MPT Power Your Critical Mission Today VHRF1-28 SERIES HIGH RELIABILITY COTS EMI FILTERS Models Available 1 A output -40 °C to 100 °C Operation 1.0 DESCRIPTION The VHRF1 series of COTS EMI filters is a cost effective solution use in defense, avionics and manufacturing industries. A wide input voltage range accommodates nominal 28 V inputs. The VHRF1 EMI filter is designed to filter the conducted emissions of multiple VHR series DC-DC converters up to its current rating, providing compliance to MIL-STD-461D-F for conducted emissions. A proven design heritage, no optoisolators and a rugged all metal package ensures long term reliability. The VHRF1 series is intended non flight-critical solutions in military, avionics, unmanned systems as well as manufacturing equipment and controls. Testing is to JESD22, MIL-STD-810, and MIL-STD-883. These converters are designed and manufactured in a facility certified to ISO9001, J-STD-001 and IPC-A-610. This product may incorporate one or more of the following U.S. patents: 5,784,266 5,790,389 5,963,438 5,999,433 6,005,780 6,084,792 6,118,673 1.1 FEATURES • High Reliability at Low Cost • Up to 1.0 Amp Maximum Current • Up to 25 W Output Power • Wide Input Voltage Range: 0 to 50 Volts per MIL-STD-704 and MIL-STD-1275 • High Input Transient Voltage: 80 Volts for 1 sec per MIL-STD-704A • 55 dB Minimum Attenuation at 500 kHz • Wide Temperature Range, -40 °C to 100 °C • Internally Conformal Coated • Standard Six Sided Non-Hermetic Rugged Metal Package 1.2 COMPLIANCE • MIL-STD-1275, MIL-STD-704 • Meets MIL-STD-461C-F conducted omissions requirements when used with a VHR Series DC-DC converter • Meets conducted susceptibility requirements of MIL-STD-461C, CS01 and CS02, and MIL-STD-461C-F when used with a VHR Series DC-DC converter • Meets EN55022/EN55032 Class A and B when used with an appropriate VHR DC-DC Converter 1.3 PACKAGING • Low-profile: 1.110" x 1.110" x 0.400" • Max weight: 21 g 1.4 SIMILAR PRODUCTS AND ACCESSORIES • DVMA28 1 A EMI filter for military/avionics applications • VXRF2-28 2 A EMI filter for military/commercial applications • VPTF1 1 A EMI filter for military/commercial applications • EMI filters, Thermal Pads, Front-End Modules and Accessories SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030 • [email protected] •

1. 0.47pF / 500V minimum required for EN55022 and EN55032 only SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030 • [email protected] • www.vptpower.com

3.1 ABSOLUTE MAXIMUM RATINGS 1. Derate linearly to 0 at 110 °C 2. Verified by qualification testing SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030 • [email protected] • www.vptpower.com

4.0 PERFORMANCE CURVES Tcase = 25 °C, Vin = +28 V ± 5%, Full Load, Unless Otherwise Specified 4.1.1 Two VHR5-2800S without VHRF1-28 EMI Filter Note 1: Minimum 0.47 uF 500 V capacitor required as shown in Section 2.2 Note 2: Tcase = 25 °C, Vin = +24 V ± 5%, Full Load Note 3: Limit lines shown are average limit SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030 • [email protected] • www.vptpower

1. Case temperature is measured on the center of the baseplate surface. 2. Materials: Baseplate (Aluminum, conductive conversion coating); Cover (Nickel Plated); Pins (Copper, gold over nickel plating) 3. This Package is not hermetic. VPT offers a wide range of hermetic products. Please contact VPT for details if hermetic products are required. SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030 • [email protected] • www.vptpower.com

Input Return Connection 2 28VIN Positive Input Voltage Connection 3 28VOUT Positive Output Voltage Connection 4 CASE Case Connection 5 OUTCOM Output Return Connection Screening Condition Internal Visual IPC-A-610, Class 3 External Visual Internal Procedure (1) (2) Product Nominal Input Series Voltage Please contact your sales representative or the VPT Inc. Sales Department for more information concerning additional environmental screening and testing, different input voltage, output voltage, power requirements, and source inspection. SALES INFORMATION: phone (425) 353-3010 • fax (425) 353-4030...

9.0 CONTACT INFORMATION To request a quotation or place orders please contact your sales representative or the VPT, Inc. Sales Department at: Phone: Fax: E-mail: All information contained in this datasheet is believed to be accurate, however, no responsibility is assumed for possible errors or omissions. The products or specifications contained herein are subject to change without notice. VPT, its logo and tagline are registered trademarks in the U.S. Patent and Trademark Office. 10.0 ADDITIONAL INFORMATION Visit the VPT website for additional technical resources, including: Product Literature...