![SF-3812TL050T-2 — Fuse, Surface Mount, 500 mA, Slow Blow, 250 V, 3812 [10030 Metric], SinglFuse SF-3812TL-T](/media/5/2/2/76B6FA5DD0E10225.webp)
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SF-3812TL050T-2
Fuse, Surface Mount, 500 mA, Slow Blow, 250 V, 3812 [10030 Metric], SinglFuse SF-3812TL-T
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: BOURNS
- Product type: SMD Fuses
- Fuse Current:500mA; Product Range:SinglFuse SF-3812TL-T Series; Voltage Rating VAC:250V; Voltage Rating V DC:-; Blow Characteristic:Time Delay; ; Available until stocks are exhausted
- SVHC: Lead (23-Jan-2024)
- Fuse Current: 500mA
- Product Range: SinglFuse SF-3812TL-T
- Fuse Case Style: 3812 [10030 Metric]
- Voltage Rating VAC: 250V
- Voltage Rating VDC: -
- Blow Characteristic: Slow Blow
- Breaking Capacity Current AC: 50A
- Breaking Capacity Current DC: -
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 1.43 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
## **SinglFuse[™] SF-3812TL-T Series Features** ew 7 A n Single blow fuse for overcurrent n Meets IEC 60127-1 and IEC 60127-7 protection requirements n EIA 3812 (10030 metric) footprint n Surface mount packaging n Ceramic tube design for time lag fusing for automated assembly speed and low power applications n RoHS compliant* and halogen free** n UL 248-14 listed ## **SF-3812TL-T Series – Time Lag & Low Power SMD Fuses** ## ~~**Electrical Characteristics**~~ |**Model**<br>~~a~~<br>~~ee~~<br>~~ee~~|**Rated Current**<br>**(A)**<br>~~ee~~<br>~~ee~~|**Fusing**<br>**Time**<br>~~ee~~|**Resistance**<br>**(Ω) Typ.*****<br>~~e~~<br>~~|~~|**Rated**<br>**Voltage**<br>~~ee~~|**Interrupting**<br>**Rating**|**Typical**<br>**I2t (A2s) ******<br>~~eee~~<br>~~ee~~|**Certifications**<br>~~eee~~|**Certifications**<br>~~eee~~| |---|---|---|---|---|---|---|---|---| ||||||||**Certifications**<br>**UL**<br>~~eee~~<br>~~ee~~<br>~~**e**e~~|**Certifications**<br>**TUV**<br>~~eee~~<br>~~ee~~<br>~~eee~~| |SF-3812TL050T-2<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.5<br>~~ee~~<br>~~ee~~<br>~~ee~~|Open within<br>120 sec.<br>at 250 %<br>rated current<br>~~ee ~~<br>~~|~~<br>~~Se~~<br>~~Se~~<br>~~Se~~|0.5479<br> ~~e~~<br>~~|~~<br>~~|~~|250<br>VAC<br>~~ee~~|50 A @<br>250 VAC|1.963<br>~~eee~~<br>~~ee~~<br>~~e~~|•<br>~~eee~~<br>~~ee~~<br>~~**e**e~~<br>~~e~~~~**e**e~~|_pending_<br>~~eee~~<br>~~ee~~<br>~~eee~~<br>~~ee~~| |SF-3812TL075T-2<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.75<br>~~ee~~<br>~~ee~~<br>~~ee~~||0.26<br>~~|~~<br>~~|~~<br>~~|~~|||3.375<br>~~ee~~<br>~~e~~<br>~~e~~|•<br>~~ee~~<br>~~**e**e~~<br>~~e~~~~**e**e~~<br>~~e~~~~**e**ee~~|_pending_<br>~~ee~~<br>~~eee~~<br>~~ee~~<br>~~eee~~| |SF-3812TL100T-2<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|1<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>||0.18<br>~~|~~<br>~~|~~<br>~~|~~|||11.22<br>~~e~~<br>~~e~~<br>~~e~~|•<br>~~**e**e ~~<br>~~e~~~~**e**e~~<br>~~e~~~~**e**ee~~<br>~~eee~~|•<br> ~~eee~~<br>~~ee~~<br>~~eee~~<br>~~eee~~| |SF-3812TL150T-2<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|1.5<br>~~ee~~<br>~~ee~~<br>~~e~~~~**ee**~~||0.1027<br>~~|~~<br>~~|~~<br>~~Se~~|||14.85<br><br>~~e~~<br>~~e~~<br>~~**e**e~~|•<br>~~**e**e ~~<br>~~e~~~~**e**ee~~<br>~~eee~~<br>~~**e**ee~~|•<br> ~~ee~~<br>~~eee~~<br>~~eee~~<br>~~ee~~| |SF-3812TL200T-2<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|2<br>~~ee~~<br>~~e~~~~**ee**~~<br>||0.0504<br>~~|~~<br>~~Se~~<br>~~|~~|||19.84<br><br>~~e~~<br>~~**e**e~~|•<br>~~**e**ee ~~<br>~~eee~~<br>~~**e**ee~~<br>~~ee~~|•<br> ~~eee~~<br>~~eee~~<br>~~ee~~<br>~~eee~~| |SF-3812TL250T-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|2.5<br> ~~e~~~~**ee**~~<br>~~e~~~~**ee**~~||0.037<br>~~Se~~<br>~~|~~<br>~~Se~~|||20.5<br><br>~~**e**e~~<br>~~**e**e~~|•<br>~~ee ~~<br>~~**e**ee~~<br>~~ee~~<br>~~**e**ee~~|•<br> ~~eee~~<br>~~ee~~<br>~~eee~~<br>~~ee~~| |SF-3812TL300T-2<br> <br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|3<br> ~~e~~~~**ee**~~<br>~~e~~~~**ee**~~<br>||0.028<br>~~Se~~<br>~~|~~<br>~~Se~~<br>~~|~~|||54<br>~~**e**e ~~<br>~~**e**e~~|•<br> ~~**e**ee~~<br>~~ee~~<br>~~**e**ee~~<br>~~ee~~|•<br>~~ee~~<br>~~eee~~<br>~~ee~~<br>~~eee~~| |SF-3812TL350T-2<br>~~ee ~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|3.5<br> ~~e~~~~**ee**~~<br>~~e~~~~**ee**~~||0.0199<br>~~Se~~<br>~~|~~<br>~~Se~~|||57.82<br>~~**e**e~~<br>~~**e**e~~|•<br>~~ee ~~<br>~~**e**ee~~<br>~~ee~~<br>~~**e**e~~|•<br> ~~eee~~<br>~~ee~~<br>~~eee~~<br>~~e~~~~**e**~~| |SF-3812TL400T-2<br> <br>~~ee~~<br>~~ee~~<br>~~ee~~|4<br> ~~e~~~~**ee**~~<br>~~e~~~~**ee**~~||0.0158<br>~~Se~~<br>~~|~~<br>~~Se~~<br>~~|~~|||125.6<br>~~**e**e ~~<br>~~**e**e~~|•<br> ~~**e**ee~~<br>~~ee~~<br>~~**e**e~~<br>~~ee~~|•<br>~~ee~~<br>~~eee~~<br>~~e~~~~**e**~~<br>~~e~~| |SF-3812TL500T-2<br>~~ee ~~<br>~~ee~~|5<br> ~~e~~~~**ee**~~||0.012<br>~~Se~~<br>~~|~~|||185<br>~~**e**e~~|•<br>~~ee ~~<br>~~**e**e~~<br>~~ee~~|•<br> ~~eee~~<br>~~e~~~~**e**~~<br>~~e~~| *** Resistance value measured with ≤10 % rated current at 25 °C ambient. Tolerance ±30 %. **** Melting I[2] t calculated at 10 times rated current. ## ~~**Reliability Testing**~~ |**No.**|**Test**|**Test Condition**|**Requirement**|**Test Reference**| |---|---|---|---|---| |1|Solderability|Temperature setup: 235 ±5 °C<br>Time setup: 10 ±1 sec.|After test terminal electrode wetting<br>area must begreater than 95 %|IEC 60068-2-58| |2|Resistance to<br>solderingheat|Temperature setup: 235 ±5 °C<br>Time setup: 30 ± 5 sec.|DCR change ≤ ±15 %|IEC 60068-2-58| |3|Thermal shock|Temperature setup:<br>25 °C ~ -65 °C ~ 25 °C ~ 125 °C<br>Time setup: -65 °C (30 min)<br>~ 25 °C (5 min) ~ 125 °C (30 min)<br>~ 25 °C (5 min), 5 cycles|DCR change ≤ ±15 %<br>No mechanical damage|MIL-STD-202G<br>Method 107G<br>Test Condition B| |4|Humidity unload|Heat (85 ±0.5 °C)<br>High Humidity (85 ±1 % RH)<br>240 hours|DCR change ≤ ±15 %<br>No mechanical damage|MIL-STD-202G<br>Method 103B<br>Test Condition A| |5|Salt spray|Salt spray concentration: 5 ±1 %<br>Test liquid temperature: 35 ±0.5 °C<br>96 hours|DCR change ≤ ±15 %<br>No mechanical damage|MIL-STD-202G<br>Method 101E<br>Test Condition A| |6|Bending|The board shall be bent by 1 mm<br>at a rate of 1 mm/sec.|DCR change ≤ ±15 %|IEC 60127-4| |7|Vibration|Frequency setup: 10 ~ 55 ~ 10 Hz<br>Time setup: 1 Minute/cycle<br>(X-Y-Z, 120 cycles, 6 hours)|DCR change ≤ ±15 %<br>No mechanical damage|MIL-STD-202G<br>Method 201A| **WARNING Cancer and Reproductive Harm -** www.P65Warnings.ca.gov > * RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. ** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less. “SinglFuse” is a trademark of Bourns, Inc. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. ## **SinglFuse[™] SF-3812TL-T Series Applications** n Lighting systems - n Power adaptors - n Power supplies - n AC/DC converters n Telecom equipment system power ## **SF-3812TL-T Series – Time Lag & Low Power SMD Fuses** ## ~~**Environmental Characteristics**~~ Operating Temperature ................................................................................. -55 °C to +125 °C Storage Conditions Temperature ............................................................................................. +15 °C to +30 °C Humidity.......................................................................................................... 