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QFP to QFP Adapters

ZIF socket adapter solutions for QFP devices—ideal for development, test, and repeated device insertion without re-soldering.

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QFP to QFP Adapters

QFP-to-QFP adapters provide a reusable ZIF socket interface for QFP devices while maintaining a QFP footprint
(or converting between QFP formats when required). They’re commonly used to reduce solder/rework cycles,
speed up development, and protect device leads during repeated insertion/removal.

Fast fit check inputs: pin count, pitch, body size, and a package drawing.

What Are QFP to QFP Adapters

A QFP-to-QFP adapter is an interconnect that replaces (or emulates) a soldered QFP footprint while providing a socketed interface for the IC.
In most cases, the bottom side matches a QFP footprint on your board or fixture, and the top side is a ZIF socket that accepts the device.

Common Applications and Use Cases

  • Firmware bring-up and lab debug
  • Prototype validation prior to committing to production assembly
  • Failure analysis / re-test with reduced device handling risk
  • Production screening or engineering qualification fixtures

To choose the correct QFP→QFP adapter, match your device pin count, lead pitch,
IC body size, and lead tip-to-tip dimensions. Then select the part number that matches
those dimensions exactly. If you don’t see an exact match, contact us for help—we’ll review your device’s mechanical
drawing and recommend the correct adapter.

 

 

Image Device Pin Count Part Number Lead Pitch IC Body IC Tip to Tip Socket Type Product Page
32-pin QFP to QFP clamshell zif adapter 32 PA32Q-32QF 0.80 mm 7 x 7 mm 9 x 9 mm Clamshell View product
44-pin QFP to QFP open top zif adapter 44 PA44QF03-44QF 0.80 mm 10 x 10 mm 12 x 12 mm Open Top View product
44-pin QFP to QFP adapter shown 44 PA44QF16-44QF 0.80 mm 10 x 10 mm 13.2 x 13.2 mm Clamshell View product
44-pin QFP to QFP open top zif adapter 44 PA44QFS31B-QF-ZO-SD 0.80 mm 10 x 10 mm 13.2 x 13.2 mm Open Top View Product
48-pin QFP to QFP open top zif adapter 48 PA48QFS20-QF-ZO-SD2 0.50 mm 7 x 7 mm 9 x 9 mm Open Top Contact us
52-pin QFP to QFP clamshell zif adapter 52 PA52 QFS26C-QF-ZL-SD 0.65 mm 10 x 10 mm 12 x 12 mm Clamshell Contact us
QFP to QFP adapter example configuration 64 PA64QFS20-QF-ZL-SD 0.50 mm 10 x 10 mm 12 x 12 mm Clamshell Contact us
64-pin QFP to QFP open top zif adapter 64 PA64QFS20-QF-ZO-SD 0.50 mm 10 x 10 mm 12 x 12 mm Open Top Contact us
64-pin QFP to QFP adapter with clamshell lidded socket, 0.8 mm pitch, 17.9 mm tip-to-tip 64 PA64QFS31B-QF-ZL-SD 0.80 mm 14 x 14 mm 17.9 x 17.9 mm Clamshell Contact us
64-pin QFP to QFP open top zif adapter 64 PA64QFS31D-QF-ZO-SD 0.80 mm 14 x 14 mm 16 x 16 mm Clamshell Contact us

