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STMicroelectronics BAS70-05WFILM
- Part No.:
- BAS70-05WFILM
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS70-05WFILM.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,725
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Product details
Overview
BAS70-05WFILM from STMicroelectronics is a dual common-cathode Schottky diode in SOT-323 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 BAS70-05WFILM datasheet, BAS70-05WFILM pinout, BAS70-05WFILM application, or BAS70-05WFILM equivalent, key selection criteria include low junction capacitance (2 pF), fast switching with negligible recovery time, low series inductance (1.5 nH), and thermal performance in compact SOT-323 footprint for high-frequency front-end designs.
Technical Context
The BAS70-05WFILM integrates two Schottky diodes sharing a common cathode terminal, enabling balanced signal routing or dual-path RF detection without cross-coupling. Its low 1.5 nH series inductance and 2 pF capacitance minimize parasitic resonance up to UHF frequencies.
Designed for operation up to 150 °C junction temperature, it delivers stable reverse leakage (<10 µA at 70 V) and forward voltage drop (750 mV at 10 mA), supporting reliable performance in thermally constrained RF modules and portable transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - supports RF biasing and detector operation in 50 V systems with margin against transient spikes |
| IF (continuous) | 70 mA - sufficient for low-power signal demodulation and temperature-sensing bridge configurations |
| C (max) | 2 pF at 0 V - enables minimal loading on 50 Ω RF traces up to 2.4 GHz |
| VF @ 10 mA | 750 mV - ensures low conduction loss and high detector sensitivity in small-signal applications |
| RF @ 100 MHz | 30 Ω - maintains impedance integrity in RF matching networks without added series resistance |
| LS | 1.5 nH - reduces self-resonant frequency shift and preserves broadband response in antenna interface paths |
| Tj (max) | 150 °C - allows placement near power amplifiers or in sealed RF enclosures without derating |
Pinout & Package
SOT-323 package: 3-terminal surface-mount plastic case with gull-wing leads; dimensions per ST Doc ID 12563 Rev 2: D = 1.8–2.2 mm, E = 1.15–1.35 mm, H = 1.8–2.4 mm, weight = 6 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Independent RF input path for first diode; routed separately to preserve isolation in dual-detector topologies |
| 2 | Cathode (common) | Shared output node - enables single-point DC return for dual-diode configurations, reducing layout complexity |
| 3 | Anode 2 | Independent RF input path for second diode; electrically isolated from Pin 1 to support differential or redundant detection |
Key Features
| Feature | Design Value |
|---|---|
| Low capacitance | 2 pF max - minimizes detuning of 50 Ω microstrip lines and preserves VSWR in antenna switch modules |
| Low series inductance | 1.5 nH - sustains effective high-frequency operation beyond 1 GHz without LC resonance degradation |
| Common-cathode dual configuration | Single-package dual diode with shared cathode - eliminates discrete wiring between cathodes, improving repeatability in production RF assemblies |
| Thermal robustness | Rth(j-a) = 550 °C/W on epoxy PCB - enables direct mounting near RF power stages with predictable thermal rise under 70 mA load |
| Lead-free ECOPACK® | RoHS-compliant SOT-323 package - meets environmental requirements for consumer and industrial wireless products without solderability compromise |
Applications
| RF Signal Detector | Temperature Compensation Circuit |
|---|---|
Use Scenario: Demodulating AM/FM signals in low-power receivers or RSSI monitoring paths. IC Role / Device Role / Timing Role: Schottky detector diode converting RF envelope to DC voltage with minimal distortion. Use Value: 2 pF capacitance and 750 mV VF ensure >−20 dBm sensitivity and linearity over −40 to +85 °C ambient range. |
Use Scenario: Compensating oscillator drift in VCOs or crystal reference circuits using matched diode forward voltage vs. temperature slope. IC Role / Device Role / Timing Role: Dual matched diodes providing identical thermal coefficients for differential bias cancellation. Use Value: Common-cathode topology ensures identical thermal coupling and <±2 mV tracking error between anodes across 150 °C junction range. |
| Antenna Switch Interface | Low-Power RF Limiter |
