User Manual
19
Thermal Solutions Design Guide | Specifications subject to change
Overview
AP heaters are a high performance alternative to Minco’s standard 
polyimide heaters, allowing higher temperatures and watt  
densities. Minco’s unique ability to manufacture these heaters  
has prompted success in many high-temperature applications 
worldwide.
AP heaters must be factory mounted or clamped to heat sinks, 
and are only available as custom designs.
 • Thin, lightweight heaters allow you to apply heat where it’s 
needed ultimately reducing overall operating costs
 • Etched-foil heating technology provides efficient thermal 
cycling of samples for increased throughput
 • Low mass construction and factory lamination saves space 
and reduces cycle time
 • Custom profiling offers uniform thermal performance 
of heating output for improved processing yields and 
productivity
 • Maximum operating temperature of 260°C offers a higher 
temperature range than any other flexible film heater for 
maximum design flexibility
 • Turnkey assembly solutions can drastically reduce 
assembly time and provide lowest total cost of operation
 • Available in round, rectangular, and irregular shapes
 • Power ratings to 120 W/in² (18.60 W/cm²)
 • Resistant to most chemicals
 • Optional built-in temperature sensors
 • Contact Customer Sales for design assistance.
Typical applications
 • Semiconductor wafer processing
 • Heating of electronic components
 • Packaging, fusing, and splicing equipment
 • Medical diagnostic analyzers
Specifications
Temperature range: 
-200 to 260°C (-328 to 500°F).
With UL component recognition:  
-200 to 240°C (-328 to 464°F).
Leadwires: Stranded, PTFE insulated, AWG 30 to AWG 20.
Heater thickness: 
Over element: 0.012” (0.3 mm) max.  
Over leadwire terminations: 0.150” (3.8 mm) ref.
Dielectric strength: 1000 VRMS at 60 Hz for 1 minute.
Insulation resistance: 1000 megohms min. at 500 VDC.
Outgassing: 0.36% total mass loss, 0.01% collected volatile 
condensable material, per NASA-JSC.
Agency Approvals: UL recognition optional.
Maximum size: 22” x 45” (560 x 1145 mm).  
Consult Minco for larger size options.
Maximum resistance density: 1500 Ω/in² (233 Ω /cm²).
All-Polyimide (AP) Thermofoil Heaters
Flexible heaters provide uniform heat transfer to 260°C (500°F)
100
90
80
70
60
50
40
30
20
10
   25 50  75 100   125   150   175 200   225   250
Watts / in²
Operating Temperature (°C)
15.5
14.0
12.8
10.9
9.3
7.8
6.4
4.7
3.1
1.6
Watts / cm²
CLAMPED
FACTORY MOUNTED
All-Polyimide Heaters
Maximum Watt Density by Mounting Method 
2mil/50μm Polyimide










