Indicator LED: Forward Voltage 1.8-3.2V

Component Specifications

Definition

A light-emitting diode component integrated into surge protection modules to provide visual status indication of protection circuit functionality, fault conditions, and operational readiness through specific color coding and illumination patterns.

Working Principle

Operates by converting electrical current into visible light through electroluminescence in a semiconductor material, with specific voltage thresholds and current limiting resistors to ensure proper illumination while indicating module status (green=operational, red=fault, amber=warning).

Materials

Semiconductor: Gallium Arsenide Phosphide (GaAsP) or Gallium Phosphide (GaP) for specific wavelengths; Encapsulation: Epoxy resin with diffuser; Leads: Copper alloy with tin plating; Housing: Polycarbonate or ABS plastic with UL94 V-0 rating.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Wavelength	525nm (green), 630nm (red), 590nm (amber)
Viewing Angle	30-60 degrees
Forward Current	10-20mA
Forward Voltage	1.8-3.2V
Life Expectancy	50,000-100,000 hours
Luminous Intensity	5-20 mcd
Operating Temperature	-40°C to +85°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 61000-4-5, UL 1449, IEC 62368-1, RoHS

Parent Products

This component is used in the following industrial products

Surge Protection Module

A protective electronic component designed to limit transient voltage spikes in electrical circuits.

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Sensing Unit

A detection component within a fastener feeder system that monitors fastener presence, position, and feeding status.

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Engineering Analysis

Risks & Mitigation

Incorrect status indication due to LED failure
False positive/negative fault indications
Environmental degradation of LED clarity
Electrical interference with sensitive circuits
Incompatible voltage/current requirements

FMEA Triads

Trigger: LED semiconductor degradation
Failure: Diminished or no light output
Mitigation: Use high-reliability LEDs with 50,000+ hour ratings; implement current limiting with 20% margin; provide protective circuitry against voltage spikes

Trigger: Current limiting resistor failure
Failure: LED burnout or insufficient illumination
Mitigation: Use metal film resistors with 1% tolerance; implement redundant resistor paths; provide thermal protection

Trigger: Environmental contamination
Failure: Reduced visibility through lens
Mitigation: Use sealed LED assemblies; implement protective coatings; specify IP65 or higher rating for harsh environments

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% for current limiting resistors, ±10nm for wavelength specification, ±20% for luminous intensity

Test Method

Visual inspection under specified lighting conditions; electrical testing with calibrated current source; environmental testing per IEC 60068-2 standards; surge immunity testing per IEC 61000-4-5

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 Indicator LED

Manufacturer profiles associated with Indicator LED.

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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 do different LED colors indicate on surge protection modules?

Green indicates normal operation and protection active; Red indicates fault or protection failure requiring replacement; Amber/yellow indicates warning or degraded protection; Flashing patterns may indicate specific fault conditions.

How are indicator LEDs integrated into surge protection circuits?

LEDs are connected in parallel with MOVs or gas discharge tubes through current-limiting resistors, with separate circuits for status monitoring that detect voltage presence, thermal protection status, and MOV degradation.

What maintenance is required for indicator LEDs?

No routine maintenance required; LEDs should be visually inspected during regular equipment checks for proper illumination; replacement is only needed if LED fails to illuminate when module is powered and functional.

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.

Indicator LED