SMD transistor codes
The codes in our tables printed on NPN, PNP, digital, RF and Darlington transistors: 633 codes in all. Each row names the transistors with that code; the code's own page lists every part that carries it.
Reading a transistor code
A transistor in SOT-23 or SOT-323 has no room for its part number, so the maker prints a code of one to four characters and gives its meaning in the datasheet. Codes are not standardised: makers reuse a code for unrelated parts, which is why many codes here list several. A small letter after the code is often the maker's date or factory letter, not part of the code.
Testing a transistor with a multimeter
Use the diode range, with the part lifted or its base leg off the pad. On an NPN, the red probe on the base reads about 0.6 to 0.75 V to the emitter and to the collector, and open the other way round; on a PNP, the black probe on the base does. Collector to emitter reads open both ways, and near 0 V both ways is a short, the commonest failure. A digital transistor has resistors built in, so test it on the ohms range.
How to identify an SMD component, from the code to the meter
Transistor codes and their parts
| Code | Printed on |
|---|---|
| 01 | PDTA143ET, PDTA143EU Packages: SOT-23 · SOT-323 |
| 02 | PDTC143ET, PDTC143EU Packages: SOT-23 · SOT-323 |
| 03 | DTC143TCA, DTC143TE, DTC143TE3, DTC143TEB and 7 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 04 | DTC114TCA, DTC114TE, DTC114TE3, DTC114TEB and 6 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 05 | DTC124TCA, PDTA124ET, PDTA124EU Packages: SOT-23 · SOT-323 |
| 06 | DTC144TCA, DTC144TE, DTC144TM, DTC144TUA and 1 more Packages: SOT-323 · SOT-23 · SOT-723 |
| 07 | PDTA144ET, PDTA144EU Packages: SOT-23 · SOT-323 |
| 08 | PDTC144ET, PDTC144EU Packages: SOT-23 · SOT-323 |
| 09 | PDTC114EU Packages: SOT-323 |
| 1 | DI4041N Packages: SOT-89 |
| 1013 | 2SA1013 Packages: SOT-89 |
| 111 | DTA113ZU3, DTA113ZUB Packages: SOT-323 |
| 1116 | 2SB1116 Packages: SOT-23 |
| 113 | DTA143ZU3, DTA143ZUA, DTA143ZUB Packages: SOT-323 |
| 12 | DTA123EE3, DTA123EEB, DTA123EKA, DTA123EM and 2 more Packages: SOT-323 · SOT-416 · SOT-23 · SOT-723 |
| 121 | DTC113ZU3, DTC113ZUB Packages: SOT-323 |
| 123 | DTC143ZU3, DTC143ZUA, DTC143ZUB, STD123S Packages: SOT-323 · SOT-23 |
| 13 | BC847BPN, BC847BVN, DTA143ECA, DTA143EE and 8 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-363 +2 |
| 132 | DTA123JU3, DTA123JUA, DTA123JUB Packages: SOT-323 |
| 14 | DTA114ECA, DTA114EE, DTA114EE3, DTA114EEB and 6 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 142 | DTC123JU3, DTC123JUB Packages: SOT-323 |
