BAS70 Low capacitance, low series inductance and resistance Schottky diodes Features ■ ■ ■ ■ ■ ■ BAS70ZFILM (Single) Very low conduction losses Negligible switching losses Low forward and reverse recovery times Surface mount device Low capacitance diode Low resistance and inductance SOD-123 BAS70JFILM (Single) SOD-323 BAS70KFILM (Single) Description SOD-523 BAS70FILM (Single) The BAS70 series uses 70 V Schottky barrier diodes packaged in SOD-123, SOD-323, SOD523, SOT-23, SOT-323, SOT-323-6L or SOT-666. These diodes are specially suited for signal detection and temperature compensation in RF applications. SOT-23 BAS70-04FILM (Series) BAS70-05FILM (Common cathode) BAS70-06FILM (Common anode) BAS70WFILM (Single) SOT-323 BAS70-04WFILM (Series) BAS70-05WFILM (Common cathode) BAS70-06WFILM (Common anode) BAS70-08SFILM (3 parallel diodes) Table 1. Device summary SOT-323-6L Symbol Value IF 70 mA VRRM 70 V C (max) 2 pF Tj (max) 150 °C October 2009 BAS70-07P6FILM (2 parallel diodes) SOT-666 BAS70-09P6FILM (2 opposite diodes) Configurations in top view Doc ID 12563 Rev 2 1/14 www.st.com 14 Characteristics 1 BAS70 Characteristics Table 2. Absolute ratings (limiting values at Tj = 25 °C, unless otherwise specified) Symbol Value Unit Repetitive peak reverse voltage 70 V Continuous forward current 70 mA IFSM Surge non repetitive forward current tp = 10 ms Sinusoidal 1 A Tstg Storage temperature range - 65 to +150 °C VRRM IF Parameter Tj Maximum operating junction temperature 150 °C TL Maximum soldering temperature 260 °C Value Unit Table 3. Thermal parameters Symbol Rth(j-a) Parameter Junction to ambient(1) SOD-123, SOT-23 500 SOT-323, SOD-323 550 SOD-523, SOT-666 600 °C/W 1. Epoxy printed circuit board with recommended pad layout Table 4. Static electrical characteristics Symbol Parameter IR(1) Reverse leakage current VF(2) Forward voltage drop Test conditions Tj = 25 °C Tj = 25 °C Min. Typ. Max. Unit VR = 50 V 100 nA VR = 70 V 10 µA IF = 1 mA 410 IF = 10 mA 750 IF = 15 mA 1000 mV 1. Pulse test: tp = 5 ms, δ < 2 % 2. Pulse test: tp = 380 µs, δ < 2 % Table 5. Symbol 2/14 Dynamic characteristics Parameter Test conditions C Diode capacitance VR = 0 V, F = 1 MHz RF Differential forward resistance IF = 10 mA, F = 100 MHz LS Series inductance Doc ID 12563 Rev 2 Min. Typ. Max. Unit 2 pF 30 Ω 1.5 nH BAS70 Characteristics Figure 1. Average forward power dissipation Figure 2. versus average forward current Average forward current versus ambient temperature (δ = 1) IF(AV)(A) P(W) 0.08 0.14 d=0.05 d=0.2 d=0.1 d=0.5 d=1 0.07 0.12 0.06 0.10 0.05 0.08 0.04 0.06 0.03 T T 0.04 0.02 0.02 0.01 tp d=tp/T IF(AV)(A) tp d=tp/T T amb (°C) 0.00 0.00 0.00 0.01 Figure 3. 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 Reverse leakage current versus reverse applied voltage (typical values) IR(µA) 0 25 Figure 4. 75 100 125 150 Reverse leakage current versus junction temperature (typical values) IR(µA) 1.E+02 1.E+02 50 VR=50 V Tj=150 °C 1.E+01 1.E+01 1.E+00 Tj=85 °C 1.E+00 1.E-01 1.E-01 1.E-02 Tj=25 °C Tj(°C) VR(V) 1.E-03 0 Figure 5. 10 20 30 40 1.E-02 50 60 0 70 Junction capacitance versus reverse applied voltage (typical values) Figure 6. 25 50 75 100 125 150 Forward voltage drop versus forward current (typical values) IFM(mA) C(pF) 10.0 1.E+02 F=1 MHz VOSC=30 mVRMS Tj=25 °C Tj=150 °C 1.E+01 1.0 Tj=-40 °C 1.E+00 Tj=85°C VFM(V) VR(V) 0.1 0.1 1.0 1.E-01 10.0 100.0 0.0 Doc ID 12563 Rev 2 0.5 1.0 1.5 2.0 2.5 3.0 3.5 3/14 Characteristics Figure 7. 