Insulation/Isolation Layer: Thickness Tolerance ±0.05 mm

Component Specifications

Definition

A specialized dielectric component in current sensing devices that electrically isolates the sensing element from surrounding conductive parts, preventing stray currents, reducing electromagnetic interference, and maintaining signal integrity in measurement circuits.

Working Principle

Works by providing high electrical resistance and dielectric strength between the current-carrying conductor and the sensing element, blocking unwanted current flow while allowing magnetic or electric fields to pass for accurate current measurement.

Materials

Polyimide film, epoxy resin composites, ceramic substrates, silicone rubber, or PTFE-based materials with dielectric strength >5kV/mm, thermal conductivity 0.2-1.5 W/m·K, and operating temperature range -40°C to 200°C.

Technical Parameters

Parameter	Typical range	Notes & selection driver
CTI	>600 V
Dielectric Strength	>5 kV/mm
Thickness Tolerance	±0.05 mm
Thermal Conductivity	0.2-1.5 W/m·K
Insulation Resistance	>10^12 Ω
Operating Temperature	-40°C to 200°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

IEC 60664-1, UL 94, ISO 6722

Parent Products

This component is used in the following industrial products

Current Sensing Element

A component that detects and converts electrical current into a measurable signal within a current sensor circuit.

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Engineering Analysis

Risks & Mitigation

Dielectric breakdown under high voltage
Thermal degradation at elevated temperatures
Moisture absorption reducing insulation resistance

FMEA Triads

Trigger: Material contamination during manufacturing
Failure: Reduced dielectric strength leading to electrical shorts
Mitigation: Implement cleanroom assembly and material purity testing

Trigger: Thermal cycling stress
Failure: Cracking/delamination causing insulation failure
Mitigation: Use materials with matched CTE and thermal stress testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm thickness, ±5% dielectric constant

Test Method

Hi-pot testing per IEC 60664-1, insulation resistance measurement per ASTM D257

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Insulation/Isolation Layer

Manufacturer profiles associated with Insulation/Isolation Layer.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of an insulation layer in current sensing?

To prevent electrical leakage between the current conductor and sensing circuitry, ensuring accurate current measurement and operator safety.

How does insulation material affect current sensor performance?

Material properties determine dielectric strength, thermal stability, and EMI resistance, directly impacting measurement accuracy and long-term reliability.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Insulation/Isolation Layer