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881 SeriesHigh Current SMT FusesApril 2017
2Confidential and Proprietary | Littelfuse, Inc. © 2017 2Confidential and Proprietary | Littelfuse, Inc. © 2017
881 Series – Product Overview
Product Family/Package• NANO2® Subminiature Fuse Product
Family• Surface Mountable Fuse• 12.5mm x 10.0mm Footprint
Series Ratings/Type• Ultra high-current SMT fuses• 75VDC rated• 60A to 100A current ratings available• 1500A Interrupting current @ rated voltage• -50oC to 100oC operating temperature
Agency Approvals
Environmental Compliance
• UL Recognized
• RoHS Compliant• Halogen free• 100% Pb free
Packaging• Tape and Reel• Pack quantity = 500 pieces
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881 Series – Product OverviewWhat significance does it bring to the market?
“881 Series SMT Fuse provides a single fuse solution with 75VDC Current Rating(60A to 100A range) for applications which require high current load
in a limited space.”
§ Higher wattage equipments which require less board space need overcurrentprotection with fuse rating up to 100A
§ 881 Series High Current will help to the Design Engineer to achieve excellent and uncompromised solution to eliminate the paralleling fuses
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881 Series Features & Benefits
Available in 60A ~ 100A in a small footprint (12.5mm x 10mm) and Low Profile (6.8mm)
Single fuse solution for high current application requirements. Parallel fusing or use of over specked industrial type fuses can be avoided
High wattage equipment can be designed with less board space reserved for protection components
High interrupting rating at 1500A@75VDC Relatively high interrupting rating will suit a wide
variety of applications
Opening time at 200% overcurrent available at 60 secsmax
200%A
Guaranteed protection against overload and short circuit events in applications
Very low cold resistance valuesLow temperature rise and voltage drop
Enhance power efficiency by optimized thermal performance and minimizing power loss
Key Features Key BenefitsA
Size
ΩmV
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881 Series Features & Benefits
Wide operating temperature range from -55oC to 100oC Applicable to a wide range and harsh operating
environment
Robust Fuse design Enhanced reliability and less susceptible to temperature cycling and vibration effects
RoHS compliant, Halogen Free, 100% Pb-Free Environmental friendly and harmless to human
Surface Mount Fuse Compatible with high volume assembly (Pick-and-place) requirements with the SMD configuration
Key Features Key Benefits
SMD
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881 Series Applications
DATA CENTER
POWERSYSTEM
INDUSTRIALTOOLS
High End Servers
Server Chassis, Backplane Boards and Line Cards
Fan Control Systems
Power Distribution Units (PDUs) & Base Station Power Supply
Voltage Regulator Modules
Energy Storage Systems
Portable Industrial Automation Tools Heavy robotic machines
UPS
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881 Application Diagram
Littelfuse 881 Series SMT Fuse provides a single fuse solution with 60 to 100A Current Rating for Blade Server
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Primary Target Customers and Markets
DATA CENTER
POWERSUPPLIES
INDUSTRIALTOOLS
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Comparison of 881 Series with Existing Product Series from Littelfuse
What differentiates 881 Series?
§ Extension of the available ratings of the LF 456 Series
§ Higher voltage and Interrupting rating than the LF 456 Series
§ Smaller in size than the LF TLS Series
LF 881 Series
Footprint/Height 12.5 x 10 x 6.8mm
Current Rating 60A ~ 100A
Voltage Rating 75VDC
Interrupting Rating 1500A@75VDC
Agency Approval
LF 456 Series
LF TLS Series
OverloadPerformance
200%, 60s MAX
cURus
12.5 x 4.5 x 4.5mm
Up to 40A
72VDC
180A@72VDC
200%, 60s MAX
cURus
40 x 14mm Φ
Up to 125A
170VDC
10kA@170VDC
None
UR
Product Photo/ Illustration
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Comparison of 881 Series with CompetitionLF 881 Series
Footprint/Height 12.5 x 10 x 6.8mm
Current Rating 60A ~ 100A
Voltage Rating 75VDC
Interrupting Rating 1500A@75VDC
Agency Approval
SxxDC72VBL
Series
MxxJHB/JHC
Series
200%, 60s MAX
cURus
Up to 70A
72VDC
1kA@72VDC
200%, 120s MAX
None Specified
Up to 100A
60VDC
600A@60VDC
UR (up to 60A only)
62 x 12mm Φ 7.3 x 5.8 x 4.2mm
Product Photo/ Illustration
What differentiates 881 Series?§ Higher voltage and
Interrupting rating than competitions
§ Faster opening time at 200% overload current
§ Smaller in size than the SxxDC72VBL Series parts
§ UL safety agency approval for all ratings
200%, 60s MAXOverloadPerformance
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881 Series Electrical Specifications
Current Rating (A) Amp Code
Max Voltage Rating
(V)
InterruptingRating
Nominal Cold
Resistance (mΩ)
Nominal Voltage
Drop(mV)
Nominal Melting I2t
(A2sec)
Agency Approval
60 060.
75Vdc 1500A @ 75Vdc
0.81 75 1050 X
70 070. 0.74 85 1250 X
80 080. 0.56 80 3300 X
90 090. 0.54 85 4300 X
100 100. 0.45 80 6900 X
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881 Series Electrical Specifications
Current Rating (A)Typical Case Temperature Rise (oC)*
@ 50%In @ 75%In @100%In
60 14 35 60
70 15 37 70
80 16 39 85
90 19 49 105
100 23 53 120
NOTE: * Typical values based on tests conducted with fuse mounted on FR-4 circuit board of 0.062” (1.6mm) thickness with 6oz. (210μm) Cu.
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Dimensions, Marking and Part Numbering System
LF75V100A
Voltage Rating
Ampere Rating
Brand Logo
Part Numbering System
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Pricing, Samples, Availability and Contacts• Pricing and Samples
Please contact Littelfuse product management and sales representatives
• Production Availability• Production lead time: 8-10 weeks• 881 Series is available in quantities of 500 in tape and
reel packaging
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Sales Tools, Technical Support and Keywords• Current datasheets are available on the Littelfuse website: www.littelfuse.com.─ Enter “881” in the search box.─ Samples are available by contacting your Littelfuse sales representative.
Application and technical support available at:─ Phone: 1-800-999-9445─ Fax: 1-847-391-0459
Product Management ─ Product Manager: Daniel Wang;
Email: [email protected]─ Asst. Product Manager: John E.C. Semana:
Email: [email protected]