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CTL503 + Blank PCB Bundle

CTL503 + Blank PCB Bundle

Regular price $293.00 USD
Regular price Sale price $293.00 USD
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This bundle includes 1x CTL503 and a discounted additional pack of blank PCB's for use with the product.

The CTL503 Curve Tracer is a low-cost transistor (BJT and FET) computer controller curve tracer. Unlike other simple curve tracing units the CTL503 is designed to measure devices to 100V and upto 3A.  Four collector resistors (relay selected) allow the user to test the smallest of BJT’s and FET’s as well as extracting meaningful curves from larger TO3/TO247 packaged devices.  Limits on both peak test voltage and peak test current can be easily set to prevent exceeding device parameters.

Pulse testing (80us/300us) is used to minimise device heating and to ensure the CTL503 can be powered via USB. This may be disabled for smaller parts.

Connected and powered via USB  and running our own free software (EPIC, download here) the CTL503 is easily configured using a built in wizard (for quick results), or the user can adjust every instrument parameter to suit. Works with EPIC 21.010 and above.
Users can save data from runs, as well simply grab images directly from EPIC.

Connections are made to the DUT (device-under-test) with the built-in colour coded test leads with crocodile clips.

Screen captures (EPIC21.010) show:
(i) Vds vs Id plot at different Vgs voltages (MOSFET).
(ii) XXXX
(iii) XXXXX

Features & Specifications

  • Step generator: 0 to 20 steps
  • Current mode: 1uA to 20mA (4 ranges)
  • Voltage mode: -10V to +10V (using 270R gate resistor)
  • Offset function for both current and voltage generation
  • Step generator can cross zero (e.g. start at -10V and sweep to +10V)
  • Collector sweep voltage: 0V to +100V (or -100V), adjustable peak voltage to limit chance of damage.
  • Collector resistance ranges: 12R, 270R, 2K45, 27K
  • Peak collector current: 3A
  • Acccuracy: >TBA
  • Powered via external (supplied) mains PSU, supplied with UK, EU, US and AU/NZ adaptors.
  • USB 2.0 connection to PC
  • Bright RED LED indicates HV generator is active, solid bright GREEN LED indicates unit is connected.


Each CTL503 calibrated and adjusted in-house as part of our standard production test procedure.  Calibration values are stored within the instrument.
If recalibration/adjustment is necessary it is simply done through the UTILITIES menu in EPIC (you will need a DMM with voltage and  current measurement ability).


1x CTL503 Curve Tracer

1x Pack of blank PCB's for use with CTL503
1x USB cable
1x Mains PSU (12V, 1.5V) with UK, EU, USA/CANADA and AUS/NZ adaptors

1x calibration (four resistor) token PCB
1x CTL011 SMT token PCB

please note: any test leads or devices shown are not supplied as standard.


View full details
  • Collector Drive:

    • Voltage: +/- 100V, ramped

    • Resistance: 4 ranges (24R, 270R, 2.7kR, 27kR)

    • Measurement: Current, Voltage (between C & E terminals)
  • Base Drive:

    • Modes: Current (BJT), Voltage (FET)

    • Voltage: +/-12VCurrent: +/-25mA

    • Steps: 0 to 12

    • Resistance: 4 ranges (automatically controlled)
    • Measurement: Voltage (between B & E terminals)
    • Automatic clamping resistor (avoid negative compliance voltages in current mode)
    • Sample rate: 100Hz max.
    • Pulse mode: 80usec minimum pulse length
  • Power & Connection

    Connection: USB type B

    Power: 12V 1.5A adaptor (1x included with purchase)