UC3842JAlternatives & Equivalent Parts
About UC3842J
UC3842J is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Ceramic Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | UC3842JSource | UC3842N | UC3845AJ | UC3842AN | UC3843N | UC3845N | UC3845P |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Ceramic Dual-In-Line Packages | — | Ceramic Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages |
| Pin Count | 8 | — | 8 | 8 | 8 | 8 | 8 |
| Temperature Range | ~ 70.0°C | — | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C |
| Price | — | $0.5278 | — | $0.3232 | $0.4260 | $0.3232 | $12.0356 |
| Electrical Parameters | |||||||
| Pbfree Code | Yes | — | Yes | Yes | Yes | Yes | — |
| YTEOL | 15 | — | 15 | 15 | 15 | 15 | 0 |
| 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 | 25 V |
| Input Voltage-Min | 11.5 V | — | 8.2 V | 11.5 V | 8.2 V | 8.2 V | 8.2 V |
| Input Voltage-Nom | 15 V | — | 15 V | 15 V | 15 V | 15 V | 15 V |
| JESD-30 Code | R-GDIP-T8 | — | R-GDIP-T8 | R-PDIP-T8 | R-PDIP-T8 | R-PDIP-T8 | R-PDIP-T8 |
| JESD-609 Code | e0 | — | e0 | 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-Max | 5.1 V | — | — | 5.1 V | — | — | 2.58 V |
| Output Voltage-Min | 4.9 V | — | — | 4.9 V | — | — | 2.42 V |
| Output Voltage-Nom | 5 V | — | 5 V | 5 V | 5 V | 5 V | 2.5 V |
| Package Body Material | CERAMIC, GLASS-SEALED | — | CERAMIC, GLASS-SEALED | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 | — | DIP8,.3 | DIP8,.3 | DIP8,.3 | DIP8,.3 | DIP8,.3 |
| Package Shape | RECTANGULAR | — | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | 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 |
| 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 | — |
| Supply Voltage-Min (Vsup) | 16 V | — | 8.4 V | 16 V | 8.4 V | 8.4 V | — |
| Supply Voltage-Nom (Vsup) | 11 V | — | — | 11 V | — | — | — |
| Surface Mount | NO | — | NO | NO | NO | NO | NO |
| Switcher Configuration | BUCK-BOOST | — | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST | BUCK-BOOST | SINGLE |
| Switching Frequency-Max | 500 kHz | — | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz |
| Technology | BIPOLAR | — | BICMOS | BIPOLAR | BICMOS | BICMOS | BIPOLAR |
| Temperature Grade | COMMERCIAL | — | COMMERCIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Tin/Lead (Sn/Pb) | — | Tin/Lead (Sn/Pb) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | — |
| Terminal Form | THROUGH-HOLE | — | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | — | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| Terminal Position | DUAL | — | DUAL | DUAL | DUAL | DUAL | DUAL |
| ## UC3843N Alternates Showing results | — | — | — | — | Image | — | — |
| ## UC3845N Alternates Showing results | — | — | — | — | — | Image | — |
| Peak Reflow Temperature (Cel) | — | — | — | — | — | — | NOT SPECIFIED |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | — | — | — | NOT SPECIFIED |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDIP8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, CDIP8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDIP8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDIP8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDIP8
Why Look for Alternatives?
Finding alternatives for UC3842J 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 UC3842J 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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Request Alternatives for UC3842JFAQ
What is equivalent to UC3842J?
Known equivalents for UC3842J include UC3842N, UC3845AJ, UC3842AN. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of UC3842J?
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 UC3842J 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.