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SunRod Miniature Cartridge Heaters
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Sun Electric Miniature Split-Sheath Heaters |
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Revolutionary Split Sheath Design - SunRod split sheath cartridge heaters feature a unique new construction that eliminates the failure points of conventional cartridge heaters. A continuous resistor is packed into the highest density insulation and and welded to the lead connections. Lead wires can be bent sharply without exposing the conductor, and exit through continuous insulation rated to 900°F. |
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Standard Features |
Optional Features |
- Lengths from ½” - Apply heat to the smallest space!
- Hot Tip - Excellent for heating instruments, probes
- Long Life - Split sheath expansion provides maximum heat transfer
- Easy Removal - Contraction of split sheath ensures slide out removal
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- Teflon Insulated Leads, 24 gage stranded nickle leads – Rated to 450°F
- Mica-Fiberglas Insulated Leads, 24 gage stranded nickle leads – Rated to 800°F
- Moisture Seal, RTV silicon rubber end seal – Rated to 450°F
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Specifications |
Size |
Diameter |
Min Length |
Max Length* |
Max Volts |
Max Amps |
1/8" |
.122" +/- .002" |
1/2" +/-3%, with a 3/32“ minimum |
6" +/-3%, with a 3/32“ minimum |
120 |
4 |
4mm |
.155" +/- .002" |
5/8" +/-3%, with a 3/32“ minimum |
6" +/- 3% with 3/32" minimum |
120 |
4 |
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Minimum Wattages by length @ 120 volts* |
Size |
1/2" |
3/4" |
1” |
1 1/2" |
2" |
1/8" |
100 |
70 |
50 |
30 |
25 |
Wattage Tolerances: |
For Heater lengths <= 3/4": +/- 20%
For Heater lengths > 3/4" : +10%/-15% |
Minimum Wattage at
12 Volts: multiply by .01 |
Minimum Wattage at
24 Volts: multiply by .04
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Minimum Wattage at
48 Volts: multiply by .18 |
Minimum Wattage at
240 Volts: multiply by 4.0 |
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Standard Lead Wires
#24 gauge insulated with Teflon / Fiberglas, rated to 482°F, 12" long
Teflon Insulated Leads
Slender and flexible, 24 gage stranded Nickel conductor, rated to 482°F
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Lead Wire Options
Non-standard length - One Inch to 20 feet
Solid Nickel Leads - 1/4" to 12" lengths available, Bare or with continuous Teflon jacket
SIT leads - rated up to 500°F (260°C). Max. 4A, 240V |
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Type SIT leads are a slender, continuous, flexible Teflon jacketed wire with no bulky splices. These lead wires simplify wire management in and around small devices. The leads are anchored in the heater, so they can be bent sharply where they exit the heater without exposing the conductor. Less than 1/16" of clearance is needed. Available in .032" and .045" in diameter, Type SIT leads require less than half the space of standard fiberglas insulated hookup wire.
Because they are silicone-free, they are suitable for use in clean-room environments and in ink-jet printers. SIT leads are rated for service up to 500 degrees F (260 degrees C). Maximum amperage capacity is 4 amps. Maximum voltage is 240 volts.
Typical Applications:
Semiconductor processing, Scientific instrumentation, Adhesive dispensing, packaging, Explosive & narcotics detection,Aircraft de-icing and air sampling |
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