# Fuse, Surface Mount, 3.5 A, Time Delay, 250 V, 3812 [10030 Metric], SF-3812TL-TS Series
**URL**: https://novapart.co/products/SF-3812TL350TS/fuse-surface-mount-35-a-time-delay-250-v-3812
**SKU**: SF-3812TL350TS
**Manufacturer**: BOURNS
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || SMD Fuses
**Price**: €0.5520
**Stock**: 1000+
**Lead Time**: 92 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | Lead (04-Feb-2026) |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4723169RL/)
## **Features**
## **Applications**
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Features Applications
n EIA 3812 (10030 metric) footprint n Lighting systems
n Ceramic tube design for time lag fusing n Power adaptors
speed and low power applications n Power supplies
n High interrupting capability up to 50 A @ n AC/DC converters
>< 250 VAC n Telecom equipment system power
5 n UL 248-14, IEC 60127-1 and
y >.
IEC 60127-7 compliant
n RoHS compliant* and halogen free**
SF-3812TL-TS Series – SMD Fuses
BOURNS (i
&
*RoHS COMPLIANT
**HALOGEN FREE
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## ~~**Pre-arcing Time Characteristics for Series**~~
|**Current Rating**|**% of Current Rating**|**Pre-Arcing Time at 25 °C**|**Pre-Arcing Time at 25 °C**|
|---|---|---|---|
|||**Min.**|**Max.**|
|0.5~5 A
(UL)|100 %|4 hours|—|
||250 %|—|120 seconds|
|2 A, 3.5~5 A
(TUV)|210 %|—|1 hour|
||1000 %|—|1 second|
## ~~**Additional Information**~~
Click these links for more information:
PRODUCT TECHNICAL INVENTORY SAMPLES CONTACT SELECTOR LIBRARY
## ~~**Electrical Characteristics**~~
|**Model**|**Rated**
**Current (A)**|**Resistance**
**(Ω) Typ.*****|**Rated**
**Voltage**|**Interrupting**
**Rating**|**Typical**
**I2t (A2s) ******|**Certifications**|**Certifications**|
|---|---|---|---|---|---|---|---|
|||||||**cUL**|**TUV**|
|||||||**E198545**|**R 50421699**|
|SF-3812TL050TS|0.50|0.616|250 VAC|50 A @ 250 VAC|2.88|3||
|SF-3812TL075TS|0.75|0.256|||3.80|3||
|SF-3812TL100TS|1.0|0.176|||9.21|3||
|SF-3812TL150TS|1.5|0.101|||12.92|3||
|SF-3812TL200TS|2.0|0.057|||19.67|3|3|
|SF-3812TL250TS|2.5|0.039|||34.52|3||
|SF-3812TL300TS|3.0|0.029|||52.68|3||
|SF-3812TL350TS|3.5|0.018|||75.49|3|3|
|SF-3812TL400TS|4.0|0.016|||105|3|3|
|SF-3812TL500TS|5.0|0.014|||215|3|3|
- *** Resistance value measured with ≤10 % rated current at 25 °C ambient.
- **** Melting I[2] t calculated at 8 ms pre-arcing time.
## ~~**Environmental Characteristics**~~
## ~~**Packaging**~~
Storage Conditions
|**Reel Dimension**|13-inch Tape and Reel|
|---|---|
|**Specification**|EIA 481-2|
|**Quantity**|2,000 pieces|
## **WARNING**
**Cancer and Reproductive Harm** www.P65Warnings.ca.gov
- RoHS Directive 2015/863, Mar 31, 2015 and Annex.
- ** 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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.
## **SF-3812TL-TS Series – SMD Fuses**
## ~~**Average Pre-Arcing Time vs. Current Curves**~~
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2 A 2.5 A
1.5 A 3 A
1 A 3.5 A
0.75 A 4 A
0.5 A 5 A
1000
100
10
1
0.1
0.01
0.001
0.1 1 10 100 1000
CURRENT (A)
PRE-ARCING TIME (SECONDS)
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## ~~**Product Dimensions**~~
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10.00 ± 0.50 3.20 ± 0.30
(.384 ± .020) (.126 ± .012)
3.5A
TL
1.80 ± 0.30 3.20 ± 0.30
(.071 ± .012) DIMENSIONS: MM (.126 ± .012)
(INCHES)
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## ~~**Recommended Pad Layout**~~
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6.10
(.240)
3.43
(.135)
3.25
(.128) DIMENSIONS: MM
(INCHES)
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## ~~**How to Order**~~
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SF - 3812 TL 100 TS
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SinglFuse™ Product Designator SMD Footprint 3812 = EIA 3812 (10030 metric) Fusing Characteristic TL = Time Lag & Low Power 120 sec. max @ 250 % In Rated Current 050 - 500 (0.5 A ~ 5 A) Structure Type TS = Ceramic Tube
## ~~**Current Rating Thermal Derating Curve**~~
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140
120
100
80
60 25 °C
40
20
0
-60 -40 -20 0 20 40 60 80 100 120 140
AMBIENT TEMPERATURE (°C)
RATED CURRENT PERCENTAGE (%)
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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.
## ~~**Typical Part Marking**~~
Represents total content. Layout may vary.
