# Bipolar (BJT) Single Transistor, NPN, 60 V, 1 A, 3 W, SOT-223, Surface Mount

![Product image](https://novapart.co/image/farnell:3943245RL/)

**URL**: https://novapart.co/products/FZT491TA/bipolar-bjt-single-transistor-npn-60-v-1-a-3-w-sot
**SKU**: FZT491TA
**Manufacturer**: DIODES INC.
**Price**: €0.2360
**Stock**: 50+
**Lead Time**: 78 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Msl | MSL 1 - Unlimited |
| Svhc | Lead (27-Jun-2024) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Power Dissipation | 3W |
| Transistor Mounting | Surface Mount |
| Transistor Polarity | NPN |
| Transition Frequency | 150MHz |
| Transistor Case Style | SOT-223 |
| Dc Current Gain Hfe Min | 80hFE |
| Operating Temperature Max | 150°C |
| Continuous Collector Current | 1A |
| Collector Emitter Voltage Max | 60V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3943245RL/)

**A Product Line of Diodes Incorporated** 

**FZT491** 

**60V NPN MEDIUM POWER TRANSISTOR IN SOT223** 

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


## **Features** 

## **Mechanical Data** 

   - Case: SOT223 

- BVCEO > 60V 

   - Case material: molded plastic. “Green” molding compound. 

   - • UL Flammability Rating 94V-0 

- IC = 1A high Continuous  Current 

- Low saturation voltage VCE(sat) < 500mV @ 1A 

- Complementary PNP Type: FZT591 

   - Moisture Sensitivity: Level 1 per J-STD-020 

- **Lead-Free Finish; RoHS Compliant (Notes 1 & 2)** 

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• Terminals: Finish - Matte Tin Plated Leads, Solderable per<br>MIL-STD-202, Method 208<br>• Weight: 0.112 grams (approximate)<br>SOT223  C<br>B<br>|5<br>E<br>Top View<br>Top View  Device Symbol Pin-Out<br>**----- End of picture text -----**<br>


- **Halogen and Antimony Free. “Green” Device (Note 3)** 

- **Qualified to AEC-Q101 Standards for High Reliability** 

## **Applications** 

- Power MOSFET gate driving 

- Low loss power switching 

## **Ordering Information** (Notes 4) 

|**Product**|**Marking**|**Reel size (inches)**|**Tape width (mm)**|**Quantity per reel **|
|---|---|---|---|---|
|FZT491TA|FZT491|7|12|1,000|



- Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 

   2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 

   3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 

   - 4 . For packaging details, go to our website at http://www.diodes.com 

## **Marking Information** 

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FZT<br>491<br>**----- End of picture text -----**<br>


FZT491 = Product Type Marking Code 

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FZT491 Document number: DS33135 Rev. 4 - 2 

December 2012 © Diodes Incorporated 

**A Product Line of Diodes Incorporated** 

**FZT491** | 

**Maximum Ratings** (@TA = +25°C, unless otherwise specified.) 

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|||||
|---|---|---|---|
|Characteristic|Symbol|Value|Unit|
|Collector-Base Voltage|VCBO|80|V|
|Collector-Emitter Voltage|VCEO|60|V|
|Emitter-Base Voltage|VEBO|7|V|
|Continuous Collector Current|IC|1|A|
|Peak Pulse Current|ICM|2|A|
|Base Current|IB|200|mA|

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## **Thermal Characteristics** 

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||||||
|---|---|---|---|---|
|Characteristic|Symbol|Value|Unit|
|(Note|5)|2|W|
|Power Dissipation|PD|
|(Note|6)|3|W|
|(Note 5)|62.5|°C/W|
|Thermal Resistance, Junction to Ambient|(Note 6)|RθJA|41.7|°C/W|
|Thermal Resistance, Junction to Leads (Note 7)|RθJL|19.41|°C/W|
|Operating and Storage Temperature Range|TJ, TSTG|-55 to +150|°C|

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## **ESD Ratings** (Note 8) 

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||||||
|---|---|---|---|---|
|Characteristic|Symbol|Value|Unit|JEDEC Class|
|Electrostatic Discharge - Human Body Model|ESD HBM|≥ 8,000|V|3B|
|Electrostatic Discharge - Machine Model|ESD MM|≥ 400|V|C|

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Notes: 5. For a device surface mounted on 25mm X 25mm FR4 PCB with high coverage of single sided 1 oz copper, in still air conditions; device measured when operating in steady state condition. 

