MHM305 Series data sheet
Ionizer modules
1. Key Features
Generates negative 20 million Ions typ. (pcs per cc)
MHM305 generates minimal ozone, less than 0.14mg per hour
Compact design with three ion element wire length options
Integrated high voltage power supply, perfectly matched with the ionizer
2. Description
The MHM305 Series is effective for applications such as air purification and deodorization by generating a large
amount of negative ions with minimal ozone. The MHM305 features an integrated high voltage power supply
integrated with the ion element. All these features are packaged in an elegant and compact form factor, able to fit
most application environments..
*For applications requiring higher ozone output, please see our MHM306 Series.
3. Circuit & dimension
3.1 Typical Application Circuit
3.2 Mechnical dimension
- Please see Fig.1 of the structure of Ionizer module
4. Rating
4.1 Operating Temperature ( Ambient )
- Ionizer Element : -10℃½+70℃
- High Voltage Power Supply (HVPS) : -10℃½+50℃
4.2 Operating Humidity
- 20%RH½80%RH ( no dew deposit )
The value of the ion amount and Ozone amount will decrease at low temperature and high
humidity. Therefore, the value of the current will be specified at 25±2℃ and 50±10%RH.
4.3 Part number (Ordering Guide) : MHM305 series
Series name
MHM305 series
Partes number
MHM305-01
MHM305-02
MHM305-05
Length of wire between power supply and Ion element
290mm
195mm
115mm
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
1/10
Dec,2016
MHM305 Series data sheet
Ionizer modules
4.4 Pin Function ( Input connector )
Connector No.
Connector
Pin number
1
CN1
B03B-XASK-1
(JST)
2
3
Signal
+12.0V
GND
Monitor voltage
4.5 Rating
Items
Input voltage range
Min.
+10.8
Typ.
+12.0
Max.
+13.2
Unit
Vdc
Input current
50
130
mA
Value of negative
ion amount
(Note 1,2)
Value of Ozone density
(Note 3)
600,000
20,000,000
-
pcs / cc
0.0
0.04
0.14
mg/h
Monitor voltage
2.10
2.50
2.90
Vdc
(Note 1) Ion amount measured at +12V input, +25 °C.
(Note 2)
Measurement conditions as per Fig.1a. Reference Section 4.4 for Pin Function.
The input voltage E(12.0V) applied between Pins 1 and 2 of connector CN1. Under this condition,
ion amount is measured using an Ion counter : NKMH-103, Hokuto electrnics.
(Note 3) MHM305 series connected as per Fig.1b, with fan and Teflon tube for air sampling using
an ozone dosimeter in (approx. 6.7L). The input voltage E (12.0V) will be loaded
between Pins 1 and 2 of connector CN1. Under this condition, ozone density will be measure
by the instrument after 3min. generation.
《
Fig.1a
》Ion
measurement
《
Fig.1b
》Ozone
Measurement
Ozone Monitor
10cm
Measuring BOX
BOX：6.7L
Ionizer Module
Ion counter
Ionizer Module
E
E
Fan
Earth Ground
Earth Ground
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
2/10
Dec,2016
MHM305 Series data sheet
Ionizer modules
5.
取り付け上の注意
Caution in Usage (Ion Element)
1）このカタログは、イオナイザモジュール単½での仕様であり、½用環境や取り付け状態、取り付け部周辺の構造、
材料などにより、イオン・オゾン発生量がカタログを満足しない場合があります。
This datasheet is representative of typical application conditions. If used outside of our specification, Ion/Ozone
amount may not meet same performance levels.
2）ご½用の際には機器にイオナイザモジュールを取り付け、イオン・オゾンの発生量をご確認ください。
Please make sure the Ion/ozone generation in your end product has been evaluated in view of your specifications with
our product being mounted appropriately.
3)特に、開口部周辺に金属½やプラスチックが存在しますと、発生したイオン½オゾンが吸収される場合があります。
Please note that some metal or plastic parts located near the Ionizer element can affect the amount of Ion/ozone
amount. Please follow the clearance/spacing recommendations on section 7.1
！
△
6.
警告
Warning (Ion Element)
発生子直近では高濃度のオゾンが発生します。高濃度のオゾンを長時間吸い続けると、人½に悪½響を及ぼす恐れがあ
りますので、通電中は高濃度オゾンを吸引しないよう人½から距離を取ってご½用願います。
High-density ozone will be generated closest to the Ionizer element. Exposure to high-density ozone for prolonged
periods can be harmful to the human body. Please maintain appropriate distance from the human body so as not to
breathe high-density ozone while the Ionizer is operational (input voltage applied).
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
3/10
Dec,2016
MHM305 Series data sheet
Ionizer modules
！
△
7.
½用上の注意
Caution in using (High Voltage)
7.1
イオナイザモジュールは高圧部品ですので取り扱いを誤ると、放電および発煙の危険性がありますので、下記の項目
を厳守下さい。
The Ionizer module is a high voltage device and may cause discharging or combustion with mishandling.
Please observe following items.