| 15 | DTA124EE3, DTA124EEB, DTA124EKA, DTA124EM and 4 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 16 | DTA144ECA, DTA144EE, DTA144EE3, DTA144EEB and 7 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 1616A | 2SD1616A Packages: SOT-89 |
| 16A | MMBT1616A Packages: SOT-23 |
| 17 | PDTC124ET Packages: SOT-23 |
| 18 | PDTC143ZT, PDTC144VU Packages: SOT-23 · SOT-323 |
| 19 | DTA115ECA, DTA115EE3, DTA115EEB, DTA115EKA and 5 more Packages: SOT-23 · SOT-323 · SOT-416 · SOT-723 |
| 1A | BC846A, BC846AT, BC846AW, MMBT3904 and 4 more Packages: SOT-23 · SOT-323 · SOT-89 · SOT-416 |
| 1AM | MMBT3904, MMBT3904H Packages: SOT-23 |
| 1AS | IMZ1AS, IMZ1AS-AU |
| 1B | BC817UPN, BC846B, BC846BH, BC846BT and 4 more Packages: SOT-23 · SOT-323 · SOT-363 · SOT-416 |
| 1C | BC846C, BC846CW, BC847S, BC847SH Packages: SOT-363 · SOT-23 · SOT-323 |
| 1D | BC846, BC846S, BC846W, MMBTA42 and 2 more Packages: SOT-23 · SOT-323 |
| 1E | BC847A, BC847AW, BC848A, BC848AW and 4 more Packages: SOT-23 · SOT-323 |
| 1F | BC847B, BC847BH, BC847BS, BC847BV and 9 more Packages: SOT-23 · SOT-323 · SOT-363 · SOT-563 |
| 1G | BC847C, BC847CH, BC847CW, BC847CWH and 9 more Packages: SOT-23 · SOT-323 |
| 1GM | MMBTA06, MMSTA06 Packages: SOT-23 · SOT-323 |
| 1H | BC847, BC847W, MMBTA05 Packages: SOT-23 · SOT-323 |
| 1J | BC848A, BCV61A, PMBT2369 Packages: SOT-23 · SOT-143 |
| 1K | BC846PN, BC847PN, BC848B, BC848BW and 2 more Packages: SOT-23 · SOT-363 · SOT-143 · SOT-323 |
| 1L | BC848C, BC848CW, BCV61C, PMBT6429 Packages: SOT-23 · SOT-143 · SOT-323 |
| 1M | BC846T, BC848W, BCM846S, BCV61 and 3 more Packages: SOT-23 · SOT-143 · SOT-323 · SOT-416 |
| 1N | MMBT3904M, MMBT3904T, MMBTA14, PMBTA14 and 1 more Packages: SOT-23 · SOT-723 |
| 1O | BC846PN |
| 1P | BC847PN, MMBT2222A, MMBT2222AH, MMBT2222AM and 3 more Packages: SOT-23 · SOT-723 |
| 1Z | BC846 |
| 20 | PDTC144WT, PDTC144WU Packages: SOT-23 · SOT-323 |
| 2045 | CJ2045 Packages: SOT-23-6 |
| 21 | PDTA123ET Packages: SOT-23 |
| 22 | DTC123ECA, DTC123EE, DTC123EE3, DTC123EEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 23 | DTC143ECA, DTC143EE, DTC143EE3, DTC143EEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 2383 | 2SC2383 Packages: SOT-89 |
| 24 | DTC114ECA, DTC114EE, DTC114EE3, DTC114EEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 241 | 2SC2411K-AU Packages: SOT-23 |
| 25 | DTC124ECA, DTC124EE, DTC124EE3, DTC124EEB and 6 more Packages: SOT-23 · SOT-323 · SOT-416 · SOT-723 |
| 253P | CJZ253PL |
| 25C | BC817DPN-25 |
| 26 | DTC144ECA, DTC144EE, DTC144EE3, DTC144EEB and 6 more Packages: SOT-23 · SOT-323 · SOT-416 · SOT-723 |
