Cement Resistors (SQ)
Low-cost Ceramic Encased Cement Resistors Suit High Volumes and High Temperatures.
DeMint Electronics offers commercial grade ceramic-housed power wirewound and film resistors. For medium to high rated power (2W...50W), SQ resistors provide full electrical insulation mounted in a ceramic case.
Axial, radial, vertical styles and several mounting techniques of wire leads or quick disconnects are available from DeMint's SQP, SQM, SQZ, and SQH.
The SQ series power resistors feature ideal specifications for high volume and high-temperature applications. Frequently used in power supplies, motor controllers, and automotive applications, these products can be custom tailored to individual needs.
With the extended resistance range and high-temperature rating, the resistors can be specified for operation in harsh environments. The SQ series wirewound resistors feature a resistance range from 0.1Ω to 3KΩ, while the SQ series power film resistors have a resistance range of 80Ω to 150KΩ.
Standard tolerances for both devices are to ±5%, with TCRs of ±300ppm/°C and above. DeMint is equipped to design and produce custom components to meet many design and reliability demands. Contact us with your specific needs.
Download complete (SQ) specification - Ceramic Encased Cement Resistors.
- Low cost, space saving
- RoHS compliant with 100% lead free
- DeMint mounting on printed circuit board
- Circuit board lock-in mounting tabs available
- High performance for power required applications
- High power to size ratio, Special inorganic potting compound
- Ceramic case provide high thermal conductivity in a fireproof package
- Power supplies
- Voltage dividers
- Motor controllers
- Automotive applications
- Power electronics circuits
| Dimensions (SQP) | |||||||
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| Type | Dimension (mm) | Resistance Range (Ω) | |||||
| SQP | W±1 | H±1 | L±1.5 | d±0.05 | SQP | RS+SQP | |
| 2W | 7 | 7 | 18 | 0.5~0.6 | 0.1~82 | ||
| 3W | 8 | 8 | 22 | 0.7~0.8 | 0.1~180 | 181~33K | |
| 5W | 10 | 9 | 22 | 0.7~0.8 | 0.1~180 | 181~50K | |
| 7W | 10 | 9 | 35 | 0.7~0.8 | 0.1~430 | 431~50K | |
| 10W | 10 | 9 | 48 | 0.7~0.8 | 0.1~470 | 471~50K | |
| 15W | 12.5 | 11.5 | 48 | 0.7~0.8 | 0.5~600 | 601~150K | |
| 20W-25W | 14 | 13.5 | 60 | 0.7~0.8 | 0.8~1K | 1.1~150K | |
| Dimensions (SQM) | ||||||
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| Type | Dimension (mm) | Resistance Range (Ω) | ||||
| SQM | H±1.5 | W±1 | S±1 | SQM | RS+SQM | |
| 2W | 20 | 12 | 8 | 0.1-8.0 | 81-50K | |
| 3W | 25 | 12 | 8 | 0.1-180 | 181-50K | |
| 5W | 25 | 13 | 9 | 0.1-180 | 181-50K | |
| 7W | 39 | 13 | 9 | 0.1-430 | 431-47K | |
| 10W | 51 | 13 | 12 | 0.1-470 | 471-47K | |
| 10WS | 35 | 16 | 12 | 0.1-430 | 431-47K | |
| Dimensions (SQT) | |||||||
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| Type | Dimension (mm) | Resistance Range (Ω) | |||||
| SQT | H±1.5 | W±1 | L±1 | t±1 | SQT | RS+SQM | |
| 3W | 9 | 10 | 22 | 1.5 | 0.1-180 | 181-50K | |
| 5W | 9 | 10 | 22 | 1.5 | 0.1-180 | 181-50K | |
| 7W | 9 | 10 | 35 | 3.0 | 0.1-430 | 431-47K | |
| 10W | 9 | 10 | 48 | 3.0 | 0.1-470 | 471-47K | |
| Dimensions (SQH) | ||||||||||||
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| Type | Dimension (mm) | Resistance Range (Ω) | Max Working Voltage |
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| SQH | W±1 | H±1 | L±1.5 | P±1 | H1±1 | D±0.5 | P1±0.2 | P2±0.2 | SQH | RS+SQH | ||
| 10W | 10 | 9 | 48 | 32 | 21 | 5 | 2.5 | 2 | 0.1~500 | 500~50K | 500V | |
| 15W | 12.5 | 11.5 | 48 | 32 | 21 | 5 | 2.5 | 2 | 1~1K | 1K~150K | 600V | |
| 20W | 14.5 | 13.5 | 60 | 43 | 24 | 6 | 3.0 | 2.5 | 1~2K | 2K~150K | 700V | |
| 30W | 19 | 19 | 75 | 56 | 29 | 6 | 3.0 | 2.5 | 1~2K | 700V | ||
| 40W | 19 | 19 | 90 | 67 | 29 | 6 | 3.0 | 2.5 | 2~3K | 700V | ||
| 50W | 19 | 19 | 90 | 67 | 29 | 6 | 3.0 | 2.5 | 2~3K | 700V | ||
| Dimensions (SQZ) | |||||||||||||
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| Type | Dimension (mm) | Resistance Range (Ω) | |||||||||||
| SQZ | L±1.5 | W±1 | H±1 | P±1.5 | P1 | P2 | P3 | P4 | H1±1 | H2±1 | SQZ | RS+SQZ | |
| 5W | 25(28) | 10 | 10 | 9.5(15) | 4.2 | 2 | 5 | 1.5 | 25 | 10.5 | 0.1-130 | 131-50K | |
| 7W | 36 | 10 | 10 | 20 | 4.2 | 2 | 5 | 1.5 | 25 | 10.5 | 0.1-430 | 431-50K | |
| 10W | 48 | 10 | 10 | 32 | 4.2 | 2 | 5 | 1.5 | 25 | 10.5 | 0.2-470 | 471-50K | |
| 15W | 48 | 12.5 | 12 | 32 | 4.2 | 2 | 5 | 1.5 | 26 | 10.5 | 1-600 | 601-150K | |
| 20.25W | 60 | 15 | 13 | 42 | 7 | 6 | 10 | 2.7 | 36 | 15.0 | 1-1K | 1.1K-150K | |
| Electrical Performance (SQ) | ||
| TEST ITEMS | CONDITION | SPEC. |
| Resistance Temp Coeff. | -30°C~ 200°C | ±300ppm / °C |
| Short Time Over Load | 2.5 times of rated wattage for 5 sec. | ±2 % |
| Rated Load | Rated wattage for 30 min. | ±1 % |
| Voltage Withstanding | 800 v AC 1 min. | no charge |
| Temp. Cycle | -30°C~ 85°Cfor 5 cycles | ±1 % |
| Load Life | 70°Con-off cycle 1000hrs. | ±5 % |
| Moisture-proof Load Life | 40°C95% RH on-off cycle 500 hrs. | ±5 % |
| Incombustibility | 16 times of rated wattage for 5 min. | not flammed |
| Order Codes (SQ) | ||||||||||||||||||||||||||||||||
| SQP | 5W | 100R | J | P | ||||||||||||||||||||||||||||
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