Applications
Electric Motor Transformers
Features
Coated Thermistor chip with shrunk sleeve insulation
Multi strand PTFE-insulated leads of Copper wire
Options
Alternative resistance ratings
Custom Specifications
Rated temperatures and tolerances
Encapsulation (Options available on request)
E49 – Kynar Sleeve Shrunk
E26 – PTFE Sleeve Shrunk
Type of Lead (Options available on request)
KH – 26 AWG Silver Plated Copper Wire
KK – 24 AWG Silver Plated Copper Wire
KF – 28 AWG Silver Plated Copper Wire
GC – 30 AWG Single Strand Nickel Wire
Lower Temperature : -40°C
Upper Temperature : 140°C
Max Permissible Power at 25°C : 200 mW
Resistance Tolerance (ΔR/RN ) : ±0.5%, ±1%, ±2%, ±5%
Rated Temperature (TN) : 25°C
Dissipation factor in air(δth) : approx 5 mW/K
Thermal cooling time constant in air (τc) : ≈ 30s
Beta Tolerance (Δβ/βN) : ±1%, ±2%, ±3%,
Heat capacity (Cth) : ≈ 150 mJ/K
Electrical Data
Resistance At 25°C (Ω) |
Beta Value (25/85) (K) |
2000 |
3540 |
2057 |
3540 |
2100 |
3900 |
2800 |
3977 |
3000 |
3977 |
4700 |
3977 |
5000 |
3977 |
| 10000 | 3977 |
Resistance At 25°C (Ω) |
Beta Value (25/85) (K) |
20000 |
4000 |
30000 |
4050 |
47000 |
4100 |
49300 |
3960 |
50000 |
4100 |
100000 |
4400 |
170000 |
4250 |
Reliability Data
|
Test |
Standard | Test conditions |
ΔR25/R25 |
Remarks |
| Storage in dry heat |
IEC 60068-2- 2 |
Storage at upper category temperature T: 155 °C t: 1000 h |
< 2% | No visible damage |
| Storage in damp heat, steady state | IEC 60068-2-78 | Temperature of air: 40 °C Relative humidity of air: 93% Duration: 56 days | < 1% | No visible damage |
| Rapid temperature cycling | IEC 60068-2-14 | Lower test temperature: -55 °C Upper test temperature: 155 °C Number of cycles: 10 | < 2% | No visible damage |
| Endurance | Pmax: 200 mW t: 1000 h | < 2% | No visible damage | |
| Long-term stability (empirical value) | Temperature: 100 °C t: 10000 h | < 3% | No visible damage |
Part Number Identification
| PRODUCT SERIES CODE | RESISTANCE AT 25⁰C (10 X 10³ Ω) (10 KΩ) | RES.TOL | ENCAPSULATION | TYPE OF LEAD | WIRE GUAGE | TOTAL LENGTH 10 X 10² mm (1000 mm) | BETA (25/85) | CONNECTOR |
| STTS |
103 |
R5 |
E49 |
K |
H |
102 |
3977 |
C1 |
STTS *** R# E%% @@ $$$ &&&& C!!
*** = Resistance Value at 25°C (e.g. 102- 1000Ω, 201 -200Ω, 103 – 10kΩ)
# = Resistance Tolerance (eg. R1 – ± 1%, R5 – ±5%)
%% = Encapsulation (eg. E49 – Kynar Sleeve Shrunk)
@@ = Type of Lead (eg. KH, K – PTFE-insulated Multistrand Copper Wire & H – 26 AWG)
$$$ = Total Length in mm (eg: 251 – 250mm Length, 401 – 400 mm Length)
&&&& = Beta Value (eg:3977K, 3830K)
!! = Connector (eg: C1 – JST XHP-2 PIN)