20 % to 70 % Shelf Life...........................................................................2 years from manufacturing date Moisture Sensitivity Level ........................................................................................................1 ESD Classification (HBM)..............................................................................................Class 6 ## ~~**Typical Part Marking**~~ Represents total content. Layout may vary. ## ~~**Agency Recognition**~~ **==> picture [155 x 107] intentionally omitted <==** **----- Start of picture text -----**<br> UL File Number ............................E198545<br>TUV File Number .....................R 50421699<br>Construction<br>END CAP<br>(GOLD-PLATED<br>BRASS)<br>CERAMIC TUBE<br>i3.5A<br>**----- End of picture text -----**<br> **==> picture [122 x 25] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging Quantity<br>2,500 pieces per 13-inch reel<br>**----- End of picture text -----**<br> **==> picture [442 x 323] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging Quantity<br>i3.5 A<br>2,500 pieces per 13-inch reel<br>-<br>How to Order<br>Rated Current Part Marking<br>SF - 3812 TL 050 T - 2<br>0.50 A i 0.5 A<br>0.75 A i 0.75 A SinglFuse™<br>Product Designator<br>1.00 A i 1 A<br>SMD Footprint<br>1.50 A i 1.5 A 3812 = EIA 3812<br>2.00 A i 2 A (10030 metric)<br>2.50 A i 2.5 A Fuse Blow Type<br>TL = Time Lag & Low Power<br>3.00 A i 3 A<br>Rated Current<br>3.50 A i 3.5 A 050 - 500 (0.50 A ~ 5.00 A)<br>4.00 A i 4 A Structure Type<br>T = Ceramic Tube<br>5.00 A i 5 A<br>Packaging Type<br>- 2 = Tape & Reel<br>Recommended Pad Layout<br>6.10<br>10.10 ± 0.40 3.10 ± 0.20<br>(.240)<br>(.398 ± .016) (.122 ± .008)<br>i3.5 A 3.43<br>(.135)<br>bis<br>2.65 ± 0.20 |<br>1.75 ± 0.20 (.104 ± .008) 3.10 ± 0.20<br>(.069 ± .008) (.122 ± .008) a 3.25<br>(.128)<br>MM MM<br>DIMENSIONS: DIMENSIONS:<br>(INCHES) (INCHES)<br>**----- End of picture text -----**<br> ## ~~**Product Dimensions**~~ Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. > The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at ~~:~~ www.bourns.com/docs/legal/disclaimer.pdf. ## **SF-3812TL-T Series – Time Lag & Low Power SMD Fuses** ## ~~**Current Rating Thermal Derating Curve**~~ **==> picture [321 x 434] intentionally omitted <==** **----- Start of picture text -----**<br> 120<br>100<br>80<br>60<br>40<br>25 °C<br>20<br>0<br>-60 -40 -20 0 20 40 60 80 100 120 140<br>AMBIENT TEMPERATURE (°C)<br>100,000<br>10,000<br>1,000<br>100<br>10 % 100 %<br>PULSE I [2] t / AVERAGE MELTING I [2] t<br>DERATING (%)<br>NUMBER OF PULSES<br>**----- End of picture text -----**<br> ## ~~**Pulse Cycle Withstand Capability**~~ Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. ## **SF-3812TL-T Series – Time Lag & Low Power SMD Fuses** ## ~~**Solder Refow Recommendations**~~ **==> picture [268 x 463] intentionally omitted <==** **----- Start of picture text -----**<br> tp<br>TP<br>RAMP-UP CRITICAL ZONE<br>TL TO TP<br>TL<br>t L<br>TS MAX.<br>RAMP-DOWN<br>TS MIN.<br>ts<br>PREHEAT<br>25 °C<br>t 25 °C TO PEAK<br>Time<br>Solder Wave Recommendations<br>Peak Temperature (Dwell Time)<br>300<br>280<br>260<br>240<br>220<br>200<br>180<br>160<br>140<br>120<br>100<br>80<br>60<br>40<br>20<br>0<br>20 40 60 80 100 120 140 160 180 200 220 240<br>PREHEAT TIME COOLING TIME<br>Time (Sec.)<br>Temperature<br>Temperature (°C)<br>**----- End of picture text -----**<br> |**Profle Feature**|**Pb-Free Assembly**| |---|---| |Preheat / Soak:<br>Temperature Min. (Tsmin)<br>Temperature Max. (Tsmax)<br>Time (ts) from (Tsminto Tsmax)|150 °C<br>200 °C<br>60~180 seconds| |Ramp Up Rate (TLto Tp)|3 °C / second max.