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NXP Semiconductors BB148,115
- Part No.:
- BB148,115
- Manufacturer:
- NXP Semiconductors
- Package:
- SC-76, SOD-323
- Datasheet:
-
BB148,115.pdf
- Description:
- DIODE VHF VAR CAP 30V SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,932
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Product details
Overview
BB148,115 from NXP Semiconductors is a VHF variable capacitance diode (varactor) fabricated in planar technology and housed in an SOD323 (SC-76) surface-mount package. It delivers 2.6 pF capacitance at 28 V reverse bias, a 15:1 capacitance ratio (Cd(1V)/Cd(28V)), ≤2 % gliding matching across 10-diode sequences, ≤0.9 Ω series resistance at 100 MHz, and supports tuning up to 460 MHz in band B TV tuners.
For engineers reviewing the BB148,115 datasheet, BB148,115 pinout, BB148,115 application, or BB148,115 equivalent, key selection criteria include reverse voltage range (0–30 V), capacitance linearity, matched-pair availability for VCO phase noise reduction, and SOD323 footprint compatibility with high-density RF layouts.
Technical Context
The BB148,115 operates as a reverse-biased junction capacitor whose depletion width-and thus capacitance-varies nonlinearly with applied DC tuning voltage. Its planar structure and Direct Matching Assembly (DMA) process ensure tight capacitance matching (≤2 %) across sequences, critical for balanced VCO cores and image-reject mixer tuning.
Designed for VHF operation up to 460 MHz, it exhibits low series resistance (≤0.9 Ω at 100 MHz, Cd = 12 pF) and stable temperature coefficient behavior (see Fig. 3), enabling predictable frequency pulling in oscillator loops without external compensation networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Cd @ 1 V | 36.8–41.8 pF - sets minimum oscillation frequency and tuning range lower bound in VCO designs |
| Cd @ 28 V | 2.4–2.75 pF (typ. 2.6 pF) - defines maximum oscillation frequency and tuning range upper bound |
| Capacitance Ratio | 14.5–15 - determines total VCO frequency tuning bandwidth (e.g., ~15× fmin to fmax) |
| Series Resistance rs | ≤0.9 Ω @ 100 MHz, Cd = 12 pF - limits Q-factor degradation and phase noise in resonant tank circuits |
| Reverse Voltage VR | 0–30 V - defines usable tuning voltage range; absolute max rating prevents junction breakdown |
| Matching Tolerance | ≤2 % over 10-diode gliding sequence - enables precise differential VCO core balancing without manual trimming |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package: 2-terminal, 1.35 × 0.80 × 0.45 mm body, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to tuning voltage reference (typically ground or bias rail); marking bar identifies this terminal |
| 2 | Anode | Connected to RF node (e.g., VCO tank inductor); reverse bias applied between anode and cathode |
Key Features
| Feature | Design Value |
|---|---|
| Excellent linearity | Capacitance vs. voltage curve optimized for reduced harmonic distortion in wide-tuning-range VCOs |
| DMA matching to 1 % | Factory-matched pairs available for differential VCO architectures requiring sub-1 % capacitance tracking |
| Low series resistance | ≤0.9 Ω minimizes resistive loss in high-Q LC tanks, preserving oscillator phase noise performance |
| VHF-optimized construction | Planar die geometry and SOD323 leadframe reduce parasitic inductance for stable operation up to 460 MHz |
Applications
| VHF Television Tuner (Band B) | Voltage-Controlled Oscillator (VCO) |
|---|---|
Use Scenario: Channel selection in analog/digital terrestrial TV receivers operating in Band B (up to 460 MHz). IC Role / Device Role / Timing Role: Varactor diode providing voltage-variable capacitance for resonant circuit tuning in front-end RF filters and local oscillator stages. Use Value: Enables precise, stable channel locking with <2 % inter-diode capacitance variation across matched groups, reducing alignment drift. |
Use Scenario: Frequency synthesis in wireless transceivers, test equipment, and signal generators. IC Role / Device Role / Timing Role: Core tuning element in LC-tank-based VCOs, where reverse bias voltage controls output frequency. Use Value: 15:1 capacitance ratio and ≤0.9 Ω rs support >100 MHz tuning bandwidth while maintaining low close-in phase noise. |
| FM Radio Tuning | RF Filter Trimming |
Use Scenario: Analog FM radio receivers requiring fine-grained station selection across 87.5–108 MHz band. IC Role / Device Role / Timing Role: Voltage-controlled reactance in LC resonators of RF amplifier and mixer input stages. Use Value: High Cd(1V)/Cd(28V) ratio ensures full-band coverage with single-supply tuning voltage (0–28 V), simplifying bias design. |
