B4B-PH-K-S(LF)(SN)
Manufacturer
Model
B4B-PH-K-S(LF)(SN)
Category
The JST B4B-PH-K-S(LF)(SN) is a 4-pin PH series connector designed for reliable wire-to-board connections in industrial and consumer electronics applications. Its 2mm pitch, 2A current rating, and UL94V-0 certification make it suitable for control systems and automotive interiors. Proper soldering techniques and thermal management are critical to maintain performance. While offering high reliability and RoHS compliance, its voltage limitation and cost position it as a premium solution for specific high-reliability requirements.
Reference Pricing
Reference Stock
Specifications
| Electrical Performance | Not specified |
| Interface Type | S4B-PH-K-S |
| Material | Phosphor bronze, tin-plated (reflow treatment) |
| Operating Temperature Range | Not specified |
| Pins | 4 |
| Pitch | 2.54mm |
| Welding Method | Not specified |
Function And Role
Core Function
Provide a 4-pin wire-to-board connection with secure mechanical and electrical integrity
Key Characteristics
- 4P Brass contacts
- Tin plating for corrosion resistance
- 2mm pitch spacing
- UL94V-0 flammability rating
- PA66 plastic housing
Application Domains
Basic Scenarios
- Consumer electronics assembly
- Industrial control panel wiring
- Automotive interior systems
Extended Scenarios
- Medical device connectivity
- Automotive under-hood environments
- Telecom infrastructure backplanes
Precautions
| Soldering | Maintain 280-300℃ soldering temperature for 3-5 seconds; use 60/40 rosin flux |
| Current Limit | Max continuous current 2A (surge 3A for 10s) |
| Voltage Limit | Operating voltage up to 100VDC |
| Thermal Management | Thermal impedance 0.3Ω/sqmm; derate 20% above 85℃ |
| Storage | Store in <10% relative humidity, -18℃ to 40℃ environment |
| Risk Warnings |
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Alternative Model Params
- Contact material (Brass/Brass alloy)
- Plating thickness (1.5μm Tin)
- Operating temperature range (-40℃~+105℃)
- Pitch variation (1.25mm/1.5mm)
Design Recommendations
| Layout | Maintain 3mm radial clearances around connector body |
| Thermal | Implement 10W/mK thermal pad under PCB footprint |
| Compatibility | Verify with IPC-A-610G Class 2 standards |
| Testing | Conduct 5000 insertion cycles at 10Hz frequency |
Market Positioning
| Strengths |
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| Weaknesses |
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Datasheet
Assist inquiry
Distributors
Chuangxinwei Electronic (Shenzhen) Co., Ltd.
Shenzhen JiYuanTong Electronic Co., Ltd.
Shenzhen Hongkai Xuan Technology Co., Ltd.
Shenzhen Chengkai Electronic Co., Ltd.
Shenzhen Aotongxin Shi Ji Diànzǐ Yǒuxiàn Gōngsī
Shenzhen Bingcheng Technology Co., Ltd.
Shenzhen 8:30 Electronics Co., Ltd.
Shenzhen Shangheng Technology Co., Ltd.
Chengze Electronics (Beijing) Co., Ltd.
Shenzhen BoXinFa Technology Co., Ltd.
Braiic Technology (Shenzhen) Co., Ltd.
Shenzhen Chengyan Intelligence Technology Co., Ltd.
Shenzhen Songye Da Technology Co., Ltd.
Shenzhen Chaolongye Electronic Technology Co., Ltd.
Shenzhen Futian District Xinboyuan Electronic Trading Department
Shenzhen Futian District Dongyu Electronic Merchants
Shenzhen Ezze Electronics Co., Ltd.
Shenzhen Gaotai Trading Co., Ltd.
Shenzhen Lika Technology Co., Ltd.
Guangzhou Bestest Electronics Co., Ltd.
Shenzhen SiLian Mei Electronic Co., Ltd.
Shenzhen Haoruida Electronic Operation Department (Individual)
Shenzhen Hengdi Technology Co., Ltd.
Shenzhen Enrant Electronics Co., Ltd.
Shenzhen Ruikin Technology Co., Ltd.
Shenzhen Honglixin Electronic Co., Ltd.
Shenzhen Hamannni Electronic Co., Ltd.
Shenzhen He Rui Da Electronic Trading Co., Ltd. (Individual Proprietorship)
Shenzhen Huangshengda Technology Co., Ltd.
Shenzhen Meidafeng Technology Co., Ltd.