Side-by-Side Sourcing & Spec Comparison
Compare Component Specifications
Put parts from the same manufacturer or across different makers side by side. Type part numbers to compare packages, pinout compatibility, electrical ratings, and live Shenzhen inventory across multiple models.
Checked against original manufacturer datasheets
Second-source index: 116 parts, 348 verified substitutes
Every row below was checked against the original manufacturer datasheet before it was written — package, pinout and the electrical ratings that decide whether a swap is safe. The level says how far the swap goes: drop-in needs no change, pin-to-pin matches the footprint but wants a clock or initialisation check, and function only, pinout differs does the same job on a different footprint — a redesign, not a swap. Parts that are related rather than interchangeable in any of those senses — a different pin assignment, a negative rail against a positive one — are not listed here; they stay on the part pages, where the warning travels with them. Load any pair into the comparison above to see the two side by side.
| Original part | Package | Verified substitutes | Compare |
|---|---|---|---|
| 1N4007 | DO-41 (DO-204AL) axial | M7 (function only, pinout differs) · S1M (function only, pinout differs) · 1N5408 (function only, pinout differs) · US1M (function only, pinout differs) | Compare → |
| 1N4148 | DO-35 glass axial | 1N4448 (drop-in) · 1N914B (drop-in) · LL4148 (function only, pinout differs) · 1N4148W (function only, pinout differs) · BAS16 (function only, pinout differs) | Compare → |
| 1N4733A | DO-41 (DO-204AL) glass | BZX55C5V1 (function only, pinout differs) · 1N4733AUR / MLL4733A (function only, pinout differs) · 1N4733C / 1N4733D (drop-in) | Compare → |
| 1N5817 | DO-41 axial | 1N5819 (drop-in) · SS14 (function only, pinout differs) · 1N5819HW-7-F (function only, pinout differs) · 1N5822 (function only, pinout differs) | Compare → |
| 24C02 | DIP-8 / SOIC-8 / TSSOP-8 | 24C16 (pin-to-pin) · 24C32 / 24C64 (function only, pinout differs) · AT24C02 vs CAT24C02 vs ST24C02 (drop-in) | Compare → |
| 2N2222A | TO-92 / TO-18 (original) | PN2222A (function only, pinout differs) · P2N2222A (function only, pinout differs) · 2N2907A (function only, pinout differs) | Compare → |
| 2N3055 / MJ2955 | TO-3 (TO-204AA) | TIP3055 / TIP2955 (function only, pinout differs) · MJE3055T (function only, pinout differs) · 2SC5200 / 2SA1943 (function only, pinout differs) | Compare → |
| 2N3904 / 2N3906 | TO-92 / SOT-23 | BC547 / BC557 (function only, pinout differs) · 2N2222A (drop-in) · 2N4401 / 2N4403 (drop-in) | Compare → |
| 2N7002 / BSS138 | SOT-23 (+ TO-92 for 2N7000) | BSS138 (function only, pinout differs) · 2N7002K (function only, pinout differs) · AO3400 (function only, pinout differs) | Compare → |
| 2P4M | TO-202AA | 2P6M (drop-in) · C106M (function only, pinout differs) · CR2PM-8UE (function only, pinout differs) | Compare → |
