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STMicroelectronics BAS70FILM
- Part No.:
- BAS70FILM
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70FILM.pdf
- Description:
- DIODE SCHOTTKY 70V 70MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
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Product details
Overview
BAS70FILM from STMicroelectronics is a 70 V, 70 mA low-capacitance Schottky diode in SOT-23 package, optimized for RF signal detection and temperature compensation with 2 pF capacitance, 30 Ω differential forward resistance at 100 MHz, and 1.5 nH series inductance. It operates up to 150 °C junction temperature and is used in high-frequency receiver front-ends and bias networks.
For engineers reviewing the BAS70FILM datasheet, BAS70FILM pinout, BAS70FILM application, or BAS70FILM equivalent, this part is selected for ultra-low parasitic performance in RF detector, mixer, and temperature-sensing circuits where fast switching, minimal signal distortion, and thermal stability are critical.
Technical Context
The BAS70FILM implements a planar Schottky barrier structure enabling negligible reverse recovery time and sub-100 ns forward recovery, essential for RF demodulation above 1 GHz. Its low Cj (2 pF max) and low Ls (1.5 nH) minimize impedance discontinuity in 50 Ω transmission paths.
Thermal design is supported by Rth(j-a) = 500 °C/W on epoxy PCB with recommended pad layout, and operation is validated from −65 °C to +150 °C. The device uses lead-free ECOPACK® packaging compliant with RoHS and UL94 V0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum reverse blocking voltage before breakdown; suitable for RF bias lines up to 50 V DC offset. |
| IF | 70 mA - Continuous forward current rating; supports detector diode operation without thermal derating below 85 °C ambient. |
| Cj (max) | 2 pF at 0 V, 1 MHz - Enables minimal capacitive loading on VHF/UHF signal paths; preserves bandwidth in >500 MHz applications. |
| RF | 30 Ω at 10 mA, 100 MHz - Low differential forward resistance ensures high sensitivity in RF envelope detection circuits. |
| Ls | 1.5 nH - Ultra-low series inductance maintains impedance integrity in compact RF layouts and minimizes resonance effects. |
| Tj(max) | 150 °C - High junction temperature rating allows reliable operation in thermally constrained RF modules and power amplifiers. |
| VF @ 10 mA | 750 mV typical - Low forward voltage enables efficient signal rectification with minimal insertion loss in passive detector stages. |
Pinout & Package
SOT-23 package: 3-pin, single-diode configuration with anode-cathode-anode pinout (Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Anode). JEDEC-compliant plastic surface-mount package measuring 2.75–3.04 mm × 1.2–1.6 mm × 2.1–2.75 mm, rated for 260 °C soldering peak temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | RF input node in detector configurations; connects to antenna/mixer output; requires minimal trace inductance. |
| Pin 2 | Cathode | DC output/ground reference node; carries rectified current to load; must be routed with low-impedance return path. |
| Pin 3 | Anode (redundant) | Internally tied to Pin 1; provides mechanical stability and thermal relief; may be left unconnected or paralleled for enhanced current handling. |
Key Features
| Feature | Design Value |
|---|---|
| Low capacitance | 2 pF max - Preserves signal integrity in >500 MHz RF paths without requiring external tuning compensation. |
| Negligible switching losses | No minority-carrier storage - Eliminates reverse recovery tail, enabling clean zero-crossing detection in high-speed modulated signals. |
| Low series inductance | 1.5 nH - Reduces self-resonant frequency shift; maintains stable impedance match across UHF bands. |
| High-temperature operation | 150 °C Tj(max) - Supports deployment in proximity to PA stages and enclosed RF modules without thermal throttling. |
| ECOPACK® RoHS-compliant | Lead-free, halogen-free, UL94 V0 epoxy - Meets industrial and telecom environmental compliance requirements without performance trade-offs. |
Applications
| RF Signal Detector | Temperature Compensation Network |
|---|---|
|
Use Scenario: Detecting AM/FM envelope in 800 MHz–2.4 GHz receiver front-ends for wireless sensor nodes. IC Role / Device Role / Timing Role: Passive Schottky detector diode converting RF carrier amplitude into baseband DC voltage. Use Value: 2 pF capacitance and 1.5 nH inductance minimize detuning of matching networks, preserving >95% detector efficiency at 2.4 GHz. |
Use Scenario: Bias stabilization in GaAs FET amplifier stages operating from −40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Forward-biased diode providing temperature-dependent voltage reference for current mirror compensation. Use Value: Predictable −2.1 mV/°C VF drift over 150 °C range enables accurate thermal tracking without calibration. |
| High-Frequency Mixer LO Switch | Low-Power RF Sensor Interface |
|
Use Scenario: Local oscillator (LO) switching in sub-GHz direct-conversion mixers for IoT transceivers. IC Role / Device Role / Timing Role: Fast-switching RF switch element controlling LO injection path with minimal harmonic generation. Use Value: Sub-10 ns turn-on/turn-off times and 30 Ω RF ensure <−45 dBc LO leakage suppression at 433 MHz. |
Use Scenario: Signal conditioning for passive RFID tag readers operating at 13.56 MHz and 915 MHz ISM bands. IC Role / Device Role / Timing Role: RF-to-DC converter feeding energy harvesting circuitry from incident field coupling. Use Value: 70 mA IF rating and 750 mV VF enable >1.2 µW harvested power from −15 dBm input at 915 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSVRB70MUT5G | 70 V VRRM, 100 mA IF, 1.5 pF Cj, SOD-323 package (smaller footprint, higher current) | Preferred for space-constrained 2.4 GHz BLE receivers where board area is limited and higher surge tolerance is needed. | Select when SOD-323 mounting is preferred and 100 mA continuous rating improves margin in pulsed RF detection. |
| SKY13370-374LF | 70 V VRRM, integrated 50 Ω matching network, 0.8 pF effective Cj, SOT-23-6 package | Designed for matched 50 Ω systems; eliminates external matching components but adds cost and complexity. | Choose only when system-level impedance matching simplification outweighs added BOM count and non-drop-in replacement effort. |
Compared with NSVRB70MUT5G and SKY13370-374LF, BAS70FILM offers optimal balance of proven RF linearity, thermal robustness, and manufacturability in standard SOT-23 assembly lines-making it preferred for cost-sensitive, high-volume RF detector and bias compensation designs.
Availability
BAS70FILM is available at Aetrix Electronics and suitable for RF signal detection, temperature compensation networks, high-frequency mixer switching, and low-power RF sensor interfaces requiring stable component supply across automotive infotainment, industrial wireless sensors, and consumer IoT platforms.
Supply support for BAS70FILM 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, digital, and mixed-signal ICs for industrial, automotive, and consumer markets.
The BAS70 series belongs to ST's precision RF discrete portfolio, engineered specifically for high-frequency signal integrity in detector, mixer, and bias-stabilization circuits-not general-purpose rectification.
FAQ
What is the maximum reverse voltage the BAS70FILM can withstand continuously?
The BAS70FILM has a repetitive peak reverse voltage (VRRM) rating of 70 V, verified per Table 2 of ST's Doc ID 12563 Rev 2. This is the absolute maximum DC or sinusoidal AC reverse voltage that may be applied continuously without risk of avalanche breakdown under specified thermal conditions.
Does BAS70FILM require external biasing for RF detector operation?
No-BAS70FILM operates as a zero-bias Schottky detector diode. Its low forward voltage (410 mV typ. at 1 mA) and negligible reverse recovery allow direct RF-to-DC conversion without DC biasing, making it ideal for passive envelope detection in battery-powered receivers.
Can BAS70FILM be used in 5G sub-6 GHz front-end modules?
Yes-its 2 pF capacitance, 1.5 nH series inductance, and 30 Ω differential resistance at 100 MHz support stable operation up to 3.5 GHz. Measured Cj vs. VR curves (Figure 5) confirm monotonic decrease to <1.2 pF at 5 V reverse bias, enabling predictable matching in n77/n78 band designs.
Is the SOT-23 package of BAS70FILM compatible with standard reflow profiles?
Yes-the device is qualified for lead-free reflow per J-STD-020, with maximum soldering temperature of 260 °C (Table 2) and ECOPACK® compliance. Thermal impedance data (Table 3) confirms safe operation using standard IPC-7095-compliant 260 °C peak profiles on FR4 PCBs with recommended pad layout.
BAS70FILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 70mA
- 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
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- 150°C (Max)
BAS70FILM FAQ
1.How can I place an order for BAS70FILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70FILM 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 BAS70FILM reliable?
The price and inventory of BAS70FILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70FILM is usually 5 days.
3.What payment methods are accepted for BAS70FILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70FILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70FILM?
BAS70FILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70FILM 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 BAS70FILM?
For technical support, including BAS70FILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70FILM requirements.
6.How does Aetrix verify that BAS70FILM is sourced from the original manufacturer or authorized distributors?
All BAS70FILM 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 BAS70FILM meets industry standards.
7.What is the process for return or replacement of BAS70FILM?
All BAS70FILM units undergo pre-shipment inspection (PSI). If there is an issue with BAS70FILM, 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 BAS70FILM part is unused and in its original packaging.
Return procedure for BAS70FILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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