This part is a kind of semiconductor called 1N3671.

Function of this product has Silicon-Power Rectifiers.

Manufacturers : Diotec Semiconductor

Image and pinout :

Some of the text within the PDF file :

1N 1199A ... 1N 1206A, 1N 3671, 1N 3673 PBY 271 ... PBY 277 Silicon-Power Rectifiers Nominal current – Nennstrom Repetitive peak reverse voltage Periodische Spitzensperrspannung Metal case – Metallgehäuse Weight approx. – Gewicht ca. Recommended mounting torque Empfohlenes Anzugsdrehmoment Silizium-Leistungs-Gleichrichter 12 A 50...1000 V DO-4 5.5 g 18 ± 10% lb.in. 2 ± 10% Nm Dimensions / Maße in mm Standard: Cathode to stud / am Gewinde Index R: Anode to stud / am Gewinde (e.g. 1N 1199 A/R) Maximum ratings Type Typ 1N 1199 A 1N 1200 A 1N 1202 A 1N 1204 A 1N 1206 A 1N 3671 1N 3673 = = = = = = = PBY 271 PBY 272 PBY 273 PBY 274 PBY 275 PBY 276 PBY 277 Repetitive peak reverse voltage Periodische Spitzensperrspannung VRRM [V] 50 100 200 400 600 800 1000 TC = 100/C f > 15 Hz TA = 2 [ ... ]

1N3671 PDF Datasheet Download