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HomeProductsCircuit ProtectionPTC Resettable FusesMICROSMD350LR-2
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MICROSMD350LR-2 - Littelfuse Inc.

Manufacturer Part Number
MICROSMD350LR-2
Manufacturer
Littelfuse
Allelco Part Number
32D-MICROSMD350LR-2
ECAD Model
Parts Description
PTC RESET FUSE 6V 3.5A 1206
Package
1210 (3225 Metric)
Data sheet
PolySwitch Low Resistivity Catalog.pdf
microSMD350LR-2 Spec.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 4030

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Specifications

MICROSMD350LR-2 Tech Specifications
Littelfuse Inc. - MICROSMD350LR-2 technical specifications, attributes, parameters and parts with similar specifications to Littelfuse Inc. - MICROSMD350LR-2

Product Attribute Attribute Value  
Manufacturer Littelfuse  
Voltage - Max 6V  
Type Polymeric  
Time to Trip 10 s  
Thickness (Max) 0.039' (1.00mm)  
Size / Dimension 0.127' L x 0.102' W (3.22mm x 2.58mm)  
Series PolySwitch®, microSMD  
Resistance - Initial (Ri) (Min) 2.5 mOhms  
Ratings -  
Package / Case 1210 (3225 Metric)  
Product Attribute Attribute Value  
Package Tape & Reel (TR)  
Operating Temperature -  
Mounting Type Surface Mount  
Lead Spacing -  
Height - Seated (Max) -  
Current - Trip (It) 9 A  
Current - Max 50 A  
Current - Hold (Ih) (Max) 3.5 A  
Approval Agency CSA, UL  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2A (4 Weeks)
REACH Status
ECCN EAR99
HTSUS 8533.40.8070

Parts Introduction

Manufacturer Part Number

MICROSMD350LR-2

Manufacturer

littelfuse

Introduction

The MICROSMD350LR-2 is a high-performance polymeric resettable fuse from littelfuse. This device provides reliable overcurrent and overtemperature protection for sensitive electronic circuits, ensuring the safety and reliability of your electronic devices.

Product Features and Performance

Polymeric design for reliable resetting and protection

Rated for a maximum voltage of 6V

Holds up to 3.5A of current and trips at 9A

Can withstand up to 50A of current

Trips within 10 seconds under fault conditions

Initial resistance of 2.5 milliohms

Product Advantages

Compact surface mount package for space-constrained designs

Automatic resetting for easy maintenance-free operation

Highly reliable protection against overcurrent and overtemperature events

Long service life and consistent performance over time

Key Reasons to Choose This Product

Robust overcurrent and overtemperature protection for critical electronic circuits

Compact and space-saving design for efficient PCB layout

Automatic resetting for hassle-free operation and reduced maintenance

Proven reliability and safety certified by leading agencies

Quality and Safety Features

UL and CSA safety approvals

Durable construction for long-term reliability

Consistent performance over the product lifecycle

Compatibility

The MICROSMD350LR-2 is compatible with a wide range of electronic devices and applications that require reliable circuit protection.

Application Areas

Consumer electronics

Industrial equipment

Telecommunications equipment

Automotive electronics

Power supplies

Product Lifecycle

The MICROSMD350LR-2 is currently an obsolete product. Littelfuse may have alternative or equivalent models available. Customers are advised to contact our website's sales team for more information on current product offerings and suitable replacement options.

Parts with Similar Specifications

The three parts on the right have similar specifications to Littelfuse Inc. MICROSMD350LR-2

Product Attribute MICROSMD350LR-2 MICROSMD190LR-2 MICROSMD450LR-C-2 MICROSMDCH010F-02
Part Number MICROSMD350LR-2 MICROSMD190LR-2 MICROSMD450LR-C-2 MICROSMDCH010F-02
Manufacturer Littelfuse Inc. Littelfuse Inc. Littelfuse Inc. Littelfuse Inc.
Time to Trip 10 s 4 s 20 s 100 ms
Series PolySwitch®, microSMD PolySwitch®, LoRho PolySwitch®, LoRho PolySwitch®, microSMD
Type Polymeric Polymeric Polymeric Polymeric
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Lead Spacing - - - -
Size / Dimension 0.127' L x 0.102' W (3.22mm x 2.58mm) 0.127' L x 0.102' W (3.22mm x 2.58mm) 0.127" L x 0.101" W (3.22mm x 2.58mm) 0.127" L x 0.102" W (3.22mm x 2.58mm)
Current - Trip (It) 9 A 4.9 A 9 A 350 mA
Ratings - - - -
Thickness (Max) 0.039' (1.00mm) 0.039' (1.00mm) 0.032" (0.80mm) 0.038" (0.97mm)
Voltage - Max 6V 6V 12V 30V
Approval Agency CSA, UL CSA, UL cURus, TUV -
Operating Temperature - - -20°C ~ 85°C -40°C ~ 125°C
Height - Seated (Max) - - - -
Current - Max 50 A 50 A 10 A 10 A
Current - Hold (Ih) (Max) 3.5 A 1.9 A 4.5 A 100 mA
Resistance - Initial (Ri) (Min) 2.5 mOhms 6 mOhms 2 mOhms 1.2 Ohms
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR)
Package / Case 1210 (3225 Metric) 1210 (3225 Metric), Concave 1210 (3225 Metric), Concave 1210 (3225 Metric), Concave

MICROSMD350LR-2 Datasheet PDF

Download MICROSMD350LR-2 pdf datasheets and Littelfuse Inc. documentation for MICROSMD350LR-2 - Littelfuse Inc..

PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
HTML Datasheet
PolySwitch Low Resistivity Catalog.pdf microSMD350LR-2 Spec.pdf

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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MICROSMD350LR-2 Image

MICROSMD350LR-2

Littelfuse Inc.
32D-MICROSMD350LR-2

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