| 2SC5200 / 2SA1943 | TO-3P(L) | TTC5200 (drop-in) · TTA1943 (drop-in) · NJW0281G (function only, pinout differs) · NJW0302G (function only, pinout differs) · MJL21194 (function only, pinout differs) · MJL21193 (function only, pinout differs) | Compare → |
| 2SC945 / 2SA733 | TO-92 | 2SC1815 (drop-in) · 2SA1015 (drop-in) · KSC945C (drop-in) · BC547 (function only, pinout differs) | Compare → |
| 2SD882 / 2SB772 | TO-126 | BD139 (function only, pinout differs) · 2SB772 (drop-in) · TIP31C (function only, pinout differs) | Compare → |
| 4N35 / 4N25 | DIP-6 | 4N25 (drop-in) · 4N37 (drop-in) · H11A1 (function only, pinout differs) · PC817 (function only, pinout differs) | Compare → |
| 6N137 | DIP-8 / SOP-8 | 6N136 (function only, pinout differs) · HCPL-2601 (drop-in) · EL2601 / ICPL2601 (drop-in) | Compare → |
| 74HC595 | DIP-16 / SOIC-16 | 74HCT595 (drop-in) · 74LS595 (drop-in) · TPIC6B595 (function only, pinout differs) | Compare → |
| A4988 | QFN-28 (die) / StepStick 16-pin module | DRV8825 (pin-to-pin) · TMC2208 (pin-to-pin) · A4988 (clone boards) (function only, pinout differs) | Compare → |
| AD620 | DIP-8 / SOIC-8 | AD8221 (drop-in) · AD623 (function only, pinout differs) · INA128 (pin-to-pin) | Compare → |
| AD8605 | SOT-23-5 / MSOP-8 / TSSOP-14 | AD8606 (function only, pinout differs) · AD8608 (function only, pinout differs) | Compare → |
| ADM2483 | SOIC-16 wide body (16-lead SOIC_W) | ADM2486 (drop-in) · ADM2582E / ADM2587E (function only, pinout differs) · MAX13487 / MAX485 class (non-isolated) (function only, pinout differs) | Compare → |
| ADS1115 | MSOP-10 / QFN-10 | ADS1015 (drop-in) · ADS1114 (pin-to-pin) · ADS1113 (pin-to-pin) | Compare → |
| ADuM1201 | SOIC-8 (narrow body) | ADuM1200 (pin-to-pin) · ADuM121N1 (pin-to-pin) · ADuM1285 (pin-to-pin) | Compare → |
| AMS1117-3.3 | SOT-223 (3-pin + tab) | CJ1117-3.3 (drop-in) · ME6211C33M5G (function only, pinout differs) | Compare → |
| AT89S52 | PDIP-40 / TQFP-44 / PLCC-44 | STC89C52RC (pin-to-pin) · AT89C52 (pin-to-pin) · AT89S51 (drop-in) | Compare → |
| ATmega328P | DIP-28 / TQFP-32 / QFN-32 | ATmega328PB (pin-to-pin) · ATmega328P-AU (drop-in) · LGT8F328P (function only, pinout differs) · ATmega168PA (function only, pinout differs) | Compare → |
| BC547 | TO-92 | BC547B (drop-in) · BC337 (drop-in) · BC847B (function only, pinout differs) · 2N3904 (function only, pinout differs) | Compare → |
| BD139 / BD140 | TO-126 (SOT-32) | 2SD882 (function only, pinout differs) · MJE340 (function only, pinout differs) · TIP31C (function only, pinout differs) · BD140 (drop-in) | Compare → |
| BQ76952 | TQFP-48 | BQ76942 (pin-to-pin) · BQ76972 (pin-to-pin) · BQ76940 (function only, pinout differs) | Compare → |
| BT136 / BTA16 | TO-220AB | BT137 (drop-in) · BTA16 (function only, pinout differs) · BTA41 (function only, pinout differs) | Compare → |
| BT151-600R | TO-220AB (SOT78) | BT152-600R (function only, pinout differs) · TYN612 (drop-in) · TYN812 (drop-in) | Compare → |
