BLM31KN121SH1L

Spec. No. JENF243A-9148-01 P.7/8
MURATA MFG.CO., LTD.
Reference Only
(2)Components location on P.C.B. separation.
It is effective to implement the following measures, to reduce stress in separating the board.
It is best to implement all of the following three measures; however, implement as many measures as possible
to reduce stress.
Contents of Measures Stress Level
(1) Turn the mounting direction of the component parallel to the board separation surface. A > D *1
(2) Add slits in the board separation part. A > B
(3) Keep the mounting position of the component away from the board separation surface. A > C
*1 A > D is valid when stress is added vertically to the perforation as with Hand Separation.
If a Cutting Disc is used, stress will be diagonal to the PCB, therefore A > D is invalid.
(3) Mounting Components Near Screw Holes
When a component is mounted near a screw hole, it may be affected by the board deflection that occurs during
the tightening of the screw. Mount the component in a position as far away from the screw holes as possible.
9-6. Mounting density
Add special attention to radiating heat of products when mounting the inductor near the products with heating.
The excessive heat by other products may cause deterioration at joint of this product with substrate.
9-7. Operating Environment
Do not use this product under the following environmental conditions, on deterioration of the Insulation
Resistance of the Ferrite material and/or corrosion of Inner Electrode may result from the use.
(1) in the corrodible atmosphere such as acidic gases, alkaline gases, chlorine, sulfur gases, organic gases and etc
(the sea breeze, Cl
2
, H
2
S, NH
3
, SO
2
, NO
2
,etc)
(2) in the atmosphere where liquid such as organic solvent, may splash on the products.
(3) in the atmosphere where the temperature / humidity changes rapidly and it is easy to dew.
9-8. Resin coating
The impedance value may change and/or it may affect on the product's performance due to high cure-stress of
resin to be used for coating / molding products. So please pay your careful attention when you select resin. In prior to
use, please make the reliability evaluation with the product mounted in your application set.
Perforation
Slit
A
B
C
D
Screw Hole
Recommended
Spec. No. JENF243A-9148-01 P.8/8
MURATA MFG.CO., LTD.
Reference Only
9-9. Cleaning Conditions
Products shall be cleaned on the following conditions.
(1) Cleaning temperature shall be limited to 60°C max. (40°C max. for IPA.)
(2) Ultrasonic cleaning shall comply with the following conditions, avoiding the resonance phenomenon
at the mounted products and P.C.B.
Power:20W/ max. Frequency:28kHz to 40kHz Time:5 min max.
(3) Cleaner
1.Alternative cleaner
Isopropyl alcohol (IPA)
2.Aqueous agent
PINE ALPHA ST-100S
(4) There shall be no residual flux and residual cleaner after cleaning.
In the case of using aqueous agent, products shall be dried completely after rinse with de-ionized water
in order to remove the cleaner.
(5) Other cleaning
Please contact us.
9-10. Handling of a substrate
After mounting products on a substrate, do not apply any stress to the product caused by bending or twisting to the
substrate when cropping the substrate, inserting and removing a connector from the substrate or tightening screw to
the substrate.
Excessive mechanical stress may cause cracking in the product.
Bending Twisting
9-11. Storage Conditions
(1) Storage period
Use the products within 6 months after delivered.
Solderability should be checked if this period is exceeded.
(2) Storage conditions
Products should be stored in the warehouse on the following conditions.
Temperature : -10°C to 40°C
Humidity : 15% to 85% relative humidity
No rapid change on temperature and humidity
Don't keep products in corrosive gases such as sulfur, chlorine gas or acid, or it may cause oxidization
of electrode, resulting in poor solderability.
Products should be stored on the palette for the prevention of the influence from humidity, dust and so on.
Products should be stored in the warehouse without heat shock, vibration, direct sunlight and so on.
Products should be stored under the airtight packaged condition.
(3) Delivery
Care should be taken when transporting or handling product to avoid excessive vibration or mechanical shock.
10 . ! Note
(1)Please make sure that your product has been evaluated in view of your specifications with our product being
mounted to your product.
(2)You are requested not to use our product deviating from the agreed specifications.
(3)The contents of this reference specification are subject to change without advance notice. Please approve our
product specifications or transact the approval sheet for product specifications before ordering.

BLM31KN121SH1L

Mfr. #:
Manufacturer:
Description:
FERRITE BEAD 120 OHM 1206 1LN
Lifecycle:
New from this manufacturer.
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