⎪



Efficiency up to 96%, non-isolated

Regulator requires

Pin-out compatible with LM78XX LinearHigh efficiency requiredVery lowest profile (L*W*H=11.5*8.5*17.5 )Wide input range (9V-72V)



Short circuit protection, Thermal shutdown-40°C to +85°C Operating TemperatureDesign meet EN60950 safety

Output voltage

Output current (1)@ full load

Efficiency (2)Min. Input

Efficiency (2)Max. Input

9-72 VDC

3.3 VDC

500mA

82%

76%

C78HB5.0-0.5J

9-72 VDC

5.0 VDC

500mA87%

81%

C78HB6.5-0.5J

9-72 VDC

6.5 VDC

500mA

91%

84%

C78HB9.0-0.5J

14-72 VDC

9.0 VDC

500mA

92%

86%

C78HB12-0.5J

17-72 VDC

12 VDC

500mA

94%

89%

C78HB15-0.5J

21-72 VDC

15 VDC

500mA

95%

91%

C78HB24-0.5J

36-72 VDC

24 VDC

300mA

96%

92%

Part number

Input voltage

C78HB3.3-0.5J

1.

(1)

To keep the output voltage on stable at least a 10mA (6mA for 24V output) of minimum loading is necessary.

2.

(2)

The efficiency is test by min./ max. input voltage and max. full load @25℃.

3.

Add suffixed “L” for output pins are 90° bent version.

4.

All specifications valid at nominal input voltage, full load and 25℃ after warm-up time unless otherwise stated.

C78HB3.3-0.5 J
Output voltage

Output current

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢T 07-7017088⎢

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∣∣Parameter
Input⎪

Conditions

Min.

Typ.

Input filter

±3%

100μF

1.0%

±2

Capacitive LoadLine voltage regulation

LL to HL at 100% Load

Load voltage regulation

10% to 100% of full load

0.3

0.6%

Dynamic load stability

100% to 50% Load±75±100mV

Ripple & Noise

10% to 100% of full load

2060

mVp-p

Operating frequency

100% Load

800

kHz

Quiescent current

Vin=48V , min. load

5mA

0.65

W-4085

˚C-55125

˚C

Operating case temperature

100˚C

Relative Humidity95%RH60

˚C //W

0.015%/ ˚C

0.4120
1

Internal power dissipation
Operating temperature

with de-rating

Storage temperature
Environment

UnitCapacitor

Voltage accuracy

OutputMax.

Case thermal impedance
Temperature coefficient-40℃ ~ +85℃ Ambient

MTBF+25˚C

7395

KHrs

Short-circuit protection
Function

Continuous, automatic recovery

Short circuit input current

Nominal Vin=48V

15Thermal shutdown

Internal IC junction

165

Vibration

17.5 x 11.5 x 8.5 mm

Weight1.
2.
3.

˚C
EN60950

Dimension

EMC4gCooling method

Free air convectionCase material

Non-Conductive Black Plastic (UL94V-0)

Potting material

siliconeEMI conduction

EN55032Class A/B (1)EMI radiation

EN55032Class A/B (1)With external components.
All specifications valid at nominal input voltage, full load and 25℃ after warm-up time unless otherwise stated.
The product information and specifications are subject to change without prior notice.
(1)

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢mA

MIL-STD-202

Safety Approvals

Physical25T 07-7017088⎢

F 07-7017063⎢

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sales@ctc-dc-dc.com

∣∣

⎪

Load
120%
100%
80%
60%
40%
20%0%-400

10 20 30

40 50 60

70 80 90 100 110
7185

Operating Temperature (℃)
The derating curve was measured in chamber with natural convection.

C78HB-xx0.5J

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢

T 07-7017088⎢

F 07-7017063⎢

www.powerctc.com⎢

sales@ctc-dc-dc.com

∣

∣

⎪

PinSingle

1+Vin

2

GND

3+Voutxx.x±0.5mm
xx.xx±0.25mm

Add suffixed “/L”

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢T 07-7017088⎢

F 07-7017063⎢

www.powerctc.com⎢

sales@ctc-dc-dc.com

⎪Add suffixed “L”

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢T 07-7017088⎢

F 07-7017063⎢

www.powerctc.com⎢

sales@ctc-dc-dc.com

∣

∣

⎪

C78HB-xx0.5J

Pin

Negative
outputPositive
output1+Vin+Vin

2-VoutGND

3

GND+Vout* C1, C2 is requested and lay closely at the pins of the converter.

External capacitors
C1C2Part numberInput voltage

Output voltageOutput current (1)@ full load

Efficiency (2)(Min.)

Efficiency (2)(Max.)C79HB3.3-0.5J

15-65 VDC

-3.3 VDC-400mA78%

75%

1μF/100V

22μF/6.3V

C79HB5.0-0.5J

15-65 VDC

-5.0 VDC-400mA82%

80%

1μF/100V

22μF/10V

C79HB6.5-0.5J

15-65 VDC

-6.5 VDC-350mA

84%

82%

1μF/100V

22μF/10V

C79HB9.0-0.5J

15-62 VDC

-9.0 VDC-300mA

87%

85%

1μF/100V

10μF/16V

C79HB12-0.5J

15-59 VDC

-12 VDC-250mA

88%

86%

1μF/100V

10μF/25V

C79HB15-0.5J

15-56 VDC

-15 VDC-200mA

89%

87%

1μF/100V

10μF/25V

C79HB24-0.5J

20-48 VDC

-24 VDC-200mA

89%

87%

1μF/100V

10μF/35V

Dual Outputs (two converters)

Dual outputs(single converter)

C79HB-xx0.5J

C79HB-xx0.5J

CTC is the professional and one among world’s leading manufacturers of DC-DC/ AC-DC converters.
The products were used in Computers, Industrial controls, Medical equipment, Transportation, EV, ECO-power, Aero-space application and communication.
⎢T 07-7017088⎢

F 07-7017063⎢

www.powerctc.com⎢

sales@ctc-dc-dc.com