PTC Thermistors:
Type PTF
Description
PTC disc thermistor for overcurrent and short-circuit
protection
Features
• Low cost solid state fuse
• Available in a broad range of resistances,
transition temperatures and voltage ratings
• Exhibits large positive increases in resistance with
temperature
• Wide range of trip and non-trip currents; from
30mA to 2.3 amps
• Resistance/temperature characteristic is infi nitely
repeatable and has no hysteresis associated with
its action
• Proven quality and reliability over many years of
manufacture
• Standard options include protective coating and
tape and reeled to EIA RS-468A
GE
Sensing & Inspection Technologies
Over-current Protection
GE imagination at work
Operating
Voltage
R25°C
(±20%) Type
Minimum
Switch Current
Maximum
No-Switch Current “H”
Joules/°C
D.C.
mW/°C
A (max) B (max) C ref. AWG No.
0°C 25°C 25°C 55°C in. mm. in. mm. in. mm.
5 0.5 RL6505-0.5-110-5-PTF 2.32 2.07 1.40 1.02 0.8 18 0.70 17.8 0.16 4.1 0.33 8.4 20
12 1.0 RL5305-1.0-110-12-PTF 1.45 1.29 0.87 0.64 0.6 14 0.60 15.2 0.15 3.8 0.33 8.4 22
12 2.5 RL5305-2.5-110-12-PTF 0.92 0.82 0.55 0.40 0.6 14 0.60 15.2 0.16 4.1 0.33 8.4 20
12 5.0 RL4005-5.0-110-12-PTF 0.55 0.49 0.33 0.24 0.3 10 0.45 11.4 0.15 3.8 0.25 6.4 24
12 10.0 RL3005-10-110-12-PTF 0.32 0.29 0.19 0.14 0.2 7 0.35 8.9 0.15 3.8 0.25 6.4 24
12 25.0 RL3005-25-110-12-PTF 0.20 0.18 0.12 0.09 0.2 7 0.35 8.9 0.15 3.8 0.25 6.4 24
12 1.0 RL5004-1.0-120-12-PTF 1.40 1.25 0.87 0.67 0.4 12.0 0.59 15.0 0.14 3.6 0.25 6.4 24
12 2.5 RL3104-2.5-120-12-PTF 0.65 0.58 0.40 0.31 0.2 6.5 0.41 10.4 0.14 3.6 0.15 3.8 24
12 5.0 RL2204-5.0-120-12-PTF 0.37 0.34 0.23 0.18 0.1 4.3 0.29 7.4 0.14 3.6 0.10 2.5 24
12 10.0 RL1604-10-120-12-PTF 0.22 0.20 0.13 0.10 0.04 2.9 0.23 5.8 0.14 3.6 0.10 2.5 24
12 25.0 RL1004-25-120-12-PTF 0.11 0.09 0.07 0.05 0.02 1.7 0.17 4.3 0.14 3.6 0.07 1.8 24
25 1.5 RL7008-1.5-110-25-PTF 1.34 1.19 0.81 0.59 1.50 18 0.75 19.1 0.18 4.6 0.33 8.4 20
25 3.0 RL5008-3.0-110-25-PTF 0.84 0.74 0.50 0.37 0.80 14 0.55 14.0 0.18 4.6 0.33 8.4 22
25 0.5 RL6904-0.5-120-25-PTF 2.41 2.16 1.49 1.16 0.8 17.8 0.75 19.1 0.14 3.6 0.33 8.4 22
25 1.0 RL4904-1.0-120-25-PTF 1.39 1.25 0.86 0.67 0.4 11.9 0.55 14.0 0.14 3.6 0.33 8.4 22
