UC3843BNAlternatives & Equivalent Parts
About UC3843BN
UC3843BN is a Integrated Circuit component manufactured by STMicroelectronics. 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.
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Get one quote covering all 7 alternatives for UC3843BN — response within 24 hours.
Specification Comparison
| Parameter | UC3843BNSource | UC3843N | SN74LVC1G123DCTR | CNY74-2H | LM393N | ADL5387ACPZ | BDX54C | UC3843BNG |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Texas Instruments | Texas Instruments | Vishay | Texas Instruments | Analog Devices | STMicroelectronics | ON Semiconductor |
| Package Type | Dual-In-Line Packages | Dual-In-Line Packages | Small Outline Packages | Dual-In-Line Packages | Dual-In-Line Packages | Quad Flat No-Lead | Transistor Outline, Vertical | Dual-In-Line Packages |
| Pin Count | 8 | 8 | 8 | 8 | 8 | 25 | 3 | 8 |
| Temperature Range | ~ 70.0°C | ~ 70.0°C | -40.0°C ~ 125.0°C | -55.0°C ~ 110.0°C | ~ 70.0°C | — | ~ 150.0°C | ~ 70.0°C |
| Price | $0.3350 | $0.4260 | $0.2940 | $0.3236 | $0.0893 | $8.2080 | $0.1758 | $0.3136 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | OBSOLETE | OBSOLETE | — | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||||
| Factory Lead Time | 14 Weeks | — | — | 111 Weeks | — | — | 14 Weeks | — |
| YTEOL | 6 | 15 | 15 | 0 | 0 | — | 9 | 6 |
| Analog IC - Other Type | SWITCHING CONTROLLER | SWITCHING CONTROLLER | — | — | — | — | — | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE | CURRENT-MODE | — | — | — | — | — | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | — | — | — | — | — | PULSE WIDTH MODULATION |
| Input Voltage-Max | 30 V | 28 V | — | — | — | — | — | 25 V |
| Input Voltage-Min | 8.2 V | 8.2 V | — | — | — | — | — | 12 V |
| Input Voltage-Nom | 15 V | 15 V | — | — | — | — | — | 15 V |
| JESD-30 Code | R-PDIP-T8 | R-PDIP-T8 | R-PDSO-G8 | — | R-PDIP-T8 | — | R-PSFM-T3 | R-PDIP-T8 |
| JESD-609 Code | e4 | e4 | e4 | e3 | e3 | — | e3 | e3 |
| Number of Functions | 1 | 1 | 1 | — | 2 | — | — | 1 |
| Output Current-Max | 1 A | 1 A | — | — | — | — | — | 1 A |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY | — | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 | DIP8,.3 | SSOP8,.16 | — | DIP8,.3 | — | — | DIP8,.3 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | RECTANGULAR | — | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | IN-LINE | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | — | IN-LINE | — | FLANGE MOUNT | IN-LINE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | Not Qualified | — | Not Qualified | Not Qualified |
| Surface Mount | NO | NO | YES | NO | NO | — | NO | NO |
| Switcher Configuration | SINGLE | BUCK-BOOST | — | — | — | — | — | BUCK-BOOST |
| Switching Frequency-Max | 500 kHz | 500 kHz | — | — | — | — | — | 500 kHz |
| Technology | BIPOLAR | BICMOS | CMOS | — | BIPOLAR | — | — | BIPOLAR |
| Temperature Grade | COMMERCIAL | COMMERCIAL | AUTOMOTIVE | — | COMMERCIAL | — | — | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Tin (Sn) | TIN | — | Matte Tin (Sn) | Matte Tin (Sn) - annealed |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | GULL WING | — | THROUGH-HOLE | — | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | 2.54 mm | 0.65 mm | — | 2.54 mm | — | — | 2.54 mm |
| Terminal Position | DUAL | DUAL | DUAL | — | DUAL | — | SINGLE | DUAL |
| ## UC3843BN Alternates Showing results | Image | — | — | — | — | — | — | — |
| Pbfree Code | — | Yes | Yes | — | Yes | — | — | Yes |
| Output Voltage-Nom | — | 5 V | — | — | — | — | — | — |
| Supply Current-Max (Isup) | — | 25 mA | — | — | — | — | — | — |
| Supply Voltage-Max (Vsup) | — | 28 V | 5.5 V | — | — | — | — | — |
| Supply Voltage-Min (Vsup) | — | 8.4 V | 1.65 V | — | — | — | — | — |
