UF304 / UF308 3A Ultra Fast Switching Rectifiers Features: High Efficiency • Fast reverse recovery time, trr. • Low forward voltage, VF. • Low cost axial packages. • Void-free plastic in DO-201AD package. DO-201AD • 3.0 Ampere operation at TA = 55°C with no thermal runaway. • Exceeds environmental standards of MIL-S-19500/228. • Ultra fast switching for high efficiency. Mechanical Data: Case : Moulded plastic. Terminals : Axial leads, solderable per MIL-STD-202, Polarity : Band denotes cathode. Mounting Position : Any. Method 208. Dimensions : Inches (Millimetres) Maximum Ratings and Electrical Characteristics: Ratings at 25°C ambient temperature unless otherwise specified. Resistive or inductive load, 60Hz. Parameters UF304 UF308 Peak reverse voltage, repetitive; VRM 400 800 Maximum RMS voltage 280 560 DC blocking voltage; VR 400 800 Average forward current, Io at TA = 55°C 3.8” lead length, 60Hz, resistive or inductive load Peak forward surge current IFM (surge) 8.3m seconds single half sine-wave superimposed on rated load (JEDEC method) Maximum forward voltage VF at 3.0A, 25°C Maximum reverse current at rated reverse voltage A 150 1.1 1.7 10.0 500 75 Typical junction resistance (Note 2) RθJA 50 50 Operating and storage temperature range Page 1 pF °C/W 75 -55 to +150 V mA mA 20.0 Reverse recovery time IF = 0.5A, IR = 1A, Irr = 0.25A V 3.0 TJ = 25°C TJ = 100°C Typical junction capacitance (Note 1) CJ Units ns °C 24/10/05 V1.0 UF304 / UF308 3A Ultra Fast Switching Rectifiers Notes: 1. Measured at 1MHz and applied reverse voltage of 4.0V dc. 2. Thermal resistance from junction to ambient and from junction to lead length 0.375” (9.5mm) PCB mounted. Rating and Characteristics Curves NOTE: 1. Rise Time = 7ns maximum Input Impedance = 1MΩ, 22pF Set Time 2. Rise Time = 10ns maximum Base For Source Impedance = 50Ω 50ns/cm IFM, Apk Average Forward Current (10)-AMP (10)-AAV Figure 1 - Reverse Recovery Time Characteristics and Test Circuit Diagram Ambient Temperature, °C Figure 3 - Forward Current Derating Curve Forward Voltage-VFM(Vpk) Figure 2 - Forward Characteristics Page 2 24/10/05 V1.0 UF304 / UF308 Instantaneous Reverse Leakage Current, Micro Amperes Peak Forward Surge Current, Amperes 3A Ultra Fast Switching Rectifiers Number of Cycles at 60Hz Figure 5 - Peak Forward Surge Current Percent of Rated Peak Reverse Voltage, % Figure 4 - Typical Reverse Leakage Characteristics Specifications VRRM maximum (V) 400 800 IF(av) (A) IFSM (A) 3.0 150 trr maximum (ns) VF (V) at IF = 3.0A 50 1.1 75 1.7 Length Diameter 9.5 5.3 Part Number UF304 UF308 Dimensions : Millimetres Page 3 24/10/05 V1.0 UF304 / UF308 3A Ultra Fast Switching Rectifiers Notes: International Sales Offices: AUSTRALIA – Farnell InOne FINLAND – Farnell InOne NETHERLANDS – Farnell InOne SWITZERLAND – Farnell InOne Tel No: Tel No: Tel No: ++ 61 2 9645 8888 Fax No: ++ 61 2 9644 7898 Fax No: ++ 358 9 345 5411 Fax No: ++ 31 30 241 7333 Tel No: ++ 41 1 204 64 64 Fax No: ++ 41 1 204 64 54 AUSTRIA – Farnell InOne FRANCE – Farnell InOne NEW ZEALAND – Farnell InOne UK – Farnell InOne Tel No: Tel No: Tel No: Tel No: ++ 43 662 2180 680 ++ 358 9 560 7780 ++ 33 474 68 99 99 ++ 31 30 241 7373 ++ 64 9 357 0646 ++ 44 8701 200 200 Fax No: ++ 43 662 2180 670 Fax No: ++ 33 474 68 99 90 Fax No: ++ 64 9 357 0656 Fax No: ++ 44 8701 200 201 BELGIUM – Farnell InOne GERMANY – Farnell InOne NORWAY – Farnell InOne UK – BuckHickman InOne Tel No: Tel No: Tel No: ++ 45 44 53 66 66 ++ 44 8450 510 150 ++ 32 3 475 2810 ++ 49 89 61 39 39 39 Fax No: ++ 32 3 227 3648 Fax No: ++ 49 89 613 59 01 Fax No: ++ 45 44 53 66 02 ++ 44 8450 510 130 BRAZIL – Farnell-Newark InOne HONG KONG – Farnell-Newark InOne Tel No: ++ 852 2268 9888 PORTUGAL – Farnell InOne UK – CPC ++ 55 11 4066 9400 Tel No: ++ 34 93 475 8804 ++ 44 8701 202 530 Fax No: ++ 55 11 4066 9410 Fax No: ++ 852 2268 9899 Fax No: ++ 34 93 474 5288 ++ 44 8701 202 531 CHINA – Farnell-Newark InOne IRELAND – Farnell InOne SINGAPORE – Tel No: Tel No: Tel No: ++86 10 6238 5152 Fax No: ++86 10 6238 5022 Farnell-Newark InOne Tel No: ++ 65 6788 0200 ++ 353 1 830 9277 Fax No: ++ 353 1 830 9016 Fax No: ++ 65 6788 0300 export EXPORT – Farnell InOne Tel No: ++ 44 8701 200 208 Fax No: ++ 44 8701 200 209 For enquiries from all other markets DENMARK – Farnell InOne ITALY – Farnell InOne SPAIN – Farnell InOne Tel No: Tel No: Tel No: ++ 45 44 53 66 44 ++ 39 02 93 995 200 ++ 34 93 475 8805 Fax No: ++ 45 44 53 66 06 Fax No: ++ 39 02 93 995 300 Fax No: ++ 34 93 474 5107 ESTONIA – Farnell InOne MALAYSIA – SWEDEN – Farnell InOne http://www.farnellinone.com Tel No: ++ 358 9 560 7780 Fax No: ++ 358 9 345 5411 Farnell-Newark InOne Tel No: ++ 60 3 7873 8000 Fax No: ++ 60 3 7873 7000 Tel No: ++ 46 8 730 50 00 Fax No: ++ 46 8 83 52 62 http://www.buckhickmaninone.com http://www.cpc.co.uk Disclaimer This data sheet and its contents (the "Information") belong to the Premier Farnell Group (the "Group") or are licensed to it. No licence is granted for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group's liability for death or personal injury resulting from its negligence. Multicomp is the registered trademark of the Group. © Premier Farnell plc 2004. Page 4 24/10/05 V1.0