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BK13 Series

Product catalog summary

Overview: The BK13 Series is a hybrid FPC-to-board connector designed for high power supply capacity and space-saving applications. It features a 0.35mm pitch, stacking heights from 0.6 to 2.0mm, and a width of 1.9mm, supporting up to 5A through its power contacts.

Key Features:

High Power and Space Efficiency: Two power contacts support up to 5A, optimizing space by reducing signal contacts.
Robust Design: Armored guides prevent housing damage during mating.
Enhanced PCB Peeling Strength: Three soldering points per power contact improve strength.
Wide Stacking Height Variations: Offers flexible options for board design.
High Contact Reliability: Two-point contact design ensures reliability.
Superior Mating and Halogen-Free: Wide self-alignment range and halogen-free compliance.

Product Specifications:

Rated Current: Signal Contact: 0.3A (BK13C), 0.2A (BK13H); Power Contact: 5A.
Operating Temperature: -55 to +85°C.
Rated Voltage: 50V AC/DC.
Materials: Insulator made of LCP, contacts made of copper alloy with gold plating.

Performance and Testing:

Contact Resistance: Signal Contact: 50mΩ Max; Power Contact: 15mΩ Max.
Insulation Resistance: 50MΩ Min.
Withstanding Voltage: 150V AC for 1 min.
Mating Durability: 30 cycles without damage.
Vibration and Shock Resistance: No discontinuity or damage under specified conditions.
Humidity and Temperature Cycle Resistance: Maintains performance under specified cycles.

Product Number Structure: Indicates series name, number of power contacts, configuration, contact pitch, stacking height, terminal type, number of signal contacts, and packaging type.

Usage Precautions: Recommended solder temperature profile and handling instructions ensure optimal performance and reliability.

Specifications and Recommendations:

Nitrogen Reflow Process: Oxygen concentration should be at least 1,000ppm.
Manual Soldering Conditions: Iron temperature at 340±10℃, soldering time within 3 seconds.
Metal Mask Specifications: Thickness of 0.08mm with 100% aperture ratio.
PCB Warpage: Maximum of 0.02mm at connector center.
Cleaning: Not recommended due to potential performance changes.

Handling Precautions:

Avoid insertion or removal before board mounting to prevent deformation.
Support PCB with bolts or screws.
Avoid excessive prying during mating/unmating.
Use proper stiffeners on the FPC, such as glass epoxy or stainless steel.

Connector Mating and Unmating Precautions:

Align connectors using guide ribs for proper mating.
Ensure connectors are fully mated; if not, unmate and redo.
Unmate by pulling perpendicular to the surface; avoid stress on contacts.

General Considerations:

Review product specifications and drawings before use.
Contact Hirose for high reliability applications, such as automotive or medical instruments.
Specifications may change for improvements.

Catalog excerpts

Open the catalog to page 1

BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9mm Width, Hybrid FPC-to-Board Connector Supporting 5A Features 1. High Power Supply Capacity and Space-saving Design Equipped with two power contacts supporting up to 5A, the reduced number of signal contacts optimizes mounting space. Conventional Product (P=0.35mm) Signal 64pos. Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Power lines typically diverted to multiple signal contacts are concentrated into 2 power contacts (Up to 5A/line) Fully armored guides prevent housing damage due to misalignment when mating....

Open the catalog to page 2

BK13 Series / 0.35 mm Pitch, 0.6 to 2.0 mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A H15 BK13 Series / 0.35 mm Pitch, 0.6 to 2.0 mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A H15 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 4. Wide Stacking Height Variations The plug and receptacle combination allows flexible stacking height options, enhancing board design flexibility. - BK13C plug mates with the BK13C receptacle. - BK13H plug mates with the BK13H receptacle. O = Mass Production, A = Under Development...

Open the catalog to page 3

ms BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Note 1 : The total current capacity for the signal contacts is 12A Max. for BK13C, and 8A Max. for BK13H. Note 2 : Includes temperature rise caused by current flow. Note 3 : Range identified without condensation. Note 4 : The term “storage” refers to long-term-storage of unused items before they are mounted on the PCB. Operating temperature / humidity range applies to the product in a temporary storage state...

