UC3843NAlternatives & Equivalent Parts
About UC3843N
UC3843N is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Need pricing on these alternatives?
Get one quote covering all 12 alternatives for UC3843N — response within 24 hours.
Specification Comparison
| Parameter | UC3843NSource | UC3843D | UC2844BN | UC3844BN | UC3842BN | UC3843AN | 8-215079-6 | UC3842N | UC3845N | UC3844AN | UC3842J | UC3842AN | UC3845AN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | STMicroelectronics | STMicroelectronics | STMicroelectronics | Texas Instruments | TE Connectivity | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Dual-In-Line Packages | Small Outline Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Other | — | Dual-In-Line Packages | Dual-In-Line Packages | Ceramic Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages |
| Pin Count | 8 | 14 | 8 | 8 | 8 | 8 | 16 | — | 8 | 8 | 8 | 8 | 8 |
| Temperature Range | ~ 70.0°C | ~ 70.0°C | -25.0°C ~ 85.0°C | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | -40.0°C ~ 105.0°C | — | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C |
| Price | $0.4260 | $0.3650 | $0.4492 | $0.2472 | $0.2268 | $0.3403 | $1.0848 | $0.5278 | $0.3232 | $0.4160 | $7.6000 | $0.3232 | $0.7181 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | — | NOT RECOMMENDED | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | |||||||||||||
| Pbfree Code | Yes | Yes | — | — | — | Yes | Yes | — | Yes | Yes | Yes | Yes | Yes |
| YTEOL | 15 | 15 | 6 | 6 | 6 | 15 | 9.15 | — | 15 | 15 | 15 | 15 | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | — | — | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | — | — | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | — | — | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION |
| Input Voltage-Max | 28 V | 28 V | 30 V | 30 V | 30 V | 28 V | — | — | 28 V | 28 V | 28 V | 28 V | 28 V |
| Input Voltage-Min | 8.2 V | 8.2 V | 11 V | 11.5 V | 11.5 V | 8.2 V | — | — | 8.2 V | 11.5 V | 11.5 V | 11.5 V | 8.2 V |
| Input Voltage-Nom | 15 V | 15 V | 15 V | 15 V | 15 V | 15 V | — | — | 15 V | 15 V | 15 V | 15 V | 15 V |
| JESD-30 Code | R-PDIP-T8 | R-PDSO-G14 | R-PDIP-T8 | R-PDIP-T8 | R-PDIP-T8 | R-PDIP-T8 | — | — | R-PDIP-T8 | R-PDIP-T8 | R-GDIP-T8 | R-PDIP-T8 | R-PDIP-T8 |
| JESD-609 Code | e4 | e4 | e3 | e4 | e3 | e4 | — | — | e4 | e4 | e0 | e4 | e4 |
| Number of Functions | 1 | 1 | 1 | 1 | 1 | 1 | — | — | 1 | 1 | 1 | 1 | 1 |
| Output Current-Max | 1 A | 1 A | 1 A | 1 A | 1 A | 1 A | — | — | 1 A | 1 A | 1 A | 1 A | 1 A |
| Output Voltage-Nom | 5 V | 2.5 V | — | — | — | 5 V | — | — | 5 V | 5 V | 5 V | 5 V | 5 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | — | PLASTIC/EPOXY | PLASTIC/EPOXY | CERAMIC, GLASS-SEALED | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 | SOP14,.25 | DIP8,.3 | DIP8,.3 | DIP8,.3 | DIP8,.3 | — | — | DIP8,.3 | DIP8,.3 | DIP8,.3 | DIP8,.3 | DIP8,.3 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | — | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE | IN-LINE | IN-LINE | IN-LINE | IN-LINE | — | — | IN-LINE | IN-LINE | IN-LINE | IN-LINE | IN-LINE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | — | — | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Supply Current-Max (Isup) | 25 mA | 25 mA | — | — | — | 25 mA | — | — | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Supply Voltage-Max (Vsup) | 28 V | 28 V | — | — | — | 28 V | — | — | 28 V | 28 V | 28 V | 28 V | 28 V |
| Supply Voltage-Min (Vsup) | 8.4 V | 8.4 V | — | — | — | 8.4 V | — | — | 8.4 V | 16 V | 16 V | 16 V | 8.4 V |
| Surface Mount | NO | YES | NO | NO | NO | NO | — | — | NO | NO | NO | NO | NO |
| Switcher Configuration | BUCK-BOOST | BUCK-BOOST | SINGLE | SINGLE | SINGLE | BUCK-BOOST | — | — | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST |
