SI9108DW The Siliconix SI9108DW is a 1 W high-voltage switchmode regulator designed for DC/DC converters. It features a wide input voltage range and a 200V, 250mA MOSFET.
Mfr Part #:

SI9108DW

Available from 1 distributors
Mfr Name: Siliconix
Siliconix
The Siliconix SI9108DW is a 1 W high-voltage switchmode regulator designed for DC/DC converters. It features a wide input voltage range and a 200V, 250mA MOSFET.
✓ Total Stock: 110 pcs
$ Price Range: $0.78

SI9108DW Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
110 pcs
110 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

SI9108DW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Efficiency
Input Voltage
Junction Temperature
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Output Current
Output Voltage
Power Consumption
Storage Temperature
Supply Current

SI9108DW Description

Short technical summary and product information.

The Siliconix SI9108DW is a monolithic BiC/DMOS integrated circuit designed for high-efficiency DC/DC converters, particularly in ISDN terminals up to 3 watts. It operates with a wide input voltage range from 10 V to 120 V and includes a 200 V, 250 mA MOSFET.

 

Key features include current-mode control, low power consumption (less than 5 mW), and a maximum duty cycle of 99.9%. The device also incorporates an internal start-up circuit and SHUTDOWN and RESET functions. Its low supply current of 0.5 mA max enables designs with up to 60% efficiency at 25 mW, meeting CCITT I.430 specifications.

 

The SI9108DW is available in 16-pin wide-body SOIC, 14-pin plastic DIP, and 20-pin PLCC packages. It is specified for industrial temperature ranges from -40 °C to 85 °C. This device can be used with a transformer to implement isolated flyback power converter topologies for single or multiple regulated DC outputs.

SI9108DW Quick Information

Product Type: Switchmode Regulator
Canonical Name: Siliconix SI9108DW 1 W High-Voltage Switchmode Regulator
Subcategory: DC DC Switching Controllers

SI9108DW Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SI9108DW Estimated Pricing

Qty Low High
1+ $0.78 $0.78

Estimated market price range - modelled values for guidance only, not live distributor offers.

SI9108DW Features

  • 1 W high-voltage switchmode regulator
  • 10 V to 120 V input range
  • 200 V, 250 mA MOSFET
  • Low power consumption (< 5 mW)
  • Available in SOIC, DIP, and PLCC

SI9108DW Applications

  • High-efficiency DC/DC converters
  • ISDN terminal power supplies
  • Isolated flyback power converters
  • Single or multiple DC outputs

SI9108DW FAQs

6 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the SI9108DW?

The input voltage range is 10 V to 120 V.

What is the maximum output current for the SI9108DW?

The maximum output current is 250 mA.

What is the operating temperature range for the SI9108DW?

The operating temperature range is -40 °C to 85 °C.

What packages is the SI9108DW available in?

The SI9108DW is available in 16-pin wide-body SOIC, 14-pin plastic DIP, and 20-pin PLCC packages.

What is the RoHS status of the SI9108DW?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the SI9108DW?

The Moisture Sensitivity Level (MSL) is 1 Unlimited.

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