EUROPE

Astec House, Waterfront Business Park

Merry Hill, Dudley

West Midlands, DY5 1LX, UK

Telephone: 44 (1384) 842-211

Facsimile: 44 (1384) 843-355

AMERICAS

5810 Van Allen Way

Carlsbad, CA 92008

Telephone: 760-930-4600

Facsimile: 760-930-0698

2

www.astecpower.com

ASIA

Units 2111-2116, Level 21

Tower1, Metroplaza

223, Hing Fong Road

Fwai Fong, New Territories

Hong Kong

Telephone: 852-2437-9662

Facsimile: 852-2402-4426

Ordering Information

Input Voltage

Output Voltage

Output Current

Model Number

36V to 75V

12.0V

4A

93.0%

A(X)O04B48 (N) - (6)(S)

36V to 75V

5.0V

12A

93.0%

A(X)O12A48 (N) - (6)(S)

36V to 75V

3.3V

20A

91.0%

A(X)O20F48 (N) - (6)(S)

36V to 75V

2.5V

20A

90.0%

A(X)O20G48 (N) - (6)(S)

36V to 75V

1.8V

25A

90.0%

A(X)O25Y48 (N) - (6)(S)

36V to 75V

1.5V

25A

88.5%

A(X)O25M48(N) - (6)(S)

36V to 75V

1.2V

25A

87.0%

A(X)O25K48 (N) - (6)(S)

OPTIONS:

(X) : “L” = Open Frame / Low Profile

“E” = Baseplate Construction

(N) : "N" = designates Negative Logic Enable (default is Positive Enable with no suffix “N” required)

(6) : “-6”= 3.7mm nominal pin length (default is 5mm nominal pin length with no suffix “-6” required)

(S) : “-S”= Surface Mount Termination (default is Through Hole Termination with no suffix “-S” required)

Single Output

1. +Vin

2. Enable (On/Off)

3. -Vin

5. -Sense

6. Trim

7. +Sense

Notes:

1. Efficiency measurements taken at full load, nominal

line and TA = 25°C.

2. 20 MHz bandwidth. External 10 uF tant. capacitor in

parallel with 1 uF ceramic capacitor placed across

the output and secondary return ground.

3. All specifications are typical at nominal line, full load

and TA = 25°C unless otherwise noted.

4. All specifications subject to change without notice.

5. Mechanical drawings are for reference only.

Dimensions are in inches [mm]. Pin placement

tolerance ± 0.005 [0.127]. Mechanical Tolerance ±

0.02 [0.5], recommended surface mount pads (min:

0.080 x 0.112 [2.03 x 2.84] / max: 0092 x 0.124 [2.34

x 3.15]); through hole pin diameter (Pins 4 & 8)

=

0.062 [1.57], others

= 0.04 [1.0] (6X).

6. Technical Reference Notes should be consulted for

detailed information.

7. Warranty: 1yr.

Pin Assignment

* Astec reserves the right to make changes to the information

contained herein without notice and assumes no liability as a

result of its use and application. (REV G: AUGUST 25, 2005).

0.75

[19.1]

2.19

[55.5]

0.15

[3.8]

0.30

[7.6]

0.45

[11.4] 0.60

[15.2] 0.75

[19.1]

0.15

[3.8]

0.45

[11.4]

0.31

[7.9]

0.15

[3.9]

0.32

[8.2]

0.15

[3.8]

0.30

[7.6]

0.45

[11.4]

0.60

[15.2]

0.75

[19.0]

0.15

[3.8]

0.45

[11.4]

0.75

[19.0]

2.00

[50.8]

0.40

[10.1]

0.23

[5.8]

0.15

PIN SIDE DOWN

0.39

[9.8]

0.15

[3.9]

ALO - OPENFRAME

SMT - Termination

AEO -BASEPLATE

SMT - Termination

TH - Termination

TH - Termination

See A

PIN LENGTH

A

Std Pin Length: 0.189 [4.8] MIN

0.205 [5.2] MAX

“-6” Option:

0.137 [3.5] MIN

0.152 [3.9] MAX

See A