| Switching Frequency-Max | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | — | — | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz |
| Technology | BICMOS | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | — | — | BICMOS | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR |
| Temperature Grade | COMMERCIAL | COMMERCIAL | COMMERCIAL EXTENDED | COMMERCIAL | COMMERCIAL | COMMERCIAL | — | — | COMMERCIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) - annealed | Nickel/Palladium/Gold (Ni/Pd/Au) | — | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Tin/Lead (Sn/Pb) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE | GULL WING | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | — | — | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 1.27 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 1.27 mm | — | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | — | — | DUAL | DUAL | DUAL | DUAL | DUAL |
| ## UC3843N Alternates Showing results | Image | — | — | — | — | — | — | — | — | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | 260 | — | — | NOT SPECIFIED | — | — | — | — | — | — | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | 30 | — | — | NOT SPECIFIED | — | — | — | — | — | — | — | — |
| ## UC3843D Alternates Showing results | — | Image | — | — | — | — | — | — | — | — | — | — | — |
| Factory Lead Time | — | — | 14 Weeks | 14 Weeks | 14 Weeks | — | — | — | — | — | — | — | — |
| ## UC2844BN Alternates Showing results | — | — | Image | — | — | — | — | — | — | — | — | — | — |
| ## UC3844BN Alternates Showing results | — | — | — | Image | — | — | — | — | — | — | — | — | — |
| ## UC3842BN Alternates Showing results | — | — | — | — | Image | — | — | — | — | — | — | — | — |
| Output Voltage-Max | — | — | — | — | — | 5.1 V | — | — | — | 5.1 V | 5.1 V | 5.1 V | 5.1 V |
| Output Voltage-Min | — | — | — | — | — | 4.9 V | — | — | — | 4.9 V | 4.9 V | 4.9 V | 4.9 V |
| Supply Voltage-Nom (Vsup) | — | — | — | — | — | 11 V | — | — | — | 11 V | 11 V | 11 V | 11 V |
| ## UC3843AN Alternates Showing results | — | — | — | — | — | Image | — | — | — | — | — | — | — |
| Reach Compliance Code | — | — | — | — | — | — | Compliant | — | — | — | — | — | — |
| Additional Feature | — | — | — | — | — | — | POLARIZED, TOP ENTRY | — | — | — | — | — | — |
| Board Mounting Option | — | — | — | — | — | — | SOLDERABLE RETENTION CLIPS | — | — | — | — | — | — |
| Body Breadth | — | — | — | — | — | — | 0.205 inch | — | — | — | — | — | — |
| Body Depth | — | — | — | — | — | — | 0.16 inch | — | — | — | — | — | — |
| Body Length | — | — | — | — | — | — | 0.881 inch | — | — | — | — | — | — |
| Body/Shell Style | — | — | — | — | — | — | RECEPTACLE | — | — | — | — | — | — |
| Connector Type | — | — | — | — | — | — | BOARD CONNECTOR | — | — | — | — | — | — |
| Contact Finish Mating | — | — | — | — | — | — | NOT APPLICABLE | — | — | — | — | — | — |
| Contact Gender | — | — | — | — | — | — | FEMALE | — | — | — | — | — | — |
| Contact Material | — | — | — | — | — | — | NOT APPLICABLE | — | — | — | — | — | — |
| Contact Pattern | — | — | — | — | — | — | STAGGERED | — | — | — | — | — | — |
| Contact Style | — | — | — | — | — | — | BELLOWED TYPE | — | — | — | — | — | — |
| DIN Conformance | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Durability | — | — | — | — | — | — | 20 Cycles | — | — | — | — | — | — |
| EMI Shielded | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Empty Shell | — | — | — | — | — | — | YES | — | — | — | — | — | — |
| Filter Feature | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| IEC Conformance | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Insertion Force-Max | — | — | — | — | — | — | 4.8928 N | — | — | — | — | — | — |
