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Mean Well MDD01L-12 DC-DC Converter - 1W - 4.5~5.5V in ±12V out 42mA

SKU MDD01L-12

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End of Life, Succeeded by MDD01L-12N

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Overview

MDD01L-12 is the ±12V output model of this series: rated power 1W, typical efficiency 77%.

MDS01 and MDD01 series are 1W isolated and unregulated module type medical grade DC-DC converter with SIP7 package. It features international standard pins, a high efficiency up to 83%, wide working temperature range -40~+85℃, 6KVDC or 4.2KVAC I/P-O/P high isolation voltage, short circuit protection, etc. The models account for different input voltage 5V/12V/24V±10%, and various output voltage, 3.3V/ 5V/ 12 V/15V for single output and ±5V /±9 V/±12V/±15V for dual outputs, which are suitable for medical systems , ultra low leakage current.

Features

SIP7 package with international standard pinout
Operating temperature range -40 ~ +85℃
Medical safety approved (1xMOPP/2xMOOP) according to ANSI/AAMI ES60601-1
Low patient leakage current <2μA
Protection: Short circuit(3 second max.)
6KVDC or 4.2KVAC hight I/O isolation (Reinforced isolation)
Low cost
3 years warranty

Specifications

MDD01L-12Specifications from the official datasheet (2022-05-24 edition)

INPUT

INPUT VOLTAGE (RANGE): Normal 5V (4.5 ~ 5.5V)
VOLTAGE RANGE: 4.5 ~ 5.5Vdc
INPUT CURRENT (NO LOAD): 40mA
INPUT CURRENT (FULL LOAD): 265mA
SURGE VOLTAGE (100ms max.): 5Vin models : 9Vdc 12Vin models : 18Vdc 24Vin models : 30Vdc
FILTER: Internal capacitor
PROTECTION: Fuse recommended. 500mA Slow-Blow Type for all models

OUTPUT

OUTPUT VOLTAGE: ±12V
OUTPUT CURRENT: ±5 ~ 42mA
EFFICIENCY (TYP.): 77%
CAPACITOR LOAD (MAX.)^{* For each output}: *220μF
VOLTAGE ACCURACY: ±5.0%
RATED POWER: 1W
RIPPLE & NOISE^Note.2: 75mVp-p
LINE REGULATION^Note.3: 1.2% for 1% input variation
LOAD REGULATION^Note.4: ±10%
SWITCHING FREQUENCY (Typ.): 100KHz

PROTECTION

SHORT CIRCUIT: 3 second max.

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.02% / ℃ (0 ~ 85℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 3sec./260℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: UL60601-1, EAC TP TC 020/2011 approved
WITHSTAND VOLTAGE: I/P-O/P:6KVDC or 4.2KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION LEVEL: Primary-secondary: 1xMOPP / 2xMOOP when system input voltage is with 250VAC, 50/60Hz
ISOLATION CAPACITANCE (Typ.): 5pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55011(CISPR11) Class B
Radiated BS EN/EN55011(CISPR11) Class B
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 2, ±8KV contact

Parameter	Standard	Test Level
Conducted	BS EN/EN55011(CISPR11)	Class B
Radiated	BS EN/EN55011(CISPR11)	Class B

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 2, ±8KV contact

OTHERS

MTBF: 3500Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 19.5*9.8*12.5mm (0.77*0.386*0.492 inch)
CASE MATERIAL: Non-Conductive black plastic (UL 94V-0 rated)
PACKING: 4.2g ; 25pcs/per tube, 3000pcs/120 tube/per carton

Test conditions and notes6

1.All parameters are specified at normal input(L:5Vdc, M:12Vdc, N:24Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 10% to 100% rated load.
5.Patient leakage current(2μA max.) and reinforced isolation is based on a 250VAC, 50/60Hz system input voltage.
6.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)

Technical drawings

MDD01L-12 Mechanical Specification — Mechanical Specification

MDD01L-12 EMC Suggestion — EMC Suggestion

Typical applications

Medical devices
Medical oxygen monitor
CT scanning
Medical carts
Oral care equipment

Downloads

Certificates4

Mean Well MDD01-02-EMC Certificate PDF Download

Mean Well MDD01-02-CE-dec Certificate PDF Download

Mean Well E227340 UL Certificate PDF Download

Mean Well EAC Certificate PDF Download

Test reports1

Mean Well MDD01L-12 Test Report PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MDD01L-12 in a compact industrial control board that needs ±12V rails from a 5V DC source?

