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Diodes Incorporated BAS70W-04Q-7-F
- Part No.:
- BAS70W-04Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BAS70W-04Q-7-F.pdf
- Description:
- DIODE ARR SCHOTT 70V 70MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,454
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Product details
Overview
BAS70W-04Q-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode optimized for low-voltage, high-speed switching in power management circuits. It features 70 V peak repetitive reverse voltage (VRRM), 70 mA forward current (IO), 410 mV max forward voltage at 1 mA, 100 nA max reverse leakage at 50 V, and 5.0 ns reverse recovery time - enabling use in compact DC-DC converters and freewheeling paths.
For engineers reviewing the BAS70W-04Q-7-F datasheet, BAS70W-04Q-7-F pinout, BAS70W-04Q-7-F application, or BAS70W-04Q-7-F equivalent, key selection criteria include ultra-low VF for efficiency-critical 3.3 V/5 V rail clamping, AEC-Q101 qualification for automotive-grade reliability, SOT323 footprint constraints, and sub-2 pF junction capacitance for RF-adjacent signal integrity.
Technical Context
This Schottky diode employs a planar epitaxial structure with PN junction guard ring to suppress transient-induced failure and ESD damage - critical for unregulated input stages in automotive body electronics. Its low 0.41 V turn-on threshold minimizes conduction loss in low-VIN buck converter catch diodes and reverse polarity protection circuits.
The device operates across –55 °C to +125 °C and delivers stable 5 ns tRR under IF = IR = 10 mA conditions, supporting >1 MHz switching frequencies. Thermal resistance of 625 °C/W (RθJA) reflects its SOT323 package's thermal limitations - requiring careful PCB copper area allocation in sustained 70 mA operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - supports blocking in 48 V automotive subsystems and 24 V industrial control inputs |
| IO | 70 mA - rated continuous forward current for space-constrained auxiliary rails |
| VF (max) | 410 mV @ 1 mA - enables <100 mW conduction loss in 3.3 V logic-level protection |
| IR (max) | 100 nA @ 50 V - ensures minimal standby leakage in battery-backed circuits |
| tRR | 5.0 ns - allows clean commutation in >1 MHz DC-DC topologies without ringing |
| CT | 2.0 pF @ 0 V - preserves signal integrity in high-frequency sensing nodes near power switches |
| RθJA | 625 °C/W - requires ≥25 mm² 1-oz copper pad for full 70 mA derating at +85 °C ambient |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount case (2.15 × 2.10 × 0.95 mm), lead-free matte tin plating, moisture sensitivity level 1, weight 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to positive side of load or switch node; must route with low-inductance trace in high-dI/dt freewheeling paths |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Typically tied to ground or low-side switch; serves as clamp reference for reverse polarity protection |
| Collector / Heat Sink (Pin 3) | Thermal and electrical common | Internally connected to cathode; soldered to PCB copper pour for thermal relief and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Low turn-on voltage | 410 mV max at 1 mA - reduces power loss by >30% vs. standard silicon diodes in 3.3 V systems |
| Fast switching | 5 ns reverse recovery - eliminates switching spikes in 1–2 MHz synchronous rectifier designs |
| PN junction guard ring | ESD robustness per AEC-Q101 - withstands ±8 kV HBM without parameter shift |
| AEC-Q101 qualification | Automotive-grade reliability - validated for 1000-hour HTOL at 125 °C and temperature cycling –55/+125 °C |
| Green compound packaging | Halogen- and antimony-free molding - meets IEC 61249-2-21 for eco-compliant PCB assembly |
Applications
| SMPS Secondary Side | DC-DC Converter Catch Diode |
|---|---|
Use Scenario: High-efficiency 5 V → 3.3 V buck converter in automotive infotainment head units. IC Role / Device Role / Timing Role: Freewheeling diode during low-side MOSFET off-time; conducts inductor current until next switching cycle. Use Value: 410 mV VF cuts conduction loss by 45% vs. 1N4148, improving full-load efficiency from 82% to 86.5%. | Use Scenario: Input protection circuit for USB-C PD sink controller in industrial handheld meters. IC Role / Device Role / Timing Role: Reverse polarity protection diode placed between connector and LDO input. Use Value: 100 nA IR at 5 V prevents >1 µA battery drain in always-on sleep mode. |
| Automotive Body Control Module | RF-Sensitive Signal Clamping |
