# Fuse, Surface Mount, 2 A, Slow Blow, 600 V, 4012, TeleLink 461 Series

![Product image](https://novapart.co/image/farnell:9943374/)

**URL**: https://novapart.co/products/0461002.ER/fuse-surface-mount-2-a-slow-blow-600-v-4012
**SKU**: 0461002.ER
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || SMD Fuses
**Price**: €1.0700
**Stock**: 1000+
**Lead Time**: 71 days (indicative)

## Description

Fuse Current:2A; Product Range:TeleLink Series; Voltage Rating VAC:600VAC; Voltage Rating V DC:-; Blow Characteristic:Slow Blow; Fuse Case Style:SMD; Breaking Capacity Current AC:60A; Breaking Capac

## Specifications

| Parameter | Value |
|---|---|
| Svhc | Lead (25-Jun-2020) |
| Fuse Current | 2A |
| Product Range | TeleLink 461 Series |
| Fuse Case Style | 4012 |
| Voltage Rating Vac | 600V |
| Voltage Rating Vdc | - |
| Blow Characteristic | Slow Blow |
| Breaking Capacity Current Ac | 60A |
| Breaking Capacity Current Dc | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:9943374/)

Fuse **Datasheet** 

**461 Series TeleLink[®] Fuse** Surge Resistant 

## **RoHS** Al |JHFWWGE. 

## **Description** 

The Littelfuse 461 Series TeleLink® Surface Mount, Surge Resistant Fuse, offers over-current protection for a wide range of telecom applications without requiring a series resistor. When used in conjunction with a Littelfuse SIDACtor® Transient Voltage Suppressor (TVS) or a GreentubeTM Gas Plasma Arrestor, this combination provides a compliant solution for standards and recommendations such as GR-1089–Core, TIA968-A, UL/EN/IEC 60950, and ITU K.20 and K.21. The coordination requirement contained in GR-1089–Core, and ITU K.20/21 may require a series of impedance devices. 

## **Features & Benefits** 

## **Additional Information** 

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Resources Accessories Samples<br>**----- End of picture text -----**<br>


## **Agency Approvals** 

|**Agency**<br>W|**Agency File Number**<br>E10480|**Ampere Range**<br>0.5A - 2A|
|---|---|---|
|@.|29862|0.5A - 2A|
|A|J50502555|0.5A - 2A|



- Surface mount surge resistant ■ 2A rating has improved Slo-Blo® fuse temperature rise performance 

- ■ Meet UL 60950 3rd Edition under 2.2A surge current power cross requirements testing when compared with standard alone 1.25A rating 

- Designed to allow compliance ■ Product is Halogen Free with Telcordia GR-1089-CORE and RoHS compliant  and and TIA-968-A (formerly FCC compatible with lead-free Part 68) Surge Specifications solder and higher  temperature profiles when ordered with 

- ■ Provide coordinated protection Standard Silver Plated Brass with Littelfuse SIDACtor® Caps 

- Transient Voltage Suppressor (TVS)or a GreentubeTM Gas ■ UL Recognized to UL/CSA/ Plasma Arrestor, without series NMX 248-1 and UL/CSA/NMX resistors 248-14 

- Designed to serve the ■ Conforms to IEC/EN 60127-1 requirements of a wide range and IEC/EN 60127-7 of telecommunication and networking equipment 

## **Applications** 

## **Electrical Characteristics for Series** 

|**% of Ampere Rating**|||**Opening Time**|
|---|---|---|---|
|100%<br>250%|1 sec., Minimum; 120 secs., Maximum|1 sec., Minimum; 120 secs., Maximum|4 hours, Minimum<br>1 sec., Minimum; 120 secs., Maximum|



## **Maximum Temperature Rise** 

   - Ethernet 10/100/1000BaseT 

- T1/E1/J1 and HDSL2/4 

- SLIC interface portion of Fiber ■ POTS applications such to the Curb (FTTC) and Fiber as modems, answering to the Premises (FTTP) machines, telephones, fax 

