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Mean Well

Mean Well NSD05-48S3 DC-DC Converter - 3.96W - 18~72V in 3.3V out 1.2A

SKU NSD05-48S3
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Overview

NSD05-48S3 is the 3.3V output model of this series: rated current 1.2A, rated power 3.96W, typical efficiency 75%.

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

NSD05-48S3Specifications 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
48VDC
VOLTAGE RANGE
18 ~ 72VDC
EFFICIENCY (Typ.)
75%
DC CURRENT
0.2A/48VDC
SHUTDOWN IDLE CURRENT
5mA/48VDC

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

NSD05-48S3 Mechanical Specification
Mechanical Specification
NSD05-48S3 Block Diagram
Block Diagram
NSD05-48S3 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the NSD05-48S3 for a 3.3V microcontroller or logic board in industrial electronics?

Yes, this converter is suited to 3.3V constant-voltage loads up to 1.2A, with 3.96W total output power. It is appropriate for low-power logic and control boards when the available source is within the 18~72VDC input range.

Is the NSD05-48S3 suitable for powering 3.3V sensors or interface electronics in automation equipment?

It can be used for 3.3V sensors and interface electronics that stay within the 1.2A and 3.96W output limits. The constant-voltage output is intended for electronics that require a regulated 3.3V supply.

Can this model support embedded communication or control circuits that run on 3.3V?

Yes, if the circuit is a low-power 3.3V load and the source available to the converter is 18~72VDC. The 40.6 x 25.4 x 8.3 mm size is also useful where embedded assemblies have limited mounting space.

Can the NSD05-48S3 be used in harsh temperature conditions?

This model is specified for operation from -25C to +70C. No IP rating is listed, so temperature capability is defined, but dust or water exposure protection is not.

What are the output options across the NSD05 family compared with the NSD05-48S3?

In the 18~72VDC input family, outputs are 3.3V at 1.2A with 3.96W for NSD05-48S3, 5V at 1A with 5W for NSD05-48S5, 12V with 5.04W and 0.42A for NSD05-48S12, and 15V with 4.95W and 0.33A for NSD05-48S15. In the 9.2~36VDC input family, the matching versions are NSD05-12S3, NSD05-12S5, NSD05-12S12, and NSD05-12S15 with the same output ratings.

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Mean Well NSD05-48S3 DC-DC Converter - 3.96W - 18~72V in 3.3V out 1.2A
Mean Well

Mean Well NSD05-48S3 DC-DC Converter - 3.96W - 18~72V in 3.3V out 1.2A

Log in to see price

NSD05-48S3 is the 3.3V output model of this series: rated current 1.2A, rated power 3.96W, typical efficiency 75%.

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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