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BH12 Series

Product catalog summary

Overview
The BH12 Series is a compact, waterproof power/signal hybrid connector designed for micro-mobility and industrial applications. It supports high current up to 20A and features a lock lever design for enhanced cable wiring efficiency. The hybrid design reduces the connector's mounting space.

Features

Compact Design: Diameter of 13.8mm, supports 14 AWG cables, enabling a high current of 20A.
Hybrid Power/Signal Design: Combines power and signal, supporting Power 20Ax2pos and Signal 1Ax2pos configurations.
Waterproof Design: IPX6/IPX7 waterproof performance with weather-resistant rubber materials.
Lever Lock: Lock lever for easy wiring, preventing cable entanglement and damage.
Easy Cable Assembly: Side-insertion design for contacts, allowing short cable assembly without tools.
Mis-mating Prevention: Multiple guide keys ensure secure alignment and mating.
Lightweight: Weighs 7g, contributing to equipment weight reduction.
Mounting Options: Available in front and rear mount types, with right-angle power contacts for reduced panel height.

Specifications

Contact Resistance: 10mΩ Max for Power, 15mΩ Max for Signal.
Insulation Resistance: 1000MΩ Min at 500V DC.
Withstanding Voltage: 600V AC for 2 minutes.
Mating Durability: 30 cycles with specified resistance limits.
Vibration and Shock Resistance: No electrical discontinuity or damage under specified conditions.
Temperature Range: Operating from -40 to +105℃, storage from -10 to +60℃.
Rated Voltage: 30V AC, 42V DC for both power and signal contacts.

Materials and Finish
Components made from PBT and silicone rubber, with copper alloy contacts plated with tin.

Product Number Structure
Indicates series name, special features, connector type, number of positions, contact gender, and termination method.

Assembly and Tools
Use designated tools by Hirose for crimping to ensure warranty. Applicable cables are tin-plated stranded soft-copper wire. Crimp height is crucial for quality and varies with wire configuration.

Precautions
Follow the procedure manual for assembly and installation, ensuring correct torque to avoid damage. Confirm mated status by lightly pulling on the cable.

Handling and Installation Guidelines
1. Avoid forceful insertion, removal, impact, and pulling of cables to prevent deformation or damage to connectors.
2. During packing and storage, avoid excessive load on the spring portion of the plug insulation case.
3. Do not use damaged products as this may compromise waterproof performance.

Specifications and Usage Considerations
- Specifications in the catalog are reference values; review the Drawing and Product Specifications sheets before ordering or using the product.
- Use appropriate cables with connectors. Contact a sales representative if considering non-specified cables.
- Use only Hirose-identified jigs and tools for assembly to maintain product warranty.
- For applications requiring high reliability, contact Hirose for reliability assurance.

Note: This document is copyrighted by Hirose Electric Co., Ltd. as of October 2026.

Catalog excerpts

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector Overview The BH12 Series is a power/ signal hybrid connector ideal for the battery connection of micro- mobility applications. BH12 can also be used in other industrial applications as well. The BH12 Series is an IPX6/ IPX7 waterproof connector ( when mated) with lock lever design and enhances cable wiring efficiency. Additionally, the power/ signal hybrid design contributes to reducing connector occupied mounting space. Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Features 1. Compact connector...

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector 3. Waterproof Design Panel O-Ring IPX6/ IPX7 Waterproof Performance in the Mated State Mating O-Ring Water Penetration Route Waterproof Location IPX6 : Jet water of 100 L / min. in all directions from a distance of 3 m for 3 minutes in mated condition. IPX7 : At a depth of 1m for 30 min. ( IPX8 class is also available) Wire Seal Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. 4. Lever lock for easy wiring. The lock lever is locked in one action: simply push the plug straight into the receptacle....

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector 5. Easy cable assembly ①Push through materials The plug side utilizes Hirose' s original design of inserting the contacts to the case from the side. It can be used with an overall short cable assembly length and no tools are required. Power Wire Signal Wire Wire Seal Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Wire Seal Signal Contact Power Contact Signal Contact ③Insert into Contact Case Assembly possible regardless of contact direction. The contact is secured to the case and does not come...

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector H*5 BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector H*5 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Multiple guide keys for secure alignment and mating even in areas with poor visibility. The lightweight of 7g (plug+receptacle) contributes to equipment weight reduction as well as reduced power consumption of micro-mobility applications. 8. Both front and rear mount available The receptacle is available in both front and rear mount types for selection based on the...

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ms BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector Note 1 : Depends on the ambient temperature at which the connector is used. Note 2 : Includes the temperature rise due to current flow.

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector H*5 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. [Reference] Derating Curve Note 1 : The derating curve is derived from the basic curve multiplied by the derating factor of 0.8. Note 2 : The rated current varies depending on the ambient temperature at which the connector is used in. We recommend using it within the correction curve (dotted line). Note 3 : The measurement method of the derating curve is shown below. • Test specimen : BH12 unused prior to testing. • Test cable conductor cross...

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ms BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector Refer to the chart below when datermining the product specifications from the product number. Please select from the product numbers listed in this catalog when placing orders. Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved.

Open the catalog to page 8

BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector H*5 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. • 3pos. (Power 2pos. + Signal 1pos.) Part No. Note : The 3pos. plug mates with the 4pos. receptacle.

Open the catalog to page 9

ms BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Recommended Panel Mounting Dimensions (Recommended Panel Thickness : 6-7.5mm) Part No. Note : For 3pos. (power 2pos.+ signal 1pos.), insert only 1 signal contact.

Open the catalog to page 10

BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector H*5 Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Recommended Panel Mounting Dimensions (Recommended Panel Thickness : 6-7.5mm) Part No. Note : For 3pos. (power 2pos.+ signal 1pos.), insert only 1 signal contact.

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BH12 Series/20A Current, Compact, Waterproof Power/Signal Hybrid Connector ■Tools ・Use tools designated by Hirose when crimping. ・Crimping performed using tools other than those specified is outside the scope of warranty. ・The operating instructions are available for the crimping machine and the applicator. Be sure to carefully read the operating instructions manual before beginning work. ■Applicable Cables Oct.1.2026 Copyright 2026 HIROSE ELECTRIC CO., LTD. All Rights Reserved. Check that the cables to be used are within the applicable range. If you intend to use a cable other than those recommended,...

Open the catalog to page 15

BH12 Series

BH12 Series

Catalog excerpts

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