| 27 | PDTC114YT Packages: SOT-23 |
| 29 | DTC115EE, DTC115EE3, DTC115EEB, DTC115EKA and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 2A | MMBT3906, MMBT3906H, PMBT3906, PMST3906 and 1 more Packages: SOT-23 · SOT-323 |
| 2B | BC849B, BC849BW, PMBT2907 Packages: SOT-23 · SOT-323 |
| 2C | BC848S, BC849C Packages: SOT-23 · SOT-363 |
| 2D | MMBTA92, PMBTA92, SMBTA92 Packages: SOT-23 |
| 2F | BC850B, MMBT2907A, MMBT2907AH, MMBT2907AT and 3 more Packages: SOT-23 · SOT-323 |
| 2G | BC850C, MMBTA56, PMBTA56, SMBTA56 Packages: SOT-23 |
| 2GM | MMBTA56 Packages: SOT-23 |
| 2H | MMBTA55, PBSS5140T, PUMH2 Packages: SOT-23 · SOT-363 |
| 2L | MMBT5401 Packages: SOT-23 |
| 2P | SMBTA06UPN |
| 2Q | SMBT5087 |
| 2T | MMBT4403, PMBT4403, PMST4403 Packages: SOT-23 · SOT-323 |
| 2T1 | S9012, S9012W Packages: SOT-23 · SOT-323 |
| 2TY | S8550 Packages: SOT-23 |
| 2V | PMBTA64, SMBTA64 Packages: SOT-23 |
| 2X | MMBT4401, PMBT4401, PMST4401 Packages: SOT-23 · SOT-323 |
| 30 | PDTC114YU Packages: SOT-323 |
| 303PL | CJ303PL Packages: SOT-89 |
| 31 | PDTA143XT, PUMD13 Packages: SOT-23 · SOT-363 |
| 32 | PDTC143XT Packages: SOT-23 |
| 33 | DTA143XCA, DTA143XE, DTA143XE3, DTA143XEB and 5 more Packages: SOT-323 · SOT-416 · SOT-23 · SOT-723 |
| 35 | DTA124XE, DTA124XE3, DTA124XEB, DTA124XKA and 3 more Packages: SOT-323 · SOT-416 · SOT-23 · SOT-723 |
| 3A | BC856, BC856A, BC856AW, BCM847BV Packages: SOT-23 · SOT-323 · SOT-563 |
| 3B | BC856B, BC856BH, BC856BW, BC856BWH and 2 more Packages: SOT-23 · SOT-323 · SOT-363 · SOT-563 |
| 3C | BC857S, BC857SH Packages: SOT-363 |
| 3D | BC856, BC856S, MMBTA44 Packages: SOT-23 |
| 3E | BC857A, BC857AW, BC858A, BC858AW and 2 more Packages: SOT-23 · SOT-323 |
| 3EM | MMBTH10 Packages: SOT-23 |
| 3F | BC857B, BC857BH, BC857BS, BC857BV and 8 more Packages: SOT-23 · SOT-323 · SOT-363 · SOT-563 |
| 3G | BC857C, BC857CH, BC857CW, BC858C and 4 more Packages: SOT-23 · SOT-323 |
| 3H | BC857, BC857WH Packages: SOT-23 · SOT-323 |
| 3J | BC858A, BCV62A Packages: SOT-23 · SOT-143 |
| 3K | BC858B, BCV62B Packages: SOT-23 · SOT-143 |
| 3L | BC858C, BCV62C Packages: SOT-23 · SOT-143 |
| 3M | BCM856S, BCV62 Packages: SOT-143 |
| 3N | MMBT3906M, MMBT3906T Packages: SOT-723 |
| 3P | SMBT3904PN |
| 3SS | MMBTA28 Packages: SOT-23 |
| 42 | PDTA123EU Packages: SOT-323 |
| 43 | DTC143XCA, DTC143XE, DTC143XE3, DTC143XEB and 5 more Packages: SOT-323 · SOT-416 · SOT-23 · SOT-723 |
| 44 | PDTA124XU, PDTC115ET Packages: SOT-23 · SOT-323 |
| 449 | FMMT449 Packages: SOT-23 |
