UC3843DAlternatives & Equivalent Parts
About UC3843D
UC3843D is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline 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 7 alternatives for UC3843D — response within 24 hours.
Specification Comparison
| Parameter | UC3843DSource | UC3843DG4 | UC3843N | IPS1-105-01-L-D | UC3842D | UC3845D | UC3842D8 | UC3844AD |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | SAMTEC | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | Small Outline Packages | Dual-In-Line Packages | Other | — | Small Outline Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 14 | 14 | 8 | 10 | — | 14 | 8 | 14 |
| Temperature Range | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | -55.0°C ~ 105.0°C | — | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C |
| Price | $0.3650 | $0.6585 | $0.4260 | $0.8750 | $0.5917 | $0.5917 | $0.6000 | $0.5274 |
| 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 |
| Electrical Parameters | ||||||||
| Pbfree Code | Yes | Yes | Yes | Yes | — | Yes | Yes | Yes |
| YTEOL | 15 | 15 | 15 | 8 | — | 15 | 15 | 15 |
| Analog IC - Other Type | 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 |
| Control Technique | 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 | 28 V | — | — | 28 V | 28 V | 28 V |
| Input Voltage-Min | 8.2 V | 8.2 V | 8.2 V | — | — | 8.2 V | 11.5 V | 11.5 V |
| Input Voltage-Nom | 15 V | 15 V | 15 V | — | — | 15 V | 15 V | 15 V |
| JESD-30 Code | R-PDSO-G14 | R-PDSO-G14 | R-PDIP-T8 | — | — | R-PDSO-G14 | R-PDSO-G8 | R-PDSO-G14 |
| JESD-609 Code | e4 | e4 | e4 | e3 | — | e4 | e4 | e4 |
| Number of Functions | 1 | 1 | 1 | — | — | 1 | 1 | 1 |
| Output Current-Max | 1 A | 1 A | 1 A | — | — | 1 A | 1 A | 1 A |
| Output Voltage-Nom | 2.5 V | 2.5 V | 5 V | — | — | 2.5 V | 5 V | 5 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | — | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 | SOP14,.25 | DIP8,.3 | — | — | SOP14,.25 | SOP8,.25 | SOP14,.25 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | — | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | IN-LINE | — | — | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 | 260 | — | — | — | 260 | 260 | 260 |
| Qualification Status | 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 |
| Supply Voltage-Max (Vsup) | 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 |
| Surface Mount | YES | YES | NO | — | — | YES | YES | YES |
| Switcher Configuration | 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 |
| Technology | BIPOLAR | BIPOLAR | BICMOS | — | — | BIPOLAR | BICMOS | BIPOLAR |
| Temperature Grade | COMMERCIAL | COMMERCIAL | COMMERCIAL | — | — | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | — | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING | THROUGH-HOLE | — | — | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm | 2.54 mm | — | — | 1.27 mm | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | — | — | DUAL | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | — | — | — | 30 | 30 | 30 |
| ## UC3843D Alternates Showing results | Image | — | — | — | — | — | — | — |
| ## UC3843N Alternates Showing results | — | — | Image | — | — | — | — | — |
| Factory Lead Time | — | — | — | 1 Week | — | — | — | — |
| Additional Feature | — | — | — | MINI MATE; TIGER BUY, SHROUDED | — | — | — | — |
| Body/Shell Style | — | — | — | RECEPTACLE | — | — | — | — |
| Connector Type | — | — | — | RECTANGULAR POWER CONNECTOR | — | — | — | — |
| Contact Arrangement | — | — | — | S0P10 | — | — | — | — |
| Contact Finish Mating | — | — | — | GOLD (10) OVER NICKEL (50) | — | — | — | — |
| Contact Finish Termination | — | — | — | Tin (Sn) - with Nickel (Ni) barrier | — | — | — | — |
| Contact Gender | — | — | — | FEMALE | — | — | — | — |
| Contact Material | — | — | — | PHOSPHOR BRONZE | — | — | — | — |
| Contact Style | — | — | — | SQ PIN-SKT | — | — | — | — |
| DIN Conformance | — | — | — | NO | — | — | — | — |
| Empty Shell | — | — | — | NO | — | — | — | — |
| Filter Feature | — | — | — | NO | — | — | — | — |
| IEC Conformance | — | — | — | NO | — | — | — | — |
| Insertion Force-Max | — | — | — | 1.668 N | — | — | — | — |
| Insulator Color | — | — | — | BLACK | — | — | — | — |
| Insulator Material | — | — | — | LIQUID CRYSTAL POLYMER | — | — | — | — |
| MIL Conformance | — | — | — | NO | — | — | — | — |
| Mating Information | — | — | — | MULTIPLE MATING PARTS AVAILABLE | — | — | — | — |
| Mixed Contacts | — | — | — | NO | — | — | — | — |
| Mounting Option 1 | — | — | — | LOCKING | — | — | — | — |
| Mounting Style | — | — | — | STRAIGHT | — | — | — | — |
| Mounting Type | — | — | — | BOARD | — | — | — | — |
| Number Of Connectors | — | — | — | ONE | — | — | — | — |
| Option | — | — | — | GENERAL PURPOSE | — | — | — | — |
| Plating Thickness | — | — | — | 10u inch | — | — | — | — |
| Rated Current (Signal) | — | — | — | 5.9 A | — | — | — | — |
| Terminal Length | — | — | — | 0.1 inch | — | — | — | — |
| Termination Type | — | — | — | SOLDER | — | — | — | — |
| Total Number of Contacts | — | — | — | 10 | — | — | — | — |
| Withdrawl Force-Min | — | — | — | 1.39 N | — | — | — | — |
| ## UC3845D Alternates Showing results | — | — | — | — | — | Image | — | — |
| ## UC3842D8 Alternates Showing results | — | — | — | — | — | — | Image | — |
| Output Voltage-Max | — | — | — | — | — | — | — | 5.1 V |
| Output Voltage-Min | — | — | — | — | — | — | — | 4.9 V |
| Supply Voltage-Nom (Vsup) | — | — | — | — | — | — | — | 11 V |
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 7 alternatives for UC3843D — response within 24 hours.
Quick Links
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14
suggested
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDSO8
Why Look for Alternatives?
Finding alternatives for UC3843D 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 UC3843D 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.
Can't Find What You Need?
Our sourcing team can help find compatible alternatives for UC3843D. Get expert recommendations within 24 hours.
FAQ
What is equivalent to UC3843D?
Known equivalents for UC3843D include UC3843DG4, UC3843N, IPS1-105-01-L-D. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of UC3843D?
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 UC3843D 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.