6. Same as note (5), except the device is mounted on 50mm X 50mm single sided 2oz weight copper. 

7. Thermal resistance from junction to solder-point (at the end of the collector lead). 

8. Refer to JEDEC specification JESD22-A114 and JESD22-A115. 

2 of 7 **www.diodes.com** 

FZT491 Document number: DS33135 Rev. 4 - 2 

December 2012 © Diodes Incorporated 

**A Product Line of Diodes Incorporated** 

**FZT491** 

## **Thermal Characteristics and Derating Information** 

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70 50<br>7 LULL<br>60 T amb =25°C T amb =25°C<br>aa 25mm x 25mm  O CCa 40 aal 50mm x 50mm  TSNe<br>50 Tr 2oz FR4 [Cn ae [| 2oz FR4 A<br>ai he ,<br>30<br>40<br>D=0.5 MAP eee il<br>Ae [Ran] a eM lI rT] D=0.5 eae Til<br>30 "TT ae ma lll | Oar<br>20<br>20 Cran D=0.2 ane Single Pulse Hii D=0.2 eA Single Pulse il<br>ama 0 Al D=0.05 il 10 | Bos ath<br>10 St SATIN. D=0.05 Ih<br>ero TT el HA | HH<br>D=0.1<br>D=0.1<br>0 SemaaoTTtT 0 LL eeeeerieLLM | UU LE<br>100µ 1m 10m 100m 1 10 100 1k 100µ 1m 10m 100m 1 10 100 1k<br> Pulse Width (s) Pulse Width (s)<br>Transient Thermal Impedance Transient Thermal Impedance<br>3.0<br>O00 Single Pulse Hl a<br>100 RRASS otTIME ITI TMM TT T amb =25°C coll 2.5 P TN N | | y, 50mm x 50mm  | |<br>2oz FR4<br>HTT TT itt 2.0 4 25mm x 25mm<br> , 50mm x 50mm  Ui NS NX 2oz FR4<br>Ee 2oz FR4 1.5 TT SIN |<br>10<br>UVMSet SearTTI TMTeeeatiiiam ei naeussti meses aTll 1.0 TNTSN<br>25mm x 25mm  0.5<br>rere 2oz FR4 |  COTS<br>1 CTC Wi 0.0 lSTT<br>100µ 1m 10m 100m 1 10 100 1k 0 20 40 60 80 100 120 140 160<br>Pulse Width (s)  Temperature (°C)<br>Pulse Power Dissipation Derating Curve<br> Thermal Resistance (°C/W) Thermal Resistance (°C/W)<br> Max Power Dissipation (W)  Max Power Dissipation (W)<br>**----- End of picture text -----**<br>


