Miniature Circular Waterproof Shielded Connector (Bayonet Lock Type), LF Series

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Sales of products currently in stock may be temporarily suspended in the future depending on their availability.
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Product Description
Small, circular, waterproof connectors with a structure that makes shielded connections and connector assembly easy.
[Features]
·The shielded wire of the cable can be easily connected to the connector shell by fixing the metal fitting attached to the connector to the outer skin of the cable.
·The waterproof structure is IP67 and IP68 in the mated state.
·It has a simple structure without using machine screws for the connector.
·The lock has good operability and is strong against vibration.
·The 4-core is 10 A and complies with the international safety standard (TÜV).
·In addition, 3 cores and 4 cores have acquired UL standard.
[Applications]
·Convenient for various wiring.
Circular Connector For Easy Shielded Terminations and Connector Assembly

Easily removable type
Specifications of LF Series Miniature Circular Waterproof Shielded Connectors (Bayonet Lock Type)
Product Standards
| Rating | Rated voltage | 3-contacts | 125 V AC, 175 V DC |
|---|---|---|---|
| 4-contacts | 125 V AC, 125 V DC | ||
| 6-, 12-, 20-contacts | 30 V AC, 42 V DC | ||
| 11-contacts | 4-contacts: 125 V AC, 125 V DC, 7-contacts: 30 V AC, 42 V DC | ||
| Rated Current | 3-Contacts | 5 A | |
| 4-contacts | 10 A | ||
| 6-, 12-, 20-contacts | 2 A | ||
| 11-contacts | 4-contacts: 10 A, 7-contacts: 2 A | ||
| Operating Temperature Range | -25°C to +85°C | ||
| Storage temperature range | -10°C to +60°C | ||
| Item | Standard | Conditions | ||
|---|---|---|---|---|
| 1. Contact resistance | 3-, 6-, 12-, 20-contacts | 15 mΩ or less | Measure at 1 A DC | |
| 4-contacts | 5 mΩ or less | |||
| 11-contacts | 4-contacts: 5 mΩ or less, 7-contacts: 15 mΩ or less | |||
| 2. Insulation resistance | 1,000 MΩ or more | 3-, 4-contacts | Measure at 500 V DC | |
| 6-, 12-, 20-contacts | Measure at 100 V DC | |||
| 11-contacts | Measure at 500 V DC (4-contacts) or 100 V DC (7-contacts) | |||
| 3. Withstand voltage | There shall be no flashover or dielectric breakdown | 3-, 4-contacts | Apply 1,250 V AC for 1 min. | |
| 6-, 12-, 20-contacts | Apply 300 V AC for 1 min. | |||
| 11-contacts | Apply 1,250 V AC (4-contacts) or 300 V AC (7-contacts) | |||
| 4. Vibration resistance | There shall be no electrical discontinuity for 10 μs or greater | Test at Frequency 10 to 55 to 10 Hz, Single-amplitude: 0.75 mm 5 mins./cycle, Three-axial directions: 10 cycles each | ||
| 5. Shock | There shall be no electrical discontinuity for 10 μs or greater | Test at acceleration 490 m/s2, duration: 11 ms, 3 directions, 3 times each | ||
| 6. Mating cycle | 3-, 6-, 12-, 20-contacts | 30 mΩ or less | Measure contact resistance after 1,000 operations | |
| 4-contacts | 10 mΩ or less | |||
| 11-contacts | 4-contacts: 10 mΩ or less, 7-contacts: 30 mΩ or less | |||
| 7. Temperature cycle | 100 MΩ or more | Measure insulation resistance after testing at -55°C: 30 mins. > room temperature: 2 to 3 mins. > 85°C: 30 mins. > room temperature: 2 to 3 mins. total of 5 cycles | ||
| 8. Humidity resistance (steady state) | High humidity: 10 MΩ or more When dry: 100 MΩ or more | Measure insulation resistance after leaving at a temperature of 40°C and humidity of 90 to 95% for 96 hours | ||
| 9. Waterproofing | No water penetration inside connector | Leave at water depth of 1.8 m for 48 hours while mated with the connector | ||
Materials/Processing
| Part Name | Materials | Finish | Note |
|---|---|---|---|
| Exterior | Zinc alloy | Nickel plating | - |
| PPS resin (brown) | - | UL94V-0 | |
| Insulator | PPS resin (black) | - | UL94V-0 |
| Contacts | Copper alloy | Selective gold plating | (Base nickel plating) |
| Gasket | Chloroprene rubber (black) | - | - |
Compatible Cable Specifications (Reference)
| 3-Contacts | 4-Contacts | 6-Contacts | 12-Contacts | 20-Contacts | 11-Contacts | |||
|---|---|---|---|---|---|---|---|---|
| Conductor | Materials | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire |
| Strand diameter (mm) | ø0.18 | ø0.26 | ø0.16 | ø0.16 | ø0.16 | ø0.26 | ø0.16 | |
| Construction (Wire/mm) | 20 / ø0.18 | 20 / ø0.26 | 7 / ø0.16 | 7 / ø0.16 | 7 / ø0.16 | 26 / ø0.26 | 7 / ø0.16 | |
| Size (AWG) | #20 | #16 | #26 | #26 | #26 | #16 | #26 | |
| Cross-Sectional Area (mm2) | 0.5 | 1.25 | 0.14 | 0.14 | 0.14 | 1.25 | 0.14 | |
| Outer Diameter (mm) | ø0.98 | ø1.5 | ø0.48 | ø0.48 | ø0.48 | ø1.5 | ø0.48 | |
| Insulator | Outer Diameter (mm) | ø1.5 (standard) | ø2.1 | ø0.88 (standard) | ø0.9 | ø0.9 | ø2.1 | ø0.95 |
| Thickness (mm) | 0.26 | 0.3 | 0.2 | 0.21 | 0.21 | 0.3 | 0.24 | |
| Shield | Materials | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire | Tin plated soft copper wire |
| Density (%) | 85% | 80% or more | 85% | 80% or more | 80% or more | 80% or more | ||
| Outer Diameter (mm) | ø3.6 | ø5.5 | ø3.4 | ø4.2 | ø5.1 | ø6.7 | ||
| Sheath | Outer Diameter (mm) | ø5 ±0.2 | ø7.3 ±0.2 | ø5 ±0.2 | ø7.3 ±0.2 | ø8.7 ±0.2 | ø8.7 ±0.2 | |
Remarks: The cable satisfies required specifications for UL standards.
Note: Use a cable with a full interior. Using a cable with gaps in its interior could cause the cable clamping force and waterproof performance to deteriorate.
Product Outline Drawing And Dimensions

