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DC/DC Converter TRN 3SM Series, 3 Watt
Models
• Compact SMD package
11,9 11,3 8,0 mm
• Fully regulated outputs
• Input Voltage range
4.5-13.2, 9-18, 18-36, 36-75 VDC
• I/O-isolation 1‘600 VDC
• Operating temperature range
–40°C to +85°C
• Short circuit protection
• 3-year product warranty
• Designed to meet UL 62368-1
(UL 60950-1)
The TRN 3SM Series comprises 3 Watt fully regulated, high performance DC/
DC converters. They come in a compact cubical package of only 1.07 cm3. Full
load operation is reliable up tp 65°C environment temperature. With 1’600 VDC
I/O-isolation voltage, and short current protection they cover a wide range of
application when space is limited. The input of the converters is designed for a
wide voltage range (2:1) and minimum load is not required. The functional I/O-
isolation system is designed to meet IEC/EN 62368-1 with a test voltage (60 s)
of 1600 VDC.
Order code Input voltage Output voltage Output current max. Efficiency typ.
TRN 3-0510SM 3.3 VDC 700 mA 75 %
TRN 3-0511SM 5.0 VDC 600 mA 78 %
TRN 3-0512SM 12 VDC 250 mA 82 %
TRN 3-0513SM 4.5 – 13.2 VDC 15 VDC 200 mA 80 %
TRN 3-0515SM (9 VDC nominal) 24 VDC 125 mA 80 %
TRN 3-0521SM ± 5.0 VDC ±300 mA 77 %
TRN 3-0522SM ±12 VDC ±125 mA 80 %
TRN 3-0523SM ±15 VDC ±100 mA 80 %
TRN 3-1210SM 3.3 VDC 700 mA 76 %
TRN 3-1211SM 5.0 VDC 600 mA 79 %
TRN 3-1212SM 12 VDC 250 mA 84 %
TRN 3-1213SM 9 – 18 VDC 15 VDC 200 mA 83 %
TRN 3-1215SM (12 VDC nominal) 24 VDC 125 mA 82 %
TRN 3-1221SM ± 5.0 VDC ±300 mA 78 %
TRN 3-1222SM ±12 VDC ±125 mA 82 %
TRN 3-1223SM ±15 VDC ±100 mA 81 %
TRN 3-2410SM 3.3 VDC 700 mA 76 %
TRN 3-2411SM 5.0 VDC 600 mA 78 %
TRN 3-2412SM 12 VDC 250 mA 84 %
TRN 3-2413SM 18 – 36 VDC 15 VDC 200 mA 84 %
TRN 3-2415SM (24 VDC nominal) 24 VDC 125 mA 83 %
TRN 3-2421SM ± 5.0 VDC ±300 mA 79 %
TRN 3-2422SM ±12 VDC ±125 mA 83 %
TRN 3-2423SM ±15 VDC ±100 mA 82 %
TRN 3-4810SM 3.3 VDC 700 mA 75 %
TRN 3-4811SM 5.0 VDC 600 mA 79 %
TRN 3-4812SM 12 VDC 250 mA 83 %
TRN 3-4813SM 36 – 75 VDC 15 VDC 200 mA 83 %
TRN 3-4815SM (48 VDC nominal) 24 VDC 125 mA 82 %
TRN 3-4821SM ± 5.0 VDC ±300 mA 77 %
TRN 3-4822SM ±12 VDC ±125 mA 82 %
TRN 3-4823SM ±15 VDC ±100 mA 80 %
Models
TRN 3SM Series, 3 Watt
www.tracopower.com Page 2 of 4
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specifications
Input current no load 9 Vin models: 75 mA max.
12 Vin models: 40 mA max.
24 Vin models: 20 mA max.
48 Vin models: 12 mA max.
Surge voltage (1 s max.) 9 Vin models: 15 V max.
12 Vin models: 25 V max.
24 Vin models: 50 V max.
48 Vin models: 100 V max.
Reflected ripple current 9 Vin models: 100 mAp-p typ.
12 & 24 Vin models: 75 mAp-p typ.