1.E+02 BAS70 Forward voltage drop versus forward current (typical values) Figure 8. IFM(mA) 1000 Differential forward resistance versus forward current (typical values) RF (Ω) F=100 MHz Tj=25 °C Tj=125 °C Tj=25 °C 1.E+01 100 1.E+00 VFM(V) 1.E-01 Figure 9. 1000 IF(mA) 10 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Relative variation of thermal impedance junction to ambient versus pulse duration 0.1 1.0 10.0 Figure 10. Relative variation of thermal impedance junction to ambient versus pulse duration Zth(j-a) /Rth(j-a) Zth(j-a) (°C/W) 1.00 printed circuit board, epoxy FR4 eCU = 35 µm SOT-323-6L Single pulse SOT-23 Single pulse SOT-323-6L 100 10 1.E-02 tP(s) 1.E-01 1.E+00 1.E+01 1.E+02 Figure 11. Relative variation of thermal impedance junction to ambient versus pulse duration 1.00 Aluminesubstrate 10 x 8 x 0.5 mm 0.10 alluminium oxide substrate 10 x 8 x 0.5 mm SOT-23 0.01 1.E-02 1.E-01 1.E+00 1.E+01 Zth(j-a) /Rth(j-a) Zth(j-a) /Rth(j-a) 1.00 Single pulse SOT-666 EpoxyFR4 SCU=2.25 mm² eCU=35 µm printed circuit board, epoxy FR4 eCU = 35 µm SOD-323 0.01 1.E-02 1.E-01 1.E+00 1.E+01 4/14 1.E+02 Figure 12. Relative variation of thermal impedance junction to ambient versus pulse duration Single pulse SOD-323 0.10 tP(s) 0.10 tP(s) 1.E+02 printed circuit board, epoxy FR4 eCU = 35 µm SOT-666 0.01 1.E-03 1.E-02 1.E-01 1.E+00 Doc ID 12563 Rev 2 Epoxy FR4 eCU=35 µm tP(s) 1.E+01 BAS70 Ordering information scheme Figure 13. Relative variation of thermal impedance junction to ambient versus pulse duration Figure 14. Thermal impedance junction to ambient versus copper surface under each lead Zth(j-a) /Rth(j-a) Rth(j-a) (°C/W) 600 1.00 printed circuit board, epoxy FR4 eCU = 35 µm SOD-323 Single pulse SOD-523 550 EpoxyFR4 eCU=35 µm 0.10 500 450 400 0.01 350 printed circuit board, epoxy FR4 eCU = 35 µm SOD-523 0.00 1.E-03 2 1.E-02 1.E-01 1.E+00 tP(s) 1.E+01 SCU(mm²) 300 0 5 10 15 20 25 30 35 40 45 50 Ordering information scheme Figure 15. Ordering information scheme BAS70 xx xx FILM Signal Schottky diodes VRRM = 70 V Configuration No letter = Single diode 04 = Series diodes 05 = Common cathode 06 = Common anode 07 = 2 Parallel diodes 08 = 3 Parallel diodes 09 = 2 Opposite diodes Package Blank = SOT-23 J = SOD-323 W = SOT-323 K = SOD-523 P6 = SOT-666 S = SOT323-6L Z = SOD-123 Packing FILM = Tape and reel Doc ID 12563 Rev 2 5/14 Package information 3 BAS70 Package information ● Epoxy meets UL94, V0 ● Lead-free packages In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 6. SOD-123 dimensions Dimensions Ref. H Millimeters Inches A2 A1 Min. b A E D A Max. Min. 1.45 Max. 0.057 A1 0 0.1 0 0.004 A2 0.85 1.35 0.033 0.053 c b 0.55 Typ. 0.022 Typ. c 0.15 Typ. 0.039 Typ. D 2.55 2.85 0.1 0.112 E 1.4 1.7 0.055 0.067 G 0.25 H 3.55 G 0.01 3.95 Figure 16. SOD-123 footprint (dimensions in mm) 4.45 0.65 0.97 6/14 2.51 Doc ID 12563 Rev 2 0.97 0.14 0.156 BAS70 Package information Table 7. SOD-323 dimensions Dimensions H A1 Ref. b Millimeters Min. E A A D c Q1 L Max. Inches Min. 1.17 Max. 0.046 A1 0 0.1 0 0.004 b 0.25 0.44 0.01 0.017 c 0.1 0.25 0.004 0.01 D 1.52 1.8 0.06 0.071 E 1.11 1.45 0.044 0.057 H 2.3 2.7 0.09 0.106 L 0.1 0.46 0.004 0.02 Q1 0.1 0.41 0.004 0.016 Figure 17. SOD-323 footprint (dimensions in mm) 3.20 0.54 1.06 1.08 1.06 Doc ID 12563 Rev 2 7/14 Package information Table 8. BAS70 SOD-523 dimensions Dimensions E Ref. 0.15 M C A B E1 B D 2xb 0.20 M C A B Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 0.50 0.60 0.70 0.020 0.024 0.028 E 1.50 1.60 1.70 0.059 0.063 0.067 E1 1.10 1.20 1.30 0.043 