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Keysight

E 5250 A Low Leakage Switch Mainframe

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E 5250 A Low Leakage Switch Mainframe — Inventory photo
Fig. 01E 5250 A Low Leakage Switch MainframeInventory photo[1]

What it is

A low leakage switch mainframe is a programmable switching system used in semiconductor parametric test to route signals between measurement instruments and devices under test. The Keysight E 5250 A is a low leakage switch mainframe that expands a single measurement station to an automated measurement system.[2][3]

How it works

The E 5250 A switches DC current, DC voltage, capacitance, and pulse signals with DC instruments and LCR meters. The mainframe controls switching through a built-in GPIB interface. Plug-in modules can be configured either as a cross-point matrix for general parametric measurements or as a multiplexer for long-term reliability measurements.[2][3]

Switch modules plug into four slots that accept 30 mm height switch cards. The mainframe performs a self-test using the optional relay function test adapter (Option 301). Typical performance includes an offset current of less than 0.1 pA on the low leakage I-V port and a relay contact life greater than 10^8 operations in dry switching mode.[2][3]

What do the numbers mean?

Power & electrical5

Power requirements
100/120/220/240 V ± 10%, 47 Hz to 63 Hz[2]
Accurate?
Max voltage rating (E5252A) - channel to ground
200 V[2]
Accurate?
Max voltage rating (E5252A) - channel to channel
300 V[2]
Accurate?
Typical offset voltage (EMF) at 5 min (E5252A) - Low Leakage I-V Port
< 80 μV[2]
Accurate?
Bandwidth (-3 dB) (C-V, HF Port)
< 10 MHz[2]
Accurate?

Dimensions & facilities4

Number of slots
4 slots for 30-mm height switch cards[2]
Accurate?
Weight (mainframe)
11.2 kg[2]
Accurate?
Weight (E5252A)
2.0 kg[2]
Accurate?
Weight (E5255A)
2.1 kg[2]
Accurate?

Configuration & options25

Maximum VA
100 VA[2]
Accurate?
Size (mainframe)
230 mm H x 430 mm W x 600 mm D[2]
Accurate?
Size (E5252A card)
30 mm H x 395 mm W x 424 mm D[2]
Accurate?
Size (E5255A card)
30 mm H x 395 mm W x 424 mm D[2]
Accurate?
Operating temperature range
5°C to 40°C[2]
Accurate?
Storage temperature range
-40°C to 70°C[2]
Accurate?
Operating humidity range
5% to 80% (no condensation)[2]
Accurate?
Storage humidity range
5% to 90% RH at 65°C[2]
Accurate?
Altitude (operating)
0 to 2000 m (6500 ft)[2]
Accurate?
Altitude (storage)
0 to 15,240 m (50,000 ft)[2]
Accurate?
No. of ports (with E5252A matrix)
Low leakage I-V Port: 2, General I-V Port: 4, C-V Port: 2, HF Port: 2, Output Channels: 12[2]
Accurate?
No. of ports (with E5255A multiplexer)
Low leakage I-V Port: 3, Bias Port: 3, Output Channels: 24 (8 x 3)[2]
Accurate?
Max current rating (E5252A)
1.0 A[2]
Accurate?
Close channel residual R (E5252A) - Low Leakage I-V Port
0.6 Ω[2]
Accurate?
Close channel residual R (E5252A) - General I-V Port
1.0 Ω[2]
Accurate?
Close channel residual R (E5252A) - C-V, HF Port
1.0 Ω[2]
Accurate?
Channel isolation R (E5252A) - Low Leakage I-V Port (Condition A)
1e13 Ω[2]
Accurate?
Channel isolation R (E5252A) - General I-V Port (Condition A)
1e12 Ω[2]
Accurate?
Channel isolation R (E5252A) - C-V, HF Port (Condition A)
1e9 Ω[2]
Accurate?
Typical offset current (E5252A) - Low Leakage I-V Port
< 0.1 pA[2]
Accurate?
Typical offset current (E5252A) - General I-V Port
< 1000 pA[2]
Accurate?
Typical channel crosstalk capacitance (E5252A)
< 0.3 pF/ch[2]
Accurate?
Typical guard capacitance (E5252A) - Low Leakage I-V Port
< 145 pF[2]
Accurate?
Relay contact life (dry switching mode)
> 10^8 times[2]
Accurate?
Settling time (Low Leakage I-V Port)
< 3.5 sec / 0.4 pA[2]
Accurate?
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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Power requirements100/120/220/240 V ± 10%, 47 Hz to 63 Hz[2]
  • Max voltage rating (E5252A) - channel to ground200 V[2]
  • Max voltage rating (E5252A) - channel to channel300 V[2]
  • Typical offset voltage (EMF) at 5 min (E5252A) - Low Leakage I-V Port< 80 μV[2]
  • Bandwidth (-3 dB) (C-V, HF Port)< 10 MHz[2]

Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

What plug-in modules are available for the E 5250 A?

The E 5250 A accepts the E5252A 10 x 12 matrix switch and the E5255A 24-channel (8 x 3) multiplexer. Up to four modules can be installed per frame.[2][3]

What are the power requirements?

The E 5250 A requires 100/120/220/240 V ±10%, 47 Hz to 63 Hz, with a maximum VA of 100 VA.[2][3]

What is the typical offset current on the low leakage I-V port?

The typical offset current is less than 0.1 pA when zero volts are applied to all input and output channels.[2][3]

What is the relay contact life?

The relay contact life is greater than 10^8 operations in dry switching mode.[2][3]

What is the operating temperature range?

The operating temperature range is 5°C to 40°C with a humidity range of 5% to 80% (no condensation).[2][3]

Not publicly documented

The following facts about the E 5250 A Low Leakage Switch Mainframe are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the E 5250 A Low Leakage Switch Mainframe are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the E 5250 A Low Leakage Switch Mainframe are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the E 5250 A Low Leakage Switch Mainframe are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the E 5250 A Low Leakage Switch Mainframe are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the E 5250 A Low Leakage Switch Mainframe is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (3)Every fact above is drawn from these public sources
  1. [1]Inventory photo
  2. [2]testunlimited.com — testunlimited.comtestunlimited.com
  3. [3]https://www.transcat.com/media/pdf/keysight-E5250A-datasheet.pdf — transcat.comtranscat.com
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Last updated Oct 2, 2026.

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