HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal The content of this specification may change without notification 02/19/08 Custom solutions are available. HOW TO ORDER RST 25-A 4X-100-100 J Y B Packaging B = bulk FEATURES TCR (ppm/°C) Z = +100 Tolerance J = +5% K= +10% Resistance 2 (leave blank for 1 resistor) Resistance 1 R10 = 0.1 ohm 1R0 = 1.0 ohm 100 = 10 ohm 101 = 100 ohm 102 = 1.0K ohm TO227 package in power ratings of 150W, 250W, 300W, 600W, and 900W M4 Screw terminals Available in 1 element or 2 elements resistance Very low series inductance Higher density packaging for vibration proof performance and perfect heat dissipation Resistance tolerance of 5% and 10% APPLICATIONS Screw Terminals/Circuit 2X, 2Y, 4X, 4Y, 4Z Package Shape (refer to schematic drawing) A or B Rated Power 15 = 150 W 25 = 250 W 20 = 200 W 30 = 300 W 60 = 600W 90 = 600W (S) Series High Power Resistor, Non-Inductive, Screw Terminals For attaching to air-cooled heat sink or water cooling applications Snubber resistors for power supplies Gate resistors Pulse generators High frequency amplifiers Dumping resistance for theater audio equipment on dividing network for loud speaker systems CONSTRUCTION 1 2 3 4 5 6 DIMENSIONS (mm) Shape Series A RST20-A2X, A2Y, A4Z RST15-A4X, A4Y RST25-A4X RST30-A4Z B RST60-A4X RST90-A4Z RST20-B2X, B2Y, B4Z RST30-B2X, B2Y, B4Z RST60-B2X, B2Y, B4Z RST15-B4X, B4Y RST25-B4X, B4Y RST55-B4X, B4Y A 38.0 ± 0.2 38.0 ± 0.2 38.0 ± 0.2 B 25.0 ± 0.2 25.0 ± 0.2 25.0 ± 0.2 38.0 ± 0.2 25.0 ± 0.2 C 13.0 ± 0.5 15.0 ± 0.5 15.0 ± 0.5 11.8 ± 0.5 D 4.2 ± 0.1 4.2 ± 0.1 4.2 ± 0.1 4.2 ± 0.1 E 13.0 ± 0.3 13.0 ± 0.3 13.0 ± 0.3 13.0 ± 0.3 F 15.0 ± 0.4 15.0 ± 0.4 15.0 ± 0.4 15.0 ± 0.4 G 30.0 ± 0.1 30.0 ± 0.1 30.0 ± 0.1 30.0 ± 0.1 H 10.0 ± 0.2 12.0 ± 0.2 12.0 ± 0.2 10.0 ± 0.2 J M4, 10mm M4, 10mm M4, 10mm M4, 10mm Case Filling Resistor Terminal ALO. ALN Ni Plated Cu Depth of terminal screw M4 10mm, screws are excluded CIRCUIT LAYOUT SCHEMATIC Body Shape A American Accurate Components, Inc. Body Shape B 188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 1 HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal The content of this specification may change without notification 02/19/08 SPECIFICATIONS Series Body Type/Circuit RST15*- A4X, A4Y Rated Power 150 W Dual Resistance Range (Ω) 0.1 ~ 1.0K E24 TCR (ppm/°C) ±100 RST15- B4X, B4Y 150 W Dual 0.1 ~ 1.0K E24 RST20*- A2X, A2Y, A4Z 200 W Single 0.1 ~ 1.0K RST20- B2X, B2Y, B4Z 200 W Single 0.1 ~ 1.0K RST25*- A4X 250 W Dual RST25- B4X, B4Y 250 W RST30*- A4Z Resistance EIA Values Tolerance Operating Temp. ±5% -55°C ~ +155°C ±100 ±5% -55°C ~ +120°C E24 ±100 ±5% -55°C ~ +155°C E24 ±100 ±5% -55°C ~ +120°C 1.0 ~ 1.0K E24 ±100 ±5% -55°C ~ +120°C Dual 0.1 ~ 1.0K E24 ±100 ±5% -55°C ~ +120°C 300 W Single 1.0 ~ 1.0K E24 ±100 ±5% -55°C ~ +120°C -55°C ~ +120°C RST30- B2X, B2Y, B4Z 300 W Single 0.1 ~ 1.0K E24 ±100 ±5% RST55- B4X, B4Y 550 W Dual 50.0 ~ 1.0K E24 ±100 ±5% -55°C ~ +120°C RST60- A4X 600 W Dual 100 ~ 