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Diodes Incorporated BAS21DWAQ-7
- Part No.:
- BAS21DWAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
BAS21DWAQ-7.pdf
- Description:
- DIODE ARRAY GP 250V 100MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
BAS21DWAQ-7 from Diodes Incorporated is an AEC-Q101-qualified dual high-voltage switching diode in SOT353 package, featuring 250 V repetitive peak reverse voltage (VRRM), 200 mA forward current (IF), and 50 ns reverse recovery time (trr). It serves as a fast-switching signal routing or clamping element in automotive power management and sensor interface circuits.
For engineers reviewing the BAS21DWAQ-7 datasheet, BAS21DWAQ-7 pinout, BAS21DWAQ-7 application, or BAS21DWAQ-7 equivalent, key selection criteria include its 250 V VRRM, 50 ns trr, AEC-Q101 qualification, SOT353 footprint compatibility, and dual-common-cathode configuration for space-constrained automotive signal conditioning.
Technical Context
This dual diode integrates two independent high-voltage junctions in a single SOT353 package with common cathode connection (Pin 3). Its 250 V VRRM supports operation in 24 V automotive systems with transient margin, while 50 ns trr enables use in <10 MHz digital signal clamping and waveform shaping.
The device delivers 285 mW power dissipation at 25°C ambient and maintains stable leakage (<100 µA at 200 V, 150°C) across -55°C to +150°C, meeting under-hood temperature requirements without derating below 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - Withstands load-dump transients up to ISO 7637-2 Pulse 5a in 24 V automotive systems |
| trr | 50 ns - Enables clean edge preservation in digital signal routing up to 10 MHz |
| IF | 200 mA - Supports continuous current in sensor biasing and logic-level translation paths |
| CT | 0.7–5.0 pF @ 0 V - Low capacitance minimizes signal distortion in RF-adjacent analog front-ends |
| IR @ 200 V | 30 nA @ 25°C, 100 µA @ 150°C - Ensures low leakage in high-impedance voltage monitoring circuits |
| VF @ 20 mA | 0.90–1.05 V - Predictable forward drop simplifies voltage reference and level-shifting design |
Pinout & Package
SOT353 (SC-70-5) surface-mount package: 2.2 mm × 2.1 mm × 0.95 mm body, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input node for first diode path; routed to external signal source or pull-up network |
| 2 | Anode 2 | Input node for second diode path; enables dual-signal clamping from separate sources |
| 3 | Cathode (Common) | Shared output node tied to ground or reference rail; defines dual-cathode topology |
| 4 | No Connect | Internally isolated terminal; must remain unconnected per datasheet |
| 5 | Not Used | Unused pad; no internal connection; may be left floating or grounded for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications with full PPAP support |
| 250 V VRRM | Provides 3× margin over 24 V nominal bus, enabling robust protection against ISO 7637-2 transients |
| 50 ns trr | Reduces switching loss and overshoot in high-speed digital I/O protection networks |
| ESD rating | HBM ≤ 4 kV / MM ≤ 400 V - Survives handling and board-level ESD events without parameter shift |
| Green construction | Halogen- and antimony-free, RoHS 3 compliant - meets EU automotive environmental compliance mandates |
Applications
| Automotive Sensor Signal Conditioning | 24 V Bus Transient Clamping |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to 24 V supply rails in engine control units. IC Role / Device Role / Timing Role: Dual-clamp diode limiting input voltage excursions to ±0.7 V beyond rail during load dump or jump-start events. Use Value: Prevents op-amp input stage damage while maintaining <100 nA leakage at 125°C for accurate DC offset stability. | Use Scenario: Shunting ISO 7637-2 Pulse 5a transients (up to 100 V, 100 ms) on LIN or CAN physical layer lines. IC Role / Device Role / Timing Role: Fast-recovery clamping element diverting surge current away from transceiver IC inputs. Use Value: 50 ns trr ensures clamping activation before transceiver latch-up threshold is exceeded. |
| Digital Logic Level Translation | High-Speed Data Line Protection |
