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Infineon Technologies BB 689-02V E7902
- Part No.:
- BB 689-02V E7902
- Manufacturer:
- Infineon Technologies
- Package:
- SC-79, SOD-523
- Datasheet:
-
BB 689-02V E7902.pdf
- Description:
- DIODE VAR CAP 30V 20MA SC-79
- Quantity:
- Payment:
- Shipping:
Inventory:8,442
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Product details
Overview
BB 689-02V E7902 from Infineon Technologies is a silicon tuning diode (varactor) designed for VHF TV tuner front-end voltage-controlled oscillator (VCO) and RF filter tuning circuits. It delivers a capacitance range of 2.5–61.5 pF at 1 MHz, a high capacitance ratio CT₁/CT₂₈ = 20.9, and low series resistance of 0.85 Ω at 470 MHz - enabling precise, low-loss frequency adjustment in compact analog tuners.
For engineers reviewing the BB 689-02V E7902 datasheet, BB 689-02V E7902 pinout, BB 689-02V E7902 application in VHF RF tuning, or BB 689-02V E7902 equivalent varactors, key selection criteria include its SC79 package footprint, 30 V reverse voltage rating, 2% capacitance matching across matched diode sequences, and temperature-stable C-V characteristics critical for broadcast receiver stability.
Technical Context
This varactor operates as a voltage-dependent capacitor in reverse-biased mode, with capacitance varying nonlinearly from 61.5 pF at 1 V to 2.5 pF at 28 V (f = 1 MHz). Its C-V curve exhibits monotonic decrease and low hysteresis, optimized for analog tuning linearity in VHF band (30–300 MHz) applications.
The device uses an "in-line" matching assembly process ensuring ±2% capacitance matching across 7-diode sequences, and features a low series inductance of 0.6 nH and temperature coefficient of capacitance (TCC) below 10⁻³ /°C over VR = 1–28 V - supporting stable tuning across industrial temperature range (−55 °C to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 1 V | 51–61.5 pF - sets maximum tuning range and low-frequency resonance point in VCO tank circuits |
| Capacitance @ 28 V | 2.5–2.9 pF - defines minimum capacitance and high-frequency cutoff limit in RF filters |
| Capacitance Ratio CT₁/CT₂₈ | 18–23.2 - determines total frequency tuning bandwidth (e.g., ~4.8:1 ratio supports >100 MHz VHF span) |
| Series Resistance rS | 0.85–1.2 Ω @ 470 MHz - directly impacts Q-factor degradation and phase noise in oscillator designs |
| Reverse Voltage VR | 30 V DC max - sets safe bias headroom for tuner AGC and tuning voltage rails |
| Operating Temp Range | −55 °C to +150 °C - enables use in sealed tuner modules exposed to chassis-level thermal cycling |
| Capacitance Matching ∆CT/CT | ≤2% across 7-diode sequence - ensures consistent channel-to-channel tracking in multi-band tuner ICs |
Pinout & Package
BB 689-02V E7902 is housed in the SC79 (SOD-523) surface-mount package: 1.3 mm × 0.7 mm × 0.6 mm, single-anode/single-cathode configuration, cathode marked by laser dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | DC bias input / RF AC ground reference | Connected to tuning voltage rail via high-impedance resistor; serves as RF return path in shunt-tuned configurations |
| Cathode (Pin 2) | RF signal node / variable capacitance terminal | Directly connected to LC tank or filter node; reverse-bias voltage applied between cathode and anode to modulate capacitance |
Key Features
| Feature | Design Value |
|---|---|
| High capacitance ratio (CT₁/CT₂₈ = 20.9) | Enables wide VHF tuning bandwidth without switching capacitors or multiple diodes |
| Low series resistance (rS = 0.85 Ω) | Maintains tank circuit Q > 100 at 100 MHz, reducing oscillator phase noise and insertion loss |
| In-line capacitance matching (±2%) | Supports production-grade consistency in multi-channel TV tuner modules without binning |
| SC79 ultra-small footprint (1.3 × 0.7 mm) | Reduces PCB area by >40% vs. SOD-323, critical for space-constrained set-top box tuner modules |
| Pb-free, RoHS-compliant construction | Meets global environmental compliance for consumer electronics manufacturing and reflow profiles |
Applications
| VHF Broadcast TV Tuner | FM Radio Front-End Filter |
|---|---|
Use Scenario: Analog/digital terrestrial TV receiver tuning across 47–230 MHz band with automatic frequency control (AFC). IC Role / Device Role / Timing Role: Voltage-controlled capacitor in parallel-resonant VCO tank, adjusted by tuner IC's DAC output. Use Value: 20.9:1 capacitance ratio enables full-band coverage with single diode; ±2% matching ensures channel scan repeatability. | Use Scenario: Adjustable IF or RF bandpass filter in portable FM radio receivers (87.5–108 MHz). IC Role / Device Role / Timing Role: Tuning element in switched-capacitor or varactor-loaded LC filter topology. Use Value: Low rS (0.85 Ω) preserves filter selectivity; SC79 size allows dual-filter integration on coin-cell-powered PCBs. |
| Wireless Microphone Transmitter | CATV Drop Amplifier Tuning |
Use Scenario: Frequency-agile UHF/VHF wireless microphone transmitter (174–216 MHz) requiring stable carrier tuning. IC Role / Device Role / Timing Role: Primary capacitance control in Colpitts oscillator core, biased via potentiometer or microcontroller DAC. Use Value: −55 °C to +150 °C rating supports operation inside plastic enclosures under direct sunlight exposure. | Use Scenario: Channel-specific gain flattening in 5–1000 MHz CATV drop amplifiers using tunable peaking networks. IC Role / Device Role / Timing Role: Fine-tuning capacitor in shunt-peaking inductor network to compensate cable loss slope. Use Value: 0.6 nH series inductance minimizes self-resonance shift up to 500 MHz, preserving flatness calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor tuning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C,115 (Nexperia) | Lower capacitance range (10–30 pF), lower CT ratio (~3:1), higher rS (>2 Ω) | Suitable only for narrowband IF tuning, not full-VHF coverage | Select when cost sensitivity outweighs tuning range and Q requirements |
| SMV1232-011 (Skyworks) | Higher VR (35 V), tighter CT matching (±1%), but larger SC-70 package (2.0 × 1.25 mm) | Preferred for new designs needing extended voltage margin and automated optical alignment | Choose for high-volume automotive infotainment where AEC-Q200 qualification is required |
Compared with BAT54C and SMV1232-011, BB 689-02V E7902 uniquely balances ultra-compact SC79 size, 20.9:1 tuning ratio, and production-grade matching - making it optimal for legacy and cost-sensitive VHF tuner modules where board space and analog consistency are primary constraints.