7.1.1
発生子と駆動電源のセット配½に際しては、高圧部品であることを考慮していただき、信頼性向上の為、½電½部
（シャーシ等）との距離を下図の範囲以上確保し取り付けて下さい。
万一、½電½部との距離が不十分な場合は、½電½部とイオナイザモジュールとの間で放電し、発煙・発火の原因
となることがあります。
(下記は、
イオナイザモジュールを高圧部品と考えた場合の絶縁距離を示したものです。 イ
オン・オゾン発生には、これ以上の距離確保を必要とすることがあります。)
Don’t place other electrodes ( metal chassis wires. electronic parts. etc.) or conductive materials within Keep
distance for 4.3mm or more of the high voltage portion of Ionizer and power supply.
If the distance between Ionizer module and the other low potential electrode is insufficient,
sparking may occur and it may cause smoking and combustion.
DIM :
（mm）
確保距離
L(mm) =
定格電圧:
4.3(kV) × 1(mm/kV)
Recommended distance L(mm) = Rated Voltage: 4.3(kV) × 1(mm/kV)
高圧電源の周辺に導電½（金属、電線、部品等）を近接配½する場合は、4.3½½以上離してください。
斜線部に配線を近接しないでください。
Keep distance for 4.3mm or more, when location the electric conductor (Metal, wire or components, etc.)
around this high voltage power supply. There is no exposed wire at shadow area.
7.1.2
挿入後リード線を持っての搬送は行わないで下さい。
Make sure not to hold insertion leads when transferring the high voltage power supply.
7.1.3
ハロゲン化炭水化水素（４塩化炭素、フロン等）
、芳香族炭化水素（トルエン等）
、脂肪族炭化水素、その他発生子
のケース材料など絶縁材料を膨½、溶解する危険性がある溶剤、接着剤、グリス及び油類は、絶縁劣化をひきお
こす危険性がありますので、上記物質、またはそれに類するものは½用しないで下さい。
Don’t contact the Ionizer with homogenized hydrocarbon (Carbon tetrachloride, Freon, etc.) or
with aromatic hydrocarbon (Toluene, etc.). These solvents cause crack or damage to Ionizer parts. Don’t use
any organic solvent, adhesive agent, grease or oil, which include above bad solvents or sparking may occur and
it may cause smoking and combustion.
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
4/10
Dec,2016
MHM305 Series data sheet
Ionizer modules
7.1.4
固定用ビス、手袋、治工具類に油類が付着しないようにして下さい。油類の付着によりケース材料が侵され、絶縁
劣化を引き起こす危険性があります。
When handling this module, make sure not to apply any oil to screws, gloves or tools. These oils may affect the
insulation materials for housing of Ionizer to cause the insulation deterioration.
7.1.5
次のような環境条件では絶縁劣化をひきおこす危険性がありますのでご½用いただけません。
Under following circumstances, this device can’t be used. If device will be used under such
circumstances, dielectric strength may be down and sparking may occur.
①腐食性ガス雰囲気（CL
2
, H
2
S, NH
3
, SO
2
, NO
X2
等）
Corrosive gas atmosphere (CL
2
, H
2
S, NH
3
, SO
2
, NO
X
etc. )
②水、油、有機溶剤等の液½がかかる所
Cannot be splashed with water, oil, organic solvent
③塵埃の多い所（清浄度：class
100K
以上）
Dusty atmosphere（Cleanness：more class than 100K）
④高湿度雰囲気（湿度：95%RH
以上）
high humidity atmosphere (Humidity：more than 95%RH)
⑤½風の直接あたる所
Sea breeze atmosphere
⑥その他上記の①½⑤に準ずる所
Other atmosphere corresponding
①½⑤
7.1.6
イオナイザモジュールに過度の衝撃(0.5N½m 以上)を与えると、ケースおよび樹脂等の絶縁材料にクラックが生じ、
絶縁劣化をひきおこす危険性がありますので、輸送及び取り扱い時に、衝撃を与えないで下さい。
電源部のコアはワレモノのため、½下等の衝撃を絶対与えないで下さい½ ½下させた場合は絶対に½用しないで下さ
い。
Don’t subject the device to a shock (more than 0.5N½m) during handling or transport. If device will be given a hard
shock, dielectric material (case, molding resin, etc. ) may crack and dielectric strength may be damaged.
Do not apply impact to the transformer core such as dropping since it is fragile. Should the Ionizer module be dropped
by accident, absolutely do not use it.
7.1.7
イオナイザモジュールは高圧部品であり、感電する危険性がありますので、通電中にイオナイザモジュール本½に
触れないで下さい。
This device has a high voltage portion. Please apply appropriate safety precautions to prevent from receiving an
electrical shock.
7.1.8
頻繁に間欠動½させますと、12V 入力のヒューズにストレスを与えます。 入力電圧は、半導½スイッチ等を用い
累積スイッチ回数を
100
万回以下 に抑えてください。
To prevent fuse stress, please control input switching time less than 1Million times totally under recommended circuit
which is using semiconductor .
7.1.9
入力電圧印加時は図-1 で規定する灰色内としてください。また入力電圧を遮断後、再び印加する場合は図-1 で規
定する間隔(又は
Vin=1V
以下になる）をとってください。
Vin should be in gray area of Fig.1 when Vin input. And it should take the time(Vin=1V or less) when Vin re-input
after turn off.
Vin
12V
operating
0V
50ms or less
< Fig.1 The wave form of Vin >
1sec. or more
Time
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to change or our
products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product
specifications or transact the approval sheet for product specifications before ordering.
5/10
Dec,2016
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