gap pad ? 3500ulm (ultra-low modulus) is an extremely soft gap flling material with a thermal conductivity of 3.5 w/m-k. the material offers exceptional thermal performance at low pressures due to a unique 3.5 w/m-k fller package and ultra-low modulus resin formulation. the enhanced material is well suited for high performance applications requiring extremely low assembly stress. gap pad ? 3500ulm maintains a conformable nature that allows for excellent interfacing and wet-out characteristics, even to surfaces with high roughness and/or topography. gap pad ? 3500ulm is offered with and without fberglass and has higher natural inherent tack on one side of the material, eliminating the need for thermally- impeding adhesive layers. the top side has minimal tack for ease of handling. gap pad ? 3500ulm is supplied with protective liners on both sides. note: to build a part number, visit our website at www.bergquistcompany.com. gap pad ? 3500ulm typical applications include ? consumer electronics ? asics and dsps ? telecommunications ? pc applications configurations available ? sheet form and die-cut parts pds_gp_3500ulm_1214 features and benefits ? thermal conductivity: 3.5 w/m-k ? fiberglass reinforced for shear and tear resistance ? non-fberglass option for applications that require an additional reduction in stress product description highly conformable, thermally conductive, ultra-low modulus material december 2014 property imperial value metric value test method color gray gray visual reinforcement carrier fiberglass or no fiberglass fiberglass or no fiberglass ? thickness (inch) / (mm) 0.020 to 0.125 0.508 to 3.175 astm d374 inherent surface tack 2 2 ? density (bulk rubber) (g/cc) 3.1 3.1 astm d792 heat capacity (j/g-k) 1.0 1.0 astm e1269 young's modulus (psi) / (kpa) (1) (2) 4 27.5 ? continuous use temp (f) / (c) -76 to 392 -60 to 200 ? electrical dielectric breakdown voltage (vac) >5000 >5000 astm d149 dielectric constant (1 000 hz) (3) 6.0 6.0 astm d150 volume resistivity (ohm-meter) 10 10 10 10 astm d257 flame rating v-o v-o u.l. 94 thermal thermal conductivity (w/m-k) 3.5 3.5 astm d5470 thermal performance vs. strain deflection (% strain) 10 20 30 thermal impedance (c-in 2 /w) 0.040" (4) 0.50 0.44 0.39 1) young?s modulus, calculated using 0.01 in/min. step rate of strain with a sample size of 0.79 inch 2 after 5 minutes of compression at 10% strain on a 1mm thickness material. 2) thirty second delay value shore 000 hardness scale is 70 for 125 mil. 3) minimum value at 20 m il. 4) the astm d5470 test fixture was used. t he r ecorded value includes i nterfacial thermal resistance. these v alues are provided for reference only. actual application performance is d irectly related to the surface roughness, flatness and pressure applied. typical properties of gap pad 3500ul m .25 .50 .75 1.00 1.25 1.50 1.75 2.00 140 120 100 80 60 40 20 0 thickness vs. thermal resistance gap pad 3500ulm thermal resistance (c-in 2 /w) resultant thickness (mils)
for the most direct access to local sales and technical support visit: www.bergquistcompany.com americas +1.800.347.4572 europe +31.35.5380684 asia +852.2690.9296 tds gap pad ? 3500ulm, december 2014 disclaimer note: the information provided in this technical data sheet (tds) including the recommendations for use and application of the product are based on our k n o w l e d g e a n d e x p e r i e n c e o f t h e p r o d u c t a s a t t h e d a t e o f t h i s t d s . t h e p r o d u c t can have a variety of different applications as well as differing application and working conditions in your environment that are beyond our control. henkel is, t h e r e f o r e , n o t l i a b l e f o r t h e s u i t a b i l i t y o f o u r p r o d u c t f o r t h e p r o d u c t i o n p r o c e s s e s and conditions in respect of which you use them, as well as the intended applications and results. we strongly recommend that you carry out your own prior trials to confrm such suitability of our product. a n y l i a b i l i t y i n r e s p e c t o f t h e i n f o r m a t i o n i n t h e te c h n i c a l d a t a s h e e t o r a n y o t h e r w r i t t e n o r o r a l r e c o m m e n d a t i o n ( s ) r e g a r d i n g t h e c o n c e r n e d p r o d u c t i s e x c l u d e d , except if other wise explicitly agreed and except in relation to death or personal injury caused by our negligence and any liability under any applicable mandatory product liability law. i n case products are delivered by henkel belgium nv, henkel electronic materials nv, henkel nederland bv, henkel technologies france sas and henkel france sa please additionally note the following: in case henkel would be nevertheless held liable, on whatever legal ground, henkels liability will in no event exceed the amount of the concerned delivery. in case products are delivered by henkel colombiana, s.a.s. the following disclaimer is applicable: the information provided in this technical data sheet (tds) including the recommendations for use and application of the product are based on our knowledge and experience of the product as at the date of this tds. henkel is, t h e r e f o r e , n o t l i a b l e f o r t h e s u i t a b i l i t y o f o u r p r o d u c t f o r t h e p r o d u c t i o n p r o c e s s e s and conditions in respect of which you use them, as well as the intended applications and results. we strongly recommend that you carry out your own prior trials to confrm such suitability of our product. a n y l i a b i l i t y i n r e s p e c t o f t h e i n f o r m a t i o n i n t h e te c h n i c a l d a t a s h e e t o r a n y o t h e r w r i t t e n o r o r a l r e c o m m e n d a t i o n ( s ) r e g a r d i n g t h e c o n c e r n e d p r o d u c t i s e x c l u d e d , except if other wise explicitly agreed and except in relation to death or personal injury caused by our negligence and any liability under any applicable mandatory product liability law. in case products are delivered by henkel corporation, resin technology group, inc., or henkel canada corporation, the following disclaimer is applicable: the data contained herein are furnished for information only and are believed to be reliable. we cannot assume responsibility for the results obtained by others over whose methods we have no control. it is the users responsibility to d e t e r m i n e s u i t a b i l i t y f o r t h e u s e r s p u r p o s e o f a n y p r o d u c t i o n m e t h o d s m e n t i o n e d herein and to adopt such precautions as may be advisable for the protection of property and of persons against any hazards that may be involved in the handling and use thereof. in light of the foregoing, henkel corporation specifcally disclaims all warranties expressed or implied, including warranties of m e r c h a n t a b i l i t y o r f t n e s s f o r a p a r t i c u l a r p u r p o s e , a r i s i n g f r o m s a l e o r u s e of henkel corporations products. henkel corporation specifcally disclaims any liability for consequential or incidental damages of any kind, including lost profts. the discussion herein of various processes or compositions is not to be interpreted as representation that they are free from domination of patents owned by others or as a license under any henkel corporation patents that may cover such processes or compositions. we recommend that each prospective user test his proposed application before repetitive use, using this data as a guide. this product may be covered by one or more united states or foreign patents or patent applications. trademark usage except as otherwise noted, all trademarks in this document are trademarks of henkel corporation in the u.s. and elsewhere. ? denotes a trademark registered in the u.s. patent and trademark offce reference 0.1
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