Diagram of mated state
Example: LF07 size

Diagram of shielded connection state

Diagram of lock structure
- When mating: After inserting the plug, rotate the sleeve in the direction indicated by the arrow
Sleeve / arrow / plug
- When un-mating: Rotate the sleeve in the opposite direction to the arrows and pull out the plug
| Number of Contacts | Current Capacity |
|---|---|
| 3 | 5 A |
| 4 | 10 A |
| 6, 12, 20 | 2 A |
| 11 | 10 A 2 A |
Rated Current

Plug

Dimensional drawing of plug

Receptacle / front panel mount type / solder type

Dimensional drawing of receptacle / front panel mount type / solder type

Jack

Dimensional drawing of jack
Dimensional Drawing of Receptacle Panel Mounting Hole

Dimensional Drawing of Receptacle Panel Mounting Hole
| Shell Size | A | B | Panel Thickness |
|---|---|---|---|
| LF07WBR-** | ø9.05 | 8.1 | 0.7 to 2 |
| LF10WBR-** | ø11.05 | 10.2 | |
| LF13WBR-** | ø14.05 | 13.1 | |
| LF10WBRB-** | |||
| LF13WBRB-** | ø17.05 | 16.1 | 0.7 to 4.8 |
Dimensions of receptacle panel mounting hole