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Toshiba Semiconductor and Storage 1SV311(TPH3,F)
- Part No.:
- 1SV311(TPH3,F)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- SC-79, SOD-523
- Datasheet:
-
1SV311(TPH3,F).pdf
- Description:
- DIODE VARACTOR 10V ESC
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
1SV311(TPH3,F) from Toshiba is a silicon epitaxial planar varactor diode optimized for UHF-band voltage-controlled oscillators (VCOs) in radio tuners, featuring a typical capacitance ratio C1V/C4V of 2.1, series resistance rs of 0.28 Ω at 470 MHz, and nominal capacitance of 9.7–11.1 pF at 1 V reverse bias.
For engineers reviewing the 1SV311(TPH3,F) datasheet, 1SV311(TPH3,F) pinout, 1SV311(TPH3,F) application, or 1SV311(TPH3,F) equivalent, key selection criteria include UHF tuning linearity, low RF loss in compact tuner modules, reverse voltage rating up to 10 V, junction temperature limit of 125°C, and compatibility with miniature surface-mount layouts.
Technical Context
This varactor diode operates by varying junction capacitance with applied reverse bias-enabling frequency tuning in UHF oscillator circuits. Its epitaxial planar structure ensures stable C-V characteristics and low series resistance critical for high-Q resonant tank performance.
The device is rated for 10 V maximum reverse voltage and 125°C maximum junction temperature, with guaranteed leakage current ≤3 nA at VR = 10 V. Capacitance is specified at 1 MHz (C1V, C4V), and series resistance is measured at 470 MHz under 1 V bias-directly reflecting real-world UHF tuning efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance Ratio C1V/C4V | Typ. 2.1 - enables wide tuning range in compact UHF VCO designs |
| Capacitance C1V | 9.7–11.1 pF @ VR = 1 V, f = 1 MHz - sets baseline tank capacitance at low bias |
| Capacitance C4V | 4.45–5.45 pF @ VR = 4 V, f = 1 MHz - defines minimum capacitance for max frequency swing |
| Series Resistance rs | Typ. 0.28 Ω @ VR = 1 V, f = 470 MHz - minimizes RF insertion loss and phase noise degradation |
| Max Reverse Voltage VR | 10 V - limits tuning voltage range and ensures safe operation in tuner bias networks |
| Max Junction Temp Tj | 125°C - constrains thermal design margin in densely packed tuner modules |
Pinout & Package
Package: SOD-323 (JEDEC DO-212AA), surface-mount, 2-terminal cathode-anode configuration. Dimensions per Toshiba drawing: 1.7 × 1.3 × 0.9 mm (L × W × H), weight 0.0014 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward-biased terminal during DC bias application | Connected to ground or low-impedance bias node in VCO tuning network |
| Cathode | Reverse-biased terminal for capacitance control | Connected to tuning voltage (Vtune); polarity must be maintained to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| High C1V/C4V ratio | Typ. 2.1 - delivers >100% relative frequency tuning range in UHF LC tanks |
| Low RF series resistance | 0.28 Ω at 470 MHz - preserves Q-factor above 100 in practical VCO inductors |
| Miniature SOD-323 package | 1.7 × 1.3 mm footprint - supports high-density layout in portable radio tuner modules |
| Low leakage current | ≤3 nA @ 10 V - prevents tuning voltage drift and long-term frequency instability |
Applications
| UHF TV Tuner Modules | FM/AM Radio Front-Ends |
|---|---|
Use Scenario: Integrated into ceramic or PCB-based LC tank circuits for channel selection in digital terrestrial TV receivers operating 470–862 MHz. IC Role / Device Role / Timing Role: Varactor diode providing voltage-variable capacitance to shift VCO center frequency across UHF bands. Use Value: Enables single-component tuning with 2.1:1 C-ratio and sub-0.3 Ω RF loss-reducing need for calibration or trim caps. | Use Scenario: Used in dual-band (FM 87–108 MHz / AM 520–1610 kHz) portable radios for local oscillator frequency synthesis. IC Role / Device Role / Timing Role: Tuning element in Colpitts or Clapp oscillator topologies, biased via DAC or potentiometer. Use Value: Low rs and tight C-tolerance ensure stable startup and minimal phase noise at VHF/UHF boundaries. |
| Wireless Microphone Transmitters | ISM Band (433/868 MHz) Transceivers |
Use Scenario: Frequency-agile transmitter stage in professional wireless microphones requiring ±500 kHz deviation at 600–900 MHz. IC Role / Device Role / Timing Role: Primary tuning diode in voltage-controlled crystal oscillator (VCXO) or LC-VCO architecture. Use Value: C1V/C4V ≥ 1.8 guarantees sufficient modulation depth without external varactor stacking. | Use Scenario: Embedded in sub-GHz IoT transceiver reference oscillators for smart metering and sensor networks. IC Role / Device Role / Timing Role: Bias-controlled capacitance element in PLL loop filter or VCO tank for frequency hopping. Use Value: 125°C Tj rating supports operation in sealed outdoor enclosures with passive thermal management. |
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 | C1V/C4V = 2.0 (typ.), rs = 0.35 Ω @ 500 MHz, SOD-523 package (1.3 × 0.8 mm) | Smaller footprint but higher rs degrades Q above 700 MHz | Prefer when board space is constrained and UHF operation stays below 650 MHz |
| SMV1232-011 | C1V/C4V = 2.3 (min), rs = 0.25 Ω @ 500 MHz, SC-79 package (1.3 × 0.9 mm) | Higher min C-ratio improves tuning linearity; tighter rs spec benefits low-phase-noise designs | Choose for demanding VCOs where C-ratio consistency and RF loss are prioritized over legacy footprint compatibility |
Compared with BBY52-02W and SMV1232-011, the 1SV311(TPH3,F) offers a balanced trade-off: proven UHF stability in SOD-323, moderate C-ratio tolerance (1.8–2.1), and industry-standard thermal rating-making it suitable for cost-sensitive tuner modules where layout reuse matters.
