JT33F Subminiature High Power Relay - Technical Summary

1. Features

• 10A switching capability.
• Creepage distances: 8mm between coil and contacts; NO type 4.5mm; CO type 4mm.
• Available in 1 Form A and 1 Form C contact configurations.
• Standard PCB layout compatible.
• Plastic sealed and flux-proofed types available.
• UL insulation system: Class F.
• RoHS compliant, environmentally friendly product.
• Compact outline dimensions: 20.5 x 10.2 x 15.3 mm.
• Compliant with IEC 60335-1 standards.

2. Contact and Electrical Data

• Contact resistance and material: AgSnO2 (Silver Tin Oxide).
• Contact ratings:
  • 5A at 30VDC
  • 10A max switching current, 3A for certain loads
  • Typical endurance: 61 x 10^4 operations (mechanical), 51H type: 1 x 10^4 operations at 5A 277VAC general load.
• Max switching power: 831VA / 90W (varies by load type).
• Max switching voltage: 277VAC / 30VDC.

3. Coil Data

• Nominal coil voltages available: 3, 5, 6, 9, 12, 18, 24, 48 VDC.
• Coil resistance varies by voltage, e.g., 7.5Ω at 3V, up to 5120Ω at 48V (±10%).
• Coil power consumption:
  • Standard type: approx. 450mW
  • Sensitive type (only for 1 Form A): approx. 200mW
• Pick-up voltage and drop-out voltage specified per coil voltage with typical tolerances ±10%.

4. Mechanical and Environmental Characteristics

• Mechanical endurance: 6.1 million operations.
• Shock resistance: 980 m/s² destructive, 98 m/s² functional.
• Vibration resistance: 10 Hz to 5 kHz, 1.5 mm double amplitude.
• Humidity tolerance: 5% to 85% RH.
• Operating ambient temperature range: -40°C to +85°C.
• Termination: PCB pins.
• Unit weight: approx. 7 grams.
• Construction: plastic sealed or flux proofed.

5. Safety and Certification

• Certified to ISO9001, ISO14001, OHSAS18001 standards.
• UL and CUL approvals for 1 Form A and 1 Form C configurations.
• Contact materials and insulation meet Class F standards.

6. Ordering Information

• Type code format: JT33F - Voltage - Contact arrangement - Construction - Contact power type - Special code.
• Coil voltages: 3, 5, 6, 9, 12, 18, 24, 48 VDC.
• Contact arrangements: H = 1 Form A; Z = 1 Form C.
• Construction: S = Plastic sealed; Nil = Flux proofed.
• Contact power: L = Sensitive (only for 1 Form A); Nil = Standard.
• Special codes for customer-specific requirements after evaluation.
• Recommendations:
  • Use flux proofed types in clean environments free from contaminants like HS, SO, NO, dust.
  • Use plastic sealed types and validate in real applications for unclean environments.
  • Contact cleaning or surface processing during assembly should be suitable for the relay type.

7. Dimensions, Wiring, and PCB Layout

• Outline dimensions: 20.5 x 10.2 x 15.3 mm.
• PCB layout and wiring diagrams provided for 1 Form A and 1 Form C (bottom view).
• Pin dimensions refer to size before tinning; mounting hole sizes are recommended PCB hole sizes.
• Tolerances:
  • ±0.2 mm for outline dimensions ≤1 mm.
  • ±0.3 mm for outline dimensions around 1 to 5 mm.
  • ±0.4 mm for outline dimensions >5 mm.
  • PCB layout tolerance ±0.1 mm if not specified.
• Grid width: 2.54 mm.

8. Performance Curves and Test Conditions

• Maximum switching power endurance curves provided for coil temperature rise.
• Test conditions:
  • Standard: 5A at 70°C, mounting distance 10 mm.
  • Sensitive: 5A at 70°C.
  • Load: Resistive, 277VAC / 30VDC, 1s ON / 9s OFF cycle.
• Curves differentiate NO and NC contacts.

9. Important Notes and Disclaimer

• All data shown are initial values at room temperature unless otherwise specified.
• Only typical load specifications are listed; other load specifications available upon request.
• Specifications are for reference only and subject to change without notice.
• User responsibility to select suitable product for their application.
• Contact JINTIAN for technical service or queries.

Summary

The JT33F relay is a compact, high power subminiature relay designed for PCB mounting with 10A switching capability. It offers plastic sealed and flux proofed construction options, compliant with international standards and environmental regulations. The relay supports multiple coil voltages and contact configurations, with detailed electrical, mechanical, and environmental specifications provided. Users are advised to select the appropriate relay type based on environmental conditions and application requirements, with technical support available from the manufacturer.