| CD4011B | DIP-14 / SOIC-14 / TSSOP-14 | HEF4011B (drop-in) · MC14011B (drop-in) · CD4093B (function only, pinout differs) | Compare → |
| CD4017 | DIP-16 / SOIC-16 | HEF4017B (drop-in) · MC14017B (drop-in) · CD4022 (function only, pinout differs) | Compare → |
| CD4051B | DIP-16 / SOIC-16 | 74HC4051 (pin-to-pin) · CD4053B (function only, pinout differs) | Compare → |
| CH340G | SOP-16 | CH340C (drop-in) · CH340N (function only, pinout differs) | Compare → |
| DS1302 | DIP-8 / SOIC-8 | DS3231 (function only, pinout differs) | Compare → |
| DS1307 / DS3231 | SO-8 (DS1307) / SO-16 (DS3231) | DS3231 (function only, pinout differs) · DS3231M (pin-to-pin) · DS1307 (function only, pinout differs) | Compare → |
| DS18B20 | TO-92 / SOIC-8 / uSOP-8 | MAX31820 (function only, pinout differs) · DS18S20 (pin-to-pin) · DS18B20+ (drop-in) | Compare → |
| DW01A | SOT-23-6 | DW01B / DW01C (pin-to-pin) · FS8205A / PW8205A (drop-in) | Compare → |
| FGA25N120 | TO-3P (EIAJ SC-65) / TO-247 | IKW25N120H3 (pin-to-pin) · IKW25N120T2 (pin-to-pin) · 25N120 (market grade) (function only, pinout differs) | Compare → |
| FR107 | DO-41 / DO-15 | FR207 (function only, pinout differs) · RL207 (function only, pinout differs) · HER208 (function only, pinout differs) · 1N4007 (function only, pinout differs) | Compare → |
| FT232RL | SSOP-28 | CH340C (function only, pinout differs) · CP2102N-A02-GQFN28 (function only, pinout differs) | Compare → |
| iCE40 | QFN / ucBGA / WLCSP / TQFP | iCE40HX1K (function only, pinout differs) · ECP5 (function only, pinout differs) | Compare → |
| ICL7660 | DIP-8 / SOIC-8 | MAX1044 (pin-to-pin) · MAX660 (function only, pinout differs) · LTC1044 (drop-in) | Compare → |
| IR2110 | DIP-14 / SOIC-16 | IR2113 (drop-in) · IRS2110 (pin-to-pin) · FAN7392 (function only, pinout differs) · TF2110 (function only, pinout differs) | Compare → |
| IR2130 | DIP-28 / SOIC-28 (IR2130 also PLCC-44) | IR2132 (pin-to-pin) · IR2136 family (IR21362 - IR21368) (function only, pinout differs) · IR2110 (discrete route) (function only, pinout differs) | Compare → |
| IR2153 | DIP-8 / SOIC-8 | IR2153D (drop-in) · IR2155 (pin-to-pin) · IRS2153D (pin-to-pin) | Compare → |
| IRF540N | TO-220AB | IRLZ44N (pin-to-pin) · IRFZ44N (function only, pinout differs) · IRF3205 (function only, pinout differs) · IRL540 (function only, pinout differs) · IRFZ24N (function only, pinout differs) | Compare → |
| IRF840 | TO-220AB (IRFI versions: TO-220 FullPak) | IRF830 (function only, pinout differs) · IRF820 (function only, pinout differs) · IRFI840G / IRFI830G (function only, pinout differs) | Compare → |
| IRF9540 | TO-220AB | IRF4905 (function only, pinout differs) · IRF5210 (function only, pinout differs) · IRF9530 (function only, pinout differs) | Compare → |
| IRFP460 | TO-247AC | IRFP450 (function only, pinout differs) · IRFP460LC (drop-in) · IRFP250 (function only, pinout differs) | Compare → |
| KBPC3510 | KBPC (metal case, lug terminals) / KBPC-W (wire leads) | KBPC2510 (function only, pinout differs) · KBPC3510W (function only, pinout differs) · KBPC5010 (drop-in) | Compare → |
