Rev. A

DH40 Series

Single & Dual Outputs

2:1 Wide Input Ranges

40 Watt DC/DC Power Converters

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

10/31/2012

603-778-2300 www.wallindustries.com Fax 603-778-9797

Page 3 of 13

SPECIFICATIONS: DH40 SERIES

All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.

We reserve the right to change specifications based on technological advances.

SPECIFICATION

TEST CONDITIONS

Min

Typ

Max

Unit

GENERAL

Efficiency

(see efficiency curves on pages 6~8)

See Table

Switching Frequency

320

KHz

Isolation Voltage (Input to Output)

60 seconds

1500

VDC

Isolation Resistance

500VDC

1000

MΩ

Isolation Capacitance

100kHz, 1V

1500

pF

Maximum Capacitive Load

See Table

ENVIRONMENTAL SPECIFICATIONS

3.3VDC Output Models

-40

+66

5, 12, & 15VDC Output Models

-40

+46

Operating Temperature (W/O Heatsink)

(see derating curves on page 5)

Natural air convection (20LFM)

Nominal Vin and full load

Dual Output Models

-40

+40

°C

3.3VDC Output Models

-40

+73

5, 12, & 15VDC Output Models

-40

+57

Operating Temperature (W/ Heatsink)

(see derating curves on page 5)

Natural air convection (20LFM)

Nominal Vin and full load

Dual Output Models

-40

+52

°C

Natural convection (20LFM)

12.0

100LFM convection

9.0

200LFM convection

8.0

Thermal Impedance (W/O Heatsink)

400LFM convection

6.0

°C/W

Natural convection (20LFM)

10.0

100LFM convection

5.4

200LFM convection

4.5

Thermal Impedance (W/ Heatsink)

400LFM convection

3.0

°C/W

Case Temperature

+105

°C

Storage Temperature

-50

+125

°C

Humidity (non-condensing)

95

% RH

RFI

Six-sided shielded metal case

Cooling

Natural convection is about 20LFM and is not still air (0LFM)

natural convection

Lead Temperature

1.5mm from case for 10 seconds

260

°C

MTBF (calculated)

MIL-HDBK-217F at 25°C, Ground Benign

328,000

hours

PHYSICAL SPECIFICATIONS

Weight

1.06oz (30g)

Dimensions (L x W x H)

2.0 x 1.0 x 0.43 inches (50.8 x 25.4 x 11 mm)

Case Material

Aluminum alloy, black anodized coating

Base Material

FR4 PCB (flammability to UL 94V-0 rated)

Potting Material

Epoxy (UL94-V0)

Pin Material

Copper alloy with gold plate over nickel underplate

Heatsink (optional)

See page 9

SAFETY

Safety Approvals (pending)

UL/cUL 60950-1 recognition (CSA certificate), IEC/EN 60950-1 (CB-scheme)

EMI-FILTER TO MEET EN55022, CLASS A; FCC PART 15, LEVEL A

Conducted and Radiated Emissions EN55022 Class A

C3

C2

DH40 Module

Single Output

C1

-INPUT

+INPUT

-OUTPUT

+OUTPUT

DH40 Module

Dual Output

-INPUT

+INPUT

C1

C3

C2

-OUTPUT

COMMON

+OUTPUT

Part No

DH12SXX-40

DH24SXX-40

DH48SXX-40

Part No

DH12DXX-40

DH24DXX-40

DH48DXX-40

C1

10µF/25V 1812 MLCC

4.7µF/50V 1812 MLCC

2.2µF/100V 1812 MLCC

C1

10µF/25V 1812 MLCC

4.7µF/50V 1812 MLCC

2.2µF/100V 1812 MLCC

C2, C3 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC

C2, C4 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC 1000pF/2KV 1808 MLCC