| 45 | DTC124XE3, DTC124XEB, DTC124XKA, DTC124XM and 2 more Packages: SOT-323 · SOT-416 · SOT-23 · SOT-723 |
| 46 | PDTA143XU, PDTC124XT Packages: SOT-23 · SOT-323 |
| 46A | BC846A, BC846A-AU, BC846AS, BC846AS-AU and 2 more Packages: SOT-23 · SOT-323 · SOT-363 |
| 46B | BC846B, BC846B-AU, BC846BW, BC846BW-AU Packages: SOT-23 · SOT-323 |
| 46N | BC846APN Packages: SOT-363 |
| 46P | BC846BPN, BC846BPN-AU Packages: SOT-363 |
| 46S | BC846BS, BC846BS-AU Packages: SOT-363 |
| 47 | PDTA124XT, PDTA143ZU Packages: SOT-23 · SOT-323 |
| 47A | BC847A, BC847A-AU, BC847AS, BC847AS-AU and 2 more Packages: SOT-23 · SOT-323 · SOT-363 |
| 47B | BC847B, BC847B-AU, BC847BW, BC847BW-AU Packages: SOT-23 · SOT-323 |
| 47C | BC847C, BC847C-AU, BC847CW, BC847CW-AU Packages: SOT-23 · SOT-323 |
| 47P | BC847BPN, BC847BPN-AU, BC847BPNTB6 Packages: SOT-363 · SOT-563 |
| 47S | BC847BS, BC847BS-AU Packages: SOT-363 |
| 48 | PDTC123EU, PUMD48 Packages: SOT-323 · SOT-363 |
| 48A | BC848A, BC848A-AU, BC848AW, BC848AW-AU Packages: SOT-23 · SOT-323 |
| 48B | BC848B, BC848B-AU, BC848BW Packages: SOT-23 · SOT-323 |
| 48C | BC848C, BC848C-AU, BC848CW, BC848CW-AU Packages: SOT-23 · SOT-323 |
| 49 | PDTC123JU Packages: SOT-323 |
| 491 | FMMT491, ZUMT491 Packages: SOT-23 · SOT-323 |
| 493 | FMMT493 Packages: SOT-23 |
| 495 | FMMT495 Packages: SOT-23 |
| 49B | BC849B, BC849B-AU, BC849BW, BC849BW-AU Packages: SOT-23 · SOT-323 |
| 49C | BC849C, BC849C-AU, BC849CW, BC849CW-AU Packages: SOT-23 · SOT-323 |
| 4A | BC859A |
| 4B | BC859B, PBSS8110X Packages: SOT-23 · SOT-89 |
| 4C | BC859C, PBSS9110X Packages: SOT-23 · SOT-89 |
| 4C7 | BC847CPN, BC847CPN-AU Packages: SOT-363 |
| 4D | MMBTA94 Packages: SOT-23 |
| 4E | MMBT3904TB |
| 4F | BC846S, BC860B Packages: SOT-23 · SOT-363 |
| 4Ft | BC846BSH, BC846S, BCM846BS Packages: SOT-363 |
| 4G | BC859C, BC860C Packages: SOT-23 |
| 50B | BC850B, BC850B-AU, BC850BW, BC850BW-AU Packages: SOT-23 · SOT-323 |
| 50C | BC850C, BC850C-AU, BC850CW, BC850CW-AU Packages: SOT-23 · SOT-323 |
| 51 | PDTC124XU Packages: SOT-323 |
| 52 | DTA123YCA, DTA123YE3, DTA123YEB, DTA123YKA and 4 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 53 | PDTC143XU Packages: SOT-323 |
| 5343 | 2SC5343 Packages: SOT-23 |
| 5345 | 2SC5345 Packages: SOT-23 |
| 54 | DTA114YCA, DTA114YE, DTA114YE3, DTA114YEB and 6 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 5401 | CXT5401 Packages: SOT-89 |
| 55 | PDTA114YU Packages: SOT-323 |
| 5551S | DMMT5551S Packages: SOT-23-6 |
| 56A | BC856A, BC856A-AU, BC856AW Packages: SOT-23 · SOT-323 |
| 56B | BC856B, BC856B-AU, BC856BW, BC856BW-AU Packages: SOT-23 · SOT-323 |
| 56S | BC856BS, BC856BS-AU Packages: SOT-363 |
