part number     pins  body width / mm  body length / mm  lead pitch / mm
0       tsop28       28              8.1              11.8             0.55
1  tsop28 / 32  28 / 32              8.0              18.4             0.50
2       tsop40       40             10.0              18.4             0.50
3       tsop48       48             12.0              18.4             0.50
4       tsop56       56             14.0              18.4             0.50

Table as JSON:
{"part number":{"0":"tsop28","1":"tsop28 \/ 32","2":"tsop40","3":"tsop48","4":"tsop56"},"pins":{"0":"28","1":"28 \/ 32","2":"40","3":"48","4":"56"},"body width \/ mm":{"0":8.1,"1":8.0,"2":10.0,"3":12.0,"4":14.0},"body length \/ mm":{"0":11.8,"1":18.4,"2":18.4,"3":18.4,"4":18.4},"lead pitch \/ mm":{"0":0.55,"1":0.5,"2":0.5,"3":0.5,"4":0.5}}