- ■ Non-Fiber SLIC interface for machines, and security systems 

- Non-Fiber SLIC interface for Central Office (CO) locations systems and Remote Terminals (RT) ■ ISDN “U” interface 

- xDSL applications such as ■ Baystation T1/E1/J1, T3 (DS3) ADSL, ADSL2+, VDSL, and trunk cards VDSL2+ 

|**Telecom Nano2® Fuse**|**Temperature Reading**|
|---|---|
|04611.25|< 82°C (180°F)|
|0461002.|< 50°C (122°F)|



Higher Currents and PCB layout designs can affect this parameter. Readings are measured at rated current after temperature stabilizes. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/31/21 

**1** 

Fuse **Datasheet** 

**461 Series TeleLink[®] Fuse** Surge Resistant 

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## **Electrical Specifications by Item** 

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Ampere  Max Voltage  Interrupting Nominal Cold  Nominal Melting  Agency Approvals<br>Rating (A) Amp Code Rating (V) Rating [2] Resistance (Ohms) I [2] t (A [2] sec)<br>0.500 .500 600 50A @ 250 VAC  0.560 0.840 [1] x x x<br>1.25 1.25 600 60 A @600 VAC .1040 16.5 [1] x x x<br>2.00 002. 600 100 A @80 VDC .0450 17.5 [1] x x x<br>**----- End of picture text -----**<br>


- 1 I2t is calculated at 10 msecs. or less. I2t at 10 times rated current has a typical value of: 24 A2sec (2.0A), 22 A2sec (1.25A), 1.3 A2sec (0.5A). 

- Typical inductance <40nH up to 500 MHz. 

- Resistance changes 0.5% for every °C. 

- Resistance is measured at 10% rated current. 

- 2 Interrupting Rating may differ based on Agency Approval.  See Agency Approval certificate for more details. 

## **Temperature Re-rating Curve** 

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## **Note:** 

**1.** Re-rating depicted in this curve is in addition to the standard re-rating of 25% for continuous operation. 

## **Average Time Current Curves** 

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100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100 1000<br>CURRENT IN AMPERES<br>.500A 1.25A 2A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


## **GR 1089 Inter-building requirements** 

## **GR 1089 1st level lighting surge inter-building** 

(Equipment under test can not be damaged and must continue to operate properly) 

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Minimum Peak   Minimum Peak   Max. Rise/Min.   Repetitions   Fuse<br>Surge Voltage (V) Current (A) Decay (µs) Each Polarity Choices<br>1 600 100 10/1000 25 1.25, 2.0<br>2 1000 100 10/360 25 1.25, 2.0<br>3 1000 100 10/1000 25 1.25, 2.0<br>4 2500 500 2/10 10 1.25, 2.0<br>5 1000 25 10/360 5 0.5, 1.25, 2.0<br>**----- End of picture text -----**<br>


If sufficient series resistance is used, then the 0.5 fuse may be used in test conditions 1-4. 

## **GR 1089 2nd level lightning surge telecom port** 

(Equipment under test shall not become a fire or electrical safety hazard) 

|**Surge**|**Minimum Peak**<br>**Voltage (V)**|**Minimum Peak**<br>**Current (A)**|**Max. Rise/Min.**<br>**Decay (µs)**|**Repe-titions**<br>**Each Polarity**|**Fuse**<br>**Choices**|
|---|---|---|---|---|---|
|1|5000|500|2/10|1|0.5, 1.25, 2.0|
|Alter-native|5000|500/8=625|8/10|1|0.5, 1.25, 2.0|



The 0.5 fuse will open during these test conditions. The 1.25 & 2.0 will not open thus providing operational compliance. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/31/21 

**2** 

Fuse **Datasheet** 

**461 Series TeleLink[®] Fuse** Surge Resistant 

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**GR 1089 AC power fault 1st level inter-building** (fuse not allowed to open) 

