SIW SERIES 15 AND 30 WATTS
WWW
.WALLINDUSTRIES.COM
1603 778 2300
15 AND 30 WATTS - SIW SERIES
Ultra-Wide Input, Triple Output Protection
FEATURES
• Ultra-Wide Input Voltage Range (4:1)
• LC Network Input Filter
• Six-Sided Shielding
• 24VDC Nominal Input - 50VDC Surge,
48VDC Nominal Input - 100VDC Surge
• Continuous Current Limiting Short Circuit Protection
• No Derating to +85°C Case Temperature
• Industry Standard Package and Pin Out
• Ten Year Warranty
THE SIW SERIES FROM WALL INDUSTRIES
The SIW Series operates over an ultra wide input range of 9-
36VDC or 20-75VDC and delivers up to 30 watts in a 2.56” x
3.0” x 0.84” package. Other key specifications of the SIW
Series include LC Network input filter for low reflected ripple,
efficiency to 85%, over voltage protection, remote on/off and
operation to +85°C (case) with no derating. Metallic case
provides six-sided shielding.
SPECIFICATIONS: SIW SERIES
All specifications apply @ +25 C ambient unless otherwise
noted.
INPUT SPECIFICATIONS
Input Voltages.............................................9-36, 20-75VDC
Nominal Input......................................................24, 48VDC
Input Filter.........................................................LC Network
Remote On/Off Control..........................Open collector TTL
OUTPUT SPECIFICATIONS
Output Current.......................................................see table
Output Voltage Tolerance
Primary Outputs.....................................................±1%
Auxiliary Outputs....................................................±3%
Output Trim.......................................±10%, singles outputs
Line Regulation..................................................See note 4
Load Regulation.................................................See note 5
Ripple/Noise (20MHz BW)...................................75mV p-p
Short Circuit Protection..............................Current Limiting
Over Voltage Protection........................................see table
GENERAL SPECIFICATIONS
Efficiency: at full load..........................................up to 85%
Isolation Voltage, input to output...........................500VDC
Isolation Resistance, input to output................500MOhms
Switching Frequency...................................100kHz typical
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature (case)........................-25 to +85°C
Storage Temperature....................................-55 to +100°C
Humidity (non-condensing)........................20% - 95% R.H.
PHYSICAL SPECIFICATIONS
Shielding..............................................................Six-sided
Weight......................................................................7.5 oz.
Case Material......................................Black coated metal
...........................................with non-conductive baseplate
Due to advances in technology, specifications subject to change without
notice.
15 AND 30 WATTS SIW SERIES
2
WWW.WALLINDUSTRIES.COM 603 778 2300
Input Output Output Current Over Voltage Model Model Model
Voltage Voltage (mA) Protection Number Number Number
(VDC) (VDC) 15W 25W 30W (VDC) 15 Watts 25 Watts 30 Watts
9 - 36 3.3 7576 5.1 SIW24S3.3-25
5 3000 6000 6.8 SIW24S5-15 SIW24S5-30
12 1250 2500 15 SIW24S12-15 SIW24S12-30
15 1000 2000 18 SIW24S15-15 SIW24S15-30
24 1250 27 SIW24S24-30
48 630 51 SIW24S48-30
±5 1500 3000 6.8 SIW24D5-15 SIW24D5-30
±12 625 1250 15 SIW24D12-15 SIW24D12-30
±15 500 1000 18 SIW24D15-15 SIW24D15-30
+5/±12 4000/420 6.8/15 SIW24T12-30
+5/±15 4000/340 6.8/18 SIW24T15-30
20-75 3.3 7576 5.1 SIW48S3.3-25
5 3000 6000 6.8 SIW48S5-15 SIW48S5-30
12 1250 2500 15 SIW48S12-15 SIW48S12-30
15 1000 2000 18 SIW48S15-15 SIW48S15-30
24 1250 27 SIW48S24-30
48 630 51 SIW48S48-30
±5 1500 3000 6.8 SIW48D5-15 SIW48D5-30
±12 625 1250 15 SIW48D12-15 SIW48D12-30
±15 500 1000 18 SIW48D15-15 SIW48D15-30
+5/±12 4000/420 6.8/15 SIW48T12-30
+5/±15 4000/340 6.8/18 SIW48T15-30
PIN CONNECTIONS
Single* Dual Triple
1 -Vin - Vin - Vin
2 +Vin +Vin +Vin
3 Remote Remote Remote
4 -Vout N/C N/C
5 +Vout N/C +5 Out
6 -Sense* -Vout -Vout
7 Output trimCommon Common
8 + Sense* +Vout +Vout
NOTES:
* Important: 30 Watt singles, “+ Sense Out” pin must connect
to “+ Vout” pin; “- Sense Out” pin must connect to “- Vout” pin
** 15 Watt singles, pin 6 and 8 are omitted, internally connect-
ed
1. All case and pin to case dimensions reference only unless
otherwise noted.
2. PC pins: 0.04” dia x 0.18” long (min.); typical 8 places
3. Pin to pin tolerance ±0.01”. Pin diameter tolerance ±0.005”
4. Singles/duals/triples ±0.5% LL-HL
5. Singles: ±1% 25 - 100% load
Duals 5V: ±3% 25 - 100% load
Duals 12&15V: ±1% 25 - 100% load
Triples: ±3% 25 - 100% load, 20% min load required on
Main.
6. Pins may be omitted on N/C pin functions, consult factory
7. Significant capacitive load on output may inhibit start-up and
operation, consult factory.
8. All DC/DC converters should be externally fused on the
front end for protection.
9. Limited trim capability on 48VDC output models, consult
factory.
15 AND 30 WATTS
SIW SERIES
WWW.WALLINDUSTRIES.COM
3603 778 2300