| L293D | DIP-16 / SOIC-16 | SN754410 (drop-in) · L293 / L293B (pin-to-pin) · L298N (module route) (function only, pinout differs) | Compare → |
| L298N | MultiWatt-15 / module | L293D (function only, pinout differs) · TB6612FNG (function only, pinout differs) | Compare → |
| L6562A | SO-8 / DIP-8 | L6562 (pin-to-pin) · L6561 (function only, pinout differs) | Compare → |
| L7905 / L7912 | TO-220 / TO-220FP / D2PAK | L7912 (drop-in) · L79xxAC (drop-in) · LM337 (function only, pinout differs) | Compare → |
| LM2576 | TO-220-5 / TO-263-5 | LM2596 (drop-in) · LM2576HV (drop-in) · LM2575 (function only, pinout differs) | Compare → |
| LM2596 | TO-263 / TO-220-5 | LM2576 (pin-to-pin) · XL2596 (drop-in) | Compare → |
| LM311 | DIP-8 / SOIC-8 | LM211 (drop-in) · LT1011 (pin-to-pin) | Compare → |
| LM317 | TO-220 / SOT-223 / TO-92 / DPAK | LM317T (drop-in) · LM317L (function only, pinout differs) · AMS317 (function only, pinout differs) · LM338 (function only, pinout differs) | Compare → |
| LM324 | SOIC-14 / DIP-14 / TSSOP-14 | LM2902 (drop-in) · LM324B (drop-in) · LM324LV (pin-to-pin) · LM358 (function only, pinout differs) | Compare → |
| LM337 | TO-220 / SOT-223 / TO-92 (L) | LM337L (function only, pinout differs) · LM337M (function only, pinout differs) · LM333 (function only, pinout differs) | Compare → |
| LM339 | DIP-14 / SOIC-14 | LM2901 (drop-in) · LM339B (drop-in) · LM393 (function only, pinout differs) | Compare → |
| LM35 | TO-92 / SOIC-8 / TO-46 | LM35DZ (drop-in) · LM335Z (function only, pinout differs) · LM34 (function only, pinout differs) | Compare → |
| LM358DR | SOIC-8 | SGM8552-SR (drop-in) · TP358-SR (drop-in) | Compare → |
| LM386 | DIP-8 / SOIC-8 | LM386N-4 (drop-in) · JRC386 (drop-in) · LM386M-1 (function only, pinout differs) | Compare → |
| LM393 | DIP-8 / SOIC-8 | LM2903 (drop-in) · LM339 (function only, pinout differs) · LM358 (function only, pinout differs) | Compare → |
| LM723 | DIP-14 / TO-100 metal can | LM723C (drop-in) | Compare → |
| LM741 | DIP-8 / TO-99 / SOIC-8 | LM741C (drop-in) · LM741A (drop-in) · uA741 (drop-in) | Compare → |
| LM7805 | TO-220 / TO-92 (78L) / DPAK | 78L05 (function only, pinout differs) · 78M05 (function only, pinout differs) | Compare → |
| LNK364PN | DIP-8 / SMD-8 (PN / GN) | LNK363 (function only, pinout differs) · LNK362 (function only, pinout differs) | Compare → |
| MAX232 | DIP-16 / SOIC-16 | MAX232A (drop-in) · MAX3232 (drop-in) · ST232 (drop-in) | Compare → |
| MAX485ESA+ | SOIC-8 (Narrow 150mil) | TP485E-SR (drop-in) · SP485EEN-L/TR (drop-in) | Compare → |
| MAX6675 | SO-8 / module | MAX31855 (function only, pinout differs) · MAX31856 (function only, pinout differs) | Compare → |
| MC34063 | DIP-8 / SOIC-8 | MC33063A (drop-in) · CW34063 (drop-in) | Compare → |
| MCP2551-I/SN | SOIC-8 | TJA1050T/CM,118 (drop-in) · SIT1050T/3 (drop-in) | Compare → |
| MCR100-8 | TO-92 | BT169G (function only, pinout differs) · MCR100-6 (drop-in) · X00602MA (function only, pinout differs) · C106M (function only, pinout differs) | Compare → |