| Insulation Resistance | — | — | — | — | — | — | 1000000000 Ω | — | — | — | — | — | — |
| Insulator Color | — | — | — | — | — | — | RED | — | — | — | — | — | — |
| Insulator Material | — | — | — | — | — | — | GLASS FILLED POLYBUTYLENE TEREPHTHALATE | — | — | — | — | — | — |
| MIL Conformance | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Mains Connector Rating | — | — | — | — | — | — | 1A | — | — | — | — | — | — |
| Mating Contact Pitch | — | — | — | — | — | — | 0.1 inch | — | — | — | — | — | — |
| Mating Contact Row Spacing | — | — | — | — | — | — | 0.059 inch | — | — | — | — | — | — |
| Mating Information | — | — | — | — | — | — | MULTIPLE MATING PARTS AVAILABLE | — | — | — | — | — | — |
| Mixed Contacts | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Mounting Option 1 | — | — | — | — | — | — | LOCKING | — | — | — | — | — | — |
| Mounting Option 2 | — | — | — | — | — | — | FRICTION LOCK | — | — | — | — | — | — |
| Mounting Style | — | — | — | — | — | — | STRAIGHT | — | — | — | — | — | — |
| Mounting Type | — | — | — | — | — | — | BOARD | — | — | — | — | — | — |
| Number Of Connectors | — | — | — | — | — | — | ONE | — | — | — | — | — | — |
| Number Of PCB Rows | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
| Number of Ports | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
| Number of Rows Loaded | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
| Option | — | — | — | — | — | — | GENERAL PURPOSE | — | — | — | — | — | — |
| PCB Contact Pattern | — | — | — | — | — | — | STAGGERED | — | — | — | — | — | — |
| PCB Contact Row Spacing | — | — | — | — | — | — | 2.54 mm | — | — | — | — | — | — |
| Panel Mount | — | — | — | — | — | — | NO | — | — | — | — | — | — |
| Plating Thickness | — | — | — | — | — | — | 196.85u inch | — | — | — | — | — | — |
| Polarization Key | — | — | — | — | — | — | POLARIZED HOUSING | — | — | — | — | — | — |
| Rated Current (Signal) | — | — | — | — | — | — | 1 A | — | — | — | — | — | — |
| Rated Voltage | — | — | — | — | — | — | 100 V | — | — | — | — | — | — |
| Reference Standard | — | — | — | — | — | — | UL | — | — | — | — | — | — |
| Terminal Length | — | — | — | — | — | — | 0.122 inch | — | — | — | — | — | — |
| Termination Type | — | — | — | — | — | — | SOLDER | — | — | — | — | — | — |
| Total Number of Contacts | — | — | — | — | — | — | 16 | — | — | — | — | — | — |
| UL Flammability Code | — | — | — | — | — | — | 94V-0 | — | — | — | — | — | — |
| Daisy Chain Without | — | — | — | — | — | — | Primary Product Color Red | — | — | — | — | — | — |
| Number of Positions 16 | — | — | — | — | — | — | PCB Mount Orientation Vertical | — | — | — | — | — | — |
| PCB Contact Termination Area Plating Material Tin | — | — | — | — | — | — | Contact Underplating Material Nickel | — | — | — | — | — | — |
| ## UC3845N Alternates Showing results | — | — | — | — | — | — | — | — | Image | — | — | — | — |
| ## UC3844AN Alternates Showing results | — | — | — | — | — | — | — | — | — | Image | — | — | — |
| ## UC3845AN Alternates Showing results | — | — | — | — | — | — | — | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 12 alternatives for UC3843N — response within 24 hours.
Quick Links
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Why Look for Alternatives?
Finding alternatives for UC3843N is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating UC3843N replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to UC3843N?
Known equivalents for UC3843N include UC3843D, UC2844BN, UC3844BN. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of UC3843N?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify UC3843N alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.