HPC Series Stackpole Electronics, Inc. High Power Surface Mount Resistor Resistive Product Solutions The HPC series represents a breakthrough in functional design, thermal management and end-user benefits. Borrowing from long-proven techniques used in power semiconductors, the HPC series provides up to eight times more useful power than SMD power resistors currently available. The HPC series, through superior characterization, is intended to remove the mystery of managing board level power by combining established techniques in new ways. The result is superior technology in design options, in a cost effective package. Features: * * * * * Up to 12W with no external heat sinks Compatible with conventional pick and place Only 0.5 x 0.5 PCB footprint Non-inductive resistive element Anodized heat sink top provides 800V voltage withstanding * * * * Up to 50W for short duration Stackpole patent no. US 7,286,358 B2 Available in 1% and 5% tolerance RoHS compliant / lead-free Electrical Specifications Type / Code Power Rating (Watts) @ 40C w/400 LFM air flow Power Rating (Watts) @ 40C no air flow Maximum Working Voltage Maximum Overload Voltage Dielectric Strength Inductance Resistance Temperature Coefficient Ohmic Range () and Tolerance 1%, 5% HPC12 12W 5W 200V 400V 1,500V <2nH 150 ppm/C 0.025 - 250K Please refer to the High Power Resistor Application Note (page 4) for more information on designing and implementing high power resistor types. Mechanical Specifications Type / Code L Body Length W Body Width H Body Height b Bottom Termination Unit HPC12 0.48 12.19 0.50 12.70 0.40 10.16 0.11 2.79 inches mm Rev Date: 02/10/2012 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 1 www.seielect.com marketing@seielect.com HPC Series Stackpole Electronics, Inc. High Power Surface Mount Resistor Resistive Product Solutions Performance Characteristics Test Test Conditions (JIS C 5202) Test Results Short Time Overload 2.5x rated voltage for 5 seconds (2% + 0.1) Dielectric Withstanding Voltage 100VAC, 1 minute (1% + 0.05) Resistance to Soldering Heat 260C 5C for 10 sec; 0.5 sec (Solder Bath) (1% + 0.05) Solderability 235C 5C for 2 sec.; 0.5 sec (Colophonium flux) 95% coverage, minimum -65C: 30 min.; 25C: 2 to 3 min. 150C: 30 min.; 25C: 2 to 3 min. (5 cycles) 40C 2C, 90% to RH, rated load 90 min. ON, 30 min. OFF for 1,000 hrs. -0 hrs. / +48 hrs. 70C 2C, 90% to RH, rated load 90 min. ON, 30 min OFF for 1,000 hrs. -0 hrs. / +48 hrs. Temperature Cycle Endurance (Damp load) Endurance (Rated load) (1% + 0.05) Jumper (<0.05) (3% + 0.1) Jumper (<0.05) (3% + 0.1) Jumper (<0.05) Voltage Coefficient 1/10 rated voltage for 3 sec. max. then rated voltage for 3 sec. max. 100 (ppm/V) Robustness of Termination Bend of 3mm for 5 1 sec. (1% + 0.05) HPC12 Power Derating Curve Max Peak Power (Watts) . 14 12 400 LF/M Airflow 10 200 LF/M Airflow 8 No Airflow 6 4 2 0 40 70 100 130 Ambient Temperature (Deg. C) Max Peak Power (Watts) . HPC12 Power vs. Duration 60 50 10% Duty Cycle 200 LF/M 40 10% Duty Cycle, No Airflow 30% Duty Cycle, 200 LF/M 30 33% Duty Cycle, No Airflow 20 10 0 1 15 30 45 60 75 90 Peak Power Duration (seconds) Rev Date: 02/10/2012 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 2 www.seielect.com marketing@seielect.com HPC Series Stackpole Electronics, Inc. High Power Surface Mount Resistor Resistive Product Solutions How to Order 1 2 3 4 5 6 7 8 9 10 11 H P C 1 2 J T 1 K 0 0 Product Series HPC High Power SMD Size 12 Power 12W Tolerance Code Tol 1% F J 5% Code T B Packaging Description Tape Bulk Size 12 Quantity 200 100 Resistance Value Four characters with the multiplier used as the decimal holder. -3 "L" used as multiplier of 10 for any value under 0.1 ohm. 0.125 ohm = R125 0.1 ohm = R100 100 Kohm = 100K Legacy Part Number (before January 3, 2011): Type HPC SEI Type Code Nominal Resistance Tolerance Packaging HPC 12 1K 5% R Description High Power SMD Code 12 Rev Date: 02/10/2012 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. Tolerance 1% 5% 3 Types HPC12 Qty 200 100 Description Tape Bulk Code R B www.seielect.com marketing@seielect.com HPC Series Stackpole Electronics, Inc. High Power Surface Mount Resistor Resistive Product Solutions High Power Chip Resistors and Thermal Management Stackpole has developed several surface mount resistor series in addition to our current sense resistors, which have had higher power ratings than standard resistor chips. This has caused some uncertainty and even confusion by users as to how to reliably use these resistors at the higher power ratings in their designs. The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated power assumes an ambient temperature of no more than 100 degrees C for the CSS / CSSH series and 70 degrees C for all other high power resistor series. In addition, IPC and UL best practices dictate that the combined temperature on any resistor due to power dissipated and ambient air shall be no more than 105C. At first glance this wouldn't seem too difficult, however the graph below shows typical heat rise for the CSR 1/2 100 milliohm at full rated power. The heat rise for the RMCP and RNCP would be similar. The RHC with its unique materials, design, and processes would have less heat rise and therefore would be easier to implement for any given customer. The 102 degrees C heat rise shown here would indicate there will be additional thermal reduction techniques needed to keep this part under 105C total hot spot temperature if this part is to be used at 0.75 watts of power. However, this same part at the usual power rating for this size would have a heat rise of around 72 degrees C. This additional heat rise may be dealt with using wider conductor traces, larger solder pads and land patterns under the solder mask, heavier copper in the conductors, vias through PCB, air movement, and heat sinks, among many other techniques. Because of the variety of methods customers can use to lower the effective heat rise of the circuit, resistor manufacturers simply specify power ratings with the limitations on ambient air temperature and total hot spot temperatures and leave the details of how to best accomplish this to the design engineers. Design guidelines for products in various market segments can vary widely so it would be unnecessarily constraining for a resistor manufacturer to recommend the use of any of these methods over another. Note: The final resistance value can be affected by the board layout and assembly process, especially the size of the mounting pads and the amount of solder used. This is especially notable for resistance values 50 m. This should be taken into account when designing. Rev Date: 02/10/2012 This specification may be changed at any time without prior notice Please confirm technical specifications before you order and/or use. 4 www.seielect.com marketing@seielect.com