25 1.5 RL4004-1.5-120-25-PTF 1.00 0.90 0.62 0.48 0.3 9.2 0.46 11.7 0.14 3.6 0.25 6.4 24
25 3.0 RL2804-3.0-120-25-PTF 0.56 0.50 0.34 0.27 0.1 5.7 0.34 8.6 0.14 3.6 0.15 3.8 24
25 5.0 RL2204-5.0-120-25-PTF 0.37 0.34 0.23 0.18 0.1 4.3 0.28 7.1 0.14 3.6 0.15 3.8 24
50 5.0 RL5506-5.0-110-50-PTF 0.65 0.58 0.39 0.29 0.7 14 0.60 15.2 0.16 4.1 0.33 8.4 22
50 10.0 RL4006-10-110-50-PTF 0.39 0.34 0.23 0.17 0.4 10 0.45 11.4 0.17 4.3 0.25 6.4 24
50 25.0 RL4508-25-110-50-PTF 0.27 0.24 0.16 0.12 0.6 12 0.50 12.7 0.18 4.6 0.33 8.4 22
50 50.0 RL4010-50-110-50-PTF 0.19 0.17 0.11 0.08 0.6 12 0.45 11.4 0.20 5.1 0.33 8.4 22
50 100.0 RL3810-100-110-50-PTF 0.13 0.12 0.08 0.06 0.6 12 0.42 10.7 0.20 5.1 0.25 6.4 24
50 200.0 RL3312-200-110-50-PTF 0.08 0.07 0.05 0.04 0.5 9 0.40 10.2 0.23 5.8 0.25 6.4 20
Operating
Voltage
R25°C
(±20%) Type
Minimum
Switch Current
Maximum No-
Switch Current “H”
Joules/°C
D.C.
mW/°C
A (max) B (max) C ref.
AWG No.0°C 25°C 25°C 55°C in. mm. in. mm. in. mm.
50 1.0 RL7005-1.0-120-50-PTF 1.76 1.58 1.09 0.84 1.1 19.0 0.75 19.1 0.15 3.8 0.33 8.4 22
50 2.5 RL4505-2.5-120-50-PTF 0.87 0.78 0.54 0.42 0.5 11.7 0.50 12.7 0.15 3.8 0.33 8.4 24
50 5.0 RL3205-5.0-120-50-PTF 0.48 0.43 0.30 0.23 0.2 7.1 0.37 9.4 0.15 3.8 0.25 6.4 24
50 10.0 RL2505-10-120-50-PTF 0.30 0.27 0.18 0.14 0.1 5.4 0.30 7.6 0.15 3.8 0.15 3.8 24
50 25.0 RL1605-25-120-50-PTF 0.14 0.13 0.09 0.07 0.1 3.2 0.21 5.3 0.15 3.8 0.15 3.8 24
50 50.0 RL1604-50-120-50-PTF 0.10 0.09 0.06 0.05 0.1 3.2 0.21 5.3 0.14 3.6 0.15 3.8 24
50 100.0 RL1604-100-120-50-PTF 0.07 0.06 0.04 0.03 0.1 3.2 0.21 5.3 0.14 3.6 0.15 3.8 24
50 200.0 RL1604-200-120-50-PTF 0.06 0.05 0.03 0.02 0.1 3.2 0.21 5.3 0.14 3.6 0.15 3.8 24
120 10.0 RL7510-10-110-120-PTF 0.55 0.49 0.33 0.24 2.2 20 0.80 20.3 0.23 5.8 0.33 8.4 24
120 20.0 RL6010-20-110-120-PTF 0.37 0.33 0.22 0.16 1.4 18 0.65 16.5 0.23 5.8 0.33 8.4 20
120 50.0 RL4510-50-110-120-PTF 0.19 0.17 0.11 0.08 0.8 12 0.50 12.7 0.20 5.1 0.33 8.4 20
120 100.0 RL3510-100-110-120-PTF 0.13 0.11 0.08 0.06 0.5 11 0.40 10.2 0.20 5.1 0.25 6.4 22
120 2.5 RL8908-2.5-120-120-PTF 1.32 1.18 0.82 0.63 2.7 26.7 0.94 23.9 0.18 4.6 0.33 8.4 22
