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NXP Semiconductors BB182LX,315
- Part No.:
- BB182LX,315
- Manufacturer:
- NXP Semiconductors
- Package:
- SOD-882
- Datasheet:
-
BB182LX,315.pdf
- Description:
- DIODE VHF VAR CAP 32V SOD882
- Quantity:
- Payment:
- Shipping:
Inventory:5,240
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Product details
Overview
BB182LX,315 from NXP Semiconductors is a planar variable capacitance diode (varactor) in an ultra-small SOD882T leadless SMD package, designed for VHF tuning applications up to 160 MHz. It delivers Cd(1V) = 52–62 pF, Cd(28V) = 2.48–2.89 pF, Cd(1V)/Cd(28V) ratio of 20.6–22, series resistance rs ≤ 1.0 Ω at 100 MHz, and capacitance matching ≤ 2 % via Direct Matching Assembly (DMA).
For engineers reviewing the BB182LX,315 datasheet, BB182LX,315 pinout, BB182LX,315 application, or BB182LX,315 equivalent, key selection criteria include VHF capacitance tuning range, low-series-resistance performance at 100 MHz, tight capacitance matching across voltage sweep, and compatibility with ultra-compact SOD882T layout constraints in tuner front-ends.
Technical Context
The BB182LX,315 operates as a reverse-biased junction varactor, where capacitance varies nonlinearly with applied DC bias from 1 V to 28 V. Its planar silicon structure enables stable temperature coefficient behavior (see Fig. 4) and low leakage (IR ≤ 10 nA at VR = 30 V, 25 °C).
Designed specifically for electronic tuning in VHF television tuners (Band A), it supports high linearity in oscillator control loops and achieves 2 % matching across five-diode sequences using gliding DMA-critical for multi-stage VCO phase noise reduction and channel selectivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cd(1V) | 52–62 pF - sets minimum VCO tuning capacitance and defines low-end frequency limit in VHF oscillators |
| Cd(28V) | 2.48–2.89 pF - establishes maximum tuning voltage headroom and high-frequency endpoint |
| Cd(1V)/Cd(28V) Ratio | 20.6–22 - determines total VCO frequency tuning range (Δf/f₀ ≈ ½ × ΔC/C₀) |
| rs (Series Resistance) | ≤ 1.0 Ω at 100 MHz - minimizes Q degradation and phase noise in resonant tank circuits |
| Reverse Leakage (IR) | ≤ 10 nA at VR = 30 V, 25 °C - ensures stable bias point and low drift in precision tuning networks |
| Capacitance Matching | ≤ 2 % over 1–28 V sweep (gliding 5-diode sequence) - enables matched-pair use in differential VCOs without calibration |
| Max Reverse Voltage (VR) | 32 V - defines absolute safe operating bias margin for 28 V nominal tuning rails |
Pinout & Package
SOD882T is a leadless ultra-small plastic surface-mount package measuring 1.0 × 0.6 × 0.4 mm. The cathode is marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher DC bias potential in reverse-biased varactor configuration; marking bar identifies this terminal |
| 2 | Anode | Connected to RF ground or AC signal reference; forms the low-impedance side of the junction capacitance |
Key Features
| Feature | Design Value |
|---|---|
| High linearity | Low curvature in C–V curve between 1–28 V enables predictable VCO gain (MHz/V) and reduced harmonic distortion |
| 2 % DMA matching | Guarantees inter-device capacitance tracking within ±2 % across full voltage sweep-essential for balanced VCO topologies |
| Ultra-small SOD882T package | Enables placement adjacent to high-Q inductors in space-constrained TV tuner modules without parasitic coupling |
| Low rs (≤1.0 Ω) | Maintains tank circuit Q > 100 at 100 MHz, directly improving VCO phase noise floor by ~6 dB |
| Cd(1V)/Cd(28V) = 22 | Supports > 4:1 frequency coverage in single-band VHF VCOs-sufficient for full Band A (47–160 MHz) coverage |
Applications
| VHF Television Tuner (Band A) | Voltage-Controlled Oscillator (VCO) |
|---|---|
Use Scenario: Front-end channel selection in analog/digital terrestrial TV receivers operating in 47–160 MHz Band A. IC Role / Device Role / Timing Role: Varactor diode providing voltage-tuned resonant capacitance in LC tank circuits of RF input filters and local oscillators. Use Value: Enables precise, stable channel tuning with <2 % inter-stage capacitance mismatch-reducing image rejection drift across temperature. |
Use Scenario: Core frequency-control element in monolithic or hybrid VHF VCOs for broadcast demodulation and IF generation. IC Role / Device Role / Timing Role: Reverse-biased junction capacitor whose value modulates oscillator frequency in response to tuning voltage. Use Value: Achieves >4:1 frequency span with low phase noise (<−100 dBc/Hz @ 10 kHz offset) due to rs ≤ 1.0 Ω and high C-ratio linearity. |
| Electronic Tuning Module | RF Filter Tuning Network |
Use Scenario: Compact, surface-mount tuning module for portable VHF receivers requiring minimal PCB footprint. IC Role / Device Role / Timing Role: Matched pair of BB182LX,315 diodes used differentially to cancel bias-dependent nonlinearity in tuning paths. Use Value: Leverages 2 % DMA matching to eliminate need for per-unit calibration-reducing production test time and BOM count. |