| MJE13003 | TO-126 | KSE13003 (drop-in) · ST13003 (drop-in) · MJE13005 (function only, pinout differs) · MJE13007 (function only, pinout differs) | Compare → |
| MJE13007 | TO-220 (13009 also TO-3P) | MJE13009 (drop-in) · MJE13005 (function only, pinout differs) · MJE13007A / MJE13007AH (drop-in) | Compare → |
| MOC3021 | DIP-6 | MOC3023 (drop-in) · MOC3041 (function only, pinout differs) · MOC3052 (function only, pinout differs) · MOC3063 (function only, pinout differs) | Compare → |
| MT3608 | SOT-23-6 | SX1308 (drop-in) · MT3608L (pin-to-pin) · MT3608 modules (market grade) (function only, pinout differs) | Compare → |
| NE5532 | DIP-8 / SOIC-8 | NE5532A (drop-in) · LM833 (function only, pinout differs) · NJM5532DD (drop-in) · OPA2134 (function only, pinout differs) | Compare → |
| NE555 | DIP-8 / SOIC-8 | LM555 (drop-in) · NE555D (drop-in) · TLC555 (pin-to-pin) · ICM7555 (pin-to-pin) | Compare → |
| OB2263 | SOT-23-6 / SOP-8 / DIP-8 / MSOP-8 | OB2262 (pin-to-pin) · OB2269 (pin-to-pin) · CR6842S (function only, pinout differs) · LD7575 (function only, pinout differs) | Compare → |
| OP07 | DIP-8 / SOIC-8 | OP177 (drop-in) · OP77 (drop-in) · LM741 (the reverse direction) (function only, pinout differs) | Compare → |
| PC817 | DIP-4 / SMD-4 | LTV-817 (drop-in) · EL817 (drop-in) · TLP521-1 (function only, pinout differs) · HCPL-817 (function only, pinout differs) | Compare → |
| PCF8574 | DIP-16 / SOIC-16 (SSOP-20 variant) | PCF8574A (pin-to-pin) · PCF8574 modules (market grade) (function only, pinout differs) | Compare → |
| PIC16F84A | PDIP-18 / SOIC-18 | PIC16F628A (pin-to-pin) · PIC16F648A (pin-to-pin) · PIC16F627A (pin-to-pin) | Compare → |
| S32K144 | LQFP-100 / LQFP-64 / LQFP-144 | S32K142 (drop-in) · S32K146 (drop-in) | Compare → |
| S8050 / S8550 | TO-92 / SOT-23 | SS8050 (drop-in) · 2N3904 (function only, pinout differs) · BC337 (function only, pinout differs) · S8550 (drop-in) | Compare → |
| SG3525 | DIP-16 / SOIC-16 | UC3525A (drop-in) | Compare → |
| SHT31 | DFN-8 (SHT3x) / DFN-4 (SHT4x) | SHT35 (drop-in) · SHT45 (function only, pinout differs) · SHT21 (function only, pinout differs) | Compare → |
| SS310 | SMC (DO-214AB) / SMB / SMA | SS38 (drop-in) · MBRS3100 (drop-in) · SB5150 (function only, pinout differs) · SR310 (drop-in) | Compare → |
| STK403-070 | Thick-film hybrid (SIP) | STK403-090 (pin-to-pin) · NTE1336 (function only, pinout differs) | Compare → |
| STM32F103C8T6 | LQFP-48 (7x7mm) | GD32F103C8T6 (drop-in) · CH32F103C8T6 (pin-to-pin) | Compare → |
| STM32F407VET6 | LQFP-100 (14x14mm) | GD32F407VET6 (drop-in) | Compare → |
| TDA2030 / LM1875 | Pentawatt (TO-220-5) | TDA2050 (drop-in) · LM1875 (function only, pinout differs) · TDA2030A (drop-in) | Compare → |
| TDA7294 | Multiwatt-15 (vertical) | TDA7293 (pin-to-pin) · LM3886 (function only, pinout differs) | Compare → |
