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NXP Semiconductors BB202LX,315
- Part No.:
- BB202LX,315
- Manufacturer:
- NXP Semiconductors
- Package:
- SOD-882
- Datasheet:
-
BB202LX,315.pdf
- Description:
- DIODE LV VAR CAP 6V SOD882T
- Quantity:
- Payment:
- Shipping:
Inventory:3,942
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Product details
Overview
BB202LX from NXP Semiconductors is a low-voltage planar variable capacitance diode (varactor) in an ultra-small SOD882T leadless SMD package, designed for voltage-controlled tuning. It delivers 30.5 pF capacitance at 0.2 V reverse bias, 9.5 pF at 2.3 V, with a minimum capacitance ratio of 2.5 and series resistance of 0.35 Ω at 100 MHz - enabling precise frequency control in compact FM radio front-ends.
For engineers reviewing the BB202LX datasheet, BB202LX pinout, BB202LX application, or BB202LX equivalent, key selection criteria include its steep CV curve, low-series-resistance performance at RF frequencies, SOD882T footprint compatibility, and qualification as reference varactor for TEA5764/5767/5768 tuner ICs in portable platforms.
Technical Context
The BB202LX operates as a reverse-biased junction varactor, where applied DC voltage modulates depletion-layer width to vary junction capacitance. Its planar silicon structure ensures stable CV characteristics across −55 °C to +85 °C junction temperature.
Capacitance is specified at 1 MHz and 470 MHz, with typical values measured at 25 °C; reverse current remains ≤10 nA at 6 V and 25 °C, supporting low-power VCO bias networks. The device is not automotive-qualified and is rated for maximum 6 V reverse voltage and 10 mA forward current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 0.2 V | 28.2–33.5 pF - sets VCO center frequency and tuning range lower bound |
| Capacitance @ 2.3 V | 7.2–11.2 pF - defines upper tuning limit and frequency deviation capability |
| Capacitance Ratio | ≥2.5 (C0.2V/C2.3V) - enables ≥4 dB tuning sensitivity in narrowband VCO designs |
| Series Resistance | Typ. 0.35 Ω at 100 MHz - minimizes Q-factor degradation and phase noise in resonant tank circuits |
| Reverse Voltage Max | 6 V - constrains bias network design and limits tuning voltage headroom |
| Junction Temp Range | −55 °C to +85 °C - supports operation in consumer portable and industrial ambient environments |
Pinout & Package
SOD882T is a leadless ultra-small plastic SMD package measuring 1.0 × 0.6 × 0.4 mm, with two terminals and a cathode-marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to DC bias supply (reverse bias); polarity must be observed to avoid forward conduction |
| 2 | Anode | Connected to RF ground or resonant node; forms tunable junction with cathode |
Key Features
| Feature | Design Value |
|---|---|
| Steep CV curve | Enables fine-grained frequency resolution in low-voltage tuning applications (e.g., battery-powered radios) |
| Low series resistance | Preserves high Q in LC tanks up to 470 MHz, reducing VCO phase noise floor |
| Ultra-small SOD882T package | Supports high-density PCB layouts in space-constrained mobile platforms (e.g., wearables, Bluetooth audio) |
| Low reverse leakage | ≤10 nA at 6 V/25 °C minimizes bias current draw and thermal drift in precision tuning circuits |
Applications
| FM Radio Tuning | VCO Frequency Calibration |
|---|---|
Use Scenario: Electronic channel selection in portable FM receivers using TEA5767 tuner IC. IC Role / Device Role / Timing Role: Reference varactor providing voltage-dependent capacitance to tune local oscillator frequency. Use Value: Matches Philips-recommended specification for TEA5767-based designs, ensuring stable station lock and minimal drift over temperature. | Use Scenario: Factory calibration of VCO center frequency during production test of wireless transceivers. IC Role / Device Role / Timing Role: Adjustable capacitance element in PLL loop filter and tank circuit for trimmable frequency offset correction. Use Value: Tight capacitance tolerance (±~9%) and low rs enable repeatable, low-noise calibration without external trimming components. |
| Portable Audio Devices | Low-Power Wireless Sensors |
Use Scenario: Integrated FM receiver in Bluetooth speaker or smart headphone with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Low-voltage varactor enabling full tuning range from 0.2 V to 2.3 V bias - compatible with 3.3 V LDO output. Use Value: 6 V max reverse rating and 10 nA leakage allow direct connection to microcontroller DAC outputs without level-shifting. | Use Scenario: Sub-GHz ISM band transmitter in battery-operated environmental sensor node. IC Role / Device Role / Timing Role: Tuning element in Colpitts oscillator for adaptive frequency hopping or channel selection. Use Value: SOD882T footprint and 0.35 Ω rs support efficient RF matching at 868/915 MHz while minimizing PCB area and power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BBY52-02W | Higher C0.2V (45 pF typ), larger SOD523 package (1.2 × 0.8 mm), rs = 0.5 Ω | Better low-frequency tuning range but less suited for ultra-compact layouts | Select when wider capacitance range outweighs board space constraints |
| SMV1232-011 | Lower C0.2V (15 pF typ), SOT-23 package, rs = 0.9 Ω, higher VR (15 V) | Higher voltage headroom but reduced Q and tuning sensitivity at VHF/UHF | Select only if system requires >6 V tuning voltage or legacy SOT-23 footprint |
Compared with BBY52-02W and SMV1232-011, the BB202LX offers optimal balance of miniaturization (SOD882T), low rs, and steep CV slope - making it preferred for space- and noise-sensitive FM tuner modules where TEA576x IC compatibility is required.