Use Scenario: Factory calibration and dynamic adjustment of bandpass/bandstop filter center frequencies in base stations and IoT radios. IC Role / Device Role / Timing Role: Adjustable shunt capacitance element in ladder or coupled-line filter topologies. Use Value: Tight 2 % gliding matching allows batch-trimming of multiple filters on one PCB without individual component replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BB158,115 | Unmatched version of same die; identical Cd, rs, VR specs but no DMA matching guarantee | Suitable for non-critical tuning where ±5 % capacitance variation is acceptable | Select BB158,115 when cost sensitivity outweighs need for matched pairs in VCO cores or image-reject mixers |
| SMV1233-011LF | Higher Cd(1V) = 47 pF, lower ratio = 10.5:1, SOD-523 package (smaller footprint) | Better for UHF (700–2700 MHz) VCOs needing higher Cmin; less suitable for 460 MHz+ Band B TV | Choose SMV1233-011LF only if target frequency exceeds 500 MHz and SOD-523 layout compatibility exists |
Compared with BB148,115, BB158,115 offers identical electrical specs without matching assurance, while SMV1233-011LF trades VHF-optimized ratio and stability for UHF-capable higher capacitance and smaller package-neither is pin-compatible, and both require layout verification.
Availability
BB148,115 is available at Aetrix Electronics and suitable for VHF television tuners, voltage-controlled oscillators, FM radio receivers, and RF filter trimming applications requiring stable component supply and traceable matched-pair sourcing.
Supply support for BB148,115 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 markets.
The BB148,115 belongs to NXP's RF varactor diode product line, engineered specifically for high-stability, high-linearity VHF tuning in broadcast and communications equipment where matched capacitance and low loss are critical.
FAQ
What is the maximum reverse voltage rating for BB148,115?
The BB148,115 has an absolute maximum reverse voltage (VR) rating of 30 V, per IEC 60134 limiting values. Operation above this voltage risks permanent junction breakdown. For reliable long-term use, design bias within 0–28 V, where capacitance is fully characterized and series resistance remains stable.
Does BB148,115 require special handling for ESD sensitivity?
Yes, BB148,115 is a planar silicon varactor diode with a PN junction susceptible to ESD damage. NXP specifies no explicit HBM rating in the datasheet, but standard Class 1A (≤250 V) handling per JESD22-A114 is recommended. Use grounded workstations, anti-static packaging, and avoid direct contact with pins during assembly.
Is BB148,115 suitable for automotive applications?
No, BB148,115 is not automotive-qualified. The NXP datasheet explicitly states that unless otherwise indicated, its products-including BB148,115-are not tested or warranted for automotive use. It lacks AEC-Q200 qualification and is intended for consumer/industrial VHF tuning only.
How is capacitance matching implemented for BB148,115?
BB148,115 achieves ≤2 % capacitance matching via gliding matching across 10-diode sequences and Direct Matching Assembly (DMA) processing. Matched units are delivered on tape in labeled groups; unmatched BB158,115 shares identical die but omits this screening step.
What is the typical series resistance of BB148,115 and why does it matter?
The BB148,115 has a typical series resistance (rs) of ≤0.9 Ω measured at 100 MHz with Cd = 12 pF. This low value preserves Q-factor in LC tank circuits, directly limiting phase noise in VCOs and insertion loss in tunable filters-higher rs would degrade both metrics.
BB148,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 2.75pF @ 28V, 1MHz
- Capacitance Ratio:
- 15.0
- Capacitance Ratio Condition:
- C1/C28
- Voltage - Peak Reverse (Max):
- 30 V
- Diode Type:
- Single
- Q @ Vr, F:
- -
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BB148,115 FAQ
1.How can I place an order for BB148,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BB148,115 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 BB148,115 reliable?
The price and inventory of BB148,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB148,115 is usually 5 days.
3.What payment methods are accepted for BB148,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB148,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BB148,115?
BB148,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BB148,115 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 BB148,115?
For technical support, including BB148,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB148,115 requirements.
6.How does Aetrix verify that BB148,115 is sourced from the original manufacturer or authorized distributors?
All BB148,115 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 BB148,115 meets industry standards.
7.What is the process for return or replacement of BB148,115?
All BB148,115 units undergo pre-shipment inspection (PSI). If there is an issue with BB148,115, 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 BB148,115 part is unused and in its original packaging.
Return procedure for BB148,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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