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TPM250/300/550/600 CHASSIS MOUNTED NON-INDUCTIVE POWER FILM RESISTOR TO227

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INTRODUCTION
These are compact TO227, 300W-600W high power resistors.  attachment to an air cooled or water cooled
heatsink is necessary.  Rated power can be 300W (one element) or 600W (one element).  These units exhibit
M4 screw terminals, very low series inductance, high density installation, vibration proof and the possibility
of perfect heat dissipation.  Applications include:  Snubber resistors for power supplies, gate resistors, pulse
generators, high frequency amplifiers, dumping resistors for theater audio equipment (i.e. Dividing networks
for loud speaker systems)

GENERAL SPECIFICATIONS
　

Item	TPM250	TPM300	Test Conditions
Rated Power	250 Watts	300 Watts	At flange temp. -55C to 25C
Single or Dual	Dual	Single
Resistance Range	0.1-1KR	0.1-1KR
Nominal Resistance	E24+	E24+	Additionally 2.0 and 5.0
TCR	+-100 ppm/C	+-100 ppm/C	For -55C to 120C
Tolerance	+-5%	+-5%
Temp. Range	-55 - +120C	-55 - +120C
Max Applied Voltage	E=Root(PR)
Withstanding Voltage	2500 VAC		60sec.
Load Life	+-(1.0 %+0.05 ohm)		25C, 90 min. on, 30min. off, 1000 hours.
Humidity	+-(1.0 %+0.05 ohm)		70C, 90-95%RH, DC0.1W, 1000 hours.
Temp. Cycle	+-(1.0 %+0.05 ohm)		Note 1
Short Time Overload	+-(0.25 %+0.05 ohm)		Note 2
Insulation Resistance	Over 1000 Mohm		Between Terminals and Flange
Vibration	+-(0.25 %+0.05 ohm)
Flammability	UL94V-0
Weight	30.0g

Notes:
1/  -55C, 30Min., +120C 30min., 20 cycles
2/  Wattage rating X 2.5, 2.5 seconds with heatsink

Item	TPM550	TPM600	Test Conditions
Rated Power	250 Watts	300 Watts	At flange temp. -55C to 25C
Single or Dual	Dual	Single
Resistance Range	50R-1KR	50R-1KR
Nominal Resistance	E24+	E24+	Additionally 2.0 and 5.0
TCR	+-100 ppm/C	+-100 ppm/C	For -55C to 120C
Tolerance	+-5%	+-5%
Temp. Range	-55 - +120C	-55 - +120C
Max Applied Voltage	E=Root(PR)
Withstanding Voltage	2500 VAC		60sec.
Load Life	+-(1.0 %+0.05 ohm)		25C, 90 min. on, 30min. off, 1000 hours.
Humidity	+-(1.0 %+0.05 ohm)		70C, 90-95%RH, DC0.1W, 1000 hours.
Temp. Cycle	+-(1.0 %+0.05 ohm)		Note 1
Short Time Overload	+-(0.25 %+0.05 ohm)		Note 2
Insulation Resistance	Over 1000 Mohm		Between Terminals and Flange
Vibration	+-(0.25 %+0.05 ohm)
Flammability	UL94V-0
Weight	30.0g

Notes:
1/  -55C, 30Min., +120C 30min., 20 cycles
2/  Wattage rating X 2.5, 2.5 seconds with heatsink

DIMENSIONS

A 38.0 +-0.2
B 25.0 +-0.2
C 11.8 +-0.4
D 4.2 +-0.1
E 13.0 +-0.3
F 15.0 +-0.4
G 30.0 +-0.1
H 10.0 +-0.2
J M4

CONSTRUCTION DIAGRAM

SCHEMATICS

TEMPERATURE RISE AND DERATING CURVES TPM250, TPM300

TPM300

TEMPERATURE RISE AND DERATING CURVES TPM550, TPM600

TPM600

PULSE OPERATION DURABILITY

ORDERING PROCEDURE EXAMPLE

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