HFD3
Primary topicSignal relays UAE

Signal relays

Precision switching for controls

Signal relay evaluation in an electronics laboratory
Signal relays UAE

Verified models in this family

Specifications below are example market references checked against publicly available manufacturer pages and English datasheets. Use them to shortlist, not to release a drawing.

HFD3 example

HFD3

Telecom-grade signal relay with bifurcated contacts for instrumentation, security and communication interfaces.

Contact rating
2 A 30 VDC · 0.5 A 125 VAC · max 62.5 VA / 90 W
Coil voltage
1.5 – 48 VDC · single-side stable & latching
Contact form
2 Form A / 2 Form C · SMT & DIP
Endurance
Mechanical 1×10⁸ ops · surge 2.5 kV
Certifications
UL E133481 · VDE 40018867 · CQC 14002107409
HFD4 example

HFD4

Fourth-generation signal relay with a 105 °C-rated version for hot enclosure electronics and dense SMT assembly.

Contact rating
2 A 30 VDC · 1 A 30 VDC at 105 °C version
Coil voltage
1.5 – 24 VDC · monostable 100 mW option
Contact form
2 Form C · J-leg SMT available
Endurance
Surge 2.5 kV · IEC 62368-1 reinforced insulation
Certifications
UL E133481 · TÜV R50333270 · CQC
HFD2 example

HFD2

DIP signal relay with 75 mW coil for battery-powered monitoring and metering electronics.

Contact rating
2 A 30 VDC · max 125 VA / 90 W
Coil voltage
3 – 12 VDC (M type) · 75 mW low-power version
Contact form
2 Form C · 16-pin IC socket compatible
Endurance
Electrical 5×10⁴ ops (2 A 30 VDC) · mechanical 1×10⁸
Certifications
UL E133481 · TÜV R50306253 · CQC

Final parameters, derating and ordering codes are always governed by the manufacturer’s latest datasheet for the exact version selected.

Selection starts with the operating conditions

The model family narrows the search. The exact ordering code follows only after the load, voltage, coil, environment, standards and volume are known.

01

Load

Resistive, inductive, motor, lamp, capacitor or DC fault duty

02

Electrical

Working voltage, continuous current, inrush and switching frequency

03

Control

Coil supply, tolerance, suppression and auxiliary feedback

04

Environment

Enclosure temperature, altitude, vibration, sealing and duty cycle

Manufacturer source (third-party)

Use the manufacturer page (third-party) for current datasheets, certificates, ordering codes and engineering confirmation.

Manufacturer product page (third-party)

Prepare a model-selection request

Share the operating conditions and intended annual volume. No local availability or approval is assumed.

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