Class information for:
Level 1: HETEROJUNCTION BIPOLAR TRANSISTORS//HETEROJUNCTION BIPOLAR TRANSISTOR//HBT

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
1717 2441 14.1 63%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
1700 6150 HETEROJUNCTION BIPOLAR TRANSISTORS//HETEROJUNCTION BIPOLAR TRANSISTORS HBTS//HETEROJUNCTION BIPOLAR TRANSISTOR HBT

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 HETEROJUNCTION BIPOLAR TRANSISTORS Author keyword 51 32% 5% 129
2 HETEROJUNCTION BIPOLAR TRANSISTOR Author keyword 43 36% 4% 96
3 HBT Author keyword 36 22% 6% 146
4 HETEROJUNCTION BIPOLAR TRANSISTOR HBT Author keyword 29 30% 3% 82
5 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS Author keyword 27 38% 2% 57
6 POTENTIAL SPIKE Author keyword 27 76% 1% 19
7 BASE COLLECTOR CAPACITANCE Author keyword 21 90% 0% 9
8 BIPOLAR DEVICES Author keyword 17 36% 2% 38
9 INP INGAAS Author keyword 16 54% 1% 21
10 OFFSET VOLTAGE Author keyword 15 35% 1% 36

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 HETEROJUNCTION BIPOLAR TRANSISTORS 51 32% 5% 129 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS
2 HETEROJUNCTION BIPOLAR TRANSISTOR 43 36% 4% 96 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR Search HETEROJUNCTION+BIPOLAR+TRANSISTOR
3 HBT 36 22% 6% 146 Search HBT Search HBT
4 HETEROJUNCTION BIPOLAR TRANSISTOR HBT 29 30% 3% 82 Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT Search HETEROJUNCTION+BIPOLAR+TRANSISTOR+HBT
5 HETEROJUNCTION BIPOLAR TRANSISTORS HBTS 27 38% 2% 57 Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS Search HETEROJUNCTION+BIPOLAR+TRANSISTORS+HBTS
6 POTENTIAL SPIKE 27 76% 1% 19 Search POTENTIAL+SPIKE Search POTENTIAL+SPIKE
7 BASE COLLECTOR CAPACITANCE 21 90% 0% 9 Search BASE+COLLECTOR+CAPACITANCE Search BASE+COLLECTOR+CAPACITANCE
8 BIPOLAR DEVICES 17 36% 2% 38 Search BIPOLAR+DEVICES Search BIPOLAR+DEVICES
9 INP INGAAS 16 54% 1% 21 Search INP+INGAAS Search INP+INGAAS
10 OFFSET VOLTAGE 15 35% 1% 36 Search OFFSET+VOLTAGE Search OFFSET+VOLTAGE

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 HETEROJUNCTION BIPOLAR TRANSISTORS 147 33% 15% 366
2 HBTS 133 45% 9% 221
3 CURRENT GAIN 97 54% 5% 125
4 OFFSET VOLTAGE 85 79% 2% 55
5 SURFACE RECOMBINATION CURRENT 49 94% 1% 17
6 ALGAAS GAAS HBTS 28 57% 1% 33
7 DHBTS 22 66% 1% 21
8 HBT 21 38% 2% 44
9 DC CHARACTERISTICS 21 73% 1% 16
10 ALGAAS GAAS 19 37% 2% 42

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
GAAS HBTS FOR MICROWAVE INTEGRATED-CIRCUITS 1993 16 50 80%
Performance enhancement of a heterojunction bipolar transistor (HBT) by two-step passivation 2006 0 8 88%
Reliability issues in III-V compound semiconductor devices: optical devices and GaAs-based HBTs 1999 20 22 18%
Reliability of III-V based heterojunction bipolar transistors 1998 1 33 67%
EARLY VOLTAGE IN HETEROJUNCTION BIPOLAR-TRANSISTORS - QUANTUM TUNNELING AND BASE RECOMBINATION EFFECTS 1995 2 9 56%
SEMICONDUCTOR HETEROJUNCTION TOPICS - INTRODUCTION AND OVERVIEW 1986 45 102 11%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 CSDL 7 50% 0.4% 10
2 INP IC TEAM 6 100% 0.2% 4
3 WIDE BAND G SEMICOND MAT DEVICES CHIN 4 75% 0.1% 3
4 NANOTECHNOL RD 3 30% 0.3% 7
5 QNERC 2 67% 0.1% 2
6 RF OEICS 2 67% 0.1% 2
7 ULTRA HIGH SPEED COMMUN IC TEAM 2 67% 0.1% 2
8 MICROWAVE PLICAT 2 21% 0.3% 8
9 MICROWAVE IC 2 43% 0.1% 3
10 MICROELECT IXL 2 33% 0.2% 4

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000232954 CARBON DOPING//CBR4//C DOPED GAAS
2 0.0000201095 A AMA MICROELECT SCI TECHNOL//SIGEHBT//SIGE HBT
3 0.0000110989 P INGAN//GAN SIC HETEROJUNCTION//COMMON EMITTER
4 0.0000092761 HETEROJUNCTION PHOTOTRANSISTOR HPT//HETEROJUNCTION PHOTOTRANSISTOR//OPTICALLY CONTROLLED MESFET
5 0.0000090910 DECISION CIRCUITS//DEMULTIPLEXING EQUIPMENT//MIKROELEKT ZENTRUM A
6 0.0000075570 TRANSISTOR LASER//TRANSISTOR LASER TL//MICRONANOSYST TECHNOL
7 0.0000071894 BACKWARD DIODES//MILLIMETER WAVE DETECTORS//BULK BARRIER DIODES
8 0.0000058938 OPTOELECTRONIC INTEGRATED DEVICE//OPTICAL FUNCTIONAL DEVICE//LIGHT EMITTING THYRISTOR
9 0.0000048255 PHOTON RECYCLING//SEMICONDUCTOR SCINTILLATORS//FSF
10 0.0000046518 CD4GESE6//ELECTRICITY PROPERTIES//ELECTROCHEMICAL C V PROFILING