| 57A | BC857A, BC857A-AU, BC857AW, BC857AW-AU Packages: SOT-23 · SOT-323 |
| 57B | BC857B, BC857B-AU, BC857BW, BC857BW-AU Packages: SOT-23 · SOT-323 |
| 57C | BC857C, BC857C-AU, BC857CS, BC857CS-AU and 2 more Packages: SOT-23 · SOT-323 · SOT-363 |
| 57S | BC857BS, BC857BS-AU Packages: SOT-363 |
| 589 | MMBT589 Packages: SOT-23 |
| 58A | BC858A, BC858A-AU, BC858AW Packages: SOT-23 · SOT-323 |
| 58B | BC858B, BC858B-AU, BC858BW Packages: SOT-23 · SOT-323 |
| 58C | BC858C, BC858C-AU, BC858CW Packages: SOT-23 · SOT-323 |
| 591 | FMMT591 Packages: SOT-23 |
| 593 | FMMT593 Packages: SOT-23 |
| 59B | BC859B, BC859B-AU, BC859BW Packages: SOT-23 · SOT-323 |
| 59C | BC859C, BC859C-AU Packages: SOT-23 |
| 5A | BC807-16, BC807-16W Packages: SOT-23 · SOT-323 |
| 5B | BC807-25, BC807-25H, BC807-25W, BC807-25WH and 2 more Packages: SOT-23 · SOT-323 · SOT-89 |
| 5C | BC807-40, BC807-40H, BC807-40W, BC807-40WH Packages: SOT-23 · SOT-323 |
| 5CR | BC807-16, BC807-16W Packages: SOT-23 · SOT-323 |
| 5CS | BC807-25W, BC807-25W-AQ Packages: SOT-323 |
| 5CT | BC807-40W, BC807-40W-AQ, BC807K-40 Packages: SOT-323 · SOT-23 |
| 5D | BC807, BC807W, PBSS303NX Packages: SOT-23 · SOT-89 · SOT-323 |
| 5F | BC808-25, BC856S Packages: SOT-363 |
| 5Ft | BC856BSH Packages: SOT-363 |
| 5G | BC808-40 |
| 5H | PBSS301PX Packages: SOT-89 |
| 5K | PBSS303PX Packages: SOT-89 |
| 606NL | CJA606NL, CJZ606NL Packages: SOT-89 · SOT-223 |
| 606PL | CJA606PL, CJZ606PL Packages: SOT-89 · SOT-223 |
| 618 | FMMT618 Packages: SOT-23 |
| 619 | FMMT619 Packages: SOT-23 |
| 62 | DTC123YCA, DTC123YE, DTC123YE3, DTC123YEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 64 | DTC114YCA, DTC114YE, DTC114YE3, DTC114YEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 6A | BC817-16, BC817-16W Packages: SOT-23 · SOT-323 |
| 6B | BC817-25, BC817-25H, BC817-25W, BC817-25WH and 1 more Packages: SOT-23 · SOT-323 |
| 6C | BC817, BC817-40, BC817-40H, BC817-40W and 1 more Packages: SOT-23 · SOT-323 |
| 6CR | BC817-16-AQ, BC817-16W Packages: SOT-23 · SOT-323 |
| 6CS | BC817-25W Packages: SOT-323 |
| 6CT | BC817-40W Packages: SOT-323 |
| 6D | BC817, BC817W Packages: SOT-23 · SOT-323 |
| 6E | BC818-16W |
| 6F | BC818-25 |
| 6G | BC818-40 |
| 718 | FMMT718 Packages: SOT-23 |
| 720 | FMMT720 Packages: SOT-23 |
| 7A | BC807-16, BC807-16-AU, MMBT3904 Packages: SOT-23 |
| 7B | BC807-25, BC807-25-AU, MMBT3906 Packages: SOT-23 |
| 7C | BC807-40, BC807-40-AU, PDTA115EU Packages: SOT-23 · SOT-323 |
| 7S | BC807-16W-AU Packages: SOT-323 |
| 7V | BC807-25W-AU Packages: SOT-323 |
| 7W | BC807-40W-AU Packages: SOT-323 |
