The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 10Watt BTD Series BTD series is a thin, high efficiency, low noise isolated DC-DC converter. Contrived to adopt new circuit to achieve miniaturization. Circuit construction is high-efficiency and simple. Adjustable output voltage and remote ON/OFF control has been added as a new function. <Features> -Adjustable Output Voltage -Metallic Shield Cover -Remote ON/OFF Control -Halogen-Free PCB Used -Dual Power Supply usable as Single Power Supply ~Between Primary and Secondary Combination -Isolation Voltage AC500V Capacitance approx. 1,100pF -Built-in Over-Current Protection Circuit -Operating Temp. Range -40C to +85C -Built-in Low Input Voltage Protection Function (Temp. Derating required) -Built-in Over Input Current Protection Element -RoHS Compliance -No Electrolytic Capacitor, No Tantalum Capacitor <Model, Rating> Table 1 Model Input VV | Output V Output | Line Reg. |Load Reg.| Noise Efficiency Vde Vde mA mv(max.) | mV(max.) | mVpp(typ.) | _%(typ.) BTD05-03S250X_ 3.3 0 to 2500 20 40 40 _ 84 BTD05-05S200X 4.5 to 9 5 0 to 2000 ee : 84 BTDO5-12S80X | _12(15) | 0 to 800 (640) 40 | 100 30 84 BTD05-12W40X +12(+15)| 0 to 400 (320) 80 600 83 BTD12-03S250X 3.3 __0to2500 | 20 40 40 | 84 BTD12-05S200X_ 9to 18 5 0 to 2000 _ : - | 86 BTD12-12S100X 12(15) | 0 to 1000 (800) 40 100 30 _ 88 BTD12-12W45X +12(+15) | 0 to 450 (360) 80 600 86 BTD24-03S250X | 3.3 | Oto 2500 20 40 40 84 BTD24-05S200X __ 18 to 36 5 Oto2000 | | 86 BTD24-12S100X _12(15) | Oto 1000 (800)| 40 100 30 87 BTD24-12W45X +12(+15) | 0 to 450 (360) 80 600 86 BTD48-03S250X | __ 3.3 0 to 2500 20 40 40 | _ 84 BTD48-05S200X _ 36 to 76 \ 5 0 to 2000 | _ 86 BTD48-12S100X __12(15) | 0 to 1000 (800) 40 __100 30 88 BTD48-12W45X +12(+15) | 0 to 450 (360) 80 600 86 Note1 : Specify the type in the X of the model name. D:DIP type, S:SMD type Ex.) DIP type: BTD05-03S250D, SMD type: BTDO5-03S250S Note2 : The output voltage inside () is when it is short between Vadj and -Vout. Note3 : The output current inside () is when adjusted to the max. output voltage. 1 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix: 10Watt BTD Series <Specification> Table2 Input Voltage Range Refer to Table 1 Rating Output Voltage 3.3V3%, 5V43%, 12V23%, +12V+5% (Vadj pin at open) Adjustable Output Voltage _Range 3.15 to 3.6V (For 3.3V), 4.75 to 6.0V (For 5V), 11.4 to 15V (For 12V), +11.4 to +15V (For 12V) _Line Regulation | Load Regulation Temp. Regulation Refer to Table1 (| (Rating Output, for the regulation of Input Volt iput Voltage Range of Table1) Refer to table1 (Rating Input/Output Voltage, for the regulation of load 0 to 100% (Output is when load is at balance)) 80mV max. (For 3.3V, 5V), 200mV max. _ (For 12V), 300mV max. (For +1 2) (Input/Output rating, For operating temp. -40C to+50C) _Ripple/Noise Refer to Table 1 (Rating Input/Output, At room temp, 20MHz bandwidth) Efficiency 83% to 88% typ. (Rating Input/Output, At room temp., Refer to table 1) _ Over Current Protection Circuit Over Voltage Protection Circuit long time over current Condition. Operates at 105% or more rating load current, auto recovery type. . Avoid 30 second or more None Low Input Voltage Available (Refer to p.11) Protection : - _ Over Input Current an . . Protection Built-in fuse in the input (refer to p.12) | / ; Remote ON/OFF Between 2pin (ON/OFF) and 3pin (-Vin) : Output goes OFF at open, Output