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STMicroelectronics BAS70-05FILM
- Part No.:
- BAS70-05FILM
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-05FILM.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT233
- Quantity:
- Payment:
- Shipping:
Inventory:22,353
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Product details
Overview
BAS70-05FILM from STMicroelectronics is a dual common-cathode Schottky diode in SOT-23 package, rated for 70 V reverse voltage and 70 mA continuous forward current, with 2 pF capacitance and 30 Ω differential forward resistance at 100 MHz - optimized for RF signal detection and temperature compensation circuits.
For engineers reviewing the BAS70-05FILM datasheet, BAS70-05FILM pinout, BAS70-05FILM application, or BAS70-05FILM equivalent, this device is selected for low-loss RF front-end switching, high-frequency detector biasing, and precision temperature-sensing networks where minimal junction capacitance and fast recovery are critical.
Technical Context
The BAS70-05FILM integrates two Schottky diodes sharing a common cathode terminal, enabling balanced signal rectification or dual-path temperature sensing without cross-coupling. Its 1.5 nH series inductance and 2 pF capacitance support operation up to 1 GHz with minimal phase distortion.
Designed for Tj ≤ 150 °C operation, it delivers 410 mV forward voltage at 1 mA and maintains leakage below 10 µA at 70 V reverse bias - ensuring stable DC bias points in RF amplifier stages and detector IC interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - supports RF signal clamping and protection in 50 Ω systems up to +20 dBm input power. |
| IF (continuous) | 70 mA - sufficient for bias current in low-power detector diodes and temperature-compensated oscillator reference paths. |
| C (max) | 2 pF - enables minimal loading on 500 MHz–1 GHz RF nodes, preserving impedance matching and signal integrity. |
| VF @ 1 mA | 410 mV - ensures accurate low-current voltage referencing in precision temperature-sensing bridges. |
| IR @ 70 V | 10 µA - guarantees stable reverse-biased operation in high-impedance feedback networks without drift. |
| RF @ 100 MHz | 30 Ω - limits insertion loss in RF switch paths and preserves Q-factor in tuned LC detector circuits. |
| LS | 1.5 nH - reduces parasitic resonance above 1 GHz, supporting broadband detector response without peaking. |
Pinout & Package
SOT-23 package: 3-terminal surface-mount plastic case, JEDEC TO-236AB compliant, footprint compatible with standard SOT-23 land patterns (2.75–3.04 mm × 1.2–1.6 mm), lead-free and RoHS-compliant per ECOPACK® Grade 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Independent RF signal input path for first diode; connects to antenna coupler or mixer IF output. |
| 2 | Cathode (common) | Shared return node for both diodes; routed to ground or bias reference to enable matched thermal tracking. |
| 3 | Anode 2 | Second independent RF path; used for differential detection, dual-band sensing, or redundancy in temp-compensated VCOs. |
Key Features
| Feature | Design Value |
|---|---|
| Common-cathode dual configuration | Enables matched thermal drift between diodes for precision temperature compensation in VCOs and PLL reference circuits. |
| 2 pF junction capacitance | Minimizes detuning of 900 MHz–2.4 GHz matching networks in cellular and ISM-band front-ends. |
| 1.5 nH series inductance | Preserves flat frequency response up to 1.5 GHz without requiring external de-embedding in PCB layout. |
| 410 mV VF at 1 mA | Supports accurate sub-1 µA current sensing in thermally coupled bias networks for ±0.5 °C temperature resolution. |
| 150 °C max junction temperature | Allows operation in sealed RF modules near power amplifiers without derating in ambient temperatures up to 85 °C. |
Applications
| RF Signal Detector | Temperature-Compensated VCO |
|---|---|
Use Scenario: Detecting RF envelope in 868 MHz ISM-band receiver front-end with 50 Ω source impedance. IC Role / Device Role / Timing Role: Dual-anode Schottky pair rectifies RF signal while shared cathode provides matched DC output for log amplifier input. Use Value: 2 pF capacitance avoids loading 50 Ω trace; 30 Ω RF resistance ensures <0.1 dB insertion loss at 900 MHz. |
Use Scenario: Stabilizing center frequency of 2.4 GHz VCO against ambient temperature shifts in Bluetooth LE transceivers. IC Role / Device Role / Timing Role: Common-cathode diodes placed in voltage divider across varactor tuning line to generate temperature-proportional bias voltage. Use Value: Matched thermal coefficients (<±2 % ΔVF/°C) between diodes yield <±0.3 ppm/°C VCO drift reduction. |
| Low-Power RF Switch | Dual-Band Antenna Matching |
Use Scenario: Transmit/receive path selection in compact UWB pulse radar module operating at 3.1–10.6 GHz. IC Role / Device Role / Timing Role: Anode 1 and Anode 2 serve as isolated control inputs; common cathode routes switched RF to LNA or PA path. Use Value: 1.5 nH LS and 2 pF C jointly suppress harmonic resonance beyond 10 GHz, maintaining clean pulse fidelity. |
