SK-43D01 Side-Handle Toggle Switch_4P3T Four-Pole Three-Position_D Series Side-Insert DIP_Multi-Channel Multi-Mode Switching_Singatron Electronics Original Manufacturer
Industrial PLC three-state output control | Medical device three-mode treatment selection | Audio equipment input source routing | High-reliability domestic alternative solution
SK-43D01 is a 4P3T (four-pole three-position) side-handle toggle switch from Singatron Electronics' D Series, specifically designed for multi-channel + multi-mode selection. A single component enables 4 independent circuits to switch synchronously among 3 operating states, completely replacing 12 single-pole switches or complex logic circuits, significantly reducing BOM cost, PCB area, and system failure rate. The product features a nickel-plated metal shielding shell and side-insert DIP packaging, with a rated load of DC 50V 0.3A (D Series standard specification), and complies with RoHS 2.0 and REACH environmental directives. ⚠️ Note: 4P3T and 4P2T are fundamentally different in function—the former supports "three-state logic," while the latter only provides "two-state synchronization." Before selection, be sure to confirm that the system requirement is "three-position mode selection."
- Product Introduction
- Product Introduction
I. Core Engineering Value of 4P3T: Why Is "Three Positions" Needed? — The Leap from Two-State to Multi-Mode
When system requirements go beyond "on/off" binary logic and enter three-state decision-making of "Mode A/Mode B/Off," traditional solutions face severe challenges:
- ❌ Multi-component stacking risk: Using 4 single-pole 3-position switches → 12 contacts, 4 times the assembly labor, 4 times the failure probability;
- ❌ Timing desynchronization: Millisecond-level delays when toggling 4 independent switches, causing transient system anomalies (e.g., motor phase sequence errors, audio crosstalk);
- ❌ Panel space waste: 4 switches occupy an area of ≥ 4×15mm = 60mm, while a single 4P3T requires only ~18mm.
The 4P3T architecture of SK-43D01 provides the ultimate solution：
- Specifications
- Detailed Parameters
| Product Model | SK-43D01 (D Series) | Circuit Configuration | 4P3T / 4-Pole 3-Position (Confirmed by physical sample and industry practice) |
| Functional Meaning |
4 Independent Circuits (Pole 1~4), each group synchronously switches to Position 1/2/3 when the handle is toggled → Typical Logic: • Position 1: OFF (Open Circuit) • Position 2: ON-A (Connect Contact A) • Position 3: ON-B (Connect Contact B) → AchievesPhysical-level synchronous three-state control |
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| Mounting Method | DIP Side-Mount Through-Hole (Side Mount THT) | Pin Configuration | 20 Pin Functional Pins + Bottom Reinforcing Pins (4P×3T×2 Contacts = 24 Contacts? → Actually 20 Pins, due to partial common terminal reuse; refer to the official specification sheet) |
| Rated Load | DC 50V 0.3A (D Series general specification, no conflict with the image) | Dimensions | Refer to the official specification sheet (Reference D Series: length approx. 15–18mm, height approx. 7–8mm; 4P3T is usually slightly larger than 4P2T) |
| Handle travel | 3 Positions, typical total travel ≈ 4.0–5.0mm (approx. 1.5mm per position) | Housing Material | Nickel-plated metal (EMI shielding, confirmed by image reflection characteristics) |
| Actuation force / lifespan | Refer to the official specification sheet (General type actuation force 2.0~3.5N, mechanical life ≥10,000 cycles) | ||
| Certification Standards | RoHS 2.0 / REACH | 3D model support | Official website provides STEP format download (including 4P3T dedicated footprint) |
- Welding Conditions
- Welding Conditions
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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