2SK494 Silicon N-Channel Junction FET Application Low frequency / High frequency amplifier Outline SPAK 1 23 1. Drain 2. Gate 3. Source 2SK494 Absolute Maximum Ratings (Ta = 25°C) Item Symbol Ratings Unit Drain to source voltage VDS 22 V Gate to source voltage VGSO –22 V Drain current ID 100 mA Gate current IG 10 mA Channel power dissipation Pch 300 mW Channel temperature Tch 150 °C Storage temperature Tstg –55 to +150 °C Electrical Characteristics (Ta = 25°C) Item Symbol Min Typ Max Unit Test conditions Gate to source breakdown voltage V(BR)GSS –22 — — V I G = –10 µA, VDS = 0 Gate cutoff current I GSS — — –10 nA VGS = –15 V, VDS = 0 Gate to source cutoff voltage VGS(off) — — –2.5 V VDS = 5 V, ID = 10 µA 6 — 40 mA VDS = 5 V, VGS = 0, Pulse test y fs 20 — — mS VDS = 5 V, ID = 10 mA, f = 1 kHz Input capacitance Ciss — 9.0 11.0 pF VDS = 5 V, VGS = 0, f = 1 MHz Reverse transfer capacitance Crss — 2.8 4.0 pF VDS = 5 V, VGS = 0, f = 1 MHz Noise figure NF — 0.5 3.0 dB VDS = 5 V, ID = 1 mA, f = 1 kHz, Rg = 1 kΩ Drain current I DSS* Forward transfer admittance Note: 1 1. The 2SK494 is grouped by I DSS as follows. Grade B C D E I DSS 6 to 14 12 to 22 18 to 30 26 to 40 See character curves 2SK435. 2 2SK494 Channel Power Dissipation Pch (mW) Maximum Channel Dissipation Curve 300 200 100 0 50 100 150 Ambient Temperature Ta (°C) 3 Unit: mm 2.2 Max 0.6 0.6 Max 0.45 ± 0.1 14.5 Min 1.8 Max 3.2 Max 4.2 Max 0.4 ± 0.1 1.27 1.27 2.54 Hitachi Code JEDEC EIAJ Weight (reference value) SPAK — — 0.10 g Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. 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