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• Get a Quote / Request Sample (complete connector set sample output within 45 days)
• Contact Sales: (86)-769-85449875 | info@konnra.com
• Domestic Replacement / Cross-Reference Lookup (JST, HIROSE, Molex, YEONHO equivalents)
• Customer Joint R&D Customization Request
• Track Order / After-Sales Support (100% CCD visual inspection for automotive connector series)
• Company Address: No.6 Nanchang South Road, Chijiao, Wangniudun, Dongguan, Guangdong, China

Product Category Listings — 1.25mm Pitch Connector Family (JST 1.25 Equivalent & Cross-Reference Series)

1. KR1250 — MX1.25 Connector Family

   • Positioning: Standard 1.25mm pitch wire-to-board connector, cross-referenced to Molex MX1.25 series
   • Key Features: Housing 2P–16P; DIP 90°, DIP 180°, SMT 90°, SMT 180° configurations; terminal options included
   • Industry Adaptation: Consumer electronics

2. KR1251 — MX1.25 Free-Hanging Connector Family

   • Positioning: Free-hanging variant of the 1.25mm pitch connector, cross-referenced to Molex MX1.25 free-hanging series
   • Key Features: Housing 2P–16P; terminal options included
   • General-purpose application

3. KR1252 — MX1.25 In-Line Connector Family

   • Positioning: In-line 1.25mm pitch connector for medical device applications, cross-referenced to Molex MX1.25 series
   • Key Features: Housing 2P–16P; terminal options included
   • Industry Adaptation: Medical devices

4. KR1253 — MX1.25 Ultra-Thin Connector Family

   • Positioning: Ultra-thin 1.25mm pitch connector, cross-referenced to Molex MX1.25 ultra-thin series
   • Key Features: Housing 2P–20P; SMT 90° wafer configurations; terminal options included
   • Industry Adaptation: Consumer electronics, medical devices

5. KR1256 — DF13 1.25mm Connector Family

   • Positioning: Alternative 1.25mm pitch connector for industrial applications, cross-referenced to HIROSE DF13 series
   • Key Features: Single-row and dual-row housing configurations; DIP, SMT, and terminal options
   • Industry Adaptation: Industrial

Note on Platform Compatibility: KONNRA’s connector series are cross-referenced with JST, HIROSE, Molex, and YEONHO original manufacturer part numbers, allowing the 1.25mm pitch family above to serve as domestic replacement/functional-equivalent options for standard JST 1.25 and similar imported 1.25mm pitch connectors, with stable performance and controlled cost.

Educational Content Links

1. "1.25mm Pitch Connectors: Types, Working Principles, and Selection Guide"

   • Covers housing pin-count ranges (2P–20P), single-row vs. dual-row configurations, DIP vs. SMT mounting orientation (90°/180°), free-hanging vs. in-line vs. ultra-thin housing types, and terminal selection criteria for 1.25mm pitch connector families such as KR1250, KR1251, KR1252, and KR1253.

2. "JST 1.25 vs. Molex MX1.25 vs. HIROSE DF13: What’s the Difference?"

   • Compares cross-reference compatibility, housing configurations, and mounting options across the KR1250 series (Molex MX1.25 equivalent) and KR1256 series (HIROSE DF13 1.25mm equivalent) to help buyers identify the correct domestic replacement part.

3. "Wire-to-Board Connectors: Types, Working Principles, and Selection Guide"

   • General reference for choosing between wire-to-board series (KR1000, KR1259, KR1250, KR1256) based on pitch, current rating, and application environment.

4. "Domestic Replacement Connectors: Types, Working Principles, and Selection Guide"

   • Explains how KONNRA’s cross-referenced connector series (JST, HIROSE, Molex, YEONHO) support imported-part replacement while maintaining stable performance and controlled cost, using KR2017 as a reference case for material technology improvement in coastal and cold-area environments.

Company / Service Information (Footer)

• About KONNRA: Dongguan Konnra Electronics Co., Ltd., founded 2004, headquartered at No.6 Nanchang South Road, Chijiao, Wangniudun, Dongguan, Guangdong, China. National High-Tech Enterprise with 20+ years of connector R&D experience, 50+ connector R&D patents, and a CNAS laboratory equipped with 45+ sets of precision testing equipment.

• Quality Assurance: Managed under IATF16949 and ISO9001 quality systems; automotive connector series undergo 100% CCD visual inspection; 95%+ full intelligent visual CCD inspection coverage using imported Mitsubishi and Panasonic PLC control systems.

• Certifications: ISO9001, ISO14001, IATF16949, ISO45001:2018, ISO13485, IPC620, UL Product & Operational Safety Certifications, LV214, US CAR-2.

  

• Delivery Capability: Complete connector set sample output within 45 days; nationwide production bases (Dongguan Wangniudun, Dongguan Changan, Hunan Daoxian) prestock key materials to shorten delivery cycles.

• Global Presence: Headquarters in Dongguan, with offices in Beijing (North China), Chongqing (Southwest), Hunan (Central China), Shanghai and Kunshan (East China); 600+ employees; global cooperative clients including BYD, Volkswagen, and DJI.

• Terms and Conditions / Customer Joint R&D: KONNRA offers customer joint R&D customized parts (e.g., KR2026) for unique application scenarios where standard 1.25mm pitch or other connector parts cannot be used, with aligned development timelines and forward-looking cost-reduction planning.

• Contact: Phone (86)-769-85449875 | Email info@konnra.com | Address: No.6 Nanchang South Road, Chijiao, Wangniudun, Dongguan, Guangdong, China.

https://konnra.com/how-to-choose-jst-1-25mm-connectors-selection-guide-2026/
Dongguan Konnra Electronics Co., Ltd

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