SK-43D09 Side-Handle Toggle Switch_4P3T Four-Pole Three-Position_D Series Ultra-Compact Side-Insert DIP_Multi-Mode Synchronous Switching for Micro Devices_Sinyin Electronic Original

Extreme space layout for embedded modules | Three-state signal routing for portable devices | Multi-mode selection for medical wearable devices | High-reliability domestic alternative solution

SK-43D09 is a 4P3T (four-pole three-position) side-handle toggle switch from Sinyin Electronic' D Series ultra-compact lineup, designed for multi-channel three-mode synchronous control in extreme spaces. A single component integrates 4 independent circuit groups with 3 working states (e.g., OFF → A → B), replacing 12 single-pole switches, significantly reducing BOM cost, PCB area, and system complexity. The product features a nickel-plated metal shielding shell and side-insert DIP packaging, with a rated load of DC 50V 0.3A (directly marked on the drawing), and complies with RoHS 2.0 and REACH environmental directives. ⚠️ Note: Width is only 6.0mm (industry minimum), making it the narrowest 4P3T side-insert switch currently available from Sinyin Electronic. Strictly avoid mixing it with standard-width models such as SK-43D03.

Product Introduction
Product Introduction

I. Core Value of Ultra-Compact 4P3T: Integrating Four-Channel Three-Mode Logic Within 1cm²

When device space is compressed to the limit (e.g., wearable devices, micro sensors, smart patches), traditional 4P3T switches (width ≥9.4mm) become a design bottleneck. The SK-43D09 achieves the following through innovative structural design:

Specifications
Detailed Parameters
Product Model SK-43D09 (D Series - Ultra-Compact) Circuit Configuration 4P3T / 4 Pole 3 Position (Confirmed via Drawing and Physical Sample)
Core Features Ultra-Compact Width Design (6.0 mm) —— Singatron Electronics' Narrowest 4P3T Side-Insert Switch, 3.4mm Narrower Than SK-43D03
Mounting Method DIP Side-Mount Through-Hole (Side Mount THT) Pin Configuration 20 Pin Functional Pins + Bottom Reinforcement Pins (4P×3T, COM terminal multiplexed design; refer to the specification sheet for details)
Dimensions 23.0 × 6.0 × 7.5 mm (Drawing Front View, **Industry's Narrowest Width**) Handle travel 2 TRAVEL (≈2.0mm)
Rated Load DC 50V 0.3A(Directly noted at bottom of drawing) Housing Material Nickel-Plated Metal (EMI Shielding, Confirmed in Drawing Structure)
Weight ≈0.8g (Ultra-Lightweight Design) Mechanical Lifespan ≥8,000 Cycles (Compact Structure Optimized Spring Life)
Certification Standards RoHS 2.0 / REACH 3D model support STEP Format Download Available on Official Website (Including Ultra-Compact Package)
Welding Conditions
Welding Conditions
Manual soldering

Use a 30-watt soldering iron, with the tip temperature not exceeding 350 °C, and a soldering time of 3 seconds.


◆ Wave soldering / reflow soldering

Peak temperature shall not exceed 260°C, and soldering time shall not exceed 5 seconds (refer to the soldering temperature profile below).

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