| TDA7388 / TDA7850 | Flexiwatt25 | TDA7560 (drop-in) · TDA7851L (function only, pinout differs) · TDA7386 (drop-in) · YD7388 (function only, pinout differs) | Compare → |
| TEA2025B | DIP-16 (PowerDIP) | KA2206 (drop-in) · TEA2025D (function only, pinout differs) · CD2025GP (function only, pinout differs) · KA2209 (function only, pinout differs) | Compare → |
| TIP122 | TO-220AB | TIP121 (drop-in) · TIP120 (function only, pinout differs) · TIP127 (drop-in) · TIP142 (function only, pinout differs) | Compare → |
| TIP142 / TIP147 | TO-247 (formerly TO-218) | TIP122 / TIP127 (function only, pinout differs) · MJH6284G / MJH6287G (drop-in) · TIP140 / TIP141 (function only, pinout differs) | Compare → |
| TIP41C / TIP42C | TO-220AB | TIP42C (drop-in) · MJE3055T (function only, pinout differs) | Compare → |
| TJA1050 | SO-8 | TJA1051 (drop-in) · TJA1042 (pin-to-pin) · SN65HVD230 (function only, pinout differs) · MCP2551 (function only, pinout differs) | Compare → |
| TL071 | DIP-8 / SOIC-8 | TL081 (drop-in) · TL061 (function only, pinout differs) · TL072 (function only, pinout differs) · TL071H (pin-to-pin) | Compare → |
| TL431 | SOT-23 / TO-92 / SOT-89 / SOIC-8 | KA431 (drop-in) · LM431 (drop-in) · ATL431 (pin-to-pin) | Compare → |
| TL494 | DIP-16 / SOIC-16 | KA7500B (drop-in) · MB3759 (drop-in) | Compare → |
| TLP250 | DIP-8 (gate-drive optocoupler) | TLP350 (drop-in) · HCPL-3120 (function only, pinout differs) · FOD3120 (drop-in) | Compare → |
| TNY277 | DIP-8C (P) / SMD-8C (G) | TNY276 (drop-in) · TNY278 (drop-in) · TNY280 (drop-in) · LNK364 (function only, pinout differs) | Compare → |
| TOP250YN | TO-220-7 (Y package) | TOP258YN (drop-in) · TOP264 (function only, pinout differs) · TNY277 (TinySwitch - different architecture) (function only, pinout differs) | Compare → |
| TP4056 | SOP-8 (ESOP-8) / SOT-23-5 / SOT-23-6 | TP4054 (function only, pinout differs) · TP4057 (function only, pinout differs) · MCP73831 (pin-to-pin) | Compare → |
| TPS54302 | SOT-23-THIN-6 (DDC) | TPS54308 (pin-to-pin) · TPS62933 (function only, pinout differs) | Compare → |
| UC3842 | DIP-8 / SOIC-8 | UC3843 (pin-to-pin) · UC3844 (pin-to-pin) · UC3845 (pin-to-pin) · UC2842 (drop-in) | Compare → |
| ULN2003A | DIP-16 / SOIC-16 | ULN2004A (pin-to-pin) · MC1413 (drop-in) · KID65003AP (drop-in) · TD62003AP (drop-in) · ULN2803A (function only, pinout differs) | Compare → |
| USBLC6-2SC6 | SOT-23-6 | USBLC6-2SC6Y (drop-in) · CDSOT23-SRV05-4 (function only, pinout differs) · RCLAMP0504S (function only, pinout differs) · TPD2E009 (function only, pinout differs) | Compare → |
| W25Q128JVSIQ | SOIC-8 208mil | GD25Q128CSIG (drop-in) | Compare → |
| XL6009 | TO-263-5 / modules | LM2577 (function only, pinout differs) · XL6009 modules (market grade) (function only, pinout differs) | Compare → |
A substitute is a starting point, not a clearance: confirm the electrical ratings against your own schematic before a redesign. Where the datasheet does not support a mapping, no row is written — we would rather show a gap than a wrong substitute.