Which Keysight fixture is best suited for high-temperature testing of SMD components?

The Keysight 16194A is designed for high-temperature environments, operating from -55 °C to +200 °C. It supports SMD components up to 500 MHz.

What is the frequency limit of the 16196A RF SMD fixture?

The Keysight 16196A supports measurements from DC up to 3 GHz for 1608 (metric) / 0603 (EIA) parallel-electrode SMD components.

Does the 16047A leaded fixture require an external power supply?

No, the Keysight 16047A is a passive test fixture and does not require an external power supply.

Keysight Technologies (Agilent HP) Test Fixtures

7 models with full specifications in Test Fixtures.

This guide covers Keysight Technologies (formerly Agilent and HP) precision test fixtures designed for LCR meters and impedance analyzers. These fixtures establish reliable electrical connections to devices under test (DUTs) while minimizing residual impedance and stray capacitance. Engineering teams and technical buyers can use this overview to select the correct fixture interface based on component type—such as leaded, surface-mount (SMD), or solid dielectric materials—as well as operating frequency, temperature range, and instrument compatibility.

Frequency Range: DC to 3 GHz
Contact Interfaces: 4-Terminal Pair (BNC), APC-7
Supported DUT Types: Axial/Radial Leaded, SMD, Dielectric Solids
Max Temperature Range: -55 °C to +200 °C

All models

Model	Type	Frequency Range	Operating Temperature	Weight
16196A	Test Fixtures	DC to 3 GHz	-55 °C to +85 °C	0.25 kg
16047A	Test Fixtures	DC to 13 MHz	0 to 55 °C	105 g
16334A	Test Fixtures	DC to 15 MHz	0 to 55 °C	0.29 kg
16034E	Test Fixtures	DC to 40 MHz	0 to 55 °C	0.27
16047C	Test Fixtures	DC to 40 MHz	0 °C to 55 °C	0.46
16194A	Test Fixtures	DC to 500 MHz	-55 °C to +200 °C	350 g
16453A	Test Fixtures	1 MHz to 1 GHz	-30 °C to +85 °C	0.6 kg

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Leaded Component Fixtures

Keysight offers dedicated test fixtures for evaluating axial and radial leaded components. These fixtures connect directly to the unknown terminals of compatible LCR meters or impedance analyzers without cables, reducing residual inductance and resistance.

Keysight 16047A: Designed for evaluations up to 13 MHz, this fixture uses a 4-terminal Kelvin connection. It supports lead diameters ranging from 0.3 mm to 2.0 mm and axial lead pitches from 5 mm to 20 mm. Typical residuals include a residual resistance of 15 mΩ or less and a stray capacitance of 12 pF or less.
Keysight 16047C: For higher frequency applications, the 16047C extends capability up to 40 MHz. It features a 4-Terminal Pair configuration with an integrated guard terminal (via the outer BNC conductor shielding). It accommodates lead diameters from 0.1 mm to 2.0 mm and reduces stray capacitance to 1.5 pF or less.

Surface-Mount Device (SMD) Fixtures

SMD fixtures must adapt to varied component geometries while maintaining repeatable contact. Keysight's SMD portfolio spans low-frequency tweezer types to high-frequency RF parallel-electrode fixtures.

Keysight 16334A: A tweezer-type fixture with gold-plated contact tips designed for evaluations up to 15 MHz. It uses a 4-terminal pair BNC interface and supports SMD component widths up to 10 mm, with a minimum imperial case size of 0603. It includes open and short compensation support.
Keysight 16034E: Operating from DC to 40 MHz, this fixture features a spring-loaded sliding contact mechanism. It handles imperial case sizes from 0603 to 3131 (metric 1608 to 8080) with a residual resistance below 20 mΩ.
Keysight 16194A: Designed for environmental chamber testing, this fixture operates across a wide temperature range of -55 °C to +200 °C and frequencies up to 500 MHz. It connects via an APC-7 interface and supports imperial SMD sizes from 0603 to 2220.
Keysight 16196A: This coaxial parallel-electrode RF fixture is optimized for precise impedance measurements up to 3 GHz. It is dedicated to 1608 metric (0603 EIA) case sizes and utilizes a pressure cap mechanism to ensure highly repeatable electrode contact.

Dielectric Material Fixtures

For material characterization rather than discrete component testing, Keysight provides specialized clamping fixtures to interface with impedance and material analyzers.

Keysight 16453A: Engineered for high-frequency permittivity and loss tangent measurements of solid sheets or films. Operating from 1 MHz to 1 GHz, it employs the parallel plate method. It features an APC-7 instrument connector, supports samples with a minimum diameter of 15 mm and a thickness range of 0.3 mm to 3 mm, and operates within a temperature range of -30 °C to +85 °C.