According IPC-610C Parg. 5.2.7 its per class 1, 2 and 3.

Minimum  vrtical length is 3.3mm (not include the bending radius and
shoulders).  If the component is heat dissipating, you may need space
between the PCB to the component body of minimum 1.5mm (total 4.8mm lead
length)

Best  Regards

ROKAH Reuven
Chief Engineer
ECI Telecom LTD.
Operations Division
30 Hasivim St. Petah-Tikva 49517
                 ISRAEL
Tel: 972-3-9266734    Mobile:972-55-786734
Fax: 972-3-9266480
e mail: [log in to unmask]



                      Stefano Riccardi
                      <stefano.riccardi         To:      [log in to unmask]
                      @DIADIX.IT>               cc:
                      Sent by: TechNet          Subject: [TN] pin lenght
                      <TechNet@LISTSERV
                      .IPC.ORG>


                      09/07/03 03:04 PM
                      Please respond to
                      "TechNet E-Mail
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                      Stefano Riccardi





Hi
a basic question:
with a 2.5mm tick PCB, what is the minimun lenght of a THT component pin?


Thanks

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