| |Ramp Up Rate (Tsmaxto TL)|5 °C / second max.| |Liquidous Temperature (TL)<br>Time (tL) maintained above TL|217 °C<br>60~90 seconds| |Peak Package Body<br>Temperature (Tp)|235 °C ± 5 °C| |Time within 5 °C of actual peak<br>temperature (Tp)|20~30 seconds*| |Ramp Down Rate (Tpto TL)|6 °C / second max.| |Time 25 °C to Peak Temperature|8 minutes max.| |Do not exceed|240 °C| * Tolerance for peak profile temperature (Tp ) is defined as a supplier minimum and a user maximum. |**Profle Feature**|**Pb-Free Assembly**| |---|---| |Preheat:<br>Temperature Max. (Tsmax)<br>Time (Min. to Max.)|150 °C<br>60~90 seconds| |Solder Pot Temperature|260 °C max.| |Solder Dwell Time|2~3 seconds| Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. ## **SF-3812TL-T Series – Time Lag & Low Power SMD Fuses3312 - 2 mm SMD Trimming Potentiometer** **==> picture [526 x 358] intentionally omitted <==** **----- Start of picture text -----**<br> Average Pre-Arcing Time vs. Current Curves Average I [2] t vs. t Curves<br>2 A 2.5 A<br>1.5 A 3 A<br>1 A 3.5 A<br>0.75 A 4 A<br>0.5 A 5 A<br>100000 1000000<br>0.5 A<br>0.75 A<br>10000<br>100000 1 A<br>1.5 A<br>2 A<br>1000 2.5 A<br>10000 3 A<br>3.5 A<br>100 4 A<br>5 A<br>1000<br>10<br>100<br>1<br>10<br>0.1<br>0.01 1<br>0.1 1 10 100 0.01 0.1 1 10 100 1000 10000 100000<br>TIME (SECONDS)<br>CURRENT (A)<br>s)<br>2<br>t (A<br>2I<br>PRE-ARCING TIME (SECONDS)<br>**----- End of picture text -----**<br> Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. **==> picture [504 x 21] intentionally omitted <==** **----- Start of picture text -----**<br> SF-3812TL-T Series – Time Lag & Low Power SMD Fuses<br>**----- End of picture text -----**<br> **==> picture [516 x 400] intentionally omitted <==** **----- Start of picture text -----**<br> Packaging Specifcations<br>330.00 ± 1.50<br>(12.992 ± .059)<br>DIA.<br>100.00 ± 1.50<br>(3.937 ± .059)<br>30.00 ± 1.00<br>(1.182 ± .039)<br>1.75 ± 0.10 SECTION B-B<br>1.50 ± 0.10 4.00 ± 0.10 (.069 ± .004)<br>(.059 ± .004) [DIA.] (.157 ± .004) 0.30 ± 0.05<br>(.012 ± .002)<br>B<br>11.50 ± 0.10<br>1.50 ± 0.10 (.453 ± .004) SECTION A-A<br>(.059 ± .004)<br>10.40 ± 0.10<br>(.409 ± .004)<br>A A<br>3.40 ± 0.10<br>24.00 ± 0.30 (.134 ± .004)<br>(.945 ± .012)<br>B 3.40 ± 0.10<br>(.134 ± .004)<br>8.00 ± 0.10 2.00 ± 0.10<br>(.315 ± .004) (.079 ± .004)<br>MM<br>DIMENSIONS:<br>(INCHES)<br>**----- End of picture text -----**<br> Tel: +886-2 2562-4117 • Email: asiacus@bourns.com **Asia-Pacific: EMEA:** Tel: +36 88 885 877 • Email: eurocus@bourns.com **The Americas:** Tel: +1-951 781-5500 • Email: americus@bourns.com **www.bourns.com** 02/19 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. ## **Legal Disclaimer Notice** This legal disclaimer applies to purchasers and users of Bourns[®] products manufactured by or on behalf of Bourns, Inc. and Unless otherwise expressly indicated in writing, Bourns[®] products and data sheets relating thereto are subject to change without notice. Users should check for and obtain the latest relevant information and verify that such information is and complete before placing orders for Bourns[®] products. The characteristics and parameters of a Bourns[®] product set forth in its data sheet are based on laboratory conditions, and statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical requirements in generic applications. The characteristics and parameters of a Bourns[®] product in a user application may ® product with other components ® the