Show remaining QFP to QFP adapters
Image Device Pin Count Part Number Lead Pitch IC Body IC Tip to Tip Socket Type Product Page
80-pin QFP to QFP clamshell zif adapter 80 PA80QFS20-QF-ZL-SD 0.50 mm 10 x 10 mm 12 x 12 mm Clamshell Contact us
80-pin QFP to QFP open top zif adapter 80 PA80QFS20-QF-ZO-SD 0.50 mm 10 x 10 mm 12 x 12 mm Open Top Contact us
80-pin QFP to QFP open top zif adapter 80 PA80QFS26A-QF-ZO-SD 0.65 mm 14 x 14 mm 17.2 x 17.2 mm Open Top Contact us
80-pin QFP open-top test socket, 0.80 mm pitch, 14 × 20 mm package, PA80QFR31C-QF-ZL-SD 80 PA80QFS31C-QF-ZL-SD 0.80 mm 14 x 20 mm 17.6 x 23.6mm Clamshell Contact us
80 PA80QFS26C-QF-Z0-SD 0.65 mm 14 x 14 mm 16 x 16 mm Open Top Contact us
100-pin QFP open-top test socket, 0.50 mm pitch, 14 × 14 mm package, PA100QFS20-QF-ZO-SD 100 PA100QFS20-QF-ZO-SD 0.50 mm 10 x 10 mm 12 x 12 mm Open Top Contact us
100-pin QFP clamshell test socket, 0.50 mm pitch, 14 × 14 mm package, PA100QFS20-QF-ZL-SD 100 PA100QFS20-QF-ZL-SD 0.50 mm 10 x 10 mm 12 x 12 mm Clamshell Contact us
00-pin QFP open-top test socket, 0.65 mm pitch, 14 × 20 mm package, PA100QFR26A-QF-ZO-SD 100 PA100QFR26A-QF-ZO-SD 0.65 mm 14 x 20 mm 17.2 x 23.2 mm Open Top Contact us
100-pin QFP clamshell test socket, 0.65 mm pitch, 14 × 20 mm package, PA100QFR26C-QF-ZL-SD 100 PA100QFR26C-QF-ZO-SD 0.65 mm 14 x 20 mm 17.6 x 23.6 mm Clamshell Contact us
100-pin QFP clamshell test socket, 0.65 mm pitch, 14 × 20 mm package, PA100QFR26D-QF-ZL-SD 100 PA100QFR26D-QF-ZL-SD 0.65 mm 14 x 20 mm 19 x 25 mm Clamshell Contact us
100-pin QFP open-top test socket, 0.65 mm pitch, 14 × 20 mm package, PA100QFR26D-QF-ZO-SD 100 PA100QFR26D-QF-ZO-SD 0.80 mm 14 x 20 mm 16 X 22 mm Open Top Contact us
100-pin QFP open-top test socket, 0.65 mm pitch, 14 × 20 mm package, PA100QFR26D-QF-ZO-SD 112 PA112QFS26C-QF-ZL-SD 0.65 mm 20 x 20 mm 22.2 x 22.2 mm Clam Shell Contact us
112-pin QFP open-top test socket, 0.65 mm pitch, 20 × 20 mm package, PA112QFS26C-QF-ZO-SD 112 PA112QFS26c-QF-ZO-SD 0.65 mm 20 x 20 mm 22 x 22 mm Open Top Contact us
128-pin QFP clamshell test socket, 0.50 mm pitch, 14 × 20 mm package, PA128QFR20-QF-ZL-SD 128 PA128QFR20-QF-ZL-SD 0.50 mm 14 x 20 mm 16 x 22 mm Clamshell Contact us
128-pin QFP open-top test socket, 0.80 mm pitch, 28 × 28 mm package, PA128QFS31A-QF-ZL-SD 128 PA128QFS31A-QF-ZL-SD 0.80 mm 28 x 28 mm 30 x 30 mm Clamshell Contact us
128-pin QFP clamshell test socket, 0.80 mm pitch, 28 × 28 mm package, PA128QFS31B-QF-ZL-SD 128 PA128QFS31B-QF-ZO-SD 0.80 mm 28 x 28 mm 31.2 x 31.2 mm Clamshell Contact us
144-pin QFP clamshell test socket, 0.50 mm pitch, 20 × 20 mm package, PA144QFS20-QF-ZL-SD 144 PA144QFS20-QF-ZL-SD 0.50 mm 20 x 20 mm 22 x 22 mm Clamshell Contact us
144-pin QFP open-top test socket, 0.50 mm pitch, 20 × 20 mm package, PA144QFS20-QF-ZO-SD 144 PA144QFS20-QF-ZO-SD 0.50 mm 20 x 20 mm 22 x 22 mm Open Top Contact us
144-pin QFP open-top test socket, 0.65 mm pitch, 28 × 28 mm package, PA144QFS26A-QF-ZO-SD 144 PA144QFS26A-QF-ZO-SD 0.65 mm 28 x 28 mm 31.2 x 31.2 mm Open Top Contact us
160-pin QFP clamshell test socket, 0.65 mm pitch, 28 × 28 mm package, PA160QFS26A-QF-ZL-SD 160 PA160QFS26A-QF-ZL-SD 0.65 mm 28 x 28 mm 31.2 x 31.2 mm Clamshell Contact us
176-pin QFP open-top test socket, 0.40 mm pitch, 20 × 20 mm package, PA176QFS16-QF-ZO-SD 176 PA176QFS16A-QF-ZO-SD 0.40 mm 20 x 20 mm 22 x 22 mm Open Top Contact us
176-pin QFP open-top test socket, 0.40 mm pitch, 20 × 20 mm package, PA176QFS16-QF-ZO-SD 176 PA176QFS20-QF-ZO-SD 0.50 mm 24 x 24 mm 26 x 26 mm Open Top Contact us
176-pin QFP Clamshell test socket, 0.40 mm pitch, 20 × 20 mm package, PA176QFS16-QF-ZL-SD 176 PA176QFS20-QF-ZL-SD 0.50 mm 20 x 20 mm 24 x 24 mm Clamshell Contact us
208-pin QFP open-top test socket, 0.50 mm pitch, 28 × 28 mm package, PA208QFS20-QF-ZO-SD 208 PA208QFS20-QF-ZO-SD 0.50 mm 28 x 28 mm 30 x 30 mm Open Top Contact us

Typical QFP Conversion Scenarios

Most QFP-to-QFP programs are “same pin count” solutions where the goal is adding a ZIF socket interface on top of a QFP base.
Selection typically depends on pitch, body size, and lead geometry.

Minimum inputs to confirm fit: pin count, pitch, body size/lead span, package drawing.

Mechanical and Electrical Considerations

Mechanical: clearance to nearby components, keep-outs for lid/clamp access, handling method (bench vs fixture).
Electrical: added interconnect length, insertion-cycle expectations, pass-through vs test access.

Standard vs. Custom QFP Adapter Solutions

Standard is best when your package matches an existing part number below.
Custom is best when pitch/body size is uncertain, clearance is tight, or you need fixture/test access features.

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