Japan handset local SAR limit (head)
2 W/kg averaged over any 10 g of tissue and any six minutes, mandatory for equipment used close to the head since June 2002.
Regulatorygeneral publicequipment used near the head
Last verified 12 August 2026.
- Limit value
- 2 W/kgRegulatory value — legally enforceable — Equipment with an average power below 20 mW is exempt. The 10 g averaging mass matches the EU/ICNIRP convention, so Japanese figures are comparable with European declared SAR values but not with U.S. FCC values averaged over 1 g against a 1.6 W/kg limit.sources: japan-mic-rrpg
- Quantity
- specific absorption rate
- Frequency band
- equipment used near the head
- Population
- general public
- Set by
- Japan Radio Radiation Protection Guidelines (電波防護指針) (Radio Radiation Protection Guidelines 1990/1997; enforced through 電波法施行規則 art. 21-3 and appended table 2-3-2 (as amended 2017))
- Kind
- Regulatory — legally enforceable
- Averaging time
- 6 minutesA measurement must use the same averaging before it can be compared with this value.
Related records
- ICNIRP 2020 local SAR basic restriction (head and torso)
2 W/kg averaged over 10 grams of tissue for the general public — a different averaging mass than the FCC's 1 g, which is why SAR numbers are not directly comparable between regions.
Exposure limits
- FCC SAR limit for phones and portable devices
1.6 W/kg averaged over any 1 gram of tissue — the number quoted on U.S. phone SAR sheets — plus 0.08 W/kg whole-body.
Exposure limits
- Why does the same phone have two different SAR values?
U.S. SAR is averaged over 1 g against 1.6 W/kg; EU/ICNIRP SAR over 10 g against 2 W/kg. The numbers are not interchangeable, and body-worn values only hold at their declared separation distance.
Direct answers
Sources
- japan-mic-rrpg Possible Health Effects on the Human Body from Radio Wave Exposure — Radio Radiation Protection Guidelines — Ministry of Internal Affairs and Communications, Japan. government, link checked 2026-08-12.
- japan-radio-law-table 電波法施行規則 第21条の3 および別表第2号の3の2 — 電波の強度の値 (Radio Law Enforcement Regulations, art. 21-3 and appended table 2-3-2: permitted radio-wave field strengths) — 総務省 電波利用ポータル (Ministry of Internal Affairs and Communications, Japan). regulation, link checked 2026-08-12.
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