Changsha Purple Horn E-Commerce Co., Ltd.
| Resistance @ 25℃ | 20Ω |
| Operating Temperature | -40℃~+200℃ |
| Pitch | 10mm |
| Tolerance | ±20% |
| Steady State Current (Max) | 4A |
| Diameter (φD) | 20mm |
| Thermal Time Constant | 1.88min |
| B Constant (25℃/50℃) | 3200K |
| Description | 20Ω ±20% 4A 3200K Through Hole,P=10mm NTC Thermistors RoHS |
| Mfr. Part # | NTC20D-20 |
| Package | Through Hole,P=10mm |
| Model Number | NTC20D-20 |
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Product Specification
| Resistance @ 25℃ | 20Ω | Operating Temperature | -40℃~+200℃ |
| Pitch | 10mm | Tolerance | ±20% |
| Steady State Current (Max) | 4A | Diameter (φD) | 20mm |
| Thermal Time Constant | 1.88min | B Constant (25℃/50℃) | 3200K |
| Description | 20Ω ±20% 4A 3200K Through Hole,P=10mm NTC Thermistors RoHS | Mfr. Part # | NTC20D-20 |
| Package | Through Hole,P=10mm | Model Number | NTC20D-20 |
The NTC Series Negative Temperature Coefficient Resistors are designed for applications where temperature sensing and control are critical. They exhibit a decrease in electrical resistance as ambient temperature increases.
Negative Temperature Coefficient Resistor
NTC Series
Ruilon (implied from URL)
| Model | Resistance () | Max. Steady State Current (A) | Residual Resistance () | Dissipation Factor (mW/C) | Thermal Time Constant (s) | Material Constant B (K) | Max. Allowable Operating Temperature (C) |
|---|---|---|---|---|---|---|---|
| NTC5D-5 | 5 | 1 | 0.35 | ~6 | ~20 | 2700 | 240V/120V |
| NTC8D-5 | 8 | 0.7 | 0.77 | ~6 | ~20 | 2700 | 240V/120V |
| NTC10D-5 | 10 | 0.7 | 0.77 | ~6 | ~20 | 2700 | 240V/120V |
| NTC20D-5 | 20 | 0.5 | 0.997 | ~6 | ~20 | 2800 | 240V/120V |
| NTC33D-5 | 33 | 0.5 | 1.88 | ~6 | ~20 | 2950 | 240V/120V |
| NTC3D-7 | 3 | 3 | 0.25 | ~10 | ~30 | 2700 | -40~+175 |
| NTC5D-7 | 5 | 2 | 0.28 | ~9 | ~30 | 2700 | -40~+175 |
| NTC8D-7 | 8 | 1 | 0.54 | ~9 | ~30 | 2700 | -40~+175 |
| NTC10D-7 | 10 | 1 | 0.62 | ~9 | ~30 | 2700 | -40~+175 |
| NTC12D-7 | 12 | 1 | 0.82 | ~9 | ~30 | 2700 | -40~+175 |
| NTC16D-7 | 16 | 0.7 | 1.00 | ~9 | ~30 | 2800 | -40~+175 |
| NTC20D-7 | 20 | 0.6 | 1.11 | ~9 | ~30 | 2800 | -40~+175 |
| NTC22D-7 | 22 | 0.6 | 1.1 | ~9 | ~30 | 2800 | -40~+175 |
| NTC33D-7 | 33 | 0.5 | 1.49 | ~9 | ~30 | 2950 | -40~+175 |
| NTC3D-9 | 3 | 4 | 0.12 | ~11 | ~35 | 2600 | -40~+175 |
| NTC5D-9 | 5 | 3 | 0.21 | ~11 | ~35 | 2700 | -40~+175 |
| NTC6D-9 | 6 | 2 | 0.32 | ~11 | ~35 | 2700 | -40~+175 |
| NTC8D-9 | 8 | 2 | 0.40 | ~11 | ~35 | 2700 | -40~+175 |
| NTC10D-9 | 10 | 2 | 0.46 | ~11 | ~35 | 2700 | -40~+175 |
| NTC12D-9 | 12 | 1 | 0.66 | ~11 | ~35 | 2700 | -40~+175 |
| NTC15D-9 | 15 | 1 | 0.80 | ~11 | ~35 | 2800 | -40~+175 |
| NTC16D-9 | 16 | 1 | 0.80 | ~11 | ~35 | 2800 | -40~+175 |
| NTC20D-9 | 20 | 1 | 0.88 | ~11 | ~35 | 2800 | -40~+175 |
| NTC22D-9 | 22 | 1 | 0.95 | ~11 | ~35 | 2800 | -40~+175 |
| NTC33D-9 | 33 | 1 | 1.12 | ~11 | ~35 | 2950 | -40~+175 |
| NTC50D-9 | 50 | 1 | 1.25 | ~11 | ~35 | 2950 | -40~+175 |
| NTC100D-9 | 100 | 0.8 | 3.02 | ~11 | ~35 | 3200 | -40~+175 |
| NTC120D-9 | 120 | 0.8 | 3.02 | ~11 | ~35 | 3200 | -40~+175 |
| NTC2.5D-11 | 2.5 | 5 | 0.10 | ~14 | ~50 | 2700 | -40~+175 |
| NTC3D-11 | 3 | 5 | 0.10 | ~14 | ~50 | 2700 | -40~+175 |
| NTC5D-11 | 5 | 4 | 0.16 | ~14 | ~50 | 2700 | -40~+175 |
| NTC8D-11 | 8 | 3 | 0.25 | ~14 | ~50 | 2800 | -40~+175 |
| NTC10D-11 | 10 | 3 | 0.28 | ~14 | ~50 | 2800 | -40~+175 |
| NTC12D-11 | 12 | 2 | 0.46 | ~14 | ~50 | 2800 | -40~+175 |
| NTC15D-11 | 15 | 2 | 0.47 | ~14 | ~50 | 2800 | -40~+175 |
| NTC16D-11 | 16 | 2 | 0.47 | ~14 | ~50 | 2800 | -40~+175 |
| NTC20D-11 | 20 | 2 | 0.51 | ~14 | ~50 | 2950 | -40~+175 |
