What is difference between LQFP and TQFP?

TQFP (thin) and LQFP (low-profile) are common form factors for surface mount microcontrollers. The main differences between TQFP and LQFP is that TQFP has a maximum height of 1.6mm and LQFP has a maximum height of 1.2mm. The height does not affect the compatibility of the footprints, meaning they are interchangeable.

What does LQFP stand for?

A low-profile quad flat package (LQFP) is a surface mount integrated circuit package format with component leads extending from each of the four sides.

What is lqfp64 package?

Low Profile Quad Flat Pack. Dummy Low Profile Quad Flat Pack (LQFP) packages provide the same benefit of the metric QFP packages, but are thinner (body thickness of 1.4mm) and have a standard lead-frame footprint (2.0mm lead footprint).

What’s the difference between a PQFP and a TQFP?

PQFP, or plastic quad flat pack, is a type of QFP, as is the thinner TQFP package. PQFP packages can vary in thickness from 2.0 mm to 3.8 mm. A Low-profile Quad Flat Package (LQFP) is a surface mount integrated circuit package format with component leads extending from each of the four sides.

What’s the difference between QFP and PLCC pins?

A package related to QFP is PLCC which is similar but has pins with larger pitch, 1.27 mm (or 1/20 inch), curved up underneath a thicker body to simplify socketing (soldering is also possible). It is commonly used for NOR flash memories and other programmable components. The quad flat-pack has connections only around the periphery of the package.

How big is the terminal pitch of a QFP?

QFP main features are: • Package size: 5 x 5 mm2to 32 x 32 mm2 • Terminal Counts: 32 to 240 • Terminal pitch: 0.4 mm to 0.8 mm • Terminal plating: Sn, Ni-Pd-Au • Package thickness: –H/LQFP: 1.4 mm –H/TQFP: 1.0 mm –QFP: > 1.6 mm • Meets RoHS, ELV and REACH • Halogen-free and lead-free compliant Figure 1 shows examples of some standard QFP packages.

What is the standard form of a QFP?

The standard form is a leaded plastic package with a flat rectangular body, usually square. Leads extend from all four sides of the body. The leads are formed in a gull wing shape to allow solid footing during assembly to a PCB. Standard Pb-free lead finish is matte tin. Thermally enhanced QFPs may be offered with an Exposed Pad (EP).