# TCP305A Tektronix Current Probe Used

**Features:**

-   AC/DC measurement capabilities
-   DC - 50 MHz, 50 A DC
-   Automatic scaling and units- Oscilloscope on-screen readout of magnitude and amps reduces measurement errors with no more hand calculations-Requires a TDS TEKSCOPE oscilloscope or a TekConect oscilloscope with TCA-BNC adapter
-   AC/DC input coupling
-   Low insertion impedance reduces device under test loading
-   Split-core construction allows easy circuit connection
-   Status indicators provide visual operating status and notification of potential error conditions - degauss, probe open, overload, not terminated into 50 Ω, noncompatible probe type
-   Low DC drift and noise allows improved low-level current measurements
-   Certified for use in U.S., Canada, and Europe. Complies with applicable IEC standards
-   **Warranty: One year parts and labor with New Probe**

**Power requirements**

-   Amplifiers: 90 V to 264 V, 47 to 440 Hz, 50 W; Maximum CAT II (auto switch)
-   Probes: TCP312A, TCP305A, TCP303 probes require a TCPA300 Amplifier; TCP404XL probe requires a TCPA400 Amplifier

**Applications:**

Development and analysis solutions for designers, installers, and service personnel in telecom, data comm, computer, and semiconductor power electronics environments for:

-   Power supplies (switching and linear)
-   Semiconductor devices (SCRs, IGBTs, MOSFETs, CMOS, BJTs)
-   Power inverters/converters
-   Electronic ballasts
-   Industrial/consumer electronics
-   Mobile communications (phone, satellite, relay stations)
-   Motor drives
-   Transportation systems (electronic vehicles, electric trains, locomotives, avionics)

The TCPA300 amplifier, when used with TCP305A probe, provides a wide range of current measurement capability and spans the gap between low-level milliamp measurements to very high current levels.

The split-core probes incorporate both transformer and Hall effect technology to provide broad bandwidth measurement capabilities from DC up to 100 MHz at current levels as low as 1 milliamp to thousands of amps (when used with CT4 current transformer).

When connected to Tektronix TDS Oscilloscopes with TEKPROBE Level II or TekConnect (w/TCA-BNC) interfaces, current measurements and calculations are simple and easy. Additional measurement power is available with add on software such as the TDSPWR2 power measurements package.

**Meets today's AC/DC current measurement applications**

The TCPA300 amplifier, when used with TCP312A, TCP305A, or TCP303 probes, provides a wide range of current measurement capability and spans the gap between low-level milliamp measurements to very high current levels. These three probes provide current measurement capabilities of 30 A, 50 A, and 150 A DC continuous. For even higher current levels, the TCPA400 amplifier with the TCP404XL current probe measures 500 A DC continuous and 750 A DC continuous, derated with duty cycle.

Higher-frequency performance is available with the TCP312A w/TCPA300 providing ≥100 MHz bandwidth and a maximum current of 30 A DC.

**Measurement errors and manual calculations are now a thing of the past**

With this new series of current measurement tools, automatic control and on-screen scaling and units is provided for users of Tektronix TDS3000, TDS500, TDS600, TDS700, TDS5000, TDS6000, and TDS7000B series oscilloscope systems (the DPO3000, MDO/MSO/DPO4000, MSO/DPO5000, and DPO7000 series oscilloscopes, the TPA-BNC adapter is required).

The TCP300/TCP400 current measurement systems seamlessly integrate with your TDS series oscilloscope.

Even non-TEKPROBE systems can use the TCPA300/400 series to make proper current measurements by simply multiplying the measured output voltage on the oscilloscope by the TCPA300/400 series range setting.

## Details

- **Price:** 0.0 USD
- **Vendor:** Tektronix
- **Type:** Current Probes
- **Tags:** Current, Manufacturers, Other Equipment, Probe, product_manual_group_1, Tektronix

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 0.00 USD | In stock |
| NIST Traceable with Full Data | 0.00 USD | In stock |
| ISO IEC 17025 Accredited | 0.00 USD | In stock |

## Images

- TCP305A Tektronix Current Probe Used

---

> Source: [ValueTronics](https://valuetronics.com/products/tcp305a-tektronix-current-probe)
> Updated: 2026-05-21