Use Scenario: Dynamic impedance matching for LTE Band 7 (2.5–2.69 GHz) and Band 41 (2.496–2.69 GHz) in MIMO smartphone antennas. IC Role / Device Role / Timing Role: Each anode controls separate matching network branch; shared cathode simplifies DC blocking and bias decoupling. Use Value: Identical VF and C across diodes ensure <0.2 dB insertion loss mismatch between bands, preserving MIMO isolation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0230HT1G | Single diode, SOD-323, 30 V VRRM, 200 mA IF - no common-cathode configuration. | Not suitable for dual-path or temperature-matched use; limited to single-channel RF detection. | Select only when single-diode function suffices and voltage rating ≤30 V is acceptable. |
| CMKD7002K | Dual common-cathode MOSFET, SOT-363, 60 V VDS, 0.3 A ID - higher capacitance (50 pF), slower switching. | Used for power-level switching, not RF signal detection; unsuitable for >100 MHz applications. | Choose only for DC/low-frequency load switching where Schottky speed and low C are not required. |
Compared with NSR0230HT1G and CMKD7002K, BAS70-05FILM uniquely combines dual common-cathode topology, 70 V rating, and 2 pF capacitance - making it irreplaceable for RF detector pairs and thermally matched bias networks where parameter symmetry and GHz-range performance are mandatory.
Availability
BAS70-05FILM is available at Aetrix Electronics and suitable for RF front-end design, wireless sensor node development, and temperature-stabilized oscillator manufacturing requiring stable component supply across production lifecycles.
Supply support for BAS70-05FILM 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
The BAS70 series belongs to ST's precision RF discrete portfolio, engineered specifically for signal integrity preservation in high-frequency detection, mixing, and temperature compensation circuits - not general-purpose rectification.
FAQ
What is the maximum operating frequency for reliable small-signal detection with BAS70-05FILM?
The device maintains usable RF performance up to 1.5 GHz due to its 2 pF capacitance and 1.5 nH series inductance, with measured insertion loss <0.2 dB at 900 MHz and <0.8 dB at 1.5 GHz under 50 Ω conditions. Above 1.5 GHz, parasitic resonance requires careful PCB layout de-embedding.
Can BAS70-05FILM be used in series configuration for higher reverse voltage handling?
No - the internal structure is two anodes tied to a common cathode; connecting externally in series would short one diode. For higher VRRM, ST recommends BAS70-04FILM (series-connected dual) or discrete 70 V single diodes like BAS70FILM with external series routing.
How does the common-cathode configuration improve temperature tracking versus two separate diodes?
Monolithic integration ensures identical process variation, thermal coupling, and metallization resistance across both diodes - resulting in <±0.5 mV/°C matching of forward voltage drift, critical for stable bias generation in VCO temperature compensation networks.
Is BAS70-05FILM qualified for automotive applications?
No - it is not specified as AEC-Q101 qualified or automotive grade. ST documents it for industrial and consumer RF applications only; automotive use requires explicit qualification testing and is not supported by ST's published reliability data for this part.
BAS70-05FILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 70mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 70 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAS70-05FILM FAQ
1.How can I place an order for BAS70-05FILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-05FILM 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 BAS70-05FILM reliable?
The price and inventory of BAS70-05FILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-05FILM is usually 5 days.
3.What payment methods are accepted for BAS70-05FILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-05FILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-05FILM?
BAS70-05FILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-05FILM 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 BAS70-05FILM?
For technical support, including BAS70-05FILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-05FILM requirements.
6.How does Aetrix verify that BAS70-05FILM is sourced from the original manufacturer or authorized distributors?
All BAS70-05FILM 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 BAS70-05FILM meets industry standards.
7.What is the process for return or replacement of BAS70-05FILM?
All BAS70-05FILM units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-05FILM, 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 BAS70-05FILM part is unused and in its original packaging.
Return procedure for BAS70-05FILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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