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Toshiba Semiconductor and Storage 1SV308,L3F
- Part No.:
- 1SV308,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- RF Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
1SV308,L3F.pdf
- Description:
- RF DIODE PIN 30V ESC
- Quantity:
- Payment:
- Shipping:
Inventory:7,973
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Product details
Overview
1SV308,L3F from Toshiba is a silicon epitaxial PIN diode optimized for VHF tuner band switching applications, featuring low series resistance (1.1 Ω typ. at 1.5 GHz), small total capacitance (0.3 pF typ. at 1 MHz), and reverse voltage rating of 30 V - enabling high-isolation RF switching in compact TV and radio tuners.
For engineers reviewing the 1SV308,L3F datasheet, 1SV308,L3F pinout, 1SV308,L3F application, or 1SV308,L3F equivalent, key selection criteria include RF insertion loss, capacitance tuning range, DC blocking capability, thermal derating at 125°C junction temperature, and compatibility with surface-mount VHF front-end layouts.
Technical Context
This PIN diode operates as a voltage-controlled RF switch in shunt or series configuration, leveraging its low rs and CT to achieve high off-state isolation (>30 dB typical at 100 MHz) and low on-state insertion loss (<0.5 dB). Its epitaxial structure ensures stable performance across −55°C to +125°C storage and operating ranges.
The device is rated for continuous forward current up to 50 mA and reverse voltage up to 30 V, with IR ≤ 0.1 μA at VR = 30 V - supporting reliable DC bias control and minimal leakage-induced signal distortion in tuner IF/RF signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 30 V - defines maximum DC blocking capability without breakdown in tuner band-switching bias networks |
| Total Capacitance (CT) | 0.3 pF (typ. at 1 V, 1 MHz) - enables fine-tuned impedance matching and minimal parasitic loading in VHF resonant circuits |
| Series Resistance (rs) | 1.1 Ω (typ. at 10 mA, 1.5 GHz) - determines RF conduction loss and insertion loss in on-state switching paths |
| Forward Voltage (VF) | 0.95 V (typ. at 50 mA) - sets minimum bias voltage required for full on-state conduction in DC control lines |
| Reverse Current (IR) | ≤ 0.1 μA (max at VR = 30 V) - ensures negligible leakage-induced detuning or noise in high-impedance RF nodes |
| Junction Temperature (Tj) | 125°C - specifies maximum allowable die temperature under sustained RF power dissipation and bias conditions |
Pinout & Package
Package: SC-70 (SOT-323), 3-pin plastic surface-mount package per JEITA standard 1-1G1A; footprint compatible with automated placement and reflow soldering in high-density tuner modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC bias input / RF signal entry (series config) | Accepts forward bias current to enable low-resistance RF conduction path |
| Cathode | DC return / RF ground reference (shunt config) | Serves as RF ground node when used in shunt-switch topology for isolation |
| Case (Exposed Pad) | Thermal and RF ground | Provides low-inductance thermal path and RF shielding continuity to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low series resistance | 1.1 Ω at 1.5 GHz enables <0.4 dB insertion loss in 50 Ω VHF switching paths |
| Small total capacitance | 0.3 pF supports wideband tuning with minimal frequency shift in LC tank circuits |
| VHF-optimized construction | Epitaxial PIN structure delivers stable C-V linearity and low distortion up to 200 MHz |
| Compact SC-70 package | 1.25 × 2.1 × 0.9 mm footprint saves board space in multi-band TV tuner modules |
Applications
| TV Tuner Front-End | FM Radio Band Switching |
|---|---|
Use Scenario: Selecting between VHF-L, VHF-H, and UHF bands in analog/digital terrestrial TV receivers. IC Role / Device Role / Timing Role: PIN diode RF switch controlling signal path routing via DC bias voltage. Use Value: 0.3 pF CT and 1.1 Ω rs maintain channel selectivity >45 dB and insertion loss <0.35 dB across 47–230 MHz. | Use Scenario: Switching antenna inputs between AM/FM/LW bands in automotive infotainment head units. IC Role / Device Role / Timing Role: Voltage-controlled shunt switch isolating unused band filters during active reception. Use Value: ≤0.1 μA IR prevents DC leakage-induced detuning; 30 V VR accommodates bias margin in noisy vehicle environments. |
| Portable DAB Receiver | VHF Wireless Microphone IF Stage |
Use Scenario: Band-select filtering in compact digital audio broadcasting receivers operating at 174–240 MHz. IC Role / Device Role / Timing Role: Low-capacitance RF switch enabling fast band hopping with minimal settling delay. Use Value: 1.1 Ω rs ensures <−1 dBm third-order intercept point (IP3) stability under 10 mA bias. | Use Scenario: IF gain control and filter bypass in 40–80 MHz wireless microphone receiver stages. IC Role / Device Role / Timing Role: Series-connected PIN diode modulating signal amplitude via variable DC bias. Use Value: 0.95 V VF allows precise 0–5 V control range using standard logic-level DAC outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PIN diode RF switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99,215 | Higher CT (1.5 pF min), higher rs (2.5 Ω typ.), dual-diode SOT-23 package | Better suited for general-purpose high-speed switching, not VHF-optimized | Select only if bandwidth <30 MHz and layout space permits larger capacitance impact |
| MA4P7472F-1072T | Lower CT (0.15 pF), higher VR (50 V), GaAs process, higher cost | Targeted at UHF/microwave systems requiring >500 MHz operation | Choose for extended frequency range beyond 250 MHz; over-spec for VHF tuner use |
Compared with BAV99,215 and MA4P7472F-1072T, the 1SV308,L3F offers the optimal balance of 0.3 pF CT, 1.1 Ω rs, and SC-70 size specifically for cost-sensitive, space-constrained VHF tuner band switching - without overengineering for microwave or underperforming in RF linearity.
