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Diodes Incorporated BAS21DWA-7
- Part No.:
- BAS21DWA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
BAS21DWA-7.pdf
- Description:
- DIODE ARRAY GP 250V 100MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
BAS21DWA-7 from Diodes Incorporated is a high-voltage dual switching diode in SOT353 package, rated for 250 V repetitive peak reverse voltage, 200 mA forward current, and 50 ns reverse recovery time. It serves as a fast-switching signal routing or clamping element in automotive and industrial power management circuits requiring AEC-Q101 reliability.
For engineers reviewing the BAS21DWA-7 datasheet, BAS21DWA-7 pinout, BAS21DWA-7 application, or BAS21DWA-7 equivalent, key selection criteria include reverse breakdown voltage, switching speed under 30 mA IF/IR conditions, thermal derating above 25°C, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This dual diode integrates two independent, isolated P-N junctions in a single SOT353 surface-mount package. Each diode supports 250 V VRRM, 200 mA IF, and exhibits 0.90–1.3 V forward voltage across 20–200 mA operating range.
Its 50 ns reverse recovery time (trr) and 0.7–5.0 pF total capacitance at 1 MHz enable use in high-frequency signal switching up to ~10 MHz. ESD robustness (HBM ≤ 4 kV, MM ≤ 400 V) and AEC-Q101 qualification confirm suitability for automotive body electronics and industrial control interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - Supports DC blocking or transient clamping in 12 V/24 V automotive systems without breakdown. |
| IF | 200 mA - Sustains continuous forward conduction in logic-level signal routing or low-power supply rail steering. |
| trr | 50 ns - Enables clean switching of digital signals up to 10 MHz without excessive ringing or cross-conduction. |
| CT | 0.7–5.0 pF @ 1 MHz - Minimizes capacitive loading on high-impedance sensor or clock signal paths. |
| VF | 0.90–1.3 V @ 20–200 mA - Ensures predictable forward drop in level-shifting or OR-ing applications with low thermal rise. |
| TJ Range | −55 to +150 °C - Validated operation across extended automotive and industrial ambient temperature profiles. |
Pinout & Package
SOT353 is a 5-pin, lead-free, halogen-free plastic package with 0.65 mm pitch, moisture sensitivity level 1, and UL 94V-0 flammability rating. Pin 1 and Pin 3 are anode terminals; Pin 2 is common cathode; Pins 4 and 5 are NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Input node for first switching path; connects to signal source or supply rail. |
| Pin 2 | Common Cathode | Shared output node for both diodes; ties to ground or return path in OR-gate configurations. |
| Pin 3 | Anode of Diode 2 | Independent input node for second switching path; enables dual-channel signal routing. |
| Pins 4 & 5 | No Connection | Electrically isolated; no PCB trace or solder pad required-reduces layout complexity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive body control modules, lighting drivers, and infotainment power sequencing. |
| Fast trr = 50 ns | Reduces switching loss and signal distortion in 1–10 MHz digital interface protection circuits. |
| VRRM = 250 V | Enables direct use in 24 V industrial PLC inputs and CAN bus protection stages without external voltage dividers. |
| HBM ESD ≥ 4 kV | Eliminates need for discrete ESD suppressors in exposed I/O lines of automotive sensors and actuators. |
Applications
| Automotive Body