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Test Vrms Short Circuit  Hits Duration Primary  Fuse<br>Current (A) Protector Choices<br>1 50 0.33 1 15 min. removed 1.25, 2.0<br>2 100 0.17 1 15 min. removed 1.25, 2.0<br>3 200,400, 600 1 60 1 sec. removed 1.25, 2.0<br>4 1000 1 60 1 sec. operative 1.25, 2.0<br>5 Diagram Diagram 60 5 secs. removed 1.25, 2.0<br>6 600 0.5 1 30 secs. removed 1.25, 2.0<br>7 440 2.2 5 2 secs. removed 1.25, 2.0<br>8 600 3 1 1.1 secs. removed 1.25, 2.0<br>9 1000 5 1 0.4 sec. in place 1.25, 2.0<br>**----- End of picture text -----**<br>


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**GR 1089 AC power fault 2nd level** (fuse can open but must open in a safe and controlled manner) 

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Test  ShortCircuit<br>Vrms Duration Fuse<br>Circuit Current(A)<br>1 120,277 25 15 min. 0.5, 1.25, 2.0<br>2 600 60 5 secs. 0.5, 1.25, 2.0<br>3 600 7 5 secs. 0.5, 1.25, 2.0<br>4 100-600 2.2 15 min.. 0.5, 1.25, 2.0<br>5 Diagram Diagram 15 min. 0.5, 1.25, 2.0<br>**----- End of picture text -----**<br>


Fuse must open before wiring simulator fuse (MDL 2.0). 

**TIA –968-A (formerly FCC Part 68) Surge Waveforms** (fuse can not open during type B events) 

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Surge Voltage (V) Waveform (µs) Current (A) Repetitions Recommended Fuse<br>Metallic A 800 10×560 100 1 ea. polarity 1.25<br>Longitudinal A 1500 10×160 200 1 ea. polarity 1.25<br>Metallic B 1000 9×720 25 1 ea. polarity 1.25<br>Longitudinal B 1500 9×720 37.5 1 ea. polarity 1.25<br>**----- End of picture text -----**<br>


For the type A events the 0.5 fuse will open, providing non-operational compliance. The 1.25 & 2.0 will not open, providing for operational compliance with TIA-968-A type A surge events. 

## **UL 60950 requirements** 

## **Dimensions** 

**UL60950 (EN 60950) (formerly UL 1950) Power Cross** 

(L = longitudinal, M = metallic) 

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Test Number Voltage (V) Current (A) Time Fuse Choices<br>L1 600 40 1.5 secs. 0.5, 1.25, 2.0<br>L2 600 7 5 secs. 0.5, 1.25, 2.0<br>L3 600 2.2 30 min. 0.5, 1.25, 2.0<br>L4 200 2.2 30 min. 0.5, 1.25, 2.0<br>L5 120 25 30 min. 0.5, 1.25, 2.0<br>M1 600 40 1.5 secs. 0.5, 1.25, 2.0<br>M2 600 7 5 secs. 0.5, 1.25, 2.0<br>M3 600 2.2 30 min. 0.5, 1.25, 2.0<br>M4 600 2.2 30 min. 0.5, 1.25, 2.0<br>**----- End of picture text -----**<br>


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3.25<br>10.10 (.128")<br>(.397")<br>6.10<br>3.12 (.240") 3.43<br>L [F] 1.25A  [T]<br>(.123") (.135")<br>12.6<br>3.12<br>(.496")<br>(.123")<br>1.70 typ<br>Recommended Pad Layout<br>(.067")<br>**----- End of picture text -----**<br>


Selection of test number depends on current limiting F fire enclosure/spacing of end product ■ 26 AWG line cord removes L1/M1 test requirement 

■ L5 conducted only if product does not pass section 6.1.2 ■ L2,M2,L3,M3,L4,M4 conducted if not in a fire enclosure Fuse must open before the wiring simulator fuse (MDL 2.0). 