Availability
1SV311(TPH3,F) is available at Aetrix Electronics and suitable for UHF TV tuners, portable radio front-ends, and wireless microphone transmitters requiring stable component supply, consistent C-V characteristics, and RoHS-compliant packaging.
Supply support for 1SV311(TPH3,F) 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and analog ICs for consumer, industrial, and communications markets.
The 1SV311(TPH3,F) belongs to Toshiba's legacy varactor diode product line, engineered specifically for compact, high-frequency tuning applications in broadcast and wireless receiver systems.
FAQ
What is the primary function of the 1SV311(TPH3,F) in RF circuits?
The 1SV311(TPH3,F) functions as a voltage-controlled variable capacitor (varactor diode) in UHF-band oscillator and filter circuits. Its junction capacitance changes with applied reverse bias, enabling electronic frequency tuning-especially in VCOs for TV tuners and radio receivers. The 1SV311(TPH3,F) achieves this with a typical C1V/C4V ratio of 2.1 and low 0.28 Ω series resistance at 470 MHz.
Does the 1SV311(TPH3,F) support operation above 1 GHz?
No-the 1SV311(TPH3,F) is characterized and optimized for UHF-band operation up to 900 MHz. Its series resistance (rs = 0.28 Ω typ. at 470 MHz) and capacitance specifications are validated only up to 1 MHz for C-measurement and 470 MHz for rs; no datasheet data supports reliable performance at L/S/C-band or microwave frequencies. For >1 GHz use, consider modern GaAs or SiC varactors with verified GHz-range parameters.
What is the marking code for the 1SV311(TPH3,F)?
The 1SV311(TPH3,F) is marked "1G1A" on the device body per Toshiba's JEITA standard 1-1G1A designation. This two-character alphanumeric code identifies the part on the SOD-323 package and corresponds to the full type number 1SV311 in Toshiba's ordering system. The "(TPH3,F)" suffix denotes tape-and-reel packaging per JIS C 0806.
Can the 1SV311(TPH3,F) be used in automotive-grade tuner modules?
The 1SV311(TPH3,F) is not qualified for automotive applications. Its datasheet specifies a junction temperature limit of 125°C and excludes AEC-Q200 stress testing or automotive reliability screening. Toshiba explicitly restricts use in transportation equipment-including automobiles-per its "Restrictions on Product Use." For automotive tuners, select AEC-Q200-qualified varactors with extended temperature range (−40°C to +150°C) and certified failure rate data.
How does the 1SV311(TPH3,F) compare to newer varactor diodes in terms of C-V linearity?
The 1SV311(TPH3,F) provides moderate C-V linearity with a typical C1V/C4V ratio of 2.1, but it lacks published C-V curve data or gamma (γ) exponent values-unlike modern varactors such as the SMV1232-011, which specify γ ≈ 0.75 for improved tuning linearity. As a result, the 1SV311(TPH3,F) may require additional compensation circuitry in precision frequency-synthesizer applications where constant Kvco is required.
1SV311(TPH3,F) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Capacitance @ Vr, F:
- 5.45pF @ 4V, 1MHz
- Capacitance Ratio:
- 2.1
- Capacitance Ratio Condition:
- C1/C4
- Voltage - Peak Reverse (Max):
- 10 V
- Diode Type:
- Single
- Q @ Vr, F:
- -
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ESC
1SV311(TPH3,F) FAQ
1.How can I place an order for 1SV311(TPH3,F) through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SV311(TPH3,F) 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 1SV311(TPH3,F) reliable?
The price and inventory of 1SV311(TPH3,F) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SV311(TPH3,F) is usually 5 days.
3.What payment methods are accepted for 1SV311(TPH3,F)?
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4.How is shipping managed for 1SV311(TPH3,F)?
1SV311(TPH3,F) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SV311(TPH3,F) 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 1SV311(TPH3,F)?
For technical support, including 1SV311(TPH3,F) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SV311(TPH3,F) requirements.
6.How does Aetrix verify that 1SV311(TPH3,F) is sourced from the original manufacturer or authorized distributors?
All 1SV311(TPH3,F) 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 1SV311(TPH3,F) meets industry standards.
7.What is the process for return or replacement of 1SV311(TPH3,F)?
All 1SV311(TPH3,F) units undergo pre-shipment inspection (PSI). If there is an issue with 1SV311(TPH3,F), 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 1SV311(TPH3,F) part is unused and in its original packaging.
Return procedure for 1SV311(TPH3,F):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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