Use Scenario: Load dump suppression on LIN bus transceiver power rail in door module ECUs. IC Role / Device Role / Timing Role: Blocking diode isolating main 12 V supply from protected 5 V regulator during transient events. Use Value: 70 V VRRM withstands ISO 7637-2 Pulse 5a (120 V/100 ms) without breakdown. | Use Scenario: ESD clamp on antenna feedline of UWB radar sensor interface. IC Role / Device Role / Timing Role: Low-capacitance shunt diode protecting RF amplifier input from IEC 61000-4-2 contact discharge. Use Value: 2.0 pF CT avoids detuning 6–8 GHz UWB bandpass filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T2R | 30 V VRRM, 200 mA IO, 0.33 V VF @ 1 mA - lower voltage rating but higher current and lower VF | Not suitable for 48 V automotive inputs; better for 3.3/5 V consumer DC-DC where higher surge tolerance is needed | Select when system VIN ≤ 24 V and peak IF exceeds 70 mA |
| SBAT54LT1G | 30 V VRRM, 200 mA IO, 0.45 V VF @ 10 mA - same SOT-23 package, higher VF at operating current | Lacks AEC-Q101 qualification; not approved for automotive under-hood use | Choose for cost-sensitive industrial controls where automotive qualification is unnecessary |
Compared with RB520S-30T2R and SBAT54LT1G, BAS70W-04Q-7-F uniquely balances 70 V blocking, AEC-Q101 compliance, and 0.41 V low-current VF - making it the only option qualified for 12/24/48 V automotive power rails requiring both transient robustness and micro-power standby performance.
Availability
BAS70W-04Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and USB-C power delivery protection circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAS70W-04Q-7-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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the US.
This device belongs to Diodes' AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power management and industrial signal integrity applications demanding low VF, fast tRR, and robust ESD immunity.
FAQ
What is the maximum junction temperature for continuous operation?
The BAS70W-04Q-7-F has an operating junction temperature range of –55 °C to +125 °C. At ambient temperatures above +85 °C, power dissipation must be derated linearly from 200 mW using the 625 °C/W thermal resistance - reaching zero dissipation at +125 °C ambient per the published derating curve.
Is this diode suitable for reverse polarity protection in 24 V battery-powered equipment?
Yes - with 70 V VRRM, it safely blocks reverse connection of 24 V batteries including load dump transients up to 60 V. Its 100 nA IR at 24 V ensures negligible standby current, and the AEC-Q101 qualification confirms reliability under vibration and thermal cycling typical of portable industrial tools.
How does the PN junction guard ring improve real-world reliability?
The integrated guard ring suppresses edge breakdown during ESD events and voltage transients by distributing electric field stress away from the active junction perimeter. This design enables consistent 8 kV HBM ESD performance and prevents parametric drift after repeated ISO 10605 discharges - critical for factory automation I/O modules exposed to frequent human handling.
Can BAS70W-04Q-7-F replace BAS70-04 in existing SOT-23 designs?
No - BAS70W-04Q-7-F uses SOT323 (2.15 × 2.10 mm), while BAS70-04 uses SOT-23 (2.9 × 1.3 mm). The pin pitch (0.65 mm vs. 0.95 mm) and pad layout are incompatible. A board redesign is required to accommodate the smaller SOT323 footprint and revised thermal pad configuration.
BAS70W-04Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BAS70W-04Q-7-F FAQ
1.How can I place an order for BAS70W-04Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70W-04Q-7-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 BAS70W-04Q-7-F reliable?
The price and inventory of BAS70W-04Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70W-04Q-7-F is usually 5 days.
3.What payment methods are accepted for BAS70W-04Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70W-04Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70W-04Q-7-F?
BAS70W-04Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70W-04Q-7-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 BAS70W-04Q-7-F?
For technical support, including BAS70W-04Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70W-04Q-7-F requirements.
6.How does Aetrix verify that BAS70W-04Q-7-F is sourced from the original manufacturer or authorized distributors?
All BAS70W-04Q-7-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 BAS70W-04Q-7-F meets industry standards.
7.What is the process for return or replacement of BAS70W-04Q-7-F?
All BAS70W-04Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS70W-04Q-7-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 BAS70W-04Q-7-F part is unused and in its original packaging.
Return procedure for BAS70W-04Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70W-04Q-7-F Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
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BAV99,215
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BAV70LT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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