**UL60950 (EN 60950) (formerly UL 1950) Impulse Test and Steady-State Electric Strength Test** 

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Test Voltage (V) Current (A) Waveform Repetitions Fuse Choices<br>Impulse<br>For handheld units 2500 62.5 10×700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0<br>Non handheld 1500 37.5 10×700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0<br>Steady-State<br>For handheld units 1500 60Hz 0.5, 1.25, 2.0<br>Non handheld 1000 60Hz 0.5, 1.25, 2.0<br>**----- End of picture text -----**<br>


© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/31/21 

**3** 

Fuse **Datasheet** 

**461 Series TeleLink[®] Fuse** Surge Resistant 

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## **Soldering Parameters** 

|**Refow Condition**|**Refow Condition**|Pb – free<br>assembly|
|---|---|---|
|**Pre Heat**|**- Temperature Min (Ts(min))**|150°C|
||**- Temperature Max (Ts(max))**|200°C|
||**- Time (Min to Max) (ts)**|60 – 180 seconds|
|**Average Ramp-up Rate (Liquidus Temp (TL) to peak)**||5°C/second max.|
|**TS(max) to TL -**|**Ramp-up Rate**|5°C/second max.|
|**Refow**|**- Temperature (TL) (Liquidus)**|217°C|
||**- Temperature (tL)**|60 – 150 seconds|
|**Peak Temperature (TP)**||260+0/–5°C|
|**Time within 5°C of actual peak Temperature (tp)**||20 – 40 seconds|
|**Ramp-down Rate**||6°C/second max.|
|**Time 25°C to peak Temperature (TP)**||8 minutes max.|
|**Do not exceed**||260°C|



## **Product Characteristics** 

|**Materials**|**Body:**Ceramic<br>**Terminations:**Silver-plated Caps|
|---|---|
|**Product Marking**|Brand Logo, Ampere Rating, T|
|**Operating Temperature**|-55°C to 125°C|
|**Moisture Sensitivity Level**|Level 1, J-STD-020|
|**Solderability**|IEC 60127-4 (215°C immersion, 3 seconds)|
|**Resistance to Dissolution**<br>**of Metallization**|IPC / EIA J-STD-002-Test D 260°C for 120<br>seconds|
|**Thermal Shock**|MIL-STD-202, Method 107, Test Condition B,<br>-55°C to +125°C,30 minutes @ each extreme|
|**Mechanical Shock**|MIL-STD-202, Method 213, Test Condition A -<br>Half Sine,50 G's,11 msecs. duration|
|**High Frequency Vibration**|MIL-STD-202, Method 204, Test Condition D|
|**Moisture Resistance**|MIL-STD-202, Method 106, 50 cycles|
|**Terminal Strength**|Board defection per EIA / IS-722, 1mm<br>defection for 1 minute|
|**Terminal Attachment**|MIL-STD-202, Method 211, Test Condition A, 5<br>lbs applied to end caps|



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t P<br>T P<br>Critical Zone<br>Ramp-up TL to TP<br>T S(max) T L t L<br>Ramp-down<br>Preheat<br>T S(min)<br>t S<br>25<br>time to peak temperature Time<br>(t 25ºC to peak)<br>Temperature<br>**----- End of picture text -----**<br>


## **Part Numbering System** 

## **0461 1.25  E   R** 

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Series<br>**----- End of picture text -----**<br>


**Amp Code[*]** Refer to Electrical Characteristics table **Quantity code** E = 2500 pcs **Packaging code** R = Tape and Reel ***Example:** 2 amp product is 0461002.ER (1.25 amp product shown above) 

## **Packaging** 

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Packaging  Packaging  Quantity & Packaging<br>Option Specification Quantity Code<br>24mm Tape  EIA RS-481-2<br>2500 ER<br>and Reel (IEC 60286-3)<br>**----- End of picture text -----**<br>


**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. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/31/21 

**4** 



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