MDD02L-09 Equivalent & Substitute Parts Reference

Part Overview

The MDD02L-09 from MEAN WELL USA Inc. is an isolated DC-DC converter module featuring dual ±9V outputs at up to 111mA per channel, 2W output power, 6kV isolation, and medical application suitability. This active device is through-hole mounted in a 7-SIP package. Engineers may require alternative models due to inventory availability, multi-sourcing requirements, or specific application constraints within the same parameter set.

Key Parameters

Parameter	Value
Manufacturer Part Number	MDD02L-09
Category	DC DC CONVERTER / Isolated Module
Number of Outputs	2
Voltage - Input (Min)	4.5V
Voltage - Input (Max)	5.5V
Voltage - Output 1	9V
Voltage - Output 2	-9V
Current - Output (Max)	111mA, 111mA
Power (Watts)	2W
Voltage - Isolation	6kV
Applications	Medical
Mounting Type	Through Hole
Package / Case	7-SIP Module, 5 Leads
Operating Temperature	-40°C ~ 85°C
Efficiency	81%
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts are included only if their functional, electrical, and mechanical parameters match those specified for the main part. The key parameters for evaluation are: input voltage range (4.5V to 5.5V), dual outputs (9V, -9V) at 111mA each, power rating (2W), isolation level, package type, mounting method, and operating temperature. Only parts listed with explicit compliance to these criteria are shown.

Parameter Comparison

Parameter	MDD02L-09 (MEAN WELL USA Inc.)	NMH0509SC (Murata Power Solutions Inc.)
Input Voltage Range	4.5V – 5.5V	4.5V – 5.5V
Number of Outputs	2	2
Output Voltage 1	9V	9V
Output Voltage 2	-9V	-9V
Max Output Current	111mA, 111mA	111mA, 111mA
Total Power	2W	2W
Voltage Isolation	6kV	1kV
Applications	Medical	ITE (Commercial)
Mounting Type	Through Hole	Through Hole
Package / Case	7-SIP Module, 5 Leads	7-SIP Module, 5 Leads
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Efficiency	81%	81%
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

MDD02L-09 and NMH0509SC are both active products and meet RoHS3 and REACH compliance. Both are classified as MSL 1 and are available in through-hole 7-SIP modules with comparable dimensions and output ratings. Selection should be based on required application sector since MDD02L-09 lists medical applications and 6kV isolation, while NMH0509SC is specified for ITE (Commercial) applications and 1kV isolation.

Frequently Asked Questions (FAQ)

Q: Which input and output parameters are matched for substitute selection?
A: Both the main part (MDD02L-09) and the substitute (NMH0509SC) match on input voltage range (4.5V to 5.5V), output voltages (9V, -9V), max output current (111mA per channel), and total power (2W).

Q: What package considerations apply to these DC DC converter isolated modules?
A: Both parts use 7-SIP Module, 5 Leads through-hole packages, supporting direct compatibility in most designed footprints.

Q: Are both parts RoHS and REACH compliant?
A: Yes, both the MDD02L-09 and the NMH0509SC are ROHS3 compliant and REACH unaffected.

Q: Is the isolation voltage the same for all substitutes?
A: No, the MDD02L-09 has 6kV isolation, while the NMH0509SC has 1kV isolation.

Q: Do these DC DC converters support use in the same temperature range?
A: Both devices are rated for operation from -40°C to 85°C.

Q: Are there differences in intended applications between the main and substitute parts?
A: MDD02L-09 specifies medical applications; NMH0509SC specifies ITE (Commercial) use.

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