Mean Well DDR-15G-3.3 DC-DC Converter

Name: Mean Well DDR-15G-3.3 DC-DC Converter - 11.6W - 9~36V in 3.3V out 3.5A
Brand: Mean Well
SKU: DDR-15G-3.3
Price: 19.67 USD
Availability: InStock

Overview

DDR-15G-3.3 is the 3.3V output model of this series: rated current 3.5A, rated power 11.6W, typical efficiency 84%.

DDR-15 series is a 15W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (17.5mm), 4: 1 ultra wide input voltage, -40~+85℃ wide operating temperature, 4KVdc I/O isolation, adjustable output voltage ( 10%) and full protective functions...etc. This series has two input options: 9~36V /18~75V and various output options: 3.3V / 5V / 12V / 15V / 24V and can be used for industrial control, security control, communication system and other fields. Suitable applications are DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

Width only 17.5mm (1SU)
4:1 ultra wide input range
-40~+85℃ wide working temperature
No minimum load required
DC output adjustable (±10%)
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Input under voltage protection
4KVdc I/O isolation(Reinforced isolation)
3 years warranty

Specifications

DDR-15G-3.3Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 3.5A
CURRENT RANGE: 0 ~ 3.5A
RATED POWER: 11.6W
RIPPLE & NOISE (max.)^Note.2: 50mVp-p
VOLTAGE ADJ. RANGE: 3.0 ~ 3.6V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.5%
SETUP, RISE TIME: 120ms, 85ms at full load
HOLD UP TIME (Typ.): G-type: 8ms@24Vdc input
EXTERNAL CAPACITANCE LOAD (Max.): 3300μF

INPUT

VOLTAGE RANGE^Note.4: 9 ~ 36Vdc
EFFICIENCY (Typ.): 84%
DC CURRENT (Typ.): 0.8A /24Vdc
INRUSH CURRENT (Typ.): 15A /24Vdc

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 3.8 ~ 4.7V Protection type : Shut down o/p voltage, re-power on to recover
REVERSE POLARITY: By internal MOSFET, no damage, recovers automatically after fault condition removed
UNDER VOLTAGE LOCKOUT: Power ON≥9V , OFF≤8.5V

ENVIRONMENT

WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 5 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃)
VIBRATION: Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6
OPERATING ALTITUDE: 5000 meters

SAFETY & EMC (Note 5)

SAFETY STANDARDS: UL 62368-1, IEC 62368-1, AS/NZS 62368.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVdc
ISOLATION RESISTANCE: I/P-O/P>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class B
Radiated BS EN/EN55032 Class B
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line; criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class B
Radiated	BS EN/EN55032	Class B
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line; criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 3446.2K hrs min. Telcordia SR-332 (Bellcore) ; 907.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 17.5*90*54.5mm (W*H*D)
PACKING: 68g; 160pcs/12Kg/1.14CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 24VDC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the derating curve for more details.
5. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

DDR-15G-3.3 Block Diagram — Block Diagram

DDR-15G-3.3 Derating Curve — Derating Curve

DDR-15G-3.3 Mechanical Specification — Mechanical Specification

Typical applications

Downloads

Certificates3

UL Certificate(DDR-15)(EN) PDF Download

CE Certificate(DDR-15)(EN) PDF Download

EMC Certificate(DDR-15)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DDR-15G-3.3 to power a 3.3V microcontroller or FPGA board from a 24V DIN rail bus?

Yes. The DDR-15G-3.3 accepts 9-36V DC input and outputs 3.3V at 3.5A (11.6W). This is enough to power most microcontroller development boards, small FPGAs, or logic-level interface circuits from a 24V bus. The 4KVdc input-to-output isolation separates the logic circuits from the 24V bus.

Is the DDR-15G-3.3 suitable for providing an isolated 3.3V logic supply in an industrial data acquisition system?

Yes. The 4KVdc input-to-output isolation makes it well suited for creating a galvanically isolated 3.3V rail for ADC boards, serial interface converters, or communication modules in data acquisition racks. At 3.5A it has headroom for multiple low-power digital boards sharing the same 3.3V bus.

Can I run the DDR-15G-3.3 from a 12V vehicle power system to supply 3.3V embedded electronics?

Yes. A 12V vehicle bus (typically 10-14.4V) is within the 9-36V input range, though derating may be needed at low input voltage (see the derating curve). The 11.6W at 3.3V/3.5A capacity is sufficient for embedded processors, GPS modules, or communication interfaces in vehicle-mounted or mobile equipment applications.

Does the DDR-15G-3.3 perform reliably in wide-temperature industrial environments?

Yes. It is rated for a working temperature of -40°C to +85°C (with derating per the derating curve), covering cold-storage warehouses, outdoor enclosures, and hot factory environments. Humidity is rated 5-95% RH non-condensing, so install it inside a protective enclosure to shield it from moisture and contaminants.

How does the DDR-15G-3.3 compare to the DDR-15L-3.3?

Both output 3.3V in the same 17.5 x 90 x 54.5 mm housing with 4KVdc I/O isolation. The DDR-15G-3.3 accepts 9-36V input and delivers 11.6W at 3.5A, while the DDR-15L-3.3 accepts 18-75V input and delivers 15W at 4.5A. Choose the variant whose input range matches your DC bus voltage.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well DDR-15G-24 DC-DC Converter - 15W - 9~36V in 24V out 630mA	15W	24V	0.63A	IP20	$22.36	View
Mean Well DDR-15G-15 DC-DC Converter - 15W - 9~36V in 15V out 1A	15W	15V	1A	IP20	$19.67	View
Mean Well DDR-15G-5 DC-DC Converter - 15W - 9~36V in 5V out 3A	15W	5V	3A	IP20	$22.36	View
Mean Well DDR-15G-12 DC-DC Converter - 15W - 9~36V in 12V out 1.25A	15W	12V	1.25A	IP20	$22.36	View

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Mean Well DDR-15G-3.3 DC-DC Converter - 11.6W - 9~36V in 3.3V out 3.5A

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