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1.5A TL
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Rated Current Part Marking
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|**Rated Current**|**Part Marking**|
|---|---|
|||
|0.5 A|500mA TL|
|0.75 A|750mA TL|
|1.0 A|1A TL|
|1.5 A|1.5A TL|
|2.0 A|2A TL|
|2.5 A|2.5A TL|
|3.0 A|3A TL|
|3.5 A|3.5A TL|
|4.0 A|4A TL|
|5.0 A|5A TL|
## **SF-3812TL-TS Series – SMD Fuses**
## ~~**Solder Reflow Recommendations**~~
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Tp
Tc -5 °C
MAX. RAMP UP RATE = 3 °C/s tp
MAX. RAMP DOWN RATE = 6 °C/s
TL
Tsmax PREHEAT AREA tL
Tsmin
ts
25
TIME 25 °C TO PEAK
TIME
TEMPERATURE (°C)
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Profile Feature Pb-Free Assembly
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|**Profile Feature**|**Pb-Free Assembly**|
|---|---|
|||
|Preheat / Soak:
Temperature Min. (Tsmin)
Temperature Max. (Tsmax)
Time (ts) from (Tsminto Tsmax)|150 °C
200 °C
60~120 seconds|
|Ramp Up Rate (TLto Tp)|3 °C / second max.|
|Liquidous Temperature (TL)
Time (tL) maintained above TL|217 °C
60~150 seconds|
|Peak Package Body
Temperature (Tp)|260 °C|
|Time (tp)* within 5 °C of the
specified classification temperature
(Tc)|30 seconds*|
|Ramp Down Rate (Tpto TL)|6 °C / second max.|
|Time 25 °C to Peak Temperature|8 minutes max.|
- Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum.
**Americas:** Tel: +1 951-781-5500 • Email: americus@bourns.com **Mexico:** Tel: +52-614-478-0400 • Email: mexicus@bourns.com **Asia:** Tel: +886-2-2562-4117 • Email: asiacus@bourns.com **EMEA:** Tel: +36 88 885 877 • Email: eurocus@bourns.com **www.bourns.com**
REV. 05/25
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 its affiliates (collectively, “Bourns”).
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 current 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 vary from the data sheet characteristics and parameters due to (i) the combination of the Bourns[®] product with other components in the user’s application, or (ii) the environment of the user application itself. The characteristics and parameters of a Bourns[®] product also can and do vary in different applications and actual performance may vary over time. Users should always verify the actual performance of the Bourns[®] product in their specific devices and applications, and make their own independent judgments regarding the amount of additional test margin to design into their device or application to compensate for differences between laboratory and real world conditions.
Unless Bourns has explicitly designated an individual Bourns[®] product as meeting the requirements of a particular industry standard (e.g., IATF 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 their devices or applications.
Bourns[®] products are not recommended, authorized or intended for use in nuclear, lifesaving, life-critical or life-sustaining applications, nor in any other applications where failure or malfunction may result in personal injury, death, or severe property or environmental damage. Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any Bourns[®] products in such unauthorized applications might not be safe and thus is at the user’s sole risk. Life-critical applications include devices identified by the U.S. Food and Drug Administration as Class III devices and generally equivalent classifications outside of the United States.
Bourns expressly identifies those Bourns[®] standard products that are suitable for use in automotive applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns[®] standard products in an automotive application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk. If Bourns expressly identifies a sub-category of automotive application in the data sheet for its standard products (such as infotainment or lighting), such identification means that Bourns has reviewed its standard product and has determined that if such Bourns[®] standard product is considered for potential use in automotive applications, it should only be used in such sub-category of automotive applications. Any reference to Bourns[®] standard product in the data sheet as compliant with the AEC-Q standard or “automotive grade” does not by itself mean that Bourns has approved such product for use in an automotive application.
Bourns[®] standard products are not tested to comply with United States Federal Aviation Administration standards generally or any other generally equivalent governmental organization standard applicable to products designed or manufactured for use in aircraft or space applications. Bourns expressly identifies Bourns[®] standard products that are suitable for use in aircraft or space applications on such products’ data sheets in the section entitled “Applications.” Unless expressly and specifically approved in writing by two authorized Bourns representatives on a case-by-case basis, use of any other Bourns[®] standard product in an aircraft or space application might not be safe and thus is not recommended, authorized or intended and is at the user’s sole risk.
The use and level of testing applicable to Bourns[®] custom products shall be negotiated on a case-by-case basis by Bourns and the user for which such Bourns[®] custom products are specially designed. Absent a written agreement between Bourns and the user regarding the use and level of such testing, the above provisions applicable to Bourns[®] standard products shall also apply to such Bourns[®] custom products.
Users shall not sell, transfer, export or re-export any Bourns[®] products or technology for use in activities which involve the design, development, production, use or stockpiling of nuclear, chemical or biological weapons or missiles, nor shall they use Bourns[®] products or technology in any facility which engages in activities relating to such devices. The foregoing restrictions apply to all uses and applications that violate national or international prohibitions, including embargos or international 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 prior authorization from Bourns and/or the U.S. Government, be resold, transferred, or re-exported to any party not eligible to receive U.S. commodities, software, and technical data.
To the maximum extent permitted by applicable law, Bourns disclaims (i) any and all liability for special, punitive, consequential, incidental or indirect damages or lost revenues or lost profits, and (ii) any and all implied warranties, including implied warranties of fitness for particular purpose, non-infringement and merchantability.
_For your convenience, copies of this Legal Disclaimer Notice with German, Spanish, Japanese, Traditional Chinese and Simplified Chinese 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_
C1753 12/14/23R
## Links
- [View this product on Novapart](https://novapart.co/products/SF-3812TL350TS/fuse-surface-mount-35-a-time-delay-250-v-3812)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/bourns/sf-3812tl350ts/smd-fuse-time-delay-3-5a-250v/dp/4723169RL)
---
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