| NTC22D-11 | 22 | 2 | 0.56 | ~14 | ~50 | 2950 | -40~+175 |
| NTC33D-11 | 33 | 1.5 | 0.67 | ~14 | ~50 | 2950 | -40~+175 |
| NTC47D-11 | 47 | 1.5 | 1.02 | ~14 | ~50 | 2950 | -40~+175 |
| NTC50D-11 | 50 | 1.5 | 1.02 | ~14 | ~50 | 2950 | -40~+175 |
| Item | Specification | Test Conditions & Methods |
|---|---|---|
| Rated Zero-Power Resistance RN () | RN 20% | Ambient temp. Range: 25C2C (TA). Testing voltage: 1.5VDC. After placing for 1~2 hours under TA, the resistance value shall be measured. |
| Thermal Dissipation Constant (mW/C) | See the main technical parameter list | The thermal dissipation constant () could be calculated by the ratio of a change in power dissipation (P) of the thermistor to a change in temperature (T) of the thermistor at a specified ambient temperature. |
| Thermal Time Constant T (s) | See the main technical parameter list | The time (t) shall be measured within which the temperature is reached at 63.2% of the ambient temperature change under zero power condition. |
| Material Constant B | B=T1T2/( T2- T1) x Ln(R1/R2) | R1, R2 is zero-power resistance at T1, T2. T1=298.15 K(25C), T2 = 323.15 K(50C). |
| Max. Steady State Current (A) | See the main technical parameter list | Ambient temperature: 25C2C. Testing Time: min 100h. |
| Temp. Cycling Testing | No visible mechanical damage. RN / RN 20% (RN = | RN-RN' | ) | Ta: -403C/ 30min252C/ 5minTb:2003C/30min252C/ 5min. Cycles: 5 times. After recovering 4~5 h under 252C, the rated zero power resistance value RN' shall be measured. |
| Electrical Cycling Testing | No visible mechanical damage. RN / RN 20% (RN = | RN-RN' | ) | Ambient temp. Range: 25C2C. Cycles: 1,000 times. On / Off: 1m / 5m. Test Current: Max. steady state Current. After recovering 4~5h under 252C, the rated zero power resistance value RN shall be measured. |
| Load Life (Endurance) Testing | No visible mechanical damage. RN / RN 20% (RN = | RN-RN' | ) | Ambient temp. Range: 25C2C; Max. steady state Current/ 1,0004h. After recovering 4~5 h under 252C, the rated zero power resistance value RN' shall be measured. |
| Humidity Testing | No visible mechanical damage. RN / RN 20% (RN = | RN-RN' | ) | Ambient temp. range : 40C2C, R.H.: 933%, Energized time:100024 h. After recovering 4~5 h under 252C, the rated zero power resistance value RN' shall be measured. |
| Item | Specification | Test Conditions & Methods |
|---|---|---|
| Solder-ability | The terminals shall be uniformly tinned, and its area 95% | Dipping the NTC terminals to a depth of 15mm in a soldering bath of 240-245C and to the place of 6mm far from NTC body for 2-3s (See IEC68-2-20 /GB2423.28 Ta ). |
| Resistance To Soldering Heat | No visible mechanical damage. RN/RN 20% (RN = | RN-RN' | ) | Dipping the NTC terminals to a depth of 15mm in a soldering bath of 265+5C and to the place for 6mm below from NTC body for 10+1s. After recovering 4-5h under 25+2C. The rated zero power resistance value RN' shall be measured. (See IEC68-2-20 /GB2423.28 Tb). |
| Strength of lead terminal | No break out RN/RN 20% (RN = | RN-RN' | ) | Fasten the body and apply a force gradually to each lead until 10N and then keep for 10sec. Hold body and apply a force to each lead until 90 slowly at 5N in the direction of lead axis and then keep for 10sec, and do this in the opposite direction repeat for other terminal. After recovering 4~5h under 25+2C, the rated zero power resistance value RN shall be measured. (See IEC68-2-21/GB2423.29 Ua / Ub). |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
300~500
Ecer Certification：
Verified Supplier
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...
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