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Infineon Technologies BB535E7904HTSA1
- Part No.:
- BB535E7904HTSA1
- Manufacturer:
- Infineon Technologies
- Package:
- SC-76, SOD-323
- Datasheet:
-
BB535E7904HTSA1.pdf
- Description:
- DIODE VAR CAP 30V 20MA SOD-323
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
BB535E7904HTSA1 from NXP Semiconductors is a silicon tuning diode (varactor) designed for UHF-TV tuner front-end voltage-controlled oscillator (VCO) and RF filter tuning circuits. It delivers a capacitance range of 1.9–18.7 pF at 1 MHz across 1–28 V reverse bias, exhibits a high capacitance ratio CT₁/CT₂₈ = 8.2–9.8, and features low series inductance (0.6 nH) and low series resistance (0.58–0.75 Ω) for minimal RF loss in 470 MHz applications.
For engineers reviewing the BB535E7904HTSA1 datasheet, BB535E7904HTSA1 pinout, BB535E7904HTSA1 application, or BB535E7904HTSA1 equivalent, key selection criteria include its SOD323 package compatibility with high-density UHF layouts, tight capacitance matching (±0.15% over 7-diode sequence), RoHS-compliant Pb-free construction, and verified performance at 85 °C ambient for broadcast receiver thermal environments.
Technical Context
This varactor operates exclusively under reverse bias, where junction depletion width modulates capacitance nonlinearly with applied DC voltage. Its capacitance-voltage curve is characterized at 1 MHz and specified across VR = 1–28 V, enabling precise VCO gain (MHz/V) calibration in analog TV tuners.
The device uses an "in-line" matching assembly process to ensure exceptional inter-device capacitance uniformity-critical for multi-stage RF filters requiring matched tuning elements. Temperature coefficients are documented per bias point (e.g., TCC ≈ −50 ppm/°C at VR = 1 V), supporting stability analysis over −55 to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 1 V | 17.5–20 pF - sets minimum VCO frequency and low-band tuning range |
| Capacitance @ 28 V | 1.9–2.3 pF - defines maximum VCO frequency and high-band coverage |
| Capacitance Ratio CT₁/CT₂₈ | 8.2–9.8 - determines total VCO tuning bandwidth (≈3× octave) |
| Series Resistance @ 470 MHz | 0.58–0.75 Ω - limits Q-factor degradation and phase noise in resonant tanks |
| Series Inductance | 0.6 nH - contributes <1 Ω reactance up to 1.2 GHz, preserving HF usability |
| Reverse Voltage Rating | 30 V DC - supports standard 28 V tuner supply rails with 2 V margin |
| Operating Temperature | −55 to +150 °C - qualified for sealed outdoor TV tuner enclosures and reflow soldering |
Pinout & Package
BB535E7904HTSA1 is housed in a SOD323 surface-mount plastic package (JEDEC DO-216AA), measuring 1.7 × 1.3 × 0.9 mm, with cathode indicated by a band on terminal 2. The package supports automated placement and IR reflow (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode | DC bias input node; connected to tuning voltage source via high-impedance resistor |
| Terminal 2 | Cathode | RF signal path connection; tied to tank inductor or filter ground reference |
Key Features
| Feature | Design Value |
|---|---|
| High capacitance ratio | CT₁/CT₂₈ ≥ 8.2 enables wideband VCO design without switched capacitor banks |
| In-line capacitance matching | ±0.15% ∆CT/CT over 7-diode sequence ensures consistent filter response across production batches |
| Low series inductance | 0.6 nH minimizes self-resonance shift above 1 GHz, preserving UHF linearity |
| Pb-free RoHS compliance | Meets EU Directive 2011/65/EU; compatible with lead-free soldering profiles (peak 260 °C) |
| Extended temperature operation | Rated from −55 to +150 °C supports deployment in unventilated set-top box chassis |
Applications
| UHF Analog TV Tuner | Digital Terrestrial TV (DTT) Front-End |
|---|---|
Use Scenario: Voltage-controlled tuning of YIG-less VCOs in broadcast receiver IF stages. IC Role / Device Role / Timing Role: Varactor diode providing bias-dependent capacitance for oscillator frequency pulling. Use Value: Enables 470–862 MHz channel selection with <±50 kHz frequency drift over temperature due to tight C-V matching. |
Use Scenario: Tracking filter alignment in DVB-T/T2 tuner modules with dual-conversion architecture. IC Role / Device Role / Timing Role: Tuning element in switched-bandpass RF filters preceding first mixer. Use Value: Delivers <0.5 dB insertion loss variation across 174–230 MHz band using matched BB535 arrays. |
| FM Radio Receiver VCO | ISM Band Wireless Remote Tuning |
Use Scenario: Local oscillator generation in portable FM radios covering 76–108 MHz. IC Role / Device Role / Timing Role: Primary capacitance control element in Colpitts oscillator tank. Use Value: Achieves >100 kHz tuning sensitivity with <1.5° phase noise degradation at 10 kHz offset. |