| 805 | PBHV8050SA Packages: SOT-23 |
| 811 | PBHV8110DA, PBHV8110DA-AU Packages: SOT-23 |
| 8110DW | PBHV8110DW Packages: SOT-223 |
| 811D | PBHV8110DH, PBHV8110DH-AU Packages: SOT-89 |
| 818B | CJ818B Packages: SOT-23-6 |
| 818C | CJL818C Packages: SOT-23-6 |
| 84 | DTC114WCA, DTC114WM, DTC114WUA Packages: SOT-23 · SOT-323 · SOT-723 |
| 8A | BC817-16, BC817-16-AU Packages: SOT-23 |
| 8B | BC817-25, BC817-25-AU Packages: SOT-23 |
| 8C | BC817-40, BC817-40-AU Packages: SOT-23 |
| 8DS | BC817DS-25 |
| 8PN | BC817DPN, BC817DPN-AU Packages: SOT-23 |
| 8S | BC817-16W, BC817-16W-AU Packages: SOT-323 |
| 8V | BC817-25W, BC817-25W-AU Packages: SOT-323 |
| 8W | BC817-40W, BC817-40W-AU Packages: SOT-323 |
| 911 | PBHV9110DA-AU Packages: SOT-23 |
| 9110DW | BCP53-16-AU Packages: SOT-223 |
| 911D | BCX53-16-AU Packages: SOT-89 |
| 93 | DTA143TCA, DTA143TE, DTA143TE3, DTA143TEB and 5 more Packages: SOT-323 · SOT-23 · SOT-416 · SOT-723 |
| 94 | DTA114TCA, DTA114TE, DTA114TE3, DTA114TEB and 4 more Packages: SOT-23 · SOT-323 · SOT-416 · SOT-723 |
| 96 | DTA144TE, DTA144TUA Packages: SOT-323 |
| 99 | DTA115TE, DTA115TM Packages: SOT-723 |
| A11 | UMA11N Packages: SOT-353 |
| A3 | UMA3N Packages: SOT-353 |
| A42 | MMBTA42, MMBTA42-AU Packages: SOT-23 |
| A44 | MMBTA44 Packages: SOT-23 |
| A4W | MMBTA42W Packages: SOT-323 |
| A5 | UMA5N Packages: SOT-353 |
| A554 | 2SA554 Packages: SOT-89 |
| A8 | MMDT5210W, TSA884CX Packages: SOT-23 · SOT-323 |
| A9 | BCM857BS, MMDT521NW Packages: SOT-323 · SOT-363 |
| A92 | MMBTA92, MMBTA92-AU Packages: SOT-23 |
| A9W | MMBTA92W Packages: SOT-323 |
| AA | BCW60A, BCX51, PDTC144VT Packages: SOT-23 · SOT-89 |
| AB | BCW60B, BFP460, BFR460L3, BFS460L6 and 2 more Packages: SOT-23 · SOT-323 |
| ABX | MMBTA43 Packages: SOT-23 |
| AC | BCW60C, BCX51-10, BFP620F, BFS466L6 and 2 more Packages: SOT-23 · SOT-89 · SOT-323 · SOT-883 |
| ACO | 2SA1313 Packages: SOT-23 |
| ACY | 2SA1313 Packages: SOT-23 |
| AD | BCW60D, BCX51-16, BFS469L6, MMBT3906FN3 and 2 more Packages: SOT-23 · SOT-89 · SOT-323 · SOT-883 |
| AE | BC847BFN3, BCX52, MMDT5114W Packages: SOT-89 · SOT-323 · SOT-883 |
| AF | BCW60FF |
| AG | BCX52-10, BCX70G Packages: SOT-23 · SOT-89 |
| AH | BCX53, BCX70H Packages: SOT-23 · SOT-89 |
| AJ | BCX70J Packages: SOT-23 |
| AK | 2SA1740, BCW60, BCX53-10, BCX70K Packages: SOT-89 · SOT-23 |
| AL | BCX53-16, BFP405, PDTC123YT Packages: SOT-23 · SOT-89 |
| AM | BCX52-16, BFP420, PDTA113ZT Packages: SOT-23 · SOT-89 |
| AN | BCW60FN, BFP450 |
| AP | BFP520 |
| AR4 | BSR43 Packages: SOT-89 |
| AT | BFP540 |
| B0 | PUMB10 Packages: SOT-363 |