Thin Small Outline Package

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An outline drawing of a Type I TSOP with 32 leads

Thin Small Outline Package, or TSOP is a type of surface mount IC package. They are very low-profile (about 1mm) and have tight lead spacing (as low as 0.5mm).

They are frequently used for RAM or Flash memory ICs due to their high pin count and small volume. In some applications, they are being supplanted by ball grid array packages which can achieve even higher densities. The prime application for this technology is memory. SRAM, Flash memory, FSRAM and E2PROM find this package symbiotic with end-use products. It answers the needs required by telecom, cellular, memory modules, PC Cards (PCMCIA cards), wireless, netbooks and countless other product applications.

TSOP is the smallest leaded form factor for flash memory.[1]

Physical properties[edit]

TSOPs are rectangular in shape and come in two varieties: Type I and Type II. Type I ICs have the pins on the shorter side and Type II have the pins on the longer side. The table below shows basic measurements for common TSOP packages. [2]

Type I[edit]

Part Number Pins Body Width/mm Body Length/mm Lead Pitch/mm
TSOP28 28 8.1 11.8 0.55
TSOP28/32 28/32 8 18.4 0.5
TSOP40 40 10 18.4 0.5
TSOP48 48 12 18.4 0.5
TSOP56 56 14 18.4 0.5

Type II[edit]

Part Number Pins Body Width/mm Body Length/mm Lead Pitch/mm
TSOP20/24/26 20/24/26 7.6 17.14 1.27
TSOP24/28 24/28 10.16 18.41 1.27
TSOP32 32 10.16 20.95 1.27
TSOP40/44 40/44 10.16 18.42 0.8
TSOP50 50 10.16 20.95 0.8
TSOP54 54 10.16 22.22 0.8
TSOP66 66 10.16 22.22 0.65

Similar packages[edit]

There are a variety of small form-factor IC carrier available other than TSOPs

See also[edit]

References[edit]

  1. ^ Intel. "Small Outline Package Guide". 1999. p. 1-1. [1]
  2. ^ SiliconFarEast: "TSOP - Thin Small Outline Package"

External links[edit]