SMHP25 Series Power Resistor SMHP25 Series * * * * * * 245C reflow compatible TO-263 housing Low inductance and capacitance for high frequency circuits 25W power rating High stability film resistance elements RoHS compliant IRC's SMHP series resistors satisfy demanding applications for accurate and stable power resistors housed in the convenient TO-263 case. The resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal resistance and ensuring high insulation resistance between terminals and metal back plate. The non-inductive design makes these products especially useful in high frequency and high speed pulse applications. Electrical Data Power Rating1 Heatsink2 25W Free Air3 2.5W Voltage Thermal Rating4 Resistance 500 V 3.3C/W Resistance Range Min Max 0.01 0.09 0.1 9.1 10 51K Nominal Typ. TCR Tolerances Resistance (ppm/C) Series5 E24 Includes 2.5 & 5.0 multiplier 1%, 5% Maximum current 25 amps Power rating based on 25C case temperature Power rating based on 25C ambient temperature 4 Maximum voltage 500V or P x R 5 Contact factory for availability of resistance or tolerance values outside this range See Chart Inductance Capacitance <10nH <2pF 1 2 3 Temperature Rise Data Resistor Film Temp Rise with Respect to Tab Temp 120 100 250 Tfilm (C) TCR (ppm/C) 0 to 100C Typical TCR For Low Values 200 150 100 80 60 40 20 50 0.01 0.1 0 0 1.0 Resistance (Ohms) Pulse Energy Durability 5 10 15 20 Power (Watts) 25 30 35 Power Derating Data 10K Damage Level 1K % of Rated Power Pulse Peak (Watts) 100 100 50 Safety Zone 10 10 10 100 1m 10m 100m Pulse Width (seconds) 25 Tab Temperature (C) 155 General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print. Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com A subsidiary of TT electronics plc SMHP25 Series Issue May 2010 SMHP25 Series Power Resistor Physical Data N G Dim In (nom) mm A 0.398 10.1 0.2 B 0.406 10.3 0.2 C 0.177 4.5 0.2 E 0.197 5.0 1.0 F 0.098 2.5 0.5 G 0.087 2.2 0.2 H 0.108 2.75 0.2 J 0.020 0.5 0.05 K 0.030 0.75 0.05 L 0.059 1.5 0.05 M 0.200 5.08 0.1 N 0.059 1.5 0.05 P 0.291 7.4 0.1 R Q B E F J M L P H K 11.0 A C 10.0 16.0 Case, Epoxy UL94-V0 Leads, Sn Plated Cu Leads Joint, Solder Resistor, Ni-Cr or RuO Substrate, Alumina Joint, Solder Tab, Matte Sn Plated Cu 3.50 1.60 5.08 Insulated Between Tab and Resistor Recommended minimum footprint dimensions. All dimensions are in millimeters (mm). Lead & Tab Material Tin Plated Copper Q 0.325 8.3 0.2 Part Weight 1.5g R 0.100 2.5 0.2 Environmental Data Test Method Specification - Performance Load Life 1,000 Hours @ 25C; 90 minutes on, 30 minutes off (1.0% + 1m) Humidity 1000 hours; 40C, 90-95% RH, 0.1W DC (1.0% + 1m) 5 cycles; 30 minutes @ -55C, 30 minutes at +155C (0.25% + 1m) 2X Rated Power, not to exceed 1.5X Rated Voltage for 5 seconds, 25 w/ Heat Sink (0.25% + 1m) 10 cycles; X, Y, Z axis, amplitude 0.75mm, 1002000Hz sweep/min (0.25% + 1m) Between terminals and tab >1000MW Terminals to tab; 60sec, 1mA 2000 volts AC 350 5C for 3 seconds (0.10% + 1m) 230 5C, 3sec. >95% coverage Temperature Cycle Short Time Overload Vibration Insulation Resistance Dielectric Withstanding Voltage Resistance to Solder Heat Solderability Operating Temperature Range Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com -55C to +155C SMHP25 Series Issue May 2010 SMHP25 Series Power Resistor Solder Reflow Profile Tube Packaging Data 350 60-80sec above 217C 300 Temp (C) 250 G F Preheat 200 150 150-200C 120-180sec 100 Peak 20-40sec. at (240-245C) 50 E A 400sec to Peak 0 0 B C 50 100 150 200 250 300 350 400 450 500 550 Time (sec) D Reel Packaging Data T P0 W B1 B0 F E1 P2 T2 T1 user direction of unreeling A0 P1 Tape dimensions meet EIA-481 requirements TFP - SMHP25LF - 1R50 - J Dim Nom. (mm) Tol. (mm) Dim Nom. (mm) Tol. (mm) A0 10.77 0.1 A 3.25 0.15 B0 16.33 0.1 B 8.0 0.15 B1 17.0 0.1 C 16.25 0.15 E1 1.75 0.1 D 34.4 (34.0) F 11.5 0.1 E 6.4 (6.0) P0 4.0 0.1 F R0.7 (R0.5) P1 16.0 0.1 G 535.0 1.0 P2 2.0 0.1 T 0.4 0.05 T1 0.05 --- T2 6.07 0.1 W 24.0 +0.3/-0.1 Reel Dimensions Outer Diam. 330 mm Inner Diam. 100 mm Width Qty. 27.4 mm max 500pcs/reel Application Notes Ordering Data Prefix Tube Dimensions Tape Dimensions - L01 Style SMHP25LF = 25W, TO-263 style power resistor Resistance Code 4-digit resistance code. Ex: 0R05 = 0.05, 10R0 = 10, 1K00 = 1K Absolute Tolerance Code J = 5%; F = 1% Packaging Code L01 = RoHS compliant tube (50 pcs per tube) L05 = RoHS compliant reel (500 pcs per reel) 1. Resistance measurement shall be made at the terminal foot. 2. Thermal design should satisfy the following equation: Tab Temperature (TT) + [Thermal Resistance (RqJT) x Power applied (Watts)] 155C over the full operating temperature of the application. 3. Resistor film temperature is not to exceed 155C during operation. 4. This product is RoHS compliant by exemption according to RoHS directive 2002/95/EC exemptions 5 & 7, as they apply to lead in glass and internal solder connections. For additional information or to discuss your specific requirements, please contact our Applications Team using the contact details below. Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com SMHP25 Series Issue May 2010