Open the catalog to page 4

Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. BK13 Series / 0.35 mm Pitch, 0.6 to 2.0 mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A H15 Refer to the chart below when determining the product specifications from the product number. Please select from the product numbers listed in this catalog when placing orders. Note 1 : r##j represents the number of signal contacts. Note 2 : Stacking height : 0.8, 1.3 and 2.0mm products are under development. Please contact Hirose for detailed information about pin variations.

Open the catalog to page 5

ms BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A Note 1 : The power contacts of BK13C06-6DP/2-0.35V have an embossed design. Note 2 : This connector has no polarity.

Open the catalog to page 6

BK13 Series / 0.35 mm Pitch, 0.6 to 2.0 mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A H15 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. • Recommended Metal Mask Dimensions (Mask Thickness : 0.08mm) Note : This connector has no polarity.

Open the catalog to page 7

ms BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A Note 1 : The power contacts of BK13C06-6DS/2-0.35V have a dimpled design. Note 2 : BK13C06-6DS/2-0.35V and BK13C06-10DS/2-0.35V have a metal reinforcement in the center of the product. Note 3 : This connector has no polarity.

Open the catalog to page 8

BK13 Series / 0.35 mm Pitch, 0.6 to 2.0 mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A H15 • Recommended PCB Layout • Recommended Metal Mask Dimensions (Mask Thickness : 0.08mm) Note : This connector has no polarity.

Open the catalog to page 9

ms BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A BK13H Plug (Stacking Height : 1.0, 1.5mm) ± 0.( swwwsa • Recommended PCB Layout 0.44 ±0.0? • Recommended Metal Mask Dimensions (Mask Thickness : 0.08mm) Note 1 : BK13C and BK13H have different recommended PCB layout. Note 2 : This connector has no polarity.

Open the catalog to page 10

Open the catalog to page 11

ms BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9 mm Width, Hybrid FPC-to-Board Connector Supporting 5A Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. o. • Recommended PCB Layout • Recommended Metal Mask Dimensions (Mask Thickness : 0.08mm) Note 1 : BK13C and BK13H have different recommended PCB layout. Note 2 : This connector has no polarity.

Open the catalog to page 12

BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9mm Width, Hybrid FPC-to-Board Connector Supporting 5A Usage Precautions 1. Recommended Solder Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Temperature Profile 4. Number of Reflow Cycles : 220℃ Min., within 60 seconds : Maximum of 2 cycles Note 1 : The temperature is the surface temperature of the PCB in the vicinity of the connector lead part. Note 2 : When using nitrogen reflow process, please mount the product with an oxygen concentration at a minimum of 1,000ppm. Please contact a Hirose representative...

Open the catalog to page 13

BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9mm Width, Hybrid FPC-to-Board Connector Supporting 5A Connector Handling Precautions 【Connector Mating Precautions】 Plug Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 1. Locate the guides and align the connectors to the appropriate mating position. The connector has guide ribs on the receptacle for proper mating alignment. Align the connectors with the guide ribs. Metal cover guide (Outside) Metal cover guide (Inside) 2. When the connector comes to the appropriate position, the connector will lower into place...

Open the catalog to page 14

BK13 Series / 0.35mm Pitch, 0.6 to 2.0mm Stacking Height, 1.9mm Width, Hybrid FPC-to-Board Connector Supporting 5A 【Connector Un- Mating Precautions】 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 1. It is recommended to remove the connector by pulling perpendicular to the connector mounted surface. However, unmating FPC-to-board connectors can become more difficult with higher pin count connectors and thinner FPCs. 2. If is difficult to remove the connector parallel to the mounting surface, remove it diagonally towards the pitch direction. Do not remove the connector...

Open the catalog to page 15

BK13 Series

BK13 Series

Catalog excerpts

All Hirose Electric Europe B.V. catalogs and technical brochures