goes ON when in _ Stand by Current short. (Refer to p.9) 6.0 - 7.6mA typ. (Depend on n the model) ee Isolation Voltage Input - Output, Input - Case, Output - Case A ACS500V 1min. _ Isolation resistance Primary-Secondary _ capacitance | Approx. +100pF (Depend on the model) Operating Temp. Range Storage Temp. Range _ | Operating Temp. -40C to +85C (Need temp. derating from 50C) Storage Temp. -40C to +85C Humidity Range Humidity range 95%R.H. max. (Max. wet bulb ) temperature e 38C, non-condensing) Cooling Condition | Air Convection (Set in a place where good convection is ensured) Vibration 10 to 55Hz All amplitude 1.52mmp-p (2 hours in each orthogonal axes), _ Sweeping time 15min. _ Shock _ | Acceleration 100G (3directions, 3times each, 18times in total), Persistent time 6ms _ _ Weight _|.10.0g typ. Outline DIP type W=22.6 L=35.9 H=8.4 typ. | (mm) (For detail dimensions, refer to the outline on p.7 7) SMD 1 type W=22.6 L=38.9 H=8.5 typ.(mm) (For detail dim dimensions, refer to 9 the outline on p.8) NOTE : Unless condition is specified, above specification is regulated as rating value. Bellnix DC-DC Converter 2 BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix: 10Watt BTD Series 1- Application Range This datasheet applies to the isolated DC/DC converter, BTD series. 2- Model/Rating Rating Input : Model Voltage Rating Output Package BTD05-03S250D __ ___ DIP. - BTD05-03S250S 3.3V, 2500mA SMD _BTDO05-05S200D __ _DIP BTD05-05$200S pCsV 5.0, .2000mA SMD _BT DO5-1 2880D 12V. 800mMA emesssaem DIP _ BTD05-12S80S SMD __BTDO5-12W40D__ _DIP BTD05-12W40S #12V, each400mA SMD BTD12-03S250D _| ___ DIP. ~BTD12-038250S 3.3V, 2500mA SMD BTD12-05S200D__ ON si BTD12-05S200S pc12V 5.0V, 2000mA SMD : BID12-1 2S1 00D 12V.1000mA 3 |-> DIP_ BTD12-12S100S SMD BTD12-12W45D__| __DIP_ BTD12-12W45S #12V, each450mA SMD | BTD24-03S250D ___DIP_ BTD24-03S250S 3.3V, 2500mA SMD BTD24-05S200D__ DIP BTD24-058200S pco4V 5.0V, 2000mA SMD BTD24-12S100D _ DIP 12V, 1000mA SMD OD a 412V, each450mA ap DIP 3.3V, 2500mA 5 DIP BTD48-05S200S | noygy 5.0V, 2000mA SMD BTD48-12S100D__ tov 1000ma. |__ DIP BTD48-12S100S SMD __BTD48-12W45D _ DIP BTD48-12W45S #12V, each450mA SMD 3- Environmental Condition 3-1 Temp. range When Operating : -40C to +85C (Derating required from 50C) When Storage : -40C to +85C 3-2 Humidity Range When Operating : 95%R.H. max. (Max. wet-bulb temp. 38C, non-condensing) When storage : 95%R.H. max. (Max. wet-bulb temp. 38C, non-condensing) 3 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 10Watt BID Series 4-Specification 4-1 Input Condition, Output Characteristics When condition is not mentioned in this data sheet, input is rating input, output is rating output, ambient temp. is 25C+5C. Max. Output Voltage : : <f Input Output Output Constancy. Output Ripple/Noise Efficiency Model Voltage Voltage Current input | Load | Temp ()typ % A * *| (mVp-p)typ./ max. . ) (V) (mA) | RD | anvy |4cmvy| (mVe-P)tye BTD05-03S250X 3.323% | Oto2500 | 20 | 40 | 80 | 40/120. 84 -O5S200X _ 5.033% | Oto2000 | 20 | 40 | 80 | 40/120 | 84 45109 1243% 0 to 800 40 100 | 200 30/120 84 5to pe SO Seda tit a a Sere Lap a | _ 1543% | Oto64o | 40 | 100 | 200 | 30/120 84 BTDOS-12W40X _#1245% |0t0400x2| 80 | 600 | 300 | 30/120 | 83 __ +15+5% | O0to320x2/| 80 600 | 300 30 / 120 83 BTD12-038250X 3.343% | Ot02500 | 20 | 40 | 80 | 40/120 | 84 BTD12-05S200X__ 6.023% | Oto2000 | 20 | 40 | 80 | 40/120 86 BTD12-128100X 91018 124+3% 0 to 1000 40 100 | 200 30/120 88 _ 0 | = je | ev NE Ew ruse a 15#3% | Oto800 | 40 | 100 | 200 30/120, | 88 BTD1-1avask _#1285% |0t0450*2| 80 | 600 | 300 | 30/120 | 86 __ 41545% | Oto360x2/| 80 600 30/120 86 BTD24-03S250X 3.323% | 0to2500 | 20 | 40 40/420 | 84 BTD24-05S200X _| _5.023% | Ot02000 | 20 | 40 40/120 | 86 BTD24-128100X 18 to 36 1243% 0 to 1000 40 100 30/120 87 . 