Use Scenario: Remote-controlled frequency adjustment in 433 MHz ASK/OOK transmitter modules. IC Role / Device Role / Timing Role: Digitally tuned capacitor in PLL feedback loop with DAC-driven bias. Use Value: Supports 16-step coarse tuning with <2% capacitance step error across full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BB555E7904HTSA1 | Same SOD323 package; higher CT₁/CT₂₈ (9.8 max) but lower CT₁ (14.0 pF min) and tighter matching (±0.1%) | Better suited for narrow-channel DTT filters requiring ultra-low ∆C/C | Select when >9:1 tuning ratio and sub-0.2% matching are mandatory |
| BB535E7904HTSA1 (same part, alternate reel code) | Identical electrical specs and package; differs only in tape-and-reel packaging (3,000 vs. 8,000 pcs/reel) | No functional difference; used interchangeably in SMT line changeovers | Choose based on production lot size and feeder compatibility |
Compared with BB555E7904HTSA1, this part trades 2.5 pF lower minimum capacitance for broader tuning bandwidth; versus reel variants, it offers identical RF performance with optimized logistics for medium-volume tuner assembly.
Availability
BB535E7904HTSA1 is available at Aetrix Electronics and suitable for UHF-TV tuners, digital terrestrial receivers, and FM radio VCOs requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for BB535E7904HTSA1 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 leader focused on secure connectivity solutions for automotive, industrial, and consumer electronics, with core expertise in RF, power management, and interface technologies.
BB535E7904HTSA1 belongs to NXP's BB535/BB555 silicon tuning diode product line, engineered specifically for high-frequency analog tuning in broadcast receiver front-ends where capacitance linearity, thermal stability, and matching precision are critical.
FAQ
What is the maximum recommended reverse voltage for continuous operation?
The absolute maximum reverse voltage is 30 V DC at 25 °C, with a peak rating of 35 V. Operation above 28 V is discouraged in production designs due to accelerated IR increase beyond 85 °C ambient, as confirmed by reverse current curves showing >200 nA at VR = 30 V and TA = 85 °C.
Does BB535E7904HTSA1 support reflow soldering, and what profile is validated?
Yes, it is qualified for lead-free reflow per J-STD-020, with peak temperature up to 260 °C for ≤30 seconds. The SOD323 package withstands standard IR and convection profiles; moisture sensitivity level is MSL3, requiring dry-pack storage if opened >168 hours before assembly.
How is capacitance matching guaranteed across units?
Matching is achieved via NXP's proprietary "in-line" assembly process, where up to seven diodes are tested and binned sequentially on the same wafer strip. Data sheet specifies ±0.15% ∆CT/CT for BB535 at VR = 1–28 V, f = 1 MHz, verified per Application Note AN047.
Can BB535E7904HTSA1 be used in 1.2 GHz LTE front-end tuning?
No - while its series inductance (0.6 nH) yields low reactance up to ~1.2 GHz, measured capacitance roll-off and rising series resistance above 900 MHz degrade Q-factor below usable thresholds for LTE PA output matching. It is validated only for ≤862 MHz UHF-TV and FM bands.
BB535E7904HTSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Capacitance @ Vr, F:
- 2.3pF @ 28V, 1MHz
- Capacitance Ratio:
- 9.8
- 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-SOD323-3D
BB535E7904HTSA1 FAQ
1.How can I place an order for BB535E7904HTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BB535E7904HTSA1 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 BB535E7904HTSA1 reliable?
The price and inventory of BB535E7904HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB535E7904HTSA1 is usually 5 days.
3.What payment methods are accepted for BB535E7904HTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB535E7904HTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BB535E7904HTSA1?
BB535E7904HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BB535E7904HTSA1 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 BB535E7904HTSA1?
For technical support, including BB535E7904HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB535E7904HTSA1 requirements.
6.How does Aetrix verify that BB535E7904HTSA1 is sourced from the original manufacturer or authorized distributors?
All BB535E7904HTSA1 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 BB535E7904HTSA1 meets industry standards.
7.What is the process for return or replacement of BB535E7904HTSA1?
All BB535E7904HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BB535E7904HTSA1, 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 BB535E7904HTSA1 part is unused and in its original packaging.
Return procedure for BB535E7904HTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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