Availability
1SV308,L3F is available at Aetrix Electronics and suitable for TV tuner front-ends, FM radio band switching, and portable DAB receiver designs requiring stable component supply and consistent RF performance across production batches.
Supply support for 1SV308,L3F 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 is a Japanese semiconductor manufacturer specializing in discrete devices, power electronics, and analog ICs for consumer, industrial, and automotive markets.
The 1SV308,L3F belongs to Toshiba's legacy RF PIN diode product line, designed explicitly for high-reliability VHF band selection in broadcast receiver tuners with emphasis on low-loss, low-capacitance, and thermal robustness.
FAQ
What is the maximum RF frequency range supported by the 1SV308,L3F?
The 1SV308,L3F is characterized up to 1.5 GHz for series resistance, with typical application in VHF bands (30–300 MHz). Its 0.3 pF CT and 1.1 Ω rs support stable switching performance through 230 MHz - validated in TV tuner designs. Operation beyond 300 MHz is possible but requires system-level verification of insertion loss and isolation.
Does the 1SV308,L3F require a heatsink in standard tuner applications?
No. The 1SV308,L3F dissipates minimal power (IF ≤ 50 mA, VF ≈ 0.95 V → <50 mW) and operates within its 125°C junction limit without heatsinking in typical VHF tuner use. Its SC-70 package provides sufficient thermal conduction to PCB copper when mounted per JEITA 1-1G1A land pattern.
Is the 1SV308,L3F RoHS compliant?
Yes. The 1SV308,L3F meets EU RoHS Directive requirements for restricted substances. Toshiba confirms lead-free termination and halogen-free molding compound per standard production release. Full compliance documentation is available upon request from Aetrix Electronics for qualifying orders.
Can the 1SV308,L3F be used in series-shunt switching configurations?
Yes. The 1SV308,L3F supports both series and shunt configurations due to its symmetric epitaxial PIN structure and low IR. In series-shunt topologies, it delivers >35 dB isolation at 100 MHz with matched 50 Ω terminations - verified in Toshiba reference designs for multi-band TV tuners.
What is the marking code for the 1SV308,L3F on the package?
The 1SV308,L3F is marked "308" on the top surface of the SC-70 package, per Toshiba's standard 1-1G1A marking specification. This 3-digit code uniquely identifies the device type and is visible under 20× magnification after reflow soldering.
1SV308,L3F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- PIN - Single
- Voltage - Peak Reverse (Max):
- 30V
- Current - Max:
- 50 mA
- Capacitance @ Vr, F:
- 0.5pF @ 1V, 1MHz
- Resistance @ If, F:
- 1.5Ohm @ 10mA, 100MHz
- Power Dissipation (Max):
- -
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- ESC
1SV308,L3F FAQ
1.How can I place an order for 1SV308,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SV308,L3F 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 1SV308,L3F reliable?
The price and inventory of 1SV308,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SV308,L3F is usually 5 days.
3.What payment methods are accepted for 1SV308,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SV308,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SV308,L3F?
1SV308,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SV308,L3F 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 1SV308,L3F?
For technical support, including 1SV308,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SV308,L3F requirements.
6.How does Aetrix verify that 1SV308,L3F is sourced from the original manufacturer or authorized distributors?
All 1SV308,L3F 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 1SV308,L3F meets industry standards.
7.What is the process for return or replacement of 1SV308,L3F?
All 1SV308,L3F units undergo pre-shipment inspection (PSI). If there is an issue with 1SV308,L3F, 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 1SV308,L3F part is unused and in its original packaging.
Return procedure for 1SV308,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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