438A_V01 LITTELFUSE

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Technical content

Surface Mount Fuses Datasheet © 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/30/24 438A Series AEC-Q200 Qualified > Ceramic Fuse

Description

The 438A series AEC-Q200 Qualified fuses are specifically tested to cater secondary circuit protection needs of compact auto electronics application. The general design ensures excellent temperature stability and performance reliability. The high I²t values which is typical in the Littelfuse ceramic fuse family ensure high inrush current withstand capability. Agency Approvals Agency Agency File Number Ampere Range E10480 0.25A – 6A 29862 0.25A – 6A J50489122 0.25A – 6A N/A 0.25A – 6A N/A 0.25A – 6A Features & Benefits Electrical Characteristics for Series ■ Operating Temperature from -55ºC to +150ºC ■ 100% Lead-free, RoHS compliant and Halogen-free ■ Suitable for both leaded and lead-free reflow/wave soldering ■ Recognized to UL/CSA/NMX 248-1 and UL/CSA/NMX 248- ■ Conforms to EN 60127-1 and EN 60127-7 ■ CE Mark indicates suitability for the European Market ■ UKCA Mark indicates suitability for the UK Market ■ AEC-Q200 Qualified % of Ampere Rating Ampere Rating Opening Time at 25ºC 100% 0.250A – 6A 4 Hours, Minimum 250% 0.250A – 6A 5 Seconds, Maximum

Applications

(A) Amp Code Max. Voltage Rating (V) Interrupting Rating (AC/DC)1 Nominal Resistance (Ohms)2 Nominal Melting I2t (A2Sec.)3 Nominal Voltage Drop At Rated Current (V)4 Nominal Power Dissipation At Rated Current (W) Agency Approvals 0.25 .250 63VDC 50A @ 63VDC 50A @ 32VAC 2.218 0.0017 0.550 0.138 x x x x 2 002. 32 50A @ 32VDC/12VAC 0.0490 0.181 0.107 0.214 x x x x Electrical Specifications by Item Notes: 1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting Rating tested at rated voltage with time constant < 0.8 msec. 2. Nominal Resistance measured with < 10% rated current. 3. Nominal Melting I²t measured at 1 msec. opening time. RoHS Pb ■ Li-ion Battery ■ LED Head-Lights ■ Automotive Navigation System ■ TFT Display ■ Battery Management System (BMS) ■ Clusters 4. Nominal Voltage Drop measured at rated current after temperature has stabilized. Devices designed to carry rated current for 4 hours minimum. It is recommended that devices be operated continuously at no more than 80% rated current. See “Temperature Re-rating Curve”for additional re-rating information. Devices designed to be mounted with marking code facing up. Web Resources Download ECAD models, order samples, and find technical recources at www.littelfuse.com

Surface Mount Fuses Datasheet © 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/30/24 438A Series AEC-Q200 Qualified > Ceramic Fuse Average Time Current Curves 0.001 0.01 0.1 100 .250A 3.5A 2.5A 1.75A 1.25A .500A .375A .750A TIME IN SECONDS 0.1 1 10 100 CURRENT IN AMPERES Reflow Condition Pb – free assembly Pre Heat - T emperature Min (Ts(min)) 150°C - T emperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 seconds Average Ramp-up Rate (Liquidus T emp (TL) to peak) 3°C/second max. TS(max) to TL - Ramp-up Rate 5°C/second max. Reflow - T emperature (TL) (Liquidus) 217°C - T emperature (tL) 60 – 150 seconds Peak T emperature (TP) 260+0/-5 °C Time within 5°C of actual peak T emperature (tp) 10 – 30 seconds Ramp-down Rate 6°C/second max. Time 25°C to peak T emperature (TP) 8 minutes max. Do not exceed 260°C Soldering Parameters T emperature Re-rating Curve 100 120 140 -65 -45 -25 -5 15 35 55 75 95 115 135 155 TEMPERATURE (°C) PERCENT OF RATING Example: For continuous operation at 75 degrees celsius, the fuse should be rerated as follows: Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for continuous operation. Wave Soldering 260°C, 10 seconds max. Time Temperature TP TL TS(max) TS(min) tP tL tS time to peak temperature (t 25ºC to peak) Ramp-down Ramp-up Preheat Critical Zone TL to TP

Surface Mount Fuses Datasheet © 2024 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/30/24 438A Series AEC-Q200 Qualified > Ceramic Fuse Materials Body: Advanced Ceramic T erminations: Ag/Ni/Sn (100% Lead-free) Element Cover Coating: Lead-free Glass Moisture Sensitivity Level IPC/JEDEC J-STD-020, Level 1 Solderability IPC/EIC/JEDEC J-STD-002, Condition C Humidity T est MIL -STD-202, Method 103, Conditions D Resistance to Solder Heat MIL -STD-202, Method 210, Condition B Moisture Resistance MIL -STD-202, Method 106 High Temperature Storage MIL -STD-202 Method 108 with exemptions Thermal Shock T est JESD22 Method JA-104, Test Conditions B and N Biased Humidity MIL -STD-202 Method 103, 85°C/85% RH with 10% operating power for 1000 hrs Operational Life MIL -STD-202 Method 108, Test Condition D Resistance T o Solvents MIL -STD-202 Method 215 Mechanical Shock MIL -STD-202 Method 213, Test Condition C Thermal Shock MIL -STD-202, Method 107 , Condition B Mechanical Shock MIL -STD-202, Method 213, Condition A Vibration MIL -STD-202, Method 201 Vibration, High Frequency MIL -STD-202, Method 204, Condition D Dissolution of Metallization IPC/EIC/JEDEC J-STD-002, Condition D High Frequency Vibration MIL -STD-202, Method 204 Resistance T o Soldering Heat MIL -STD-202 Method 210, Test Condition B Solderability JESD22-B102E Method 1 T erminal Strength For SMD AEC-Q200-006 Board Flex AEC-Q200-005 Electrical Characterization Conducted at minimum, ambient, and maximum temperatures Product Characteristics Dimensions mm [in] 1.582 +/- 0.152 [0.062 +/- 0.006] 0.74 [0.029] 1.00 [0.039] 1.94 [0.076] 0.60 [0.024] (1.5A, 2A - 6A) 0.530 +/- 0.150 [0.021 +/- 0.006] 0.828 +/- 0.152 [0.033 +/- 0.006] 0.432 +/- 0.150 [0.017 +/- 0.006] Part Marking System Part Numbering System 0438 005. W R A Series Amp Code Quantity Code Packing Code AEC-Q200 Qualified R = Reel Pack Amp Code Marking Code .250 D .375 E .500 F .750 G 0 01. H 1 .25 J 1 .75 L 002. N 02.5 O 003. P 03.5 R 004. S 005. T 006. U Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 8mm Tape and Reel EIA-481, IEC 60286-3 3000 WR 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