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Mini 4P terminal connector

2.5mm pitch, the reliable choice for multi-scenario connections!

         In the signal and power transmission systems of electronic equipment, the stability of connectors directly determines product reliability.Guangdong Deco has been deeply engaged in the connector industry. Based on strict testing standards, we have developed the Small 4P (EI/Small 4P) series connectors, including core components such as terminals, housings, straight headers, right-angle headers, and high right-angle headers.All performance parameters are derived from actual measured data in the product approval documents, with no false specifications. We provide precise and secure connection solutions for equipment in multiple fields.

Small 4P  Core Parameters for Precise Matching 

Stability you can trust!

          The robust performance of the Small 4P series is backed by every set of traceable measured data, performing reliably from basic matching to extreme environmental endurance:

• Basic Performance： Rated voltage 250V AC/DCRated current: 3.0AContact resistance: ≤10mΩInsulation resistance: ≥1000MΩWithstands 1000V AC withstand voltage test for 1 minute without breakdown or arcing, fundamentally preventing leakage and signal attenuation.

• Electrical Compatibility：Supports AWG26#~18# wires, compatible with thin AWG26# signal wires and AWG18# power wires for enhanced flexibility.

• Environmental Endurance：Stable operation over a wide temperature range of -25℃~85℃.After 96 hours of high-temperature (85℃±2℃) and low-temperature (-25℃±2℃) testing, no visible damage and contact resistance ≤20mΩ.After 96 hours under steady damp heat (40±2℃, 90%~95% RH), insulation and withstand voltage performance remain reliable, adapting to complex indoor and outdoor working conditions.

Small 4P Full Series Component Analysis

Each part fulfills its duty to build a solid connection defense!

(I) Terminal: Core of Transmission, Stability First

         As the "bridge" for current and signal transmission, terminals are made of tinned brass, featuring excellent electrical conductivity and oxidation resistance, ensuring reliable contact even after long-term mating cycles.The tensile strength of crimped areas shows outstanding performance in testing:

• AWG22# wire: 40N MIN
• AWG24# wire: 20N MIN
• AWG26# wire: 15N MIN

         Secure and non-detaching under tensile test at ≤25 mm/min, fundamentally avoiding loose connections.After a 24-hour neutral salt spray test (5% NaCl), no rust, white spots or corrosion appear on the surface, ensuring long service life.

(II) Housing: Insulation & Protection, Precise Matching

      Housings are made of PA66 material with flammability class reaching UL94 V-0, providing excellent insulation performance and high mechanical strength.Key dimensions are precisely controlled; unmarked tolerances strictly follow industry standards(0–3 mm ±0.12 mm, 3–18 mm ±0.15 mm, etc.).Perfectly matched with terminals for smooth insertion and withdrawal.

      Verified by needle-flame test: no flame residue within 30 seconds after removing the needle flame, the underlay does not ignite, and no obvious burns, depressions or cracks on the surface, complying with V-0 requirements.

(III) Header: Multi‑style Adaptation, Flexible Installation

       The series includes three types of headers, all with tinned brass pins for excellent solderability:Immersion in a solder bath at 235℃±5℃ for 2–3 seconds, solderability ≥90%, no cold joints or pinholes, meeting various installation requirements.

• Straight Header (Type WV):Vertical mounting design, covering full specifications from 2P to 24P.Key dimensions are precise (e.g., 2P model: A=2.50 mm, B=5.00 mm), suitable for conventional wiring.

• Right‑angle Header (Type WR):Horizontal mounting structure to save vertical space.Max dimensions of 24P model controlled at 57.50 mm × 60.00 mm, ideal for compact devices.

• High Right‑angle Header (Type WRB):Heightened design optimizes wiring space for easy mating.Tested terminal retention force and pin retention force both reach 15N MIN, ensuring stable and secure connection.

(IV) Small 4P with Strict Testing: Fully Durable Under Multiple Challenges

       In addition to core performance, all models in the Small 4P series have passed numerous extreme tests with unquestionable durability:

1. Mechanical PerformanceStable performance after 50 mating cycles (10 cycles per minute).No loosening after mechanical vibration test(10–55 Hz, amplitude 1.5 mm; 55–500 Hz, acceleration 50 m/s², 2 hours each for X/Y/Z axes).Contact resistance ≤20 mΩ.

2. Temperature Cycling5 cycles of rapid change between -25℃ and 85℃ (0.5 hour per cycle).No appearance damage, insulation resistance ≥1000 MΩ.

3. Temperature Rise ControlMax temperature rise ≤30℃ at rated current, preventing high temperature from affecting equipment operation.

4. Environmental ComplianceComplies with RoHS Directive 2011/65/EU and its amendment (EU) 2015/863.No hazardous substances such as lead, cadmium or mercury detected, meeting environmental requirements.

Small 4P – Multi‑Scenario Adaptability

Empowering connection demands across all industries.

• Communication Equipment Auxiliary Circuits：For line connection of small communication modules; compact design saves installation space.

• Consumer Electronics Control Circuits：Internal wiring connection for audio, security equipment, etc., with precise adaptation for multi‑pin signal transmission.

• Automotive Electronics Auxiliary Modules：Low‑voltage line connection for vehicle auxiliary devices; wide temperature characteristics adapt to the in‑vehicle environment.

• Industrial Control Auxiliary Circuits：Line connection for PLCs, sensors, and motor drive modules; resistant to vibration and wide temperature environments.

Deco Manufacturing 

Technological Innovation & Quality Assurance

Strict Certifications Build a Quality Defense and Consolidate the Foundation for Development

          Deco Electric attaches great importance to the establishment of its quality management system.It has successively obtained the IATF 16949 international automotive quality management system certification and ISO 9001 quality management system certification, implementing standardized control over the entire process from raw material procurement to finished product delivery. Products have passed many international and domestic safety certifications including UL, RoHS, and REACH, ensuring stable performance in applications such as new energy charging piles and smart grids. In 2025, the company was awarded the connector industry standard Pioneer (Leader) certification, thanks to its outstanding performance in key indicators including terminal mating life and anti-electromagnetic interference.This marks that its product performance has reached an internationally advanced level.

→ Details of Relevant Qualifications/Environmental Certificates (Click here to view)

Deco Manufacturing

High Quality • Affordable Price • Excellent Value

            For more details about our mini EL terminals / connectors or to customize your dedicated connection solutions, please contact Guangdong Deco Electric Co., Ltd.Let us empower an intelligent future together with precision connection technology.