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70IMX4-12-8 Datasheet(PDF) 11 Page - Bel Fuse Inc. |
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70IMX4-12-8 Datasheet(HTML) 11 Page - Bel Fuse Inc. |
11 / 12 page IMX4 Series Data Sheet 4 Watt DC-DC Converters BCD20006-G Rev AE, 16-Sep-2015 Page 11 of 12 MELCHER The Power Partners. Safety and Installation Instructions Installation Instruction Installation of the dc-dc converters must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application. Connection to the system shall be made via a printed circuit board; see Mechanical Data. The converters should be connected to a secondary circuit. Do not open the converter. Ensure that a converter failure does not result in a hazardous condition. To prevent excessive current flowing through the input lines in case of a short-circuit, an external fuse specified in table 6 should be installed in the non-earthed input supply line. Pin Allocation Fig. 18 Foot print Table 12: Pin allocation for standard and option Z Pin Single-output models Dual-output models 2Vi– Vi– 3Vi– Vi– 10 n.c. -- 11 -- Vo– 14 Vo+ Vo+ 16 Vo– Go 22 Vi+ Vi+ 23 Vi+ Vi+ Table 13: Pin allocation for option K Pin Single-output models Dual-output models 1Vi+ Vi+ 2 n.c. -- 10 -- Go 11 -- Go 12 Vo– -- 13 Vo+ Vo– 15 -- Vo+ 24 Vi– Vi– Table 14: Electric strength test voltages Characteristic Input to output Unit 5IMX4 20/40IMX4 70IMX4 Factory test >1 s 0.77 1.5 1 1.5 kVAC Equivalent DC test voltage 1.0 2.0 1 2.0 kVDC Coupling capacitance 2.2 typ. 1.1 typ. 1.1 nF Insulation resist. (500 VDC) -- >100 >100 M Ω 1 Converters produced 2013 or later; older units were tested with 1.2 kVAC. 1 12 13 24 10013b Bottom view Standards and Approvals The converters are approved according to UL/CSA 60950-1 and IEC/EN 60950 -1 2nd Edition. The converters have been evaluated for: • Building-in • Basic insulation input to output, based on their maximum input voltage • Pollution degree 2 environment • Connecting the input to a secondary circuit, which is subject to a maximum transient rating of 1500 V for 20IMX4 and 40IMX4, and 2000 V for 70IMX4 models. The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO 9001:2008. Railway Applications To comply with railway standards, all components are coated with a protective lacquer (except option Z). Protection Degree and Cleaning Liquids The protection degree of the converters (except opt. Z) is IP 40 for models with Revision BA (or later). Older models have IP 30. In order to avoid possible damage, any penetration of cleaning fluids should be prevented, since the power supplies are not hermetically sealed. However, open-frame models (option Z) leave the factory unlacquered; they may be lacquered by the customer, for instance together with the mother board. Cleaning agents are not permitted – except washing at room temperature with isopropyl alcohol. If necessary, the mother board must be cleaned, before fitting the open-frame converter. Note: Cleaning liquids may damage the adhesive joints of the ferrite cores. Isolation The electric strength test is performed in the factory as a routine test in accordance with EN 50514 and IEC/EN 60950. The Company will not honor any warranty claims resulting from incorrectly executed electric strength field tests. |
Similar Part No. - 70IMX4-12-8 |
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Similar Description - 70IMX4-12-8 |
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