BB178LX UHF variable capacitance diode Rev. 01 — 14 April 2006 Preliminary data sheet 1. Product profile 1.1 General description The BB178LX is a planar technology variable capacitance diode in a SOD882T ultra small leadless plastic SMD package. The excellent matching performance is achieved by gliding matching and a Direct Matching Assembly (DMA) procedure. 1.2 Features n n n n n Excellent linearity Excellent matching to 2 % DMA Ultra small leadless SMD package Cd(28V): 2.6 pF; Cd(1V) to Cd(28V) ratio typical 15 Low series resistance 1.3 Applications n Voltage Controlled Oscillators (VCO) n Electronic tuning in VHF television tuners, Band B up to 460 MHz 2. Pinning information Table 1. Pin Discrete pinning Description 1 cathode 2 anode Simplified outline 1 2 Transparent top view [1] Symbol [1] sym008 The marking bar indicates the cathode. 3. Ordering information Table 2. Ordering information Type number Package BB178LX Name Description Version - leadless ultra small plastic package; 2 terminals; body 1.0 × 0.6 × 0.4 mm SOD882T BB178LX Philips Semiconductors UHF variable capacitance diode 4. Marking Table 3. Marking Type number Marking code BB178LX L3 5. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Min Max Unit VR reverse voltage Conditions - 32 V IF forward current - 20 mA Tstg storage temperature −55 +150 °C Tj junction temperature −55 +125 °C 6. Characteristics Table 5. Characteristics Tj = 25 °C unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit IR reverse current see Figure 3 VR = 30 V - - 10 nA VR = 30 V; Tj = 85 °C - - 200 nA - 0.7 - Ω rs diode series resistance f = 470 MHz; Cd = 30 pF; see Figure 2 Cd diode capacitance see Figure 1 and Figure 4; f = 1 MHz; VR = 1 V 34.65 - 42.35 pF VR = 28 V 2.36 2.6 2.75 pF C d ( 1V ) ---------------C d ( 2V ) diode capacitance ratio f = 1 MHz - 1.3 - C d ( 1V ) ------------------C d ( 28V ) diode capacitance ratio f = 1 MHz 13.5 15 - C d ( 25V ) ------------------C d ( 28V ) diode capacitance ratio f = 1 MHz - 1.08 - diode capacitance matching VR = 1 V to 28 V; in sequence of 5 diodes (gliding) - - 2 ∆C d ---------Cd BB178LX_1 Preliminary data sheet % © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Rev. 01 — 14 April 2006 2 of 7 BB178LX Philips Semiconductors UHF variable capacitance diode 001aae539 60 001aae540 0.8 rs (Ω) Cd (pF) 0.6 40 0.4 20 0.2 0 10−1 1 102 10 0 10−1 1 102 10 VR (V) VR (V) f = 1 MHz; Tj = 25 °C. f = 470 MHz; Tj = 25 °C. Fig 1. Diode capacitance as a function of reverse voltage; typical values 001aae541 103 IR (nA) Fig 2. Diode serial resistance as a function of reverse voltage; typical values 001aae542 10−2 TCCd (K−1) 102 10−3 10 10−4 1 0 20 40 60 80 100 10−5 10−1 1 Tj (°C) 102 10 VR (V) Tj = 0 °C to 85 °C. Fig 3. Reverse current as function of junction temperature; maximum values Fig 4. Temperature coefficient of diode capacitance as a function of reverse voltage; typical values BB178LX_1 Preliminary data sheet © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Rev. 01 — 14 April 2006 3 of 7 BB178LX Philips Semiconductors UHF variable capacitance diode 7. Package outline Leadless ultra small plastic package; 2 terminals; body 1 x 0.6 x 0.4 mm SOD882T (2×) L1 (2×) w 1 2 M A b (2×) (2×) w M B e1 A A1 y A E D (1) B 0 UNIT A mm 0.40 0.36 0.04 1 mm scale DIMENSIONS (mm are the original dimensions) A1 max 0.5 b D E e1 L1 w y 0.55 0.45 0.65 0.55 1.05 0.95 0.65 0.30 0.22 0.1 0.03 Note 1. The marking bar indicates the cathode OUTLINE VERSION REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 04-12-14 06-04-12 SOD882T Fig 5. Package outline SOD882T BB178LX_1 Preliminary data sheet © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Rev. 01 — 14 April 2006 4 of 7 BB178LX Philips Semiconductors UHF variable capacitance diode 8. Revision history Table 6. Revision history Document ID Release date Data sheet status Change notice Supersedes BB178LX_1 20060414 Preliminary data sheet - - BB178LX_1 Preliminary data sheet © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Rev. 01 — 14 April 2006 5 of 7 BB178LX Philips Semiconductors UHF variable capacitance diode 9. Legal information 9.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term ‘short data sheet’ is explained in section “Definitions”. [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.semiconductors.philips.com. 9.2 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Philips Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Philips Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 9.3 Disclaimers General — Information in this document is believed to be accurate and reliable. However, Philips Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Right to make changes — Philips Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — Philips Semiconductors products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or malfunction of a Philips Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Philips Semiconductors accepts no liability for inclusion and/or use of Philips Semiconductors products in such equipment or applications and therefore such inclusion and/or use is for the customer’s own risk. Applications — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. Terms and conditions of sale — Philips Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.semiconductors.philips.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by Philips Semiconductors. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. 9.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 10. Contact information For additional information, please visit: http://www.semiconductors.philips.com For sales office addresses, send an email to: [email protected] BB178LX_1 Preliminary data sheet © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Rev. 01 — 14 April 2006 6 of 7 BB178LX Philips Semiconductors UHF variable capacitance diode 11. Contents 1 1.1 1.2 1.3 2 3 4 5 6 7 8 9 9.1 9.2 9.3 9.4 10 11 Product profile . . . . . . . . . . . . . . . . . . . . . . . . . . General description. . . . . . . . . . . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . Pinning information . . . . . . . . . . . . . . . . . . . . . . Ordering information . . . . . . . . . . . . . . . . . . . . . Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . Package outline . . . . . . . . . . . . . . . . . . . . . . . . . Revision history . . . . . . . . . . . . . . . . . . . . . . . . . Legal information. . . . . . . . . . . . . . . . . . . . . . . . Data sheet status . . . . . . . . . . . . . . . . . . . . . . . Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contact information. . . . . . . . . . . . . . . . . . . . . . Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 1 1 1 2 2 2 4 5 6 6 6 6 6 6 7 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © Koninklijke Philips Electronics N.V. 2006. All rights reserved. For more information, please visit: http://www.semiconductors.philips.com. For sales office addresses, email to: [email protected]. Date of release: 14 April 2006 Document identifier: BB178LX_1