| ## UC3843N Alternates Showing results | — | Image | — | — | — | — | — | — |
| Family | — | — | LVC/LCX/Z | — | — | — | — | — |
| Load Capacitance (CL) | — | — | 50 pF | — | — | — | — | — |
| Logic IC Type | — | — | MONOSTABLE MULTIVIBRATOR | — | — | — | — | — |
| Max I(ol) | — | — | 0.032 A | — | — | — | — | — |
| Number of Bits | — | — | 1 | — | — | — | — | — |
| Number of Data/Clock Inputs | — | — | 2 | — | — | — | — | — |
| Output Characteristics | — | — | 3-STATE | — | — | — | — | — |
| Output Polarity | — | — | TRUE | — | — | — | — | — |
| Packing Method | — | — | TR | — | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | — | 260 | — | 260 | — | — | — |
| Power Supply Current-Max (ICC) | — | — | 0.02 mA | — | — | — | — | — |
| Propagation Delay (tpd) | — | — | 57 ns | — | — | — | — | — |
| Schmitt Trigger | — | — | YES | — | — | — | — | — |
| Supply Voltage-Nom (Vsup) | — | — | 1.8 V | — | 5 V | — | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | 30 | — | 30 | — | — | — |
| ## SN74LVC1G123DCTR Alternates Showing results | — | — | Image | — | — | — | — | — |
| Additional Feature | — | — | — | UL RECOGNIZED | — | — | — | — |
| Coll-Emtr Bkdn Voltage-Min | — | — | — | 70 V | — | — | — | — |
| Configuration | — | — | — | SEPARATE, 2 CHANNELS | — | — | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | — |
| Current Transfer Ratio-Min | — | — | — | 50% | — | — | — | — |
| Dark Current-Max | — | — | — | 100 nA | — | — | — | — |
| Forward Current-Max | — | — | — | 0.06 A | — | — | — | — |
| Isolation Voltage-Max | — | — | — | 5300 V | — | — | — | — |
| Mounting Feature | — | — | — | THROUGH HOLE MOUNT | — | — | — | — |
| Number of Elements | — | — | — | 2 | — | — | 1 | — |
| Optoelectronic Device Type | — | — | — | TRANSISTOR OUTPUT OPTOCOUPLER | — | — | — | — |
| Manufacturer Package Code | — | — | — | — | 626-05 | — | — | 626-05 |
| Amplifier Type | — | — | — | — | COMPARATOR | — | — | — |
| Average Bias Current-Max (IIB) | — | — | — | — | 0.4 µA | — | — | — |
| Input Offset Voltage-Max | — | — | — | — | 9000 µV | — | — | — |
| Output Type | — | — | — | — | OPEN-COLLECTOR | — | — | — |
| Response Time-Nom | — | — | — | — | 1300 ns | — | — | — |
| Supply Current-Max | — | — | — | — | 2.5 mA | — | — | — |
| Supply Voltage Limit-Max | — | — | — | — | 36 V | — | — | — |
| Collector Current-Max (IC) | — | — | — | — | — | — | 8 A | — |
| Collector-Emitter Voltage-Max | — | — | — | — | — | — | 100 V | — |
| DC Current Gain-Min (hFE) | — | — | — | — | — | — | 750 | — |
| JEDEC-95 Code | — | — | — | — | — | — | TO-220AB | — |
| Polarity/Channel Type | — | — | — | — | — | — | PNP | — |
| Power Dissipation Ambient-Max | — | — | — | — | — | — | 60 W | — |
| Power Dissipation-Max (Abs) | — | — | — | — | — | — | 60 W | — |
| Transistor Application | — | — | — | — | — | — | SWITCHING | — |
| Transistor Element Material | — | — | — | — | — | — | SILICON | — |
| Transition Frequency-Nom (fT) | — | — | — | — | — | — | 20 MHz | — |
| VCEsat-Max | — | — | — | — | — | — | 2 V | — |
| ## BDX54C 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 7 alternatives for UC3843BN — response within 24 hours.
Quick Links
Rochester Electronics LLC 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8, GREEN, PLASTIC, DIP-8
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Why Look for Alternatives?
Finding alternatives for UC3843BN 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 UC3843BN 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 UC3843BN?
Known equivalents for UC3843BN include UC3843N, SN74LVC1G123DCTR, CNY74-2H. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of UC3843BN?
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 UC3843BN 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.