Availability
BB202LX is available at Aetrix Electronics and suitable for FM radio tuning, VCO calibration, portable audio devices, and low-power wireless sensors requiring stable component supply and consistent CV performance across production batches.
Supply support for BB202LX 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The BB202LX belongs to NXP's discrete RF varactor family, engineered specifically for electronic tuning in portable FM radio systems and optimized for interoperability with their TEA576x tuner IC portfolio.
FAQ
What is the maximum reverse voltage rating for BB202LX?
The BB202LX has an absolute maximum reverse voltage rating of 6 V, as defined in IEC 60134 limiting values. Exceeding this voltage risks permanent junction damage. For reliable operation, design bias networks to stay within 0.2 V to 2.3 V reverse bias - the range where capacitance and series resistance are characterized and optimized. The BB202LX datasheet specifies performance only up to 6 V, and no derating guidance is provided for extended life at lower voltages.
Is BB202LX qualified for automotive applications?
No, the BB202LX is not automotive-qualified. The NXP datasheet explicitly states that unless otherwise indicated, non-automotive qualified products like BB202LX are neither tested nor warranted for use in safety-critical or life-support systems. Its specified junction temperature range (−55 °C to +85 °C) meets industrial requirements but does not satisfy AEC-Q200 stress testing or automotive reliability standards. BB202LX is intended for consumer portable and industrial equipment only.
What does the marking code 'L1' indicate on BB202LX?
The marking code 'L1' on the BB202LX top surface identifies the device variant and confirms authenticity per NXP's ordering information table. It corresponds exclusively to the BB202LX type number and is laser-marked on the SOD882T package. The marking bar adjacent to 'L1' denotes the cathode terminal (Pin 1), which must be oriented toward the higher DC potential in reverse-bias configurations. This marking is standardized across NXP's SOD882T varactor portfolio.
How is the capacitance ratio of BB202LX defined and measured?
The BB202LX capacitance ratio is defined as Cd(0.2 V)/Cd(2.3 V), with a minimum guaranteed value of 2.5. It is measured at 1 MHz under Tj = 25 °C, using standard RF impedance analyzers per IEC 60134 test methods. Typical values range from 2.8 to 3.0 based on characterization data in Figure 1 of the datasheet. This ratio directly determines usable VCO tuning bandwidth and linearity - a higher ratio improves frequency span without increasing bias voltage range.
Can BB202LX replace BB202 in existing designs?
No, BB202LX is not a drop-in replacement for BB202. While both are NXP varactors, BB202 uses an older SOD323 package (1.7 × 1.3 mm), whereas BB202LX uses the smaller SOD882T (1.0 × 0.6 mm). Pin pitch, thermal mass, and parasitic inductance differ significantly. Layout redesign and re-characterization of tuning range and phase noise are required. The BB202LX datasheet makes no claim of pin compatibility or functional equivalence with BB202, and no cross-reference is provided in NXP documentation.
BB202LX,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 11.2pF @ 2.3V, 1MHz
- Capacitance Ratio:
- 2.5
- Capacitance Ratio Condition:
- C0.2/C2.3
- Voltage - Peak Reverse (Max):
- 6 V
- Diode Type:
- Single
- Q @ Vr, F:
- -
- Operating Temperature:
- -55°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD2
BB202LX,315 FAQ
1.How can I place an order for BB202LX,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BB202LX,315 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 BB202LX,315 reliable?
The price and inventory of BB202LX,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB202LX,315 is usually 5 days.
3.What payment methods are accepted for BB202LX,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB202LX,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BB202LX,315?
BB202LX,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BB202LX,315 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 BB202LX,315?
For technical support, including BB202LX,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB202LX,315 requirements.
6.How does Aetrix verify that BB202LX,315 is sourced from the original manufacturer or authorized distributors?
All BB202LX,315 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 BB202LX,315 meets industry standards.
7.What is the process for return or replacement of BB202LX,315?
All BB202LX,315 units undergo pre-shipment inspection (PSI). If there is an issue with BB202LX,315, 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 BB202LX,315 part is unused and in its original packaging.
Return procedure for BB202LX,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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