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FMN-3306S Datasheet(PDF) 6 Page - Sanken electric

Part # FMN-3306S
Description  Fast Recovery Diode
Download  7 Pages
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Manufacturer  SANKEN [Sanken electric]
Direct Link  http://www.sanken-ele.co.jp/en
Logo SANKEN - Sanken electric

FMN-3306S Datasheet(HTML) 6 Page - Sanken electric

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Fast Recovery Diode
Because reliability can be affected adversely by improper storage environments and handling methods, please observe the
following cautions.
Cautions for Storage
 Ensure that storage conditions comply with the standard temperature (5 to 35°C) and the standard relative humidity
(around 40 to 75%); avoid storage locations that experience extreme changes in temperature or humidity.
 Avoid locations where dust or harmful gases are present and avoid direct sunlight.
 Reinspect for rust on leads and solderability of the products that have been stored for a long time.
Cautions for Testing and Handling
When tests are carried out during inspection testing and other standard test periods, protect the products from power
surges from the testing device, shorts between the product pins, and wrong connections. Ensure all test parameters are
within the ratings specified by Sanken for the products.
Remarks About Using Silicone Grease with a Heatsink
 When silicone grease is used in mounting the products on a heatsink, it shall be applied evenly and thinly. If more
silicone grease than required is applied, it may produce excess stress.
 Volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. Silicone
greases with low consistency (hard grease) may cause cracks in the mold resin when screwing the products to a heatsink.
Our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product
life, are indicated below:
Shin-Etsu Chemical Co., Ltd.
Momentive Performance Materials Inc.
Dow Corning Toray Co., Ltd.
Cautions for Mounting to a Heatsink
 When the flatness around the screw hole is insufficient, such as when mounting the products to a heatsink that has an
extruded (burred) screw hole, the products can be damaged, even with a lower than recommended screw torque. For
mounting the products, the mounting surface flatness should be 0.05mm or less.
 Please select suitable screws for the product shape. Do not use a flat-head machine screw because of the stress to the
products. Self-tapping screws are not recommended. When using self-tapping screws, the screw may enter the hole
diagonally, not vertically, depending on the conditions of hole before threading or the work situation. That may stress the
products and may cause failures.
 Recommended screw torque
Recommended Screw Torque
TO-220 , TO-220F
0.490 to 0.686 N・m
(5 to 7 kgf・cm)
TO-3P , TO-3PF
0.686 to 0.882 N・m
(7 to 9 kgf・cm)
0.588 to 0.784 N・m
(6 to 8 kgf・cm)
 For tightening screws, if a tightening tool (such as a driver) hits the products, the package may crack, and internal stress
fractures may occur, which shorten the lifetime of the electrical elements and can cause catastrophic failure. Tightening
with an air driver makes a substantial impact. In addition, a screw torque higher than the set torque can be applied and
the package may be damaged. Therefore, an electric driver is recommended.
When the package is tightened at two or more places, first pre-tighten with a lower torque at all places, then tighten with
the specified torque. When using a power driver, torque control is mandatory.
 Please pay special attention about the slack of the press mold. In case that the hole diameter of the heatsink is less than 4
mm, it may cause the resin crack at tightening.
 When soldering the products, please be sure to minimize the working time, within the following limits:
260 ± 5 °C
10 ± 1 s (Flow, 2 times)
380 ± 10 °C 3.5 ± 0.5 s (Soldering iron, 1 time)
 Soldering should be at a distance of at least 1.5 mm from the body of the products.

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