3 of 7 **www.diodes.com** 

FZT491 Document number: DS33135 Rev. 4 - 2 

December 2012 © Diodes Incorporated 

**A Product Line of Diodes Incorporated** 

**FZT491** sd 

|**Electrical Characteristics** (@TA= +25°C, unless otherwise specified.)|= +25°C, unless otherwise specified.)|= +25°C, unless otherwise specified.)|= +25°C, unless otherwise specified.)||||
|---|---|---|---|---|---|---|
|**Characteristic**<br>~~—————~~|**Symbol **<br>~~—————~~<br>~~a~~|**Min**<br>~~—————~~|**Typ**<br>~~—————~~|**Max **<br>~~—————~~|**Unit**<br>~~—————~~|**Test Condition **<br>~~—————~~|
|Collector-Base Breakdown Voltage<br>~~—————~~|BVCBO<br>~~—————~~<br>~~a~~|80<br>~~—————~~|−<br>~~—————~~|−<br>~~—————~~|V<br>~~—————~~|IC= 100µA<br>~~—————~~|
|Collector-Emitter Breakdown Voltage(Note 9)<br>~~—————~~|BVCEO<br>~~—————~~<br>~~a~~<br>~~a~~|60<br>~~—————~~<br>~~a~~|−<br>~~—————~~<br>~~a~~|−<br>~~—————~~<br>~~a~~|V<br>~~—————~~|IC= 10mA<br>~~—————~~|
|Emitter-Base Breakdown Voltage<br>~~a~~|BVEBO<br>~~a~~<br>~~a~~<br>~~a~~|7<br>~~a~~<br>~~a~~|8.1<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~|V<br>~~a~~|IE= 100µA<br>~~a~~|
|Collector Cut-off Current<br>~~a~~|ICBO<br>~~a~~<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~<br>~~a~~|<1<br>~~a~~<br>~~a~~<br>~~a~~|100<br>~~a~~<br>~~a~~<br>~~a~~|nA<br>~~a~~|VCB= 60V<br>~~a~~|
|Collector Cut-off Current<br>~~a~~|ICES<br>~~a ~~<br>~~a~~<br>~~a~~|−<br> ~~a~~<br>~~a~~<br>~~a~~|<1<br>~~a~~<br>~~a~~<br>~~a~~|100<br>~~a~~<br>~~a~~<br>~~a~~|nA<br>~~a~~|VCES= 60V<br>~~a~~|
|Emitter Cut-off Current<br>~~a~~|IEBO<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~|<1<br>~~a~~<br>~~a~~|100<br>~~a~~<br>~~a~~|nA<br>~~a~~|VEB= 5.6V<br>~~a~~|
|Collector-Emitter Saturation Voltage (Note 9)<br>~~DL~~|VCE(sat)<br>~~a ~~<br>~~DL~~|−<br>−<br> ~~a~~|100<br>160<br>~~a ~~<br>~~LL~~|250<br>500<br> ~~a~~<br>~~LL~~|mV<br>~~LL~~|IC= 500mA, IB= 50mA<br>IC=1A,IB= 100mA<br>~~LL~~|
|DC Current Gain (Note 9)<br>~~po~~|hFE<br>~~po~~|100<br>100<br>80<br>30<br>~~po~~|140<br>150<br>120<br>40<br>~~po~~|−<br>300<br>−<br>−<br>~~po~~|~~po~~|IC= 1mA, VCE= 5V<br>IC= 500mA, VCE= 5V<br>IC= 1A, VCE= 5V<br>IC= 2A,VCE= 5V<br>~~po~~|
|Base-Emitter Turn-On Voltage(Note 9)<br>~~po~~|VBE(on)<br>~~po~~<br>~~a~~|−<br>~~po~~<br>~~a~~|830<br>~~po~~<br>~~a~~|1000<br>~~po~~<br>~~a~~|mV<br>~~po~~|IC= 1A,VCE= 5V<br>~~po~~|
|Base-Emitter Saturation Voltage(Note 9)<br>~~a~~|VBE(sat)<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~|965<br>~~a~~<br>~~a~~|1100<br>~~a~~<br>~~a~~|mV<br>~~a~~|IC= 1A,IB= 100mA<br>~~a~~|
|Output Capacitance<br>~~a~~|Cobo<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~|−<br>~~a~~<br>~~a~~|10<br>~~a~~<br>~~a~~|pF<br>~~a~~|VCB= 10V,f = 1MHz<br>~~a~~|
|Current Gain-Bandwidth Product<br>~~A~~|fT<br>~~a~~<br>~~A~~|150<br>~~a~~<br>~~A~~|−<br>~~a ~~<br>~~A~~|−<br> ~~a~~<br>~~A~~|MHz<br>~~A~~|VCE= 10V, IC= 50mA<br>f = 100MHz<br>~~A~~|