This converter is built for a 4.5~5.5VDC input and provides a fixed ±12V output. Its 1W rating, up to 42mA per output, and 19.5 × 9.8 × 12.5 mm package fit low-power industrial control and signal-conditioning circuits where ±12V is required.

Is the MDD01L-12 suitable for embedded analog interface circuits that require isolated ±12V power?

It can fit embedded analog sections that need a ±12V output in a low-power design. The unit is rated for 1W with up to 42mA per output, so it is best matched to light-load analog or interface stages rather than higher-current subsystems.

Can this converter be used in automation monitoring equipment with limited board space?

Yes, the small 19.5 × 9.8 × 12.5 mm body and 0.0042 kg weight make it practical for dense automation electronics. The 1W design and fixed ±12V output suit low-power monitoring, sensing, or interface sections that operate from a 4.5~5.5VDC input.

Is the MDD01L-12 meant for outdoor or harsh-environment use?

The listed operating temperature is -40°C to +85°C (with load derating at higher temperatures, see the derating curve), which supports use across a wide temperature range. No IP rating is provided in the specs, so it is better treated as a board-level part for protected indoor or enclosed equipment rather than exposed outdoor use.

How does the MDD01L-12 compare with other MDD01L series options?

Within the same 1W MDD01L family (5V nominal input), the sibling outputs are ±5V at up to 100mA for MDD01L-05, ±9V at up to 56mA for MDD01L-09, and ±15V at up to 34mA for MDD01L-15. The MDD01L-12 itself is the ±12V version rated at up to 42mA per output.

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Model	Power	Voltage	Current	IP Rating
Mean Well MDD01N-15N SIP Package DC-DC Converter- 1W - ±15V Out 33mA	1W	15V	0.0333A	IP20	View
Mean Well MDD01N-12N SIP Package DC-DC Converter- 1W - ±12V Out 42mA	1W	12V	0.0417A	IP20	View
Mean Well MDD01N-05N SIP Package DC-DC Converter- 1W - ±5V out 100mA	1W	5V	0 Milliampere	IP20	View
Mean Well MDD01M-15N SIP Package DC-DC Converter- 1W - ±15V Out 33mA	1W	15V	0.0333A	IP20	View
Mean Well MDD01M-12N SIP Package DC-DC Converter- 1W - ±12V Out 42mA	1W	12V	0.0417A	IP20	View
Mean Well MDD01M-05N SIP Package DC-DC Converter- 1W - ±5V out 100mA	1W	5V	0 Milliampere	IP20	View
Mean Well MDD01L-15N SIP Package DC-DC Converter- 1W - ±15V Out 33mA	1W	15V	0.0333A	IP20	View
Mean Well MDD01L-12N SIP Package DC-DC Converter- 1W - ±12V Out 42mA	1W	12V	0.0417A	IP20	View
Mean Well MDD01L-05N SIP Package DC-DC Converter- 1W - ±5V out 100mA	1W	5V	0.1A	IP20	View
Mean Well MDD01M-09 DC-DC Converter - 1W - 10.8~13.2V in ±9V out 56mA	1W	9V	0.056A	IP20	View
Mean Well MDD01N-15 DC-DC Converter - 1W - 21.6~26.4V in ±15V out 34mA	1W	15V	0.034A	IP20	View
Mean Well MDD01N-12 DC-DC Converter - 1W - 21.6~26.4V in ±12V out 42mA	1W	12V	0.042A	IP20	View
Mean Well MDD01N-09 DC-DC Converter - 1W - 21.6~26.4V in ±9V out 56mA	1W	9V	0.056A	IP20	View
Mean Well MDD01N-05 DC-DC Converter - 1W - 21.6~26.4V in ±5V out 100mA	1W	5V	100 Milliampere	IP20	View
Mean Well MDD01M-15 DC-DC Converter - 1W - 10.8~13.2V in ±15V out 34mA	1W	15V	0.034A	IP20	View
Mean Well MDD01M-12 DC-DC Converter - 1W - 10.8~13.2V in ±12V out 42mA	1W	12V	0.042A	IP20	View
Mean Well MDD01M-05 DC-DC Converter - 1W - 10.8~13.2V in ±5V out 100mA	1W	5V	100 Milliampere	IP20	View

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