actual performance of the Bourns[®] Unless Bourns has explicitly designated an individual Bourns ® product as meeting the requirements of a particular industry standard (e.g., ISO/TS 16949) or a particular qualification (e.g., UL listed or recognized), Bourns is not responsible for any failure of an individual Bourns ® product to meet the requirements of such industry standard or particular qualification. Users of Bourns[®] products are responsible for ensuring compliance with safety-related requirements and standards applicable to Bourns[®] on a case-by-case basis, use of any Bourns[®] **==> picture [5 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> ®<br>**----- End of picture text -----**<br> **==> picture [6 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> ®<br>**----- End of picture text -----**<br> **==> picture [5 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> ®<br>**----- End of picture text -----**<br> - ® Bourns[®] ® standard products that are suitable for use in aircraft “Applications.” Unless expressly and specifically ® standard the user’s sole risk. and the user for which such Bourns[®] custom and the user regarding the use and level of also apply to such Bourns[®] custom products. ® custom products shall be negotiated on a case-by-case basis by Bourns are specially designed. Absent a written agreement between Bourns testing, the above provisions applicable to Bourns ® standard products shall Users shall not sell, transfer, export or re-export any Bourns[®] Bourns[®] regulations. Further, Bourns ® products and Bourns technology and technical data may not under any circumstance be exported or re-exported to countries subject to international sanctions or embargoes. Bourns[®] products may not, without _bilingual versions are available at: Web Page: http://www.bourns.com/legal/disclaimers-terms-and-policies PDF: http://www.bourns.com/docs/Legal/disclaimer.pdf_
Updated at June 9, 2026
Bourns, Inc. is a globally recognized manufacturer of high-reliability electronic components, headquartered in Riverside, California. Renowned for its engineering excellence, the company delivers critical solutions across a diverse range of demanding markets, including automotive, industrial, consumer electronics, telecommunications, and medical equipment. The Bourns product portfolio is anchored by an industry-leading selection of passive components and circuit protection devices. The brand is particularly dominant in magnetic components, offering thousands of high-performance power inductors, alongside specialized RF and toroidal inductors engineered for optimized power management and signal integrity. Equally prominent is their comprehensive suite of circuit protection solutions. This robust lineup features a vast array of standard and resettable fuses, transient voltage suppressors (including TVS varistors and diodes), and gas discharge tubes (GDTs) designed to rigorously safeguard sensitive electronics against overvoltage and overcurrent faults. Beyond its core passives and protection technologies, Bourns manufactures highly effective EMC and RFI suppression components, such as common mode chokes and power line filters. The company's offering also extends into discrete semiconductors and power management, including Schottky diodes, fast recovery rectifiers, bridge rectifiers, and board-level transformers. This expansive breadth of quality components provides design engineers with a trusted foundation for developing resilient, efficient, and long-lasting electronic systems.
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