Flip chip bonding heater lamp

Fri, 19 Jun 2026 06:15:22 +0800

On the packaging line, flip chip bonding falls apart when thermal uniformity drifts. A cold spot during underfill cure, or a temperature overshoot in solder reflow, turns into yield loss — scrap that still carries wafer-level cost. We built the flip chip bonding heater lamp to keep the thermal budget inside the process window, cycle after cycle. What matters, technically It’s near-infrared (NIR), with a spectral profile matched to heating substrates and solder bumps quickly and with control. Across the bonding zone, wafer-level uniformity is ±0.1°C, and repeatability holds at ±0.05°C from lot to lot. The emitter sits in a quartz assembly to cut outgassing and to survive rapid thermal cycling without shedding particles. Cleanroom fit is baked in: rated for Class 1–100, and the mechanical interface is designed to keep particle generation at zero during operation. Why it works in practice Flip chip bonding needs heat that’s fast, clean, and deterministic — fast enough to hit cycle time, clean enough to protect lithography-grade surfaces, and deterministic enough to keep your control charts from acting up. The lamp ramps quickly with tight temperature control, so photoresist bake behavior stays stable (soft bake and hard bake) on films you can’t afford to rework, while solder wetting stays consistent and underfill dispense stays ready. The payoff is fewer reworks, less scrap, and OEE you can plan around. The things you’ll want to get right The lamp drops into bonding tools and reflow stations, but alignment and thermal coupling aren’t optional. Plan on a dedicated mounting fixture and a verified temperature feedback point right at the bond site. Expect a short commissioning run to dial in ramp profiles and PID settings for your specific substrate stack; once those are set, the process stays repeatable.

Bonding on Advanced IR Heating Technology

Flip chip bonding heater lamp