Axial Lead & Cartridge Fuses 6x25mm > 70VDC Fuse > 688 Series 688 Series Lead-Free, 6x25mm Fuse RoHS Pb Description A 70Vdc rated ceramic fuse with remarkable interrupting rating in a compact 6x25mm package, which is well suited for circuit protection in telecom applications. Features • In accordance with Underwriter’s Laboratories Standard UL 248-14 • Available in cartridge version • RoHS compliant and Lead-free Agency Approvals Agency Applications Agency File Number Ampere Range T 50257715 01 30A E10480 5A - 40A • PDU in Telecom Datacenter • Wireless Transmission Base Station Additional Information Electrical Characteristics for Series % of Ampere Rating 100% 200% Ampere Rating 5A - 40A Opening Time Datasheet Samples Resources 4 Hours, Min. 120 Second, Max. Electrical Characteristic Specifications by Item Nominal Cold Resistance (mOhms) Nominal Melting I2t Under 10In (A2 sec) Agency Approvals Amp Code Amp Rating Voltage Rating Interrupting Rating 005. 5 70Vdc 2500A @ 70Vdc 22 118 x 006. 6 70Vdc 2500A @ 70Vdc 21 132 x 010. 10 70Vdc 2500A @ 70Vdc 10 570 x 015. 15 70Vdc 2500A @ 70Vdc 6 554 x 030.* 30 70Vdc 2500A @ 70Vdc 2.1 4200 040.* 40 70Vdc 250Vac 2500A @ 70Vdc 1500A @ 250Vac 1.55 7800 x x x Note: *Surge rating: 1.2/50-8/20μs, 20KV/10KA surge is available for 30A and 40A. © 2015 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: 07/14/15 Axial Lead & Cartridge Fuses 6x25mm > 70VDC Fuse > 688 Series 30A 40A 10000 15A 10A Average Time Current Curves 5A 6A Temperature Re-rating Curve 1000 TIME IN SECONDS 100 10 1 0.1 0.01 1 10 CURRENT IN AMPERES 100 1000 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 Wave Parameter 260 240 Preheat: 220 (Depends on Flux Activation Temperature) 200 180 160 140 120 100 80 60 40 Lead-Free Recommendation (Typical Industry Recommendation) Temperature Minimum: 100°C Temperature Maximum: Preheat Time: 150°C 60-180 seconds Solder Pot Temperature: 260°C Maximum Solder Dwell Time: 2-5 seconds Recommended Hand-Solder Parameters: Time (Seconds) Cooling Time Preheat Time Dwell Time © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/14/15 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 30 0 0 20 20 10 Temperature (°C) - Measured on bottom side of board 300 Solder Iron Temperature: 350°C +/- 5°C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. Axial Lead & Cartridge Fuses 6x25mm > 70VDC Fuse > 688 Series Product Characteristics Materials Terminal Strength Solderability Product Marking Packaging Body : Ceramic Cap : Tin–plated Copper Leads: Tin-plated Copper MIL-STD-202, Method 211, Test Condition A Operating Temperature: –55ºC to 125ºC. Thermal Shock: MIL-STD-202, Method 107, Test Condition B MIL-STD-202 Method 208 Vibration MIL-STD-202, Method 201 Brand logo, current and voltage ratings, agency approval marks Available in Bulk and Ammo packaging (M=1000 pcs/pkg) Humidity MIL-STD-202, Method 103, Test Condition A: High RH (95%) and elevated temp (40ºC) for 240 hours Salt Spray MIL-STD-202, Method 101, Test Condition B Dimensions Part Numbering System Measurements displayed in millimeters 0688 xxxx M X P Series Amp Code 25.2㼼0.3 Refer to Amp Code column of Electrical Characteristics Table 6.3+0.15/-0.05 Quantity Code M = 1000 Packaging Code 5.5㼼0.2 X = Filler Lead-free Packaging Packaging Specification Quantity Quantity & Packaging Code Taping Width Ammo N/A 1000 MAT4P N/A Bulk N/A 1000 MX N/A Packaging Option 688 Series © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/14/15