4 of 7 **www.diodes.com** 

FZT491 Document number: DS33135 Rev. 4 - 2 

December 2012 © Diodes Incorporated 

**A Product Line of Diodes Incorporated** 

**FZT491** 

## **Typical Electrical Characteristics** (@TA = +25°C, unless otherwise specified.) 

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1 0.7<br>Tamb=25°C I /I =10<br>Cet GE | a 0.6 C B Cort Hh<br>I C /I B =100 0.5 150°C<br>Sait aera iy aa ec es |<br>PTT S/n ‘ 0.4 PE 100°C = /, an<br>100m<br>BUIN EE | 0.3 Seesy, 2<br>I /I =50<br>C B 0.2<br>SePt rer A HITHe parT TUCO Eh 25 ° C<br>| NN I /I =10 AUT || 0.1 Peg. -55°C<br>C B<br>10m mal 0.0 ee ill |<br>1m 10m 100m 1 10 10m 100m 1<br>IC   Collector Current (A) IC   Collector Current (A)<br>V  v I V  v I<br>CE(SAT) C CE(SAT) C<br>1.6 150°C V CE =5V 3 00 1.2 I C /I B =10<br>1.4 Soe et HL TEE -55°C TET |<br>CtSa teeSCTT ST | man cegeen eBUf<br>1.2 —=TSN 2 50 1.0 PT) 25°C LUUIINGNYE LEY,<br>100°C<br>1.0 entrT A 200 a ee<br>eeee Neer<br>0.8 crneli 25 ° C ee \ 1 50 0.8 | oN CY |<br>i trae,hhaa eerTae  a<br>0.6 | | |<br>0.4 _Si -55 |, °C —— 1 00 0.6 [a= eeaeoak 100°C rT]<br>oot a “a Fee [TT a<br>0.2 5 0 0.4 150°C<br>Seti fC eS<br>0.0 Pon ertieeectin, 9 0 oleeTS HUI TL<br>1m 10m 100m 1 1m 10m 100m 1<br>IC   Collector Current (A) IC   Collector Current (A)<br>h  v I V  v I<br>FE C BE(SAT) C<br>1.2<br>V =5V<br>CE -55°C<br>1.0 a eee<br>en HL 25 | ° LT C A<br>ee es el<br>0.8<br>eee<br>om a Ao<br>0.6<br>pT T<br>100°C<br>0.4 |<br>pe err | LL |<br>150°C<br>0.2 ELANa TE Efis<br>1m 10m 100m 1<br>IC   Collector Current (A)<br>V  v I<br>BE(ON) C<br>  (V)   (V)<br>CE(SAT) CE(SAT)<br>V V<br>)<br>FE<br>  (V)<br>BE(SAT)<br>V<br>Normalised Gain<br> Typical Gain (h<br> (V)<br>BE(ON)<br>V<br>**----- End of picture text -----**<br>


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FZT491 Document number: DS33135 Rev. 4 - 2 

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A Product Line of<br>Diodes Incorporated<br>FZT491<br>|<br>SOT223<br>Dim  Min  Max  Typ<br>A 1.55 1.65 1.60<br>A1 0.010 0.15 0.05<br>| es b1 2.90 3.10 3.00<br>EEN esee<br>b2 0.60  0.80  0.70<br>ee ee ee<br>C 0.20  0.30  0.25<br>es<br>D 6.45 6.55 6.50<br>b2 ee E 3 ee .45 3.55 3.50<br>er iL es E1 6 ee .90 7.1 ee 0 7.00<br>ee ee<br>+ e | esee e eeee —   ee a —  4.60<br>e1 —  —  2.30<br>ee OO eeee<br>L 0.85  1.05  0.95<br>es ee a<br>A Q 0.84  0.94  0.89<br>All Dimensions in mm<br>___<br>A1 Meat) es<br>**----- End of picture text -----**<br>


## **Package Outline Dimensions** 

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. 

## **Suggested Pad Layout** 

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. 

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X1<br>Y1<br>TL]<br>C1<br>Y2<br>Thy C2 a<br>>! X2 I e > |<br>**----- End of picture text -----**<br>


|**Dimensions**|**Value (in mm)**|
|---|---|
|**X1**|3.3|
|**X2**|1.2|
|**Y1**|1.6|
|**Y2**|1.6|
|**C1 **|6.4|
|**C2 **|2.3|



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FZT491 Document number: DS33135 Rev. 4 - 2 

December 2012 © Diodes Incorporated 

**A Product Line of Diodes Incorporated FZT491 |** 

## **IMPORTANT NOTICE** 

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others.  Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. 

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. 

Products described herein may be covered by one or more United States, international or foreign patents pending.  Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. 

This document is written in English but may be translated into multiple languages for reference.  Only the English version of this document is the final and determinative format released by Diodes Incorporated. 

## **LIFE SUPPORT** 

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: 

- A.   Life support devices or systems are devices or systems which: 

1. are intended to implant into the body, or 

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B.   A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. 

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated.  Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. 

Copyright © 2012, Diodes Incorporated 

**www.diodes.com** 

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FZT491 Document number: DS33135 Rev. 4 - 2 

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## Links

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- [Supplier page](https://es.farnell.com/diodes-inc/fzt491ta/trans-npn-60v-1a-150deg-c-2w/dp/3943245RL)
---

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