Availability
BB 689-02V E7902 is available at Aetrix Electronics and suitable for VHF TV tuners, FM radio receivers, wireless microphone transmitters, and CATV drop amplifier tuning requiring stable component supply and tight capacitance matching.
Supply support for BB 689-02V E7902 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with leadership in high-reliability discrete components for industrial and broadcast markets.
BB 689-02V E7902 belongs to Infineon's silicon tuning diode product line, engineered specifically for analog frequency control in broadcast receiver front-ends - emphasizing capacitance linearity, thermal stability, and batch-matching for mass-produced TV and radio systems.
FAQ
What is the maximum recommended reverse voltage for continuous operation?
The absolute maximum DC reverse voltage is 30 V at TA = 25 °C. Derating is required above 25 °C: VR decreases linearly to 25 V at 125 °C per Infineon's Absolute Maximum Ratings table. Exceeding 30 V risks irreversible junction breakdown, especially under RF stress or thermal transients.
How does capacitance matching work across a production lot?
Infineon uses an "in-line" matching assembly process where up to seven BB 689-02V E7902 diodes are selected from adjacent wafer positions and packaged sequentially. This yields ≤2% ∆CT/CT variation across the sequence - verified per Application Note AN047 - enabling matched tuning in multi-band tuner ICs without post-assembly calibration.
Can BB 689-02V E7902 be used in 5G sub-6 GHz front-ends?
No - its C-V curve is characterized only up to 28 V and 1 MHz, and series inductance (0.6 nH) causes self-resonance below 1 GHz. At 3.5 GHz, parasitic effects dominate, and measured capacitance deviates >30% from DC/low-frequency specs. It is validated only for VHF (30–300 MHz) and FM (88–108 MHz) bands.
Is the SC79 package compatible with standard reflow soldering profiles?
Yes - BB 689-02V E7902 meets JEDEC J-STD-020D moisture sensitivity level (MSL) 1 and is qualified for lead-free reflow up to 260 °C peak temperature. The SC79 body withstands thermal shock during standard 240–260 °C ramp-up profiles; no special pre-bake is required for dry-packed reels.
BB 689-02V E7902 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 2.9pF @ 28V, 1MHz
- Capacitance Ratio:
- 23.2
- Capacitance Ratio Condition:
- C1/C28
- Voltage - Peak Reverse (Max):
- 30 V
- Diode Type:
- Single
- Q @ Vr, F:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SC79-2
BB 689-02V E7902 FAQ
1.How can I place an order for BB 689-02V E7902 through Aetrix?
Please submit a Request for Quotation (RFQ) for BB 689-02V E7902 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BB 689-02V E7902 reliable?
The price and inventory of BB 689-02V E7902 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB 689-02V E7902 is usually 5 days.
3.What payment methods are accepted for BB 689-02V E7902?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB 689-02V E7902 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BB 689-02V E7902?
BB 689-02V E7902 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BB 689-02V E7902 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BB 689-02V E7902?
For technical support, including BB 689-02V E7902 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB 689-02V E7902 requirements.
6.How does Aetrix verify that BB 689-02V E7902 is sourced from the original manufacturer or authorized distributors?
All BB 689-02V E7902 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BB 689-02V E7902 meets industry standards.
7.What is the process for return or replacement of BB 689-02V E7902?
All BB 689-02V E7902 units undergo pre-shipment inspection (PSI). If there is an issue with BB 689-02V E7902, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BB 689-02V E7902 part is unused and in its original packaging.
Return procedure for BB 689-02V E7902:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BB 689-02V E7902 Tags
-
BBY5702VH6327XTSA1
Infineon Technologies
-
BBY5602VH6327XTSA1
Infineon Technologies
-
SMV1405-040LF
Skyworks Solutions Inc.
-
BBY6502VH6327XTSA1
Infineon Technologies
-
BBY6602VH6327XTSA1
Infineon Technologies
-
BBY5802VH6327XTSA1
Infineon Technologies
.jpg)
-
BB175X
NXP USA Inc.
-
SMV1430-040LF
Skyworks Solutions Inc.
-
SMV1273-079LF
Skyworks Solutions Inc.
-
SMV1255-079LF
Skyworks Solutions Inc.
-
SMV1213-079LF
Skyworks Solutions Inc.
-
SMV1247-079LF
Skyworks Solutions Inc.
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