120 5.0 RL6308-5.0-120-120-PTF 0.76 0.68 0.47 0.37 1.4 17.8 0.68 17.3 0.18 4.6 0.33 8.4 20
120 10.0 RL4508-10-120-120-PTF 0.44 0.40 0.27 0.21 0.7 12.0 0.50 12.7 0.18 4.6 0.33 8.4 22
120 20.0 RL3008-20-120-120-PTF 0.25 0.23 0.16 0.12 0.4 7.8 0.35 8.9 0.18 4.6 0.25 6.4 24
120 50.0 RL2008-50-120-120-PTF 0.14 0.13 0.09 0.07 0.1 6.0 0.25 6.4 0.18 4.6 0.15 3.8 24
120 100.0 RL1706-100-120-120-PTF 0.09 0.08 0.05 0.04 0.1 4.3 0.23 5.8 0.16 4.1 0.15 3.8 24
240 50.0 RL6315-50-110-240-PTF 0.23 0.21 0.14 0.10 2.3 18 0.65 16.5 0.27 6.9 0.33 8.4 18
240 100.0 RL6315-100-110-240-PTF 0.16 0.15 0.10 0.07 2.3 18 0.65 16.5 0.27 6.9 0.33 8.4 18
240 250.0 RL6315-250-110-240-PTF 0.10 0.09 0.06 0.05 2.3 18 0.65 16.5 0.27 6.9 0.33 8.4 18
240 2.5 RL9912-2.5-120-240-PTF 1.46 1.31 0.90 0.70 4.6 32.6 1.04 26.4 0.22 5.6 0.33 8.4 20
240 5.0 RL8311-5.0-120-240-PTF 0.95 0.85 0.59 0.46 3.5 27.7 0.88 22.4 0.21 5.3 0.33 8.4 20
240 10.0 RL6011-10-120-240-PTF 0.53 0.48 0.33 0.26 1.7 17.6 0.65 16.5 0.21 5.3 0.33 8.4 22
240 20.0 RL4211-20-120-240-PTF 0.31 0.28 0.19 0.15 0.9 12.1 0.47 11.9 0.21 5.3 0.33 8.4 24
240 50.0 RL2611-50-120-240-PTF 0.16 0.14 0.10 0.08 0.2 8.0 0.31 7.9 0.21 5.3 0.25 6.4 24
240 100.0 RL2610-100-120-240-PTF 0.11 0.10 0.07 0.05 0.2 8.0 0.31 7.9 0.20 5.1 0.25 6.4 24
240 250.0 RL2610-250-120-240-PTF 0.07 0.06 0.04 0.03 0.2 8.0 0.31 7.9 0.20 5.1 0.25 6.4 24
480 25.0 RL6017-25-120-480-PTF 0.35 0.32 0.22 0.17 2.4 19.1 0.65 16.5 0.27 6.9 0.33 8.4 22
480 50.0 RL4217-50-120-480-PTF 0.21 0.19 0.13 0.10 1.3 13.3 0.47 11.9 0.27 6.9 0.33 8.4 24
480 100.0 RL3517-100-120-480-PTF 0.13 0.12 0.08 0.06 0.8 10.7 0.41 10.4 0.27 6.9 0.25 6.4 24
480 200.0 RL3517-200-120-480-PTF 0.09 0.08 0.06 0.04 0.8 10.7 0.41 10.4 0.27 6.9 0.25 6.4 24
Options
• Protective coating, replace “PTF” suffi x with “PFC”
• Tape and reel, replace “PTF” suffi x with “PFR”
• Coated and T&R, replace “PTF” suffi x with “PFCR”
• Other resistances
• Other tolerances, other transition temperatures
• Alternate size and confi gurations
• Other voltage ratings
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names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not affi liated with GE.
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