Murata Power Solutions MEJ1 DC-DC Converter, 12V dc/ 83mA Output, 4.5 → 5.5 V dc Input, 1W, Through Hole, +85°C
- RS Stock No.:
 - 167-5981
 - Mfr. Part No.:
 - MEJ1S0512SC
 - Brand:
 - Murata Power Solutions
 
Bulk discount available
Subtotal (1 tube of 25 units)*
£171.85
(exc. VAT)
£206.22
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 1 unit(s) ready to ship
 - Plus 999,999,998 unit(s) shipping from 03 February 2026
 
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Tube(s)  | Per Tube  | Per unit*  | 
|---|---|---|
| 1 - 4 | £171.85 | £6.874 | 
| 5 - 9 | £166.68 | £6.667 | 
| 10 - 24 | £161.53 | £6.461 | 
| 25 - 49 | £156.37 | £6.255 | 
| 50 + | £151.22 | £6.049 | 
*price indicative
- RS Stock No.:
 - 167-5981
 - Mfr. Part No.:
 - MEJ1S0512SC
 - Brand:
 - Murata Power Solutions
 
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all  | Attribute | Value | 
|---|---|---|
| Brand | Murata Power Solutions | |
| Output Voltage | 12V dc | |
| Input Voltage Range | 4.5 → 5.5 V dc | |
| Power Rating | 1W | |
| Input Voltage Nominal | 5 V dc | |
| Output Current | 83mA | |
| Mounting Type | Through Hole | |
| Isolated | Yes | |
| Number of Outputs | 1 | |
| Package | SIP | |
| Isolation Voltage | 5.2kV dc | |
| Depth | 12.65mm | |
| Length | 19.65mm | |
| Series | MEJ1 | |
| Load Regulation | 0.07 | |
| Maximum Temperature | +85°C | |
| Efficiency | 74% | |
| Minimum Temperature | -40°C | |
| Select all | ||
|---|---|---|
Brand Murata Power Solutions  | ||
Output Voltage 12V dc  | ||
Input Voltage Range 4.5 → 5.5 V dc  | ||
Power Rating 1W  | ||
Input Voltage Nominal 5 V dc  | ||
Output Current 83mA  | ||
Mounting Type Through Hole  | ||
Isolated Yes  | ||
Number of Outputs 1  | ||
Package SIP  | ||
Isolation Voltage 5.2kV dc  | ||
Depth 12.65mm  | ||
Length 19.65mm  | ||
Series MEJ1  | ||
Load Regulation 0.07  | ||
Maximum Temperature +85°C  | ||
Efficiency 74%  | ||
Minimum Temperature -40°C  | ||
- COO (Country of Origin):
 - CN
 
Murata 1W SIP Single and Dual Output Isolated DC-DC Converter - MEJ1 Series
The Murata Power MEJ1 is a series of isolated 1 Watt DC-DC converters, encapsulated in a 7 pin SIP package. The DC-DC converter complies with the 3rd edition of medical safety standard and provides the following MOOP (means of operator protection): 2 MOOP based upon a working voltage of 200Vrms max - 280Vpkmax, between primary and secondary and 1 MOOP based upon a working voltage of 200Vrms max, between primary and its enclosure. 
Typical energy efficiencies of these DC-DC converters are in the range of 70 to 78%.
The MEJ1 series is designed for low power applications that require a high degree of isolation such as an agency-approved safety barrier for medical equipment, IGBT drivers, and control systems.
Typical energy efficiencies of these DC-DC converters are in the range of 70 to 78%.
The MEJ1 series is designed for low power applications that require a high degree of isolation such as an agency-approved safety barrier for medical equipment, IGBT drivers, and control systems.
Single and dual outputs
UL 94V-0 package material
SIP package style
5.2kVDC isolation
3.3V, 5V, 12V, 15V & 24V inputs
3.3V, 5V, 9V, 12V & 15V output
Internal SMD construction
Fully encapsulated with toroidal magnetics
Pin compatible with the MEV, NMV, NMK, MEJ2, & NMJ series
UL 94V-0 package material
SIP package style
5.2kVDC isolation
3.3V, 5V, 12V, 15V & 24V inputs
3.3V, 5V, 9V, 12V & 15V output
Internal SMD construction
Fully encapsulated with toroidal magnetics
Pin compatible with the MEV, NMV, NMK, MEJ2, & NMJ series
Approvals
UL 609502, UL60601 (3rd Edition)
Murata Power Solutions - SIP
Related links
- Murata Power Solutions MEJ1 DC-DC Converter 4.5 → 5.5 V dc Input Through Hole, +85°C
 - Murata Power Solutions MEJ1 DC-DC Converter 4.5 → 5.5 V dc Input Through Hole, +85°C
 - Murata Power Solutions MEJ1 DC-DC Converter 4.5 → 5.5 V dc Input Through Hole, +85°C
 - Murata Power Solutions MEJ1 DC-DC Converter 4.5 → 5.5 V dc Input Through Hole, +85°C
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