Use Scenario: Adaptive bandpass filter in VHF spectrum analyzers or agile receivers needing dynamic center-frequency adjustment. IC Role / Device Role / Timing Role: Capacitance element in switched-capacitor or continuous-tuning filter topologies. Use Value: Provides 22:1 capacitance swing with <1.0 Ω ESR-preserving filter insertion loss and shape factor under tuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BBY52,115 | Cd(1V) = 25–30 pF; Cd(28V) = 2.2–2.6 pF; ratio ~11; SOD323 package (1.7 × 1.3 × 0.9 mm) | Narrower tuning range; larger footprint; suited for UHF (>300 MHz) rather than Band A VHF | Select when UHF operation or higher power handling (IF = 50 mA) is required; not drop-in for BB182LX,315 layouts |
| SMV1233-011LF | Cd(1V) = 45–55 pF; Cd(28V) = 2.6–3.0 pF; ratio ~17; SOD-523 package (1.2 × 0.8 × 0.6 mm); IR ≤ 5 nA | Lower leakage, slightly lower C-ratio, 20 % larger footprint than SOD882T | Prefer for low-drift, battery-powered VCOs where leakage dominates long-term tuning stability |
Compared with BBY52,115 and SMV1233-011LF, the BB182LX,315 uniquely combines Band A–optimized C-ratio (22), sub-1Ω series resistance, and industry-smallest SOD882T footprint-making it the only option meeting all three requirements for high-density VHF tuner designs.
Availability
BB182LX,315 is available at Aetrix Electronics and suitable for VHF television tuners, voltage-controlled oscillators, and electronic tuning modules requiring stable component supply, tight capacitance matching, and ultra-compact packaging.
Supply support for BB182LX,315 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 electronics.
The BB182LX,315 belongs to NXP's RF varactor diode product line, engineered specifically for high-precision, high-density VHF tuning in broadcast receiver front-ends and compact oscillator modules.
FAQ
What is the maximum reverse voltage rating for BB182LX,315?
The BB182LX,315 has an absolute maximum reverse voltage (VR) rating of 32 V per IEC 60134. Operation up to 28 V is specified in characterization data, ensuring reliable junction behavior and minimal capacitance drift. Exceeding 32 V risks permanent breakdown and must be avoided in all BB182LX,315 designs.
How does the 2 % DMA matching of BB182LX,315 improve VCO performance?
The 2 % DMA matching across a 5-diode sequence in BB182LX,315 ensures consistent capacitance vs. voltage curves between paired devices. This reduces amplitude imbalance and common-mode phase error in differential VCO architectures, directly lowering close-in phase noise and improving channel selectivity in BB182LX,315-based tuners.
Is BB182LX,315 compatible with reflow soldering processes?
Yes, the BB182LX,315 in SOD882T package is qualified for standard lead-free reflow profiles (J-STD-020). Its 0.4 mm height and thermally robust planar die support peak temperatures up to 260 °C for ≤ 30 seconds. Verified thermal cycling performance ensures reliability after BB182LX,315 assembly into high-volume tuner modules.
What is the typical series resistance (rs) of BB182LX,315 at 100 MHz?
The BB182LX,315 exhibits a typical series resistance (rs) of ≤ 1.0 Ω at 100 MHz and Cd = 30 pF, as measured per Figure 2 in the datasheet. This low rs preserves Q-factor in VHF tank circuits-critical for achieving <−100 dBc/Hz phase noise in BB182LX,315-based oscillator designs.
Can BB182LX,315 be used in UHF applications above 300 MHz?
The BB182LX,315 is characterized and optimized for VHF Band A (up to 160 MHz); its C–V linearity and rs performance degrade above 200 MHz. While functional in some UHF prototypes, NXP specifies no guaranteed parameters beyond 160 MHz. For UHF, alternatives like BBY52,115 are validated-BB182LX,315 should not be selected for new UHF designs.
BB182LX,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 2.89pF @ 28V, 1MHz
- Capacitance Ratio:
- 22.0
- Capacitance Ratio Condition:
- C1/C28
- Voltage - Peak Reverse (Max):
- 32 V
- Diode Type:
- Single
- Q @ Vr, F:
- -
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD2
BB182LX,315 FAQ
1.How can I place an order for BB182LX,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BB182LX,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 BB182LX,315 reliable?
The price and inventory of BB182LX,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB182LX,315 is usually 5 days.
3.What payment methods are accepted for BB182LX,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB182LX,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BB182LX,315?
BB182LX,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BB182LX,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 BB182LX,315?
For technical support, including BB182LX,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB182LX,315 requirements.
6.How does Aetrix verify that BB182LX,315 is sourced from the original manufacturer or authorized distributors?
All BB182LX,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 BB182LX,315 meets industry standards.
7.What is the process for return or replacement of BB182LX,315?
All BB182LX,315 units undergo pre-shipment inspection (PSI). If there is an issue with BB182LX,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 BB182LX,315 part is unused and in its original packaging.
Return procedure for BB182LX,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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