1.0K All ±100 ±10% -55°C ~ +155°C RST60- B2X, B2Y, B4Z 600 W Single 50.0 ~ 1.0K E24 ±100 ±5% -55°C ~ +120°C RST90- A4Z 600 W Single 100 ~ 1.0K All ±100 ±10% -55°C ~ +155°C PERFORMANCE Item RST15*, RST20* All other Series Condition RST15, RST20: with heat sink, 0.9 K/W All Other Models: at flange -55°C ~ +25°C Rated Power Per specification Per specification Maximum Applied Voltage Withstanding Voltage Load Life E = √P*R 2500V DC E = √P*R 2500V DC ± (1.0% + 0.05 Ω) ± (1.0% + 0.05 Ω) Humidity ± (1.0% + 0.05 Ω) ± (1.0% + 0.05 Ω) 40°C, 90 ~ 95% RH, DC 0.1W, 1000 hrs *70°C, 90 ~ 95% RH, DC 0.1W, 1000 hrs Temperature Cycle ± (1.0% + 0.05 Ω) ± (1.0% + 0.05 Ω) -55°C, 30 min., +155°C, 30 min.; 20 cycles -55°C, 30 min., +120°C, 30 min.; 20 cycles Short Time Overload Soldering Heat Solderability Insulation Resistance Vibration ± (0.25% + 0.05 Ω) n/a n/a > 1,000 Meg ohm ± (0.25% + 0.05 Ω) ± (0.25% + 0.05 Ω) n/a > 1,000 Meg ohm ± (0.25% + 0.05 Ω) ± (0.25% + 0.05 Ω) Flammability UL94V-O UL94V-O 60 seconds 25°C, 90 min on, 30 min off, 1000 hrs Rated Power x 2.5, 2 sec. with heat sink 350°C ± 5°C, 3 seconds Between Terminals and Flange PULSE OPERATION DURABLITY 1 = RST30- B2X, B2Y, B4Z 2 = RST25-B4X, B4Y (one resistor) Pulse Peak Power (Watts) The figure illustrating pulse load shows the safe operation area, which measured experimentally and which can operate with a rectangle pulse of a long cycle. However, data does not guarantee the operation about the continuous pulse load of a short cycle in which a resistor carries out a temperature rise with average electric power. Pulse peak power recommends operating within the rated electric power. Pulse operation of models RST60-B2X, B2Y, B4Z are the same as models RST30- B2X, B2Y, B4Z. NOTES For RST60-A4X and RST90-A4Z When water cooled heat sink is used, maintaining a flange temperature of 25°C is difficult. When the flange temperature is over 25°C, the rating will be decreased as illustrated in the derating curve. In short pulse applications, the peak power can not exceed over 600W. Pulse Width (seconds) American Accurate Components, Inc. 188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 2 HIGH POWER RESISTOR – Non Inductive Chassis Mount, Screw Terminal The content of this specification may change without notification 02/19/08 DERATING CURVE RST15-A4X, A4Y RST20-A2X, A2Y, A4Z % Rated Power RST25-A4X RST30-A4Z % Rated Power Flange Temperature (°C) RST15-B4X, B4Y RST20-B2X, B2Y, B4Z RST25- B4X, B4Y RST30- B2X, B2Y, B4Z % Rated Power Flange Temperature (°C) RST55-B4X, B4Y RST60-A4X, B2X, B2Y, B4Z % Rated Power Flange Temperature (°C) Flange Temperature (°C) TEMPERATURE RISE RST20-A2X, A2Y, A4Z with 0.2K/W heat sink Temperature Rise (°C) RST30- B2X, B2Y, B4Z with 0.1° C/W heat sink Temperature Rise (°C) American Accurate Components, Inc. RST30-A4Z with 0.1K/W heat sink Temperature Rise (°C) RST60-AX4, B2X, B2Y, B4Z Temperature Rise (°C) 188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889 3