Thick-Film Electronic Substrates

Ceramic Substrates for Thick-Film Electronics

Substrate Materials • Size & Thickness • Laser Machining • Laser Scribing • Edge Finishing

CoorsTek developed the standards for thick-film ceramic substrates and continues to provide economical yet durable substrates for hybrid integrated circuits, surface mount devices, sensors, and other thick-film electronics. We help you design a thick-film ceramic substrate tailored to your application:

• Material selection
• Size & thickness
• Tolerancing
• Laser machining & scribing
• Edge finishing
• Inspection & special requirements

Why Ceramic Thick-Film Substrates?

Alumina

Alumina is the material of choice for most thick-film ceramic substrates — delivering durable, cost-effective performance for hybrid electronic circuits with proven reliability. CoorsTek has engineered different grades, formulations, and thicknesses to provide an optimal fit for a variety of applications.  

Alumina Thick-Film Substrates

CoorsTek ADS-96R thick-film alumina substrates are the standard, particularly well suited for small-geometry, high-resistance circuitry — engineered to minimize resistivity variation and maximize aged adhesion.

MidFilm® Substrates

CoorsTek MidFilm substrates are compatible with etchable inks and photo-formed systems — combining high flexural strength and thermal conductivity.

Opaque Thick-Film Substrates

For light-sensitive semiconductor device applications, use CoorsTek opaque ADOS-90R alumina material — formulated specifically to block light transmittance and absorb stray light.

Substrate Size and Thickness

Substrate Thickness (alumina)

CoorsTek offers thick-film substrate thicknesses from 0.381 mm (0.015") to 2.54 mm (0.100"). The most common and economical thicknesses range from 0.635 mm (0.025") to 1.016 mm (0.040"). Minimum hole diameters are based on thickness.

Substrate Thickness	Minimum Hole Diameter
0.635 - 0.889 mm (0.025" - 0.035")	0.381 mm (0.015")
0.914 - 1.524 mm (0.036" - 0.060")	0.508 mm (0.020")
1.549 - 2.032 mm (0.061" - 0.080")	0.635 mm (0.025")

 

Substrate Size (Alumina)

CoorsTek offers a wide range of standard and common sizes. Contact us if you need a larger size or complex geometry.

 

Standard Sizes
114.3 x 114.3 mm	(4.5" x 4.5")
114.3 x 165.2 mm	(4.5" x 6.5")
127.0 x 177.8 mm	(5.0" x 7.0")
139.7 x 165.2 mm	(5.5" x 6.5")
139.7 x 190.5 mm	(5.5" x 7.5")

Laser Machining

CoorsTek provides a wide range of laser machining, profiling, drilling, scribing, and annealing services so your substrates fit just what you need in your application. We provide design consultation, rapid prototyping, and expedited deliveries. 

Laser Scribing

CoorsTek offers special differential scribing to enhance preferential singulation. By varying the laser pulse spacing and depth in the (x) and (y) scribe directions, the sequence of singulation is controlled more precisely. Enhanced laser scribing helps prevent hooking, chipping, and premature breakage — improving process yields. Our Design Guide provides typical scribe line configurations and tolerances. 

Edge Finishing

Laser Scribed Edge

SMOOTHEDGE™ SUBSTRATES

SilkEdge™ Substrates