Datasheet BB170 Datasheet (Philips)

BB178

VHF variable capacitance diode

Rev. 02 — 3 November 2004 Product data sheet

1. Product proﬁle

1.1 General description

The BB178 is a planar technology variable capacitance diode, in a SOD523 (SC-79) ultra small plastic package. The excellent matching performance is achieved by gliding matching and a Direct Matching Assembly (DMA) procedure.

1.2 Features

■ Excellent linearity

■ Excellent matching to 2 % DMA

■ Ultra small plastic SMD package

■ C

■ Very low series resistance.

d(28V)

: 2.6 pF; C

d(1V)

to C

d(28V)

ratio: 15

1.3 Applications

■ Electronic tuning in VHF television tuners, band B up to 460 MHz

■ Voltage Controlled Oscillators (VCO).

2. Pinning information

Table 1: Pinning

Pin Description Simpliﬁed outline

1 cathode 2 anode

[1] The marking bar indicates the cathode.

3. Ordering information

Table 2: Ordering information

Type number Package

BB178 SC-79 plastic surface mounted package; 2 leads SOD523

[1]

Top view

Name Description Version

Symbol

sym008

Philips Semiconductors

4. Marking

Table 3: Marking

Type number Marking code

BB178 8

5. Limiting values

Table 4: Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions Min Max Unit

stg

BB178

VHF variable capacitance diode

reverse voltage - 32 V peak reverse voltage in series with a

10 kΩ resistor forward current - 20 mA storage temperature −55 +150 °C junction temperature −55 +125 °C

-35V

6. Characteristics

Table 5: Characteristics

Tj = 25°C unless otherwise speciﬁed.

Symbol Parameter Conditions Min Typ Max Unit

d1V()

---------------- -

d2V()

d1V()

-------------------

d28V()

d25V()

-------------------

d28V()

Cd∆

----------

reverse current see Figure2

=30V --10nA

= 30 V; Tj=85°C - - 200 nA

diode series

f = 100 MHz

[1]

- 0.65 0.8 Ω

resistance diode

capacitance

f = 1 MHz; see Figure 1 and

Figure 3

= 1 V 34.65 - 42.35 pF

= 28 V 2.361 2.6 2.754 pF

capacitance ratio f = 1 MHz - 1.3 -

capacitance ratio f = 1 MHz 13.5 15 -

capacitance ratio f = 1 MHz - 1.08 -

capacitance matching

= 1 V to 28 V; in a

sequence of 10 diodes

--2%

(gliding)

[1] VR is the value at which Cd = 30 pF.

Product data sheet Rev. 02 — 3 November 2004 2 of 7

Philips Semiconductors

BB178

VHF variable capacitance diode

(pF)

−1

101

f = 1 MHz; Tj=25°C.

Fig 1. Diode capacitance as a function of reverse voltage; typical values.

mlc816

(K−1)

−3

(nA)

mbk438

(V)

mlc815

0 1008040 6020

(°C)

Fig 2. Reverse current as a function of junction

temperature; maximum values.

−4

−5

−1

110

VR (V)

Tj=0°C to 85 °C.

Fig 3. Temperature coefﬁcient of diode capacitance

as a function of reverse voltage; typical values.

Product data sheet Rev. 02 — 3 November 2004 3 of 7

Philips Semiconductors

BB178

VHF variable capacitance diode

7. Package outline

Plastic surface mounted package; 2 leads SOD523

v M

(1)

OUTLINE

VERSION

SOD523 SC-79

IEC JEDEC JEITA

Fig 4. Package outline SOD523 (SC-79).

REFERENCES

0 0.5 1 mm

scale

DIMENSIONS (mm are the original dimensions)

UNIT b

Note

1. The marking bar indicates the cathode.

0.65

0.58

0.34

0.26

0.17

1.25

0.11

1.15

EUROPEAN

PROJECTION

0.85

0.75

1.65

1.55

ISSUE DATE

98-11-25 02-12-13

0.1

Product data sheet Rev. 02 — 3 November 2004 4 of 7

Philips Semiconductors

BB178

VHF variable capacitance diode

8. Revision history

Table 6: Revision history

Document ID Release date Data sheet status Change notice Doc. number Supersedes

BB178_2 20041103 Product data sheet - 9397 750 13831 BB178_1 Modiﬁcations:

BB178_1 19971113 Product speciﬁcation - 9397 750 02982 -

• The format of this data sheet has been redesigned to comply with the new presentation and

information standard of Philips Semiconductors

• Table 5 “Characteristics”: ∆C

of 10 diodes

• Table 5 “Characteristics”: added typical value of 2.6 pF for C

• Table 5 “Characteristics”: added typical value of 15 for C

conditions changed from sequence of 15 diodes to sequence

d/Cd

d(28V)

d(1V)

to C

d(28V)

ratio.

Product data sheet Rev. 02 — 3 November 2004 5 of 7

Philips Semiconductors

9. Data sheet status

BB178

VHF variable capacitance diode

Level Data sheet status

I Objective data Development This data sheet contains data from the objective speciﬁcation for product development. Philips

II Preliminary data Qualiﬁcation Thisdata sheet contains datafrom the preliminary speciﬁcation. Supplementary data will bepublished

III Product data Production This data sheet contains data from the product speciﬁcation. Philips Semiconductors reserves the

[1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at

URL http://www.semiconductors.philips.com.

[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.

[1]

Product status

10. Deﬁnitions

Short-form speciﬁcation — The data in a short-form speciﬁcation is

extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.

Limiting values deﬁnition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the speciﬁcation is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the speciﬁed use without further testing or modiﬁcation.

[2] [3]

Deﬁnition

Semiconductors reserves the right to change the speciﬁcation in any manner without notice.

at a later date. PhilipsSemiconductors reserves the right tochange the speciﬁcation without notice, in order to improve the design and supply the best possible product.

right to make changes at any time in order to improvethe design, manufacturing and supply.Relevant changes will be communicated via a Customer Product/Process Change Notiﬁcation (CPCN).

11. Disclaimers

Life support — These products are not designed for use in life support

appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to make changes in the products - including circuits, standard cells, and/or software - described or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated via a Customer Product/Process Change Notiﬁcation (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, andmakes no representationsor warranties thatthese products are free from patent,copyright, or mask work rightinfringement, unlessotherwise speciﬁed.

12. Contact information

For additional information, please visit: http://www.semiconductors.philips.com For sales ofﬁce addresses, send an email to: sales.addresses@www.semiconductors.philips.com

Product data sheet Rev. 02 — 3 November 2004 6 of 7

Philips Semiconductors

13. Contents

1 Product proﬁle . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 General description. . . . . . . . . . . . . . . . . . . . . . 1

1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Pinning information. . . . . . . . . . . . . . . . . . . . . . 1

3 Ordering information. . . . . . . . . . . . . . . . . . . . . 1

4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

5 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 2

6 Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 2

7 Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 4

8 Revision history. . . . . . . . . . . . . . . . . . . . . . . . . 5

9 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . . 6

10 Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

11 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

12 Contact information . . . . . . . . . . . . . . . . . . . . . 6

BB178

VHF variable capacitance diode

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Published in The Netherlands

Date of release: 3 November 2004

Document number: 9397 750 13831

Datasheet BB170 Datasheet (Philips)

Specifications and Main Features

Frequently Asked Questions

User Manual

1.1 General description

1.2 Features

1.3 Applications

2. Pinning information

3. Ordering information

4. Marking

5. Limiting values

6. Characteristics

7. Package outline

8. Revision history

9. Data sheet status

11. Disclaimers

12. Contact information

13. Contents