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30-Pack 100KΩ NTC 3950 Thermistors (±1% @25°C) with 1-Meter Shielded Cable
Precision thermal sensing for 3D printers, IoT, robotics, consumer & industrial electronics
When your design depends on stable thermal feedback, sensor accuracy and wiring quality matter. This 30-pack of 100KΩ NTC 3950 thermistors pairs tight tolerance elements (±1% @25°C) with 1-meter PVC-jacketed, shielded leads (24AWG tinned copper), delivering low noise, robust connections, and repeatable readings across 3D printers, smart-home devices, drones, medical prototypes, and industrial control. RoHS 3 (2025) lead-free construction and IP40 ingress protection make it a dependable choice for labs and production alike.
🔧 Key Features
- Precision Thermal Sensing: 100kΩ NTC 3950, IEC 60751 Class B, ±1% at 25 °C reference.
- Industrial-Grade Cable: 1 m PVC jacket, shielded, 24AWG tinned copper conductors for stable signals.
- Standardized Accuracy: β-value tolerance ±1% (25 °C), ensuring predictable curves in firmware/PIDs.
- RoHS 3 (2025) Compliant: Lead-free, hazardous-substance safe for modern compliance needs.
- IP40 Protection: Basic dust protection for indoor and enclosure-mounted applications.
📋 Technical Specifications
| Thermistor Type | NTC 100kΩ (3950K), IEC 60751 Class B |
| Tolerance @25 °C | ±1% |
| Cable | 1 m PVC jacket, shielded, 24AWG tinned copper |
| Ingress Protection | IP40 (indoor/enclosed use) |
| Pack Size | 30 sensors |
| Compliance | RoHS 3 (2025), lead-free construction |
🌍 Where These Shine
- 3D printers/CNC: Hotend & heated bed sensing; consistent PID tuning.
- IoT & smart-home: HVAC, battery packs, environmental monitors.
- Drones/robotics: ESC/motor/FPV thermal monitoring with low noise leads.
- Medical prototypes: Benchtop devices needing reproducible thermal feedback.*
- DIY & education: Lab builds, development boards, and PCB integrations.
*Always verify regulatory requirements for clinical/production use.
🏆 Brand Snapshot
Serving 1,000+ clients with 95% 5-star ratings, ranked Top 10 in Amazon’s PCB category, and achieving 200% year-over-year growth—a proven choice for engineers and makers seeking reliable thermal components.
🛠️ Integration Tips
- Match firmware tables: Select the 100K 3950 curve (e.g., Marlin/RepRap) for correct temperature mapping.
- Route smart: Keep leads away from high-EMI sources (stepper drivers, PSU) even though cable is shielded.
- Secure mechanically: Use crimps/thermal paste and strain relief at hotends/beds for repeatable contact.
- Calibrate: Validate readings at two points (e.g., ambient & boiling water) to confirm system accuracy.
✅ Pros & ❌ Considerations
- Tight ±1% tolerance at 25 °C
- Shielded 1 m cable minimizes noise
- RoHS 3 compliant, lead-free
- 30-pack value for labs/production
- Widely supported β-curve (3950)
- IP40: not for harsh outdoor use
- May require soldering/terminals
- Confirm firmware curve selection
🔍 Final Verdict
For engineers, makers, and educators who need accurate, consistent, and compliant thermal sensing, this 30-pack 100KΩ NTC 3950 set with shielded 1-meter leads delivers excellent value and integration ease. Drop them into your 3D printers, IoT nodes, and control systems with confidence.