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Mean Well

Mean Well NSD05-12S3 DC-DC Converter - 3.96W - 9.2~36V in 3.3V out 1.2A

SKU NSD05-12S3
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Overview

NSD05-12S3 is the 3.3V output model of this series: rated current 1.2A, rated power 3.96W, typical efficiency 72%.

Features

  • Wide 4:1 DC input range
  • Protections: Short circuit / Overload / Over voltage
  • 1000VDC I/O isolation
  • Cooling by free air convection
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty

Specifications

NSD05-12S3Specifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
1.2A
CURRENT RANGE
0 ~ 1.2A
RATED POWER
3.96W
CAPACITIVE LOAD (max.)
1000uF
RIPPLE & NOISE (max.)Note.2
75mVp-p
VOLTAGE TOLERANCENote.3
±2.0% max.
LINE REGULATION
±1.0%
LOAD REGULATION
±2.0%
SETUP TIME
80ms/RATED DC INPUT at full Load

INPUT

RATED DC INPUT
12VDC
VOLTAGE RANGE
9.2 ~ 36VDC
EFFICIENCY (Typ.)
72%
DC CURRENT
0.7A/12VDC
SHUTDOWN IDLE CURRENT
5mA/12VDC

PROTECTION

OVERLOAD
Above 105% rated output power Protection type : Over power limiting, recovers automatically after fault condition is removed
OVER VOLTAGE(CLAMP)
3.8 ~ 4.6V
SHORT CIRCUIT
Recovers automatically after fault condition is removed

FUNCTION

ON/OFF CONTROL
Logic "1" or open circuit : ON Logic "0" or short to PIN2 : OFF

ENVIRONMENT

WORKING TEMP.
-25 ~ +70℃
WORKING HUMIDITY
0% ~ 95% RH max.
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 0 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0~60℃)

SAFETY & EMC (Note 4)

SAFETY STANDARDS
TUV BS EN/EN62368-1,IEC62368-1 CB approved by TUV, EAC TP TC 004 approved
ISOLATION VOLTAGE
I/P-O/P:1KVDC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8; BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
11455.9K hrs min. Telcordia SR-332 (Bellcore) ; 1734.0K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
40.6*25.4*8.3mm (1.6"*1"*0.327") (L*W*H)
PACKING
0.007Kg; 700pcs/5.9Kg/1.23CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 12, 48VDC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 230mm*230mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets 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 )
  5. 5. To insure proper operation, a 47uF/100V electrolytic capacitor with Esr <1Ω must be added to the input line.
  6. 6.EMC filter suggestion(TBD):
  7. 7. 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

NSD05-12S3 Mechanical Specification
Mechanical Specification
NSD05-12S3 Block Diagram
Block Diagram
NSD05-12S3 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the NSD05-12S3 to power 3.3V embedded logic in an industrial controller?

Yes, this model is aligned with low-power 3.3V embedded electronics because it provides a constant 3.3V output at 3.96W. The 9.2~36V input range makes it useful where the source supply varies across common industrial DC ranges.

Is the NSD05-12S3 suitable for 3.3V IoT or communications boards inside automation equipment?

It can fit low-power 3.3V IoT, communications, or interface boards that need a regulated 3.3V rail. Its compact 40.6 × 25.4 × 8.3 mm body and 0.007 kg weight also make it practical for small embedded assemblies.

Can this converter be used for low-power 3.3V sensors or microcontroller subsystems?

This model is intended for constant-voltage 3.3V applications and offers 3.96W output capacity, which suits low-power digital and sensor-related subsystems. It is a better match for electronics-level loads than for higher-power 3.3V devices.

How does the NSD05-12S3 differ from the other output versions in the NSD05 family?

The listed 12-series siblings are NSD05-12S5 at 5W and 5V/1A, NSD05-12S12 at 5.04W and 12V/0.42A, and NSD05-12S15 at 4.95W and 15V/0.33A. The related 48-series siblings are NSD05-48S3 at 3.96W and 3.3V/1.2A, NSD05-48S5 at 5W and 5V/1A, NSD05-48S12 at 5.04W and 12V/0.42A, and NSD05-48S15 at 4.95W and 15V/0.33A.

Is the NSD05-12S3 appropriate for outdoor cabinets or exposed environments?

The temperature specification is -25°C to +70°C, so the operating range supports many indoor control and embedded equipment environments. No IP rating is included in the provided specs, so exposed outdoor use is not confirmed by this product data.

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Mean Well NSD05-12S3 DC-DC Converter - 3.96W - 9.2~36V in 3.3V out 1.2A
Mean Well

Mean Well NSD05-12S3 DC-DC Converter - 3.96W - 9.2~36V in 3.3V out 1.2A

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NSD05-12S3 is the 3.3V output model of this series: rated current 1.2A, rated power 3.96W, typical efficiency 72%.

Features

  • Wide 4:1 DC input range
  • Protections: Short circuit / Overload / Over voltage
  • 1000VDC I/O isolation
  • Cooling by free air convection
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Low cost
  • High reliability
  • 2 years warranty
View product

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