Use Scenario: Bidirectional voltage translation between 3.3 V microcontroller GPIO and 5 V peripheral I/O in ADAS domain controllers. IC Role / Device Role / Timing Role: Passive clamp diode enabling safe voltage domain crossing without active circuitry. Use Value: 0.90–1.05 V VF at 20 mA provides predictable threshold for reliable logic state detection. | Use Scenario: ESD and overvoltage protection on USB 2.0 D+/D− lines in infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance (0.7–5.0 pF) shunt diode preserving signal integrity up to 480 Mbps. Use Value: Sub-5 pF capacitance avoids eye diagram closure while meeting IEC 61000-4-2 Level 4 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAS21DW-7 | Same electrical specs and SOT353 package; lacks AEC-Q101 qualification and PPAP documentation | Approved only for industrial/commercial use; not certified for automotive production | Select when AEC-Q101 compliance is not required and cost sensitivity is higher |
| DMT3002LSDQ-7 | Higher VRRM (300 V), lower trr (35 ns), but larger SOT-363 package and different pinout (dual-anode) | Requires PCB redesign; better suited for 48 V mild-hybrid systems | Choose for next-gen 48 V architectures where faster switching and higher voltage margin are critical |
Compared with BAS21DWAQ-7, BAS21DW-7 offers identical performance at lower qualification cost, while DMT3002LSDQ-7 trades package compatibility for enhanced 300 V/35 ns capability-making the former ideal for cost-driven non-automotive designs and the latter for future 48 V platforms requiring tighter timing margins.
Availability
BAS21DWAQ-7 is available at Aetrix Electronics and suitable for automotive sensor interfaces, 24 V bus clamping, and digital level translation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAS21DWAQ-7 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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BAS21DWAQ-7 belongs to Diodes' AEC-Q101-qualified discrete diode product line, engineered specifically for under-hood automotive signal integrity and transient protection in harsh environments.
FAQ
What is the pin configuration of BAS21DWAQ-7?
It uses a 5-pin SOT353 package with Pin 1 = Anode 1, Pin 2 = Anode 2, Pin 3 = Common Cathode, Pin 4 = No Connect, and Pin 5 = Not Used. The dual-anode/common-cathode topology allows independent signal clamping paths sharing one return node.
Does BAS21DWAQ-7 support operation at 150°C?
Yes. It is rated for continuous operation from -55°C to +150°C, with specified IR ≤ 100 µA at VR = 200 V and TJ = +150°C. Power dissipation must be derated above 25°C per the 435°C/W RθJA curve.
How does BAS21DWAQ-7 differ from standard BAS21DWA-7?
BAS21DWAQ-7 adds automotive-specific qualification: full AEC-Q101 stress testing, PPAP documentation readiness, and traceable lot control. Electrically and thermally, both share identical parameters and SOT353 packaging.
Can BAS21DWAQ-7 replace single-diode packages in existing designs?
Yes, when dual clamping or signal routing is needed-but requires verifying PCB layout compatibility with SOT353's 5-pin footprint and confirming that the NC and unused pins are correctly handled per the datasheet's mechanical drawings.
BAS21DWAQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 2 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 250 V
- Current - Average Rectified (Io) (per Diode):
- 100mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 200 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
BAS21DWAQ-7 FAQ
1.How can I place an order for BAS21DWAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21DWAQ-7 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 BAS21DWAQ-7 reliable?
The price and inventory of BAS21DWAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21DWAQ-7 is usually 5 days.
3.What payment methods are accepted for BAS21DWAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21DWAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21DWAQ-7?
BAS21DWAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21DWAQ-7 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 BAS21DWAQ-7?
For technical support, including BAS21DWAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21DWAQ-7 requirements.
6.How does Aetrix verify that BAS21DWAQ-7 is sourced from the original manufacturer or authorized distributors?
All BAS21DWAQ-7 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 BAS21DWAQ-7 meets industry standards.
7.What is the process for return or replacement of BAS21DWAQ-7?
All BAS21DWAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS21DWAQ-7, 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 BAS21DWAQ-7 part is unused and in its original packaging.
Return procedure for BAS21DWAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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