0.047 0.051 D 0.70 0.80 0.90 0.028 0.031 0.035 b 0.25 0.35 0.010 0.014 c 0.07 0.20 0.003 0.008 L 0.15 0.25 0.006 0.008 0.010 L1 0.05 0.20 0.002 A 8° R0.1 A c SEATING PLANE C 7° L L1 Figure 18. SOD-523 footprint (dimensions in mm) 0.7 0.3 2 8/14 Doc ID 12563 Rev 2 0.20 0.008 BAS70 Package information Table 9. SOT-23 dimensions Dimensions Ref. Millimeters Min. Max. Min. Max. A 0.89 1.4 0.035 0.055 A1 0 0.1 0 0.004 B 0.3 0.51 0.012 0.02 c 0.085 0.18 0.003 0.007 D 2.75 3.04 0.108 0.12 e 0.85 1.05 0.033 0.041 e1 1.7 2.1 0.067 0.083 E 1.2 1.6 0.047 0.063 H 2.1 2.75 0.083 0.108 A E e B D e1 S A1 L Inches c H L 0.6 typ. S 0.35 0.024 typ. 0.65 0.014 0.026 Figure 19. SOT-23 footprint (dimensions in mm) 0.95 0.61 1.26 0.73 3.25 Doc ID 12563 Rev 2 9/14 Package information BAS70 Table 10. SOT-323 dimensions Dimensions Ref. A E Millimeters Min. e Typ. Inches Max. Min. Typ. Max. A 0.8 1.1 0.031 0.043 A1 0.0 0.1 0.0 0.004 b 0.25 0.4 0.010 0.016 c 0.1 0.26 0.004 0.010 D 1.8 2.0 2.2 0.071 0.079 0.086 E 1.15 1.25 1.35 0.045 0.049 0.053 D b A1 e c θ L 0.65 0.026 H 1.8 2.1 2.4 0.071 0.083 0.094 L 0.1 0.2 0.3 0.004 0.008 0.012 q 0 30° 0 H Figure 20. SOT-323 footprint (dimensions in mm) 0.95 1.0 0.8 10/14 Doc ID 12563 Rev 2 0.50 2.9 30° BAS70 Package information Table 11. SOT323-6L dimensions Dimensions A Ref. Millimeters Inches E e b Min. Max. Min. Max. A 0.8 1.1 0.031 0.043 A1 0 0.1 0 0.004 A2 0.8 1 0.031 0.039 b 0.15 0.3 0.006 0.012 c 0.1 0.18 0.004 0.007 D 1.8 2.2 0.071 0.086 E 1.15 1.35 0.045 0.053 D e A1 A2 Q1 e c L HE 0.65 Typ. 0.025 Typ. H 1.8 2.4 0.071 0.094 Q 0.1 0.4 0.004 0.016 Figure 21. SOT323-6L footprint (dimensions in mm) 0.65 1.05 2.9 0.80 1.05 0.40 Doc ID 12563 Rev 2 11/14 Package information BAS70 Table 12. SOT-666 dimensions Dimensions b1 Ref. Millimeters Inches L1 Min. Typ. Max. Min. Typ. Max. A 0.45 0.60 0.018 0.024 A3 0.08 0.18 0.003 0.007 b 0.17 0.34 0.007 0.013 b1 0.19 D 1.50 1.70 0.059 0.067 E 1.50 1.70 0.059 0.067 E1 1.10 1.30 0.043 0.051 L3 b D E1 0.27 0.34 0.007 0.011 0.013 A L2 E A3 e 0.50 0.020 L1 0.19 0.007 L2 0.10 0.30 0.004 0.012 e L3 0.10 Figure 22. SOT-666 footprint (dimensions in mm) 0.50 0.62 0.99 0.30 12/14 Doc ID 12563 Rev 2 2.60 0.004 BAS70 4 Ordering information Ordering information Table 13. Ordering information Order code 5 Marking Package Weight Base qty Delivery mode BAS70ZFILM Z70 SOD-123 10 mg 3000 Tape and reel BAS70FILM D76 SOT-23 Single 10 mg 3000 Tape and reel BAS70-04FILM D96 SOT-23 Series 10 mg 3000 Tape and reel BAS70-05FILM D97 SOT-23 Common cathode 10 mg 3000 Tape and reel BAS70-06FILM D98 SOT-23 Common anode 10 mg 3000 Tape and reel BAS70WFILM D28 SOT-323 Single 6 mg 3000 Tape and reel BAS70-04WFILM D31 SOT-323 Series 6 mg 3000 Tape and reel BAS70-05WFILM D30 SOT-323 Common cathode 6 mg 3000 Tape and reel BAS70-06WFILM D29 SOT-323 Common anode 6 mg 3000 Tape and reel BAS70-08SFILM D33 SOT323-6L 3 Parallel 6 mg 3000 Tape and reel BAS70JFILM 76 SOD-323 5 mg 3000 Tape and reel BAS70KFILM 76 SOD-523 1.4 mg 3000 Tape and reel BAS70-07P6FILM P7 SOT-666 2 Parallel 2.9 mg 3000 Tape and reel BAS70-09P6FILM Q7 SOT-666 2 Opposite 2.9 mg 3000 Tape and reel Revision history Table 14. Document revision history Date Revision Changes 24-Jul-2006 1 BAS70J / W datasheets merged. ECOPACK statement added. SOD523 and SOT-666 packages added. 12-Oct-2009 2 Updated Table 8 quote “L1” from 0.10 to 0.05. Doc ID 12563 Rev 2 13/14 BAS70 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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