Approach to Quality

Development of Quality Control Programs

Quality System

Environmental Substance Management

RoHS Compliance Information

Lead-Free technology report

Halogen-free Activities

Certification of Quality and Environmental

Feedback from Customers

Quality Assurance Centers Worldwide

ROHM measures for Radio Active Substance contamination

ROHM measures for Radio Active Substance contamination

ROHM is taking following measures to ensure Non-Radioactive Supplies due to recent Nuclear Power Station disaster.

Geographical location about FUKUSHIMA Nuclear Power Station and ROHM production facility,
and Logistic flow to overseas customers.

(1) Japan Domestic Production facility

・Following 3 facilities are applicable.
1. LAPIS Semiconductor MIYAGI : 120km from FUKUSHIMA N.P.S. (LSI Wafer Process factory)
2. ROHM TSUKUKBA : 164km from FUKUSHIMA N.P.S. (Transistor Wafer Process factory)
3. ROHM Logistec : 814km from FUKUSHIMA N.P.S. (Logistic distribution center from Japan)
# There are other wafer process factories at Fukuoka / Okayama, and LSI assembly site at Miyazaki,
500km away from FUKUSHIMA N.P.S., so they arenot applicable.

Japan Domestic Production facility

(2) Overseas Assembly facility

・Wafer produced in LAPIS Semiconductor MIYAGI and ROHM TSUKUBA are mainly assembled at the following overseas assembly factories.

Overseas Assembly facility

(3) Transportation flow to overseas customer

 

・Applicable final products delivered to overseas sales office warehouse and/or Customers

Transportation flow to overseas customer  

As mentioned in above, closest production facilities from Fukushima N.P.S are LAPIS Semiconductor MIYAGI and ROHM TSUKUBA,
and they are semiconductor wafer process in clean room condition.
Produced wafer at those wafer factory will be used at final assembly factory in overseas.
Transportation from overseas assembly factory to overseas customer would be either direct shipment from overseas assembly factory or via Japan distribution logistic center.

 

Verification method on radioactive substantial contamination.

・Following verification method are implemented to confirm Non-Radioactive supplies during production and transportation.


(1) LAPIS Semiconductor MIYAGI / ROHM TSUKUBA

:

Official measurement result by The Ministry of Education,
Culture, Sports, Science and Technology of Japan at closest Monitoring Post from
each ROHM factory to be checked (Once/day) (Environmental Radioactivity level Unit : µSV/h)

(2) ROHM LOGISTEC

:

Final goods which contains wafer produced by two applicable wafer
production facilities to be checked on its surface of products and surface of wrapping
by using survey meter as sampling base.
(Machine : SAM940 produced by BNC Once/Day Measuring the nuclides cesium 137 and iodine 131)

Way of report

・ROHM is planning to implement above measure from 1st Jun. 2011.
Measurement result to be reported on ROHM Home Page.

Radiation amount measurement result
 May.2012     
 Apr.2012    (PDF  :  151KB)
 Mar.2012     (PDF  :  111KB)
 Feb.2012     (PDF  :  111KB)
 Jan.2012     (PDF  :  111KB)
 Dec.2011     (PDF  :  111KB)
 Nov.2011     (PDF  :  111KB)
 Oct.2011     (PDF  :  111KB)
 Sep.2011     (PDF  :  111KB)
 Aug.2011     (PDF  :  110KB)
 Jul.2011     (PDF  :  111KB)
 Jun.2011     (PDF  :  111KB)