductance (for span of 3mA-5mA).
- IGBTs (insulated gate bipolar transistors). Measures on-threshold (at 5mA).
- Diodes and Diode networks.
- LEDs and bicolour LEDs (2 lead and 3 lead types).
- Zener Diodes with measurement of zener voltage up to 9V at 5mA.
- Voltage regulators (measures regulation voltage, drop-out voltage, quiescent current).
- Triacs and Thyristors that require less than 10mA of gate current and holding current.

Stand-alone or with a PC
The instrument can be used stand-alone or connected to a PC. Either way, the DCA Pro will automatically identify the component type, identify the pinout and also measure a range of component parameters such as transistor gain, leakage, MOSFET and IGBT threshold voltages, pn characteristics and much more.

Curve Tracing
When connected to a PC using the supplied USB cable, a range of low current curve-tracing functions can be performed. Various graph types are available, with more to follow:
- Bipolar transistor output characteristics, IC vs VCE.
- Bipolar transistor gain characteristics, hFE vs VCE.
- Bipolar transistor gain characteristics, hFE vs IC.
- MOSFET and IGBT output function, ID vs VDS.
- MOSFET and IGBT transfer function, ID vs VGS.
- JFET output function, ID vs VDS.
- JFET transfer function, ID vs VGS.
- Voltage regulator, VOUT vs VIN.
- Voltage regulator, IQ vs VIN.
- PN junction I/V curves, forward and reverse options (for Zener diodes).

Curve tracing is performed using test parameters in the range of +/-12V or +/-12mA. All curve-tracing data can be instantly pasted into Excel© for further graphing and analysis. PC Software is included with the DCA Pro on a Peak USB memory stick. Software designed for Windows XP, Vista, Windows 7 and Windows 8 (all 32 or 64 bit).

Parameter	Min	Typ	Max	Note
Bipolar Transistors
Measurable current gain (h_FE) range	2		32000	2
h_FE accuracy (h_FE<2000)	±3% ±5 h_FE			2,8
h_FE test voltage (V_CEO)	3.0V		9.0V	2
h_FE collector test current	4.75mA	5.00mA	5.25mA
Base current for V_BE measurement	4.75mA	5.00mA	5.25mA
V_BE accuracy	±1% ±0.006V			8
V_BE resolution		3.0mV	6.0mV
V_BE for Darlington identification	0.95V	1.00V	1.80V	3
V_BE for Darlington (shunted types)	0.75V	0.80V	1.80V	4
V_BE threshold for germanium		0.55V
Acceptable V_BE			1.80V
Base-emitter shunt threshold	50kΩ	60kΩ	70kΩ
Acceptable collector leakage			1.5mA	6
Leakage current accuracy	±2% ±0.02mA
MOSFETs/IGBTs
Enhancement mode V_GS(ON) range	0.0V		10.0V	5
Depletion mode V_GS(ON) range	-5.0V		0.0V	5
V_GS(ON) accuracy	±2% ±0.01V			5
Drain current at V_GS(ON)	4.75mA	5.00mA	5.25mA
Drain-Source voltage at V_GS(ON)	3.5V		9.0V	5
Acceptable gate-source resistance	8kΩ
IGBT collector saturation threshold		0.40V		9
JFETs
Pinch-off V_GS(OFF) range	-10.0V		2.5V
Pinch-off drain-source current	4.5μA	5.0μA	5.5μA
Turn-on V_GS(ON) range	-9.0V		2.5V
Turn-on drain-source test current	4.75mA	5.00mA	5.25mA
V_GS accuracy	±2% ±0.01V
Transconductance (g_fs) range			99mA/V
g_fs test drain current span	3.0mA to 5.0mA
g_fs accuracy (<20mA/V)	±5% ±2mA/V
g_fs accuracy (<20mA/V)	±10% ±5mA/V

Parameter	Min	Typ	Max	Note
Thyristors and Triacs
Gate trigger test current	8.0mA	10.0mA	12.0mA	7
Load hold test current		10.0mA	15.0mA
Diodes and LEDs
Diode forward test current	4.75mA	5.00mA	5.25mA
Diode forward voltage accuracy	±1% ±0.006V
Acceptable V_F for a diode @ 5mA	0.15V
V_F for LED identification	1.5V		4.0V
Zener Diodes
Zener voltage range at 5mA	1.8V		9.0V
Zener voltage range below 5mA		9.0V	12.0V
Zener diode test current	0.50mA	5.00mA	5.25mA
Voltage Regulators
Input test voltage range (I_Q<3.0mA)	1.1V		10.0V
Input test voltage range (I_Q<5.0mA)			8.0V
Quiescent current range (I_Q)	0.00mA		5.00mA
Quiescent current accuracy	±2% ±0.02mA
Dropout voltage range (V_DO)	0.0V		3.0V
Dropout voltage accuracy	±2% ±0.02V
Output voltage accuracy	±1% ±0.006V
Load test current	0.13mA		1.25mA
General Parameters
Peak test current into S/C	-15.5mA		15.5mA	1
Peak test voltage across O/C	-13.5V		13.5V	1
Short circuit threshold	5Ω	10Ω	20Ω	1
Battery type (x1)	Alkaline AAA, LR03, MN2400
Battery voltage range	1.0V	1.5V	1.6V
Battery warning threshold		1.0V
USB current consumption	500mA pk active. ≤2mA sleep
Dimensions (body)	103 x 70 x 20 mm
	4.1" x 2.8" x 0.8"
Operating temperature range	10°C		40°C	10
	50°F		104°F	10

Notes:
1. Between any pair of test clips.
2. Collector current of 5.0mA. Gain accuracy valid for gains less than 2000.
3. Resistance across reverse biased base-emitter > 60kΩ.
4. Resistance across reverse biased base-emitter < 60kΩ.
5. Load current of 5.0mA.

6. Collector-emitter voltage of 10.0V.
7. Thyristor quadrant I, Triac quadrants I and III.
8. BJT with no shunt resistors.
9. Load current typically 10.0mA.
10. Subject to acceptable LCD visibility.