0 _ieeV io Le FM he ~ EO 153% | Oto800 | 40 | 100 | | 30 120_ _ 87 BTD24-1 2 WAX 21226% |0t0450x2| 80 | 600 | 300 | 30/120 | 86 +15+5% | O0to360x2} 80 600 | 300 30/120 BTD48-03S250X 3.323% | 0t02500 | 20 | 40 | 80 40/120 BTD48-05S200X 5.043% Oto2000 | 20 | 40 | 80 40/120 BTD48-128100X 36 to 76 424+3% 0 to 1000 40 100 | 200 30/120 7 a eS heel oN PES _1543% | Oto800 | 40 | 100 | 200 | 30/120 | _88 DAB 1OWABX 1226% |0t0450x2| 80 | 600 | 300 | 30/120 | 86 __ +15+5% |O0to360x2/} 80 600 | 300 30 / 120 86 *1 Specify the package in the "X. D: DIP type(Flow) S: SMD type(Reflow) *2 Output Voltage includes input regulation, load regulation(Balance Load), temp. regulation. *3 2 output type is when 2 output type has same current. *4 For temp. regulation -40 to +50C. *5 Bandwidth 20MHz *6 When Rating Input Voltage, Max. Output Current. 4 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 10Watt BTD Series 4-2 Capacity of External Capacitor This product has limit to the capacity of external condenser. Please refer to the below table. Output External Capacitor I Model +output Ta aa side BTDXX-03SXXX 0 to 470uF BTDXX-05SXXX 0 to 470pF | _ BTDXX-12SXXX 0 to 220yF ' BTDXX-12WXXX Oto 100uF * 0 to 100yF *1 Sum of C2 and C3 in standard connecting circuit in section 6, (1) *2 Sum of C2 and C4 in standard connecting circuit in section 6, (2) *3 Sum of C3 and C5 in standard connecting circuit in section 6, (2) 4-3 Temp. Derating Air Convection 100 Load Rate(%) ohn Oa O oooclUu6UuU[UmUcrPWUcOlUc SO 20 10 0 -40-30-20-10 0 10 20 30 40 50 60 70 80 90 Ambient Temp.(C) 5 Belinix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix: 10Watt BID Series 4-4 Measurement Circuit #Vin +Vout sw Open = Output OFF Short = Output ON Vin BTD-S Series 2 Load SW2 Open: Vout = 3.3V, 5V, 12V Short: Vout = 3.3V-3.6V = 5V-6V = 12V->15V -Vin Vout C1: 0.1 uF (Multilayer Ceramic Capacitor) +Vout Load sw3 Open = Output OFF BTD-W Series 2 5 Short = Output ON Ssw4 Open: Vout = +12V Short: Vout = +15V 2% Load 6 * -Vout (A) Vadj| sw4 , ; ; C2, C3: 0.1 4 F (Multilayer Ceramic Capacitor) Osei | losepe Coaxes cable: 502, 1.5m (Measur ing R1: 51@ Ripple/Noise) C4: 0.1 uF 4-5 Additional Function Article Specification / Standarization Condition Over Current Operates above 105%, Protection Circuit Auto-recovery type Over Voltage None Protection Circuit Low Input Voltage Available Protection Function Output Voltage 3.15 to 3.6V(BTDXX-03SXXX) By External Resistor. Adjustable range 4.75 to 6.0V(BTDXX-05SXXX) Refer to 7-2 11.4 to 15V(BTDXX-12SXXX) +11.4 to +15V(BTDXX-12WXXX) ON/OFF Control Output ON at Low(0 to 0.4V) Refer to 7-1 Output OFF at open 4-6 Isolation Voltage, Isolation Resistance 1- Isolation Voltage Input - Output, Input- Case, Output- Case :AC500V, imin. 2- Isolation Resistance Input - Output, Input- Case, Output - Case : Over 50MOQ(at DC500V) 6 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 5. Outline and Pin 5-1 DIP type 1- Outline 36.4 max. \ 10Watt BTD Series | 23.1 max. (22.6 ts a a a Tt s 3.5] 8.5 max. Sk } *L te 25.4 |__|.) 