48 Vin models: 50 mAp-p typ.
Conducted noise – Conducted input emission EN 55032 class A or B with external components
– Filter proposal for compling to EN 55032 class A/B www.tracopower.com/overview/trn3sm
EMC immunity – ESD (electrostatic discharge) EN 61000-4-2, air ±8 kV, contact ±6 kV,
perf. criteria A
– Radiated immunity EN 61000-4-3, 10 V/m, perf. criteria A
– Fast transient / surge EN 61000-4-4, ±2 kV, perf. criteria A
(with external input capacitor) EN 61000-4-5, ±1 kV perf. criteria A
Nippon chemi-con KY 220 µF/ 100 V
– Conducted immunity EN 61000-4-6, 10 Vrms, perf. criteria A
– Magnetic field immunity EN 61000-4-8
100 A/m, continuous, perf. criteria A
1000 A/m, 1 sec., perf. criteria A
Input filter capacitor type
Output Specifications
Voltage set accuracy ±1 % max.
Regulation – Input variation 0.2 % max.
– Load variation 0 – 100 % 1 % max.
– Cross regulation - dual output: 5 % max. (asymmetrical load 25 % / 100 %)
Temperature coefficient ±0.02 %/K typ.
Ripple and noise (20 MHz Bandwidth) 50 mVp-p typ.
Start-up time 15 ms max. (5 ms typ.)
Transient response (25% load step change) 500 μs typ.
Short circuit protection continuous, automatic recovery
Capacitive load – Single output 3.3 VDC models: 4400 µF max.
5.0 VDC models: 2200 µF max.
12 VDC models: 1000 µF max.
15 VDC models: 820 µF max.
24 VDC models: 330 µF max.
– Dual output ±5.0 VDC models: 1200 µF max. (each output)
±12 VDC models: 520 µF max. (each output)
+15 VDC models: 440 µF max. (each output)
General Specifications
Temperature ranges – Operating (convection cooling 20 LFM, 0.1 m/s) –40°C to +85°C
– Case temperature +95°C max.
– Storage temperature –55°C to +125°C
Derating 2.5%/K above 65°C
Humidity (non condensing) 5 – 95 % rel H max.
Isolation voltage – I/O isolation voltage (60 s) 1’600 VDC
Isolation capacitance 75 pF max.
Isolation resistance (@ 500 VDC) >1 GOhm
TRN 3SM Series, 3 Watt
www.tracopower.com Page 3 of 4
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
General Specifications (continued)
Moisture sensitivity level (MSL) IPC J-STD-033C Level 2
Reliability, calculated MTBF (MIL-HDBK-217F at +25°C, ground benign) 4‘400‘000 h
Switching frequency 100 kHz min. Pulse frequency modulation.
Thermal shock & vibration MIL-STD-810F
Safety standards – Designed to meet (no certification) IEC/EN/UL 62368-1, UL 60950-1
– Certification documents www.tracopower.com/overview/trn3sm
Environmental compliance – Reach www.tracopower.com/products/reach-declaration.pdf
– RoHS RoHS directive 2011/65/EU
Physical Specifications
Casing material non-conductive black plastic
Potting material Epoxy (UL 94V-0 rated)
Package weight 2.0 g (0.07 oz)
Lead-free reflow solder process IPC J-STD-020E
Outline Dimensions
Pin Single Dual
1–Vin (GND) –Vin (GND)
2+Vin (Vcc) +Vin (Vcc)
3+Vout +Vout
4no pin common
5–Vout –Vout
6NC NC
7NC NC
Pin-Out
Dimensions in [mm], () = Inch
Tolerances: x.x ±0.5 (±0.02)
x.xx ±0.25 (±0.01)
Pin pitch tolerances ±0.25 (±0.01)
Pin dimension tolerance ±0.1 (±0.004)
Supporting Documents: www.tracopower.com/overview/trn3sm
1 2 345
6 7
bottom view
11.3 (0.44)
12.1 (0.476)
11.9 (0.47)
7.6 (0.30)
8.0 (0.31)
2 x 2.0
(2 x 0.08)
2.8
(0.11)
2.0
(0.08)
9.21 (0.362)
6.80 (0.268)
0.5 (0.02)
0-10°
0.20 (0.008) S
TRN 3SM Series, 3 Watt
www.tracopower.com
© Copyright 2020 Traco Electronic AG Specifications can be changed without notice!
Page 4 of 4
Rev. September 30, 2020
14.1 (0.56) min.
8.2 (0.32)
2.0
(0.08)
2.0
(0.079)
4.8 (0.189)
8.8 (0.346)
1.2
(0.047)
3.0
(0.12)
6.8
(0.268)
12.9
(0.51)
min.
2.44
(0.096)
6
7
1
3
2
4
5
Dimensions in mm (inch)
Recommended Solder Pad Layout
