646_V01 LITTELFUSE | Alldatasheet
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Technical content
© 2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 06/03/22
646 Series
Molded Base Fuse Block For 5×20mm Fuses 26.6 9.7 14.5 24.5 22.5 10.4 4.7 Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand. Contact Littelfuse for an auto-insertable fuse, holder and adapter assembly. Compatible Fuse Sizes For 5×20mm Fuses Materials Holder: Black Thermoplastic, UL94 V-0 Polyamide PA 6.6 Cover: Transparent Thermoplastic,UL94 V-0, Polycarbonate PC Adapter: Polyester PBT , UL94 V-0 Metal Parts: Tin plated Copper alloy Electrical Data (23ºC) Rated Voltage: 250V Max. Current/Power: 6.3A/2.5W 5A/1W (with No. 648) 6.3A/1 .6W (with No. 640) Mounting Solder pins 0.5mm×1 .2mm Ø 3mm screw hole may be used optionally Minimum Cross Section Conducting path - 0.2mm2 Unit Weight 1 .6g (Holder), 1 .0g (Cover), 1 .0g (Adapter) RoHS Pb Product Characteristics Dimensions 1.5 +0.1 22.6 +0.3 -0.1 4.5 5.5 1.2 7.5 4.6 9 6 7.5 ø3.2 22.1 Max. 25.8 Min. 21 A 22.7 1.3 8.8±0.5 Position of the Mid-Fuse-LinkSnap in Locking Device Max. 25.2 Min. 21 8.8±0.5 A 1.3 22.7 Position of the Mid-Fuse-Link Pic 1 Pic 2
Ordering Information
64000001003 Adapter - Black
64000001403 Adapter - Brown
64000001503 Adapter - White
64000001603 Adapter - Y ellow
64000001703 Adapter - Green
64000001903 Adapter - Blue
64800001009 Clear Cover
Ordering PN Description Pic Meas. "A" For PCB-Thickness
64600001003 Fuse Block 1 5mm 3mm
64600001223 Fuse Block 1 3.2mm 1 .5mm 64600001233 Fuse Block 2 3.3mm 1 .5mm Ordering PN Description Fuse PN Block PN 64612007113 Fuse & Block Assy. 0215002.MXP 646000123364612007123 Fuse & Block Assy.0219002.MXAP 64614007143 Fuse & Block Assy. 0218004.MXP Recommended Hole Pattern Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics. Note: If used with cover, refer to Fuseology for information on proper fuse block re-rating. All dimensions in millimeters. Resources Accessories Samples Additional Information
648 Cover
(Optional Cover)
640 Adapter
(Optional Adapter)