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

3

Ordering Information

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

Input

Output

Efficiency

Model Number

Voltage

Voltage / Current

36V to 75V

12V @ 25A

93%

AEH25B48(N)-(5)(6)(T)

OPTION:

suffix “N”

= Negative Enable

non suffix “N”

= Positive Enable (default)

suffix “-6”

= 3.7mm pin length

suffix “-5”

= 4.5mm pin length

default pin length

= 5mm nominal pin length

suffix “T”

= “Tuned” version for slow start up time

Typical efficiency measurement taken at nominal line, full load, 25°C ambient.

1 +Vi

n

1.90

[48.3]

1.50

[38.1]

1.20

[30.4]

0.90

[22.8]

1.90

[48.3]

1.50

[38.2]

1.20

[30.5]

0.90

[22.9]

5

4

2 Enabl

e (On/Of

f

)

9 +Out

put

M ECHANI

CAL TOLERANCE ± .

002(0.

5)

PI

N PLACEM ENT TOLERANCE :± 0.

005(0.

127)

ALL DI

M ENSI

ONS ARE I

N I

NCHES (MI

LLI

M ETERS)

PI

N SI

DE UP

3

2

1

7

6

9

3 CASE

7 Tri

m

8 + Sense

6 -Sense

5 -Out

put

NOTES:

4 -Vi

n

PI

N ASSI

GNM ENT

0.04Ø

[2.0Ø]2 PLACES

PI

N SI

DE DOW N

1.90

[48.3]

1.90

[48.3]

2.30

[58.4]

0.50

[12.7]

0.20

[5.1]

0.20

[5.1]

-Vi

n

+Vi

n

0.50

[12.7]

M3 X0.5 M OUNTI

NG HOLE

0.50

[12.7]

4 PLACES

2.40

[61.0]

2.00

[50.8]

-Out

put

+Out

put

SI

DE VI

EW

0.46

[11.8]

0.08Ø

0.20

[5.2]

[1.0Ø]7 PLACES

Pin Assignments

Single Output

1. +Vin

2. Enable (On/Off)

3. Case (AEH)

4. -Vin

5. - Output

6. - Sense

7. Trim

8. + Sense

9. + Output

Notes:

1. 20 MHz BW with external 10uF/25V tantalum in

parallel with 0.1uF/50V X7R ceramic capacitor

placed across the output.

2. Requires a 2.2 uf, 100V film capacitor

connected between +V in and -V in to meet

FCC class A and ETS300-386-1 requirements

for conducted noise. Consult Factory for filtering

information to meet FCC class B, VDE or EIC

specifications.

3. All specifications are typical at nominal line, full

load, and 25°C unless otherwise noted.

4. All specifications subject to change without

notice. Mechanical drawings are for reference

only

5. Technical Reference Notes should be consulted

for detailed information when available

6. Warranty: 1yr

* Astec reserves the right to make changes to the information

contained herein without notice and assumes no liability as a

result of its use or application. (REV06: JANUARY 26, 2006)

PIN LENGTH OPTION

“-5”: 4.5mm nom

“-6”: 3.7mm nom

default is 5mm nom

see A

NOTE:

All dimensions are in Inches [millimeters]

Pin Placement Tolerance: ± 0.005 [0.127]

Mechanical Tolerance: ± 0.002 [0.5]