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Interlink Electronics 30-49649
- Part Number:
30-49649
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- RoHs:
RoHS Compliant - Datasheet:
30-49649_Datesheet - Description:
SENSOR RESISTIVE 3US ANALOG
- In stock 2,018
30-49649 – Complete Datasheet Summary
FSR® 400 Series Round 5 mm Force-Sensing Resistor with Solder Tabs, 0.2 N – 20 N Range
1. Part-Number Identity
- Manufacturer: Interlink Electronics
- Model: 30-49649 (internal SKU)
- Device family: FSR® 400 Series – single-zone Force-Sensing Resistor
- Mechanical style: standard 5.08 mm Ø active circle, solder-tab termination
2. Quick Features
- Ultra-thin polymer thick-film construction (0.30 mm total)
- Actuation force from ~0.2 N; usable to 20 N (human-finger to palm pressure)
- Simple two-wire resistive output – ratiometric with force
- 10 million-cycle durability (1 kg, 4 Hz tap test)
- No EMI generation, ESD-insensitive, UL 94 V-1 materials, RoHS-compliant
3. Electrical Characteristics (TA = 25 °C)
| Parameter | Symbol | Min / Typ / Max | Unit | Condition |
|---|---|---|---|---|
| No-force resistance | Roff | >10 | MΩ | Force ≤0.1 N |
| 1 N resistance | R1N | ~30 | kΩ | Reference |
| 10 N resistance | R10N | ~1 | kΩ | Reference |
| 20 N resistance | R20N | ~250 | Ω | Reference |
| Force repeatability (single part) | — | ±2 | % | 1 kg load |
| Part-to-part repeatability (same batch) | — | ±6 | % | 1 kg load |
| Rise time | tr | <3 | µs | RL =1 kΩ |
| Long-term drift | — | <5 | % | 1 kg, 35 d, log-time |
| Power rating | Pmax | 1 | W | 25 °C continuous |
| Dielectric withstand | — | 500 | VAC | 1 min, no breakdown |
4. Mechanical Specifications
| Parameter | Value |
|---|---|
| Active sensing area | Ø 5.08 mm (0.200″) |
| Overall length (inc. tabs) | 20 mm (0.79″) |
| Overall width | 7.6 mm (0.30″) |
| Thickness | 0.30 mm ±0.03 mm (0.012″ ±0.001″) |
| Switch travel (to contact) | ~0.05 mm |
| Actuation force window | 0.2 N – 20 N (dependent on interface) |
| Operating temperature | –40 °C … +85 °C |
| Storage temperature | –25 °C … +85 °C |
| Humidity drift | +30 % R change after 240 h 85 °C / 95 % RH |
5. Solder-Tab Detail
- Material: tin-plated copper, 0.25 mm thick
- Length: 6 mm exposed (fits standard 2.54 mm pitch header)
- Hole diameter: 0.8 mm (accepts 20-24 AWG wire or M1.2 screw)
- Hand-soldering: 300 °C max, 3 s dwell – keep iron tip >2 mm from sensor body
- Reflow: not recommended (polyester substrate ≤ 0.3 mm) – use hand or selective wave
6. Typical Interface Circuit
Simple voltage-divider gives force-to-voltage conversion:VOUT = V+ · RM / (RM + RFSR)
Choose measuring resistor RM ≈ 10 kΩ for 0–5 V swing with 5 V supply.
Add 100 nF across RM to filter 50/60 Hz pickup when human touch is expected.
7. Application Ideas
- Human-interface touch pads (volume controls, appliance keys)
- Medical compression cuffs – detect limb pressure
- Robotics grip-force limiting
- White-goods lid or door closure sensing
- Hand-tool trigger force profiling
8. Durability & Reliability Data
| Test | Result |
|---|---|
| 10 million taps | –5 % avg. resistance change (1 kg, 4 Hz) |
| Standing load 2.5 kg, 24 h | –5 % avg. change |
| Cold start –40 °C, 1 h | –10 % change |
| Hot 85 °C, 1 h | +10 % change |
| ESD (HBM) | not sensitive |
| EMI | none generated |
9. Packing Information
- Bulk: 50 pcs antistatic pouch, 500 pcs per carton
- Label: Interlink part-no., RoHS, date-code, resistance @ 1 kg bin (optional)
10. Related / Alternative Parts
- 34-00007: same sensor, no contacts
- 34-00011: with female crimp contacts
- 34-44001: with contacts + 2-pin housing
- 402 series: 13 mm Ø for higher force / larger contact
- All parameters compiled from Interlink FSR 400-Series datasheet PDS-10004-C – verify on current revision before production.
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