35.96 typ. s) No.10,11 - _ 2 oO <0//\ _ co, o ey aK No.8,9 19| 7-0.3X0.6 S| S| co - Lo = S co Foy] = {2.7 i) 7* / The outline of the 8 to 11 pinis the 3 . figure where each pin is viewed from et Bottom View Model name and Manufacturing lot No. is indicated on 2- Recommended dimension of the board, Pin function the front side of each pin. Dimensions : mm Tolerance unless otherwise specified : +0.5 upper side. 3) 1,3:08, 25.4 5! Pin Function " @ 12 8 oa BTD-S BTD-W 1 f 62 1 +Vin +Vin i) 2 Upper surface pattern is 6 % 2 ON/OFF ON/OFF Ss prohibited due to stand offs % oll 3 -Vin -Vin oy. 4 NC -Vout 2-64.5 ba io 5 -Vout Common Shoot 6 Vadj Vadj 11 ae 8 35.56 7 +Vout +Vout . 8,9 Stand off Stand off Top View 10.11 Connected to Connected to Dimensions : mm Case Case Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter 10Watt BTD Series e 6 Bellinix 5-2 SMD type {-Outline ie 36.4max. Sy .< 23.1max. (22.6 typ.) _- | 7 a c | E x | oO DESEO, o i 3 = a ae 1 = S FRPP Me. K : J 18 J 5. 06 K | 38.86 Coplanality below 0.15 = nee _ = co co s x a o Lo So Dimensions : mm dA, Tolerance without otherwise specified : +0.5 & ' 3 Bottom View Model name and Manufacturing !ot No. is indicated on upper side. 2- Recommended dimension of the board, Pin function 8 #3 ; i A ' t4 7 = ; cI ah i Upper Surface pattem is 6 | S| So : prohibited because case is Cc A = 1 =| near ' 8| i2 54 1, {$a T [=I} 3 i } 1 S| 3 4i Ay i| | by: Sienennens R 32.) the _ 34.6 2>]- fer 32 S L. 41.0 ,| Top View Dimensions : mm Bellnix DC-DC Converter Pin Function BTD-S BTD-W 1 +Vin +Vin 2 ON/OFF ON/OFF 3 -Vin -Vin 4 NC -Vout 5 -Vout Common 6 Vadj Vadj 7 +Vout +Vout BDD20070926The Fifth Generation, Ultra Small Size, lsolated DC-DC Converter Bellnix 6. Standard Connecting Circuit (1) BTD-S Series 10Watt BTD Series +Vin 1 +Vout +Vin | 4 + = C1 + C2m C3 Load Vin} 4 BTD-S - Series -Vout ; sw2 swt Open: Vout = 3.3V, 5V, 12V swi 2 sw2 Short: Vout = 3.3V-3.6V Open = Output OFF ON/OFF S = 5V-6V Short = Output ON Vadj = 12V-15V C1: 47 uF C2: 47 UF C3: 0.47 uF (2) BTD-W Series +Vin ; +Vout +Vin | oq C2mz -z C4 Load T Common Vin} BTD-W C3 a & C5 Load . Series Aven oa swi sw e_|., Y sw2 sw2 Open = Output OFF ON/OFF Open: Vout = +12V Short = Output ON Vadj Short: Vout = 15V C1: 47 UF C2, C3: 47 uF C4, C5: 0.47 uF 7. Function 7-1 ON/OFF Control By using ON/OFF control function, ON/OFF of the output without connecting and disconnecting the input can be controlled. Between Vin pin (Pin3) and ON/OFF pin (Pin2) Low (0 to 0.4V. 1mAmax.) : Output ON Open (Open voltage : +Vin max.) : Output OFF ON/OFF Bellnix DC-DC Converter +Vin 9 BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 10Watt BID Series 7-2 Adjustable Output Voltage Output voltage can be set as follow when Vadj pin and -Vout pin is short. Please open this pin when not adjusting the output voltage. Output voltage to connection of Vadj pin Model Open Short to -Vout BTDXX-03SXXX 3.3V 3.6V BTDXX-05SXXX 5.0V 6.0V BTDXX-12SXXX 12V 15V BTDXX-12WXXX +12V +15V Output voltage is adjustable by connecting resistor between Vadj pin and +Vout pin. (Or between Vadj pin and -Vout pin) Note : When adjusting the output voltage, please operate below max. power 7-2-1 To lower the output voltage Output voltage can be lowered by connecting resistor Rb between Adjustable Output Pin (Vadj) and Plus Output Pin (+Vout). Calculation is as below. (Unit of Rb is [kQ]). BTD-S Series BTD-W Series - +Vout 7 +Vout Rb _ i Load . aq) Vadj 6 3 Load 5 Common Load |=Vout * veut Output Voltage : Vo[V], Connecting resistor : Rb[kQ] BTDXX-03SXXX Vo = 1.26 x (91.5 + 2.62 Rb) / (39.6 + Rb) Rb = (39.6 Vo 115.3) / (3.30 - Vo) Adjustable range is below to 3.15V. (Rb262) BTDXX-O5SXXX Vo = 1.26 x (84.8 + 3.98 Rb) / (31.8 + Rb) Rb = (31.8 Vo 106.85) / (5.01 - Vo) Adjustable range is below to 4.75V. (Rb2 160) BTDXX-12SXXX Vo = 1.26 x (201 + 9.53 Rb) / (57 + Rb) Rb = (57 Vo 253.26) / (12.01 - Vo) Adjustable range is below to 11.4V. (Rb2620) BTDXX-12WXXX Vo = {1.26 x (429 + 19.1 Rb) / (103 + Rb)}/2 Rb = (206 Vo - 540.54) / (24.07 - 2 Vo) Adjustable range is below to 11.4V. (Rb2 1500) 10 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 7-2-2 To raise the output voltage Output voltage can be raised by connecting resistor Ra between Adjustable Output Pin (Vadj) and Minus Output Pin (-Vout). Calculation is as below (Unit of Ra is[kQ]). BTD-S Series > +Vout Vadj Ra -Vout Output Voltage : Vo[V], Connecting resistor : Ra[kQ] BTDXX-03SXXX Vo = 1.26 x (91.5 + 2.62 Ra) / (32 + Ra) $ Load Ra = (115.3 - 32 Vo) / (Vo 3.30) BTDXX-05SXXX Vo = 1.26 x (84.8 + 3.98 Ra) / (17.8 + Ra) Ra = (106.85 - 17.8 Vo) / (Vo - 5.01) BTDXX-12SXXX Vo = 1.26 x (201 + 9.53 Ra) / (16.9 + Ra) Ra = (253.26 16.9 Vo) / (Vo - 12.01) BTDXX-12WXXX Vo = {1.26 x (429 + 19.1 Ra) / (18 + Ra} /2 Ra = (540.54 ~ 36 Vo) / (2 Vo - 24.07) 7-3 Output Over Current Protection Function Output voltage will be lowered when output current is in state of over current and start operating over current protection circuit. (Over current protection set point : 105 to 250% of rating current value) It will automatically recover when over current state is released. In order to avoid from damage, please do not hold the over current state for more than 30sec. 10Watt BTD Series BTD-W Seires 5 +Vout Load 5 Common 6 Wad Ra Load a -Vout If by any reason does not auto recover after releasing, please switch off or off the output at ON/OFF control and reactivate. 7-4 Low Input Voltage Protection Function This product built-in the low input voltage protection function to avoid malfunction at low input voltage. Start-up operation and termination voltage range is within the below table. Bellnix DC-DC Converter Commencing operation Model Termination Voltage BTDO5 3.0 to 4.5V BTD12 6.0 to 9.0V BTD24 13 to 18V BTD48 27 to 36V 11 BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 7-5 Input Circuit Protection Circuit 10Watt BTD Series Fuse is built-in at input in order to protect circuit at secondary side when overcurrent flows to input by some abnormalities. Rating current and fusing current of the Built-in fuse is as below table. To assure fusing at abnormality, current capacity of power supply should be more than fusing current which is stated in below table. Model Rating Current Fusing Current BTDO5 10.0A Above 20.0A BTD12 5.0A Above 10.0A BTD24 2.5A Above 5.0A BTD48 1.25A Above 2.5A 8. An example method to prevent inverse connection of input power supply. This product will be damaged when input polarity is connected reversely. Please add protection circuit when connection may be reversed. Below diagram is an example of using fuse and diode. FUSE +Vin Vin Dia C1 ON/OFF Bellnix DC-DC Converter -Vin BTD-S Series +Vout C272 C3 -Vout 12 BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Bellnix 10Watt BTID Series 9. Soldering Conditions Soldering is to be executed under the following conditions. 1- Soldering Iron (DIP Type, SMD Type) 380C 3sec. max 2- Soldering Dip (DIP type) 260C 10sec. max 3- Reflow (SMD type) Reflow Temp. Profile Solder Sn-3Ag-0.5Cu A | 1.0 to 3.0C/s A | Ty: 150+10C Ty2: 170+10C Ty1 to Ty2: 40 ~ 100s B | 1.0 to 4.0C/s B'| TP: 245Cmax. Above 225C : 20 to 40s C | 1.0 to 5.0C/s TP 225 Ty2 Ty1 Surface Temp. (C) A A' B: B' Cc Soldering Dip Time(s) Do not vibrate during reflow. Reflow can be done only once. (Backside mounting is not possible) NOTE: Eutectic solder can be used within condition as above. 10. Material of Pin and case Pin : Phosphor bronze (Ni Foundation Sn Plating) Case : SPCC (Ni Plating) 11. Vibration / Shock Test Vibration : 10 to 55Hz All Amplitude 1.52mmp-p (2 hours in each of 3 orthogonal axes) Sweeping time 15min. Shock : Acceleration 100G (3 times in each of 3 orthogonal axes, Total 18 times ) Duration 6ms 12. Cleaning Condition This product can not be washed whole. No clean solder paste is recommended for this product. If cleaning should be necessary only for DIP type, use IPA and hand-wash only soldered surface by brush cleaning. After cleaning be sure to dry up before using. 13 Bellnix DC-DC Converter BDD20070926The Fifth Generation, Ultra Small Size, Isolated DC-DC Converter Belinix 10Watt BTD Series 13. Environmental Compliance This product is ROHS compliance. Halogen free material is used for PCB. {Note} RoHS Compliance : Based on EU Directive 2002/95/EC. 14. Precautions -This product intends to be used for general electronic equipments (Clerical work machines, Telecommunications equipments, and Measurement equipments). Therefore, do not use for medical equipments, nuclear power equipments, and trains, etc. the malfunction and damage of which may influence directly to human life and property. Please confirm when using it in the case except general electronic equipment. -For this product, parallel operation is not possible. -For mounting this product, please do not use connector or socket. The performance may not be fulfilled by the effect of contacting resistor. Please mount to PCB by soldering. -This product has a built-in over-current, short protection, but long time short circuit will cause failure, so avoid it. -The product may be damaged if it is used under nonstandard electric and environmental conditions such as temperature. Please be sure to keep the standards. -Do not store in a place where corridible gas may be generated or at a dusty place. -The soldering may degrade, so be careful when safekeeping in a place with high-temperature, humidity and rapid temperature change for more than 1 year. -There is a possibility of damage by static. When the worker has electrified static, please earth discharge and working on an earthed worktable will be recommended. -This product does not have a built-in over voltage protection. -No test certificate is attached to this product. 15. Guarantee This product shall be guaranteed for 5 years. During this period, if there should be any failure definitely due to our designing or manufacturing workmanship, we will repair or replace it with new one at our own expense. But in case that it should be modified and/or made internal remodeling by buyer itself whatsoever, we can not guarantee it. This guarantee shall cover only this protudcts. 14 Bellnix DC-DC Converter BDD20070926