Mfr Part #:

SD250-1

Mfr Name: Coilcraft

The Coilcraft SD250-1 is a Base/Gate Driver Transformer designed for efficient power conversion. It features a frequency range of 10-250 kHz and 3750 Vrms isolation.

✓ Total Stock: 45 pcs

$ Price Range: $0.04

SD250-1 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
OTL Components ✓ Non-Authorised Inventory information	45 pcs On Request	45 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

SD250-1 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Coilcraft
Inductance	1.5 mH
Termination	Tin-silver over tin over copper
Turns Ratio	1:1
Weight	15.6 – 16.8 g

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SD250-1 Description

Short technical summary and product information.

The Coilcraft SD250-1 is a Base/Gate Driver Transformer designed as a lower-cost alternative to toroidal equivalents. It operates within a frequency range of 10 kHz to 250 kHz and beyond, making it suitable for various power applications.

Key electrical specifications include a minimum inductance of 1.5 mH and a maximum leakage inductance of 4.0 µH. The transformer provides 3750 Vrms isolation between windings and is constructed with a UL approved Class 130°C insulation system (UL File E83628). The primary winding has a DCR of 0.4 Ω, and the secondary winding(s) have a maximum DCR of 0.75 Ω per section. The volt-time product is rated at 375 V-µsec, and the capacitance between primary and secondary windings is a maximum of 50 pF.

This transformer series utilizes industry-standard pin centers for ease of integration. It is compliant with VDE, IEC, UL, and CSA standards. The operating temperature range is from -40°C to +85°C. The component weighs between 15.6 and 16.8 grams and features tin-silver over tin over copper termination. It is supplied in trays of 49 units.

Custom versions are available from Coilcraft to meet specific application requirements, with options for different bobbin heights and wiring sections.

SD250-1 Quick Information

Product Type: Base/Gate Driver Transformer

Canonical Name: Base/Gate Driver Transformer

Subcategory: Base/Gate Driver Transformer

SD250-1 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

SD250-1 Estimated Pricing

Qty	Low	High
1+	$0.04	$0.04

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

SD250-1 Features

Lower cost than toroidal equivalents.
Frequency range of 10 - 250 kHz and up.
3750 Vrms isolation between windings.
UL approved Class 130°C insulation system.
Industry standard pin centers.

SD250-1 Applications

Suitable for power supply circuits.
Used in various signal conditioning applications.
Ideal for high-frequency power conversion.
Applicable in industrial control systems.
Integrated into telecommunications equipment.

SD250-1 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the inductance of the Coilcraft SD250-1?

The inductance of the Coilcraft SD250-1 is 1.5 mH, measured at 1 Vrms, 15.75 kHz.

What is the maximum leakage inductance of the SD250-1?

The maximum leakage inductance of the SD250-1 is 4.0 µH, measured at 1 Vrms, 15.75 kHz.

What is the DCR of the Coilcraft SD250-1?

The nominal DCR of the Coilcraft SD250-1 is 0.4 Ω.

What is the operating temperature range for the SD250-1?

The operating temperature range for the SD250-1 is -40°C to +85°C.

What is the isolation voltage of the Coilcraft SD250-1?

The isolation voltage between windings for the Coilcraft SD250-1 is 3750 Vrms.

What is the turns ratio of the SD250-1?

The turns ratio of the SD250-1 is 1:1.