WRA_

WRA_

WRA_

WRA_

WRA_

WRA_

WRA_

Z

Z

Z

Z

Z

Z

S-

S-

S-

S-

S-

S-

2

2

2

2

2

2

W

W

W

W

W

W

＆

＆

＆

＆

＆

＆

WRB_

WRB_

WRB_

WRB_

WRB_

WRB_

Z

Z

Z

Z

Z

Z

S

S

S

S

S

S

2

2

2

2

2

2

W

W

W

W

W

W

Series

http://www.microdc.cn

Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 2 of 2

Note:

1.

The load shouldn't be less than 10%, otherwise ripple will increase dramatically.

2.

Operation under 10% load will not damage the converter; However, they may not meet all specification listed.

3.

All specifications measured at Ta=25 ° C, humidity<75%, nominal input voltage and rated output load unless

otherwise specified.

4. In this datasheet, all the test methods of indications are based on corporate standards.

5.

Only typical models listed, other models may be different, please contact our technical person for more details.

General

General

General

General

General

General

General

Specifications

Specifications

Specifications

Specifications

Specifications

Specifications

Specifications

Parameter

Parameter

Parameter

Parameter

results

results

results

results

Temperature ranges

– Operating

– Case temperature

– Storage

–40°C to +85°C

+90°C max.

–55°C to +105°C

Derating (convection cooling)

3.3 %/K above 70°C

Humidity (non condensing)

95 % rel. H max.

Reliability, calculated MTBF (MIL-HDBK-217F at +25°C, ground benign)

>1 Mio h

Isolation voltage (60 sec.)

– Input/Output

1’500 VDC

Isolation capacitance

– Input/Output

500 pF max.

Isolation resistance

– Input/Output (500 VDC)

>1‘000 M Ohm

Switching frequency

100 to 650 kHz (PFM)

Remote On/Off control

– On:

– Off:

– Off stand by input current

<0.6 VDC or open circuit

2.9 to 15 VDC

1 mA typ / 3 mA max.

Microdc Professional Power Module,Inc.

Tel:0086-20-86000646

E-mail:tech@microdc.cn

Website:http://www.microdc.cn

RoHS

RoHS

RoHS

RoHS COMPLIANT

COMPLIANT

COMPLIANT

COMPLIANT INFORMATION

INFORMATION

INFORMATION

INFORMATION

This series is compatible with RoHS soldering systems with a peak wave solder temperature

of 300°C for 10 seconds.

The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin

with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this

series are backward compatible with Sn/Pb soldering systems.

REACH

REACH

REACH

REACH COMPLIANT

COMPLIANT

COMPLIANT

COMPLIANT INFORMATION

INFORMATION

INFORMATION

INFORMATION

This series has proven that this product does not contain harmful chemicals, it also has

harmful chemical substances through the registration, inspection and approval.

Physical

Physical

Physical

Physical

Physical

Physical

Physical

Specifications

Specifications

Specifications

Specifications

Specifications

Specifications

Specifications

Parameter

Parameter

Parameter

Parameter

results

results

results

results

Casing material

non-conductive plastic

Potting material

epoxy (UL 94V-0 rated)

Weight

6.5 g (0.23 oz)

Soldering temperature

max. 260°C / 10 sec.

Environmental compliance

– Reach

– RoHS directive 2002/95/EC

http://www.microdc.cn/uploadfiles/WRA(B)-ZS-2W.pdf

All

All

All

All

All

All

All

specifcations

specifcations

specifcations

specifcations

specifcations

specifcations

valid

valid

valid

valid

valid

valid

at

at

at

at

at

at

nominal

nominal

nominal

nominal

nominal

nominal

input

input

input

input

input

input

voltage,

voltage,

voltage,

voltage,

voltage,

voltage,

full

full

full

full

full

full

load

load

load

load

load

load

and

and

and

and

and

and

+25

+25

+25

+25

+25

+25

C

C

C

C

C

C

after

after

after

after

after

after

warm-up

warm-up

warm-up

warm-up

warm-up

warm-up

time

time

time

time

time

time

unless

unless

unless

unless

unless

unless

otherwise

otherwise

otherwise

otherwise

otherwise

otherwise

stated.

stated.

stated.

stated.

stated.

stated.

stated.

Outline

Outline

Outline

Outline

Outline

Outline

Outline

Dimensions

Dimensions

Dimensions

Dimensions

Dimensions

Dimensions

Dimensions

Pin

Single

Dual

1

-Vin(GND)

-Vin(GND)

2

+Vin(Vcc)

+Vin(Vcc)

3

Remote On/Off

Remote On/Off

5

No function

No function

6

+Vout

+Vout

7

-Vout

Common

8

No function

-Vout

Note:specifications can be changed any time without notice.

Dimensions in [mm], () = Inch

Pin diameter ø 0.5 ±0.05

(0.02 ±0.002)

Tolerances

±0.5 (±0.02)

Pin pitch tolerances ±0.2 (±0.008)