BK11 Series

BK11 Series
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BK11 Series

Product catalog summary
Overview: The BK11 Series is a multi-power hybrid FPC-to-board connector with a 0.35mm pitch, 0.6mm stacking height, and 1.9mm width. It is designed for robust performance with a combination of main and sub power contacts.
Features:
  • Hybrid Type with Multi-Power Contacts: Includes 2 main power contacts (4A per pin) and 4 sub power contacts (2.5A per pin), supporting a total of 8A when used together.
  • Robust Design: Fully armored guides prevent housing damage during mating.
  • Enhanced PCB Peeling Strength: Three solder areas per main power contact increase strength.
  • Superior Mating Operability: Wide self-alignment range and tactile click for secure mating.
  • Halogen-Free: Complies with IEC 61249-2-21 standards.
Specifications:
  • Rated Current: Signal contact: 0.3A, Main power contact: 4A, Sub power contact: 2.5A.
  • Operating Conditions: Temperature: -55 to +85℃, Humidity: 20 to 80%.
  • Electrical Performance: Contact resistance: Signal 50mΩ max, Power 30mΩ max; Insulation resistance: 50mΩ min.
  • Durability: 10 mating cycles, vibration and shock resistance tested.
Materials and Finish: Insulator made of LCP, signal and power contacts are gold plated over nickel underplating.
Usage Precautions:
  • Recommended solder temperature profile includes a peak temperature of 250℃.
  • Manual soldering should be done at 340 ± 10℃ within 3 seconds.
  • Connector handling requires careful alignment and force application to ensure proper mating.
Connector Handling Precautions: Ensure proper alignment using guide ribs, apply force to complete mating, and avoid excessive prying during unmating to prevent damage.
Additional Notes: Specifications are subject to change for improvements. For high-reliability applications, contact Hirose for assurance.
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Catalog excerpts

BK11 Series-1

0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width Multi-Power Hybrid FPC-to-Board Connector Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. ES(2i@ P= 0.35mm Rower/Signal Full Armored

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BK11 Series-2

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 1. Hybrid Type with Multi-Power Contacts Conventional Hybrid ProductP=0.35mm Power 2pos. + Signal 42pos. Equipped with 2 main power contacts supporting 4A per pin and 4 sub power contacts supporting 2.5A per pin. Reduces the number of signal contacts to save mounting space. •Rated current - Main power contact : 2pos.(4A/pos.) - Sub power contact : 4pos.(2.5A/pos.) - Signal contact : 0.3A 9.95mm Adding 4pos. Sub Power Contacts...

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BK11 Series-3

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector 3. Enhanced PCB Peeling Strength Back Side of the Receptacle Both the plug and receptacle have 3 solder areas at each main power contact for greater PCB peeling strength. Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 3 Solder Areas on Each Main Power Contact Back Side of the plug 3 Solder Areas Enhance PCB Peeling Strength 4. Superior Mating Operability Wide self-alignment range with metal guides offers enhanced mating operation. (±0.23mm in width direction, ±0.32mm...

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BK11 Series-4

ms BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Note 1 : Includes temperature rise caused by current flow. Note 2 : 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 such as non-powered after mounting on the PCB during transportation, etc. Note 3 : Range identified without condensation. Materials / Finish Part Rated Current Refer...

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BK11 Series-5

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector H15 Plug Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. +i 12 ± 0.02 31 ± 0.03 • Recommended PCB Layout •Recommended Metal Mask Dimensions Note : This connector has no polarity.

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BK11 Series-6

ms BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector Receptacle Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. +i • Recommended PCB Layout • Recommended Metal Mask Dimensions Note : This connector has no polarity.

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BK11 Series-7

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector H15 Usage Precautions Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Recommended Solder Temperature Profile 1. Peak Temperature : Maximum of 250°C 2. Heated Section : 220C Min., within 60 seconds 3. Preheated Section : 150 to 180C, 90 to 120 seconds 4. Number of Reflow Cycles : 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...

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BK11 Series-8

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector Connector Handling Precautions 【Connector Mating Precautions】 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. W hen the connector comes to the appropriate position, the connector will lower into place as indicated...

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BK11 Series-9

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector 【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. I f is difficult to remove the connector parallel to the mounting surface, remove it diagonally towards the pitch direction. Do not remove the connector towards...

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BK11 Series-10

BK11 Series/0.35mm Pitch, 0.6mm Stacking Height, 1.9mm Width, Multi-Power Hybrid FPC-to-Board Connector While Taking into Consideration Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Specifications mentioned in this catalog are reference values. When considering to order or use this product, please confirm the Drawing and Product Specifications sheets. Use an appropriate cable when using the connector in combination with cables. If considering usage of a non- specified cable, please contact your sales representative. If assembly process is done by jigs & tools which...

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