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ALPHA® TRUEHEIGHT® PREFORMS
ALPHA® TrueHeight® Solder Preforms prevents die tilt and delivers consistent bondline thickness.ALPHA® TrueHeight® Preforms can be tailored for different applications. Customized shapes and thicknesses, with embedded spacer(s) that address all major applications requiring 75µm bondline and above, can be delivered to you.
ALPHA® TrueHeight® Preforms have built in spacers that can be strategically located to ensure consistent bondline thickness and minimal die tilt. The design architecture not only addresses the BLT requirement but also reduces opportunities for voiding. Gases aren’t prevented from escaping the structure itself. Also, ALPHA® TrueHeight® Preforms can be flux coated with a wide range of fluxes designed for your specific application.
Key Attributes
• Superior bondline thickness control
• Minimal bondline tilt
• Consistent reliability performance
• Tailored for your specific application(s)
• Simplicity of design offers best-in-class overall performance
TOUGHERELECTRONICASSEMBLIES
REDUCEDLABORCOST
LONG-TERM RELIABILITY
SPEEDLIMIT
REDUCEDTIME TOMARKET
HIGHERYIELDS
REDUCEDVOIDING
SOLDER PREFORMS
DieSolderSubstrate
ENGINEERED WITH SIMPLICITY IN MIND TO ALLOW EASE OFIMPLEMENTATION AND MAXIMUM SOLDERING PERFORMANCE.
Global Headquarters300 Atrium Drive Somerset, NJ 08873 USATel: +1-814-946-1611
European HeadquartersUnit 2, Genesis Business Park Albert Drive, Woking, Surrey, GU21 5RWUKTel: +44 (0) 1483 758400
Asia/Pacific8/F, Paul Y. Centre, 51 Hung To RoadKwun Tong, KowloonHong KongTel: 852-3190-3100
AlphaAssembly.com
For more information about ALPHA® TrueHeight® Preforms, please contact your Alpha Representative.
©2017 Alpha Assembly Solutions Issued 10/17 SM1474
PRODUCT INFORMATION
LEGEND TOLERANCE
a = length (1.35 to 58mm) ±0.05mm
b = width (1.35 to 58mm) ±0.05mm
c = thickness ±10%
Flexible bondline control at strategic location(s)
Also available in other or special alloys upon request
Bondline thickness available from 0.075mm
ALPHA® TRUEHEIGHT® PREFORMS
a
b c
TECHNICAL DATA
STANDARD ALLOY DESIGNATION SOLIDUS / LIQUIDUS. °C
J-STD-006BPb-free
High Reliability Sn-Pb
SAC305 / 387 / 357 / 405 InnoLot / PowerBond
Sn5Pb92.5Ag2.5
217 – 221206- 218 / 225 – 255
299 – 304
Proprietary Low Silver SACX Plus 0307 217 - 228
ALPHA® TRUEHEIGHT® PREFORMS APPLICATIONSSpacer(s) are used depending on assembly type:• Single – single point lift to achieve desired BLT• Dual – achieve desired BLT and control tilt
Die and Clip Attach RF Power Amplifier Assembly Multi-Layer Assembly