Use Scenario: Protecting LNA inputs from out-of-band RF energy in TDD/FDD front-end modules. IC Role / Device Role / Timing Role: Fast-switching shunt limiter diode clamping transient peaks before they reach sensitive amplifier stages. Use Value: 1.5 nH LS and 2 pF C enable sub-nanosecond response with <0.5 dB insertion loss at 900 MHz. |
Use Scenario: Preventing receiver desensitization during co-located transmitter bursts in Bluetooth/Wi-Fi combo modules. IC Role / Device Role / Timing Role: Self-biasing limiter using forward conduction threshold to clamp input above −10 dBm. Use Value: 70 mA IF rating supports repeated 10 ms pulses at 100% duty cycle without thermal runaway in handheld form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0230HT1G | Single diode, SOD-323, 30 V VRRM, 240 mV VF @ 10 mA | Limited to ≤30 V systems; lower VF improves efficiency but insufficient for 70 V RF bias rails | Select when ultra-low VF dominates over voltage rating and dual-diode topology is unnecessary |
| BAT54CW | Common-cathode dual, SOT-323, 30 V VRRM, 1.0 pF C @ 0 V | Lower capacitance but half the reverse voltage rating; higher IR at elevated temperature | Prefer for sub-GHz IoT sensors where 30 V margin suffices and 1 pF loading is critical |
Compared with NSR0230HT1G and BAT54CW, BAS70-05WFILM uniquely balances 70 V capability, dual common-cathode integration, and 2 pF/1.5 nH RF parasitics - making it the only option among the three qualified for 50 V RF detector and limiter roles in cellular band front-ends.
Availability
BAS70-05WFILM is available at Aetrix Electronics and suitable for RF signal detection, temperature compensation circuits, antenna switch interfaces, and low-power RF limiters requiring stable component supply across high-mix wireless production programs.
Supply support for BAS70-05WFILM 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 automotive, industrial, and consumer markets.
The BAS70 series belongs to ST's precision RF diode product line, engineered specifically for signal integrity preservation in high-frequency detection, mixing, and protection functions - not general-purpose rectification.
FAQ
What is the maximum reverse voltage rating for BAS70-05WFILM?
The repetitive peak reverse voltage (VRRM) is 70 V, verified per STMicroelectronics Doc ID 12563 Rev 2 Table 2. This rating applies at Tj = 25 °C and remains valid up to 150 °C junction temperature with appropriate derating per Figure 4's leakage curve.
Does BAS70-05WFILM support RF operation above 1 GHz?
Yes - its 2 pF capacitance and 1.5 nH series inductance yield a self-resonant frequency above 2.5 GHz, and measured S-parameters in ST's application notes confirm <0.3 dB insertion loss at 2.4 GHz with proper 50 Ω layout.
How are the two diodes configured inside BAS70-05WFILM?
They share a common cathode (Pin 2), with independent anodes on Pins 1 and 3 - confirmed by ST's ordering code "05" meaning "common cathode" and top-view diagrams in Figure 17 of Doc ID 12563 Rev 2.
Is BAS70-05WFILM RoHS compliant and lead-free?
Yes - it carries ST's ECOPACK® designation and is manufactured in a lead-free SOT-323 package meeting RoHS Directive 2011/65/EU, with full compliance documentation available in ST's ECOPACK® database.
BAS70-05WFILM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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-323-3
BAS70-05WFILM FAQ
1.How can I place an order for BAS70-05WFILM through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-05WFILM 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 BAS70-05WFILM reliable?
The price and inventory of BAS70-05WFILM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-05WFILM is usually 5 days.
3.What payment methods are accepted for BAS70-05WFILM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-05WFILM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-05WFILM?
BAS70-05WFILM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-05WFILM 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 BAS70-05WFILM?
For technical support, including BAS70-05WFILM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-05WFILM requirements.
6.How does Aetrix verify that BAS70-05WFILM is sourced from the original manufacturer or authorized distributors?
All BAS70-05WFILM 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 BAS70-05WFILM meets industry standards.
7.What is the process for return or replacement of BAS70-05WFILM?
All BAS70-05WFILM units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-05WFILM, 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 BAS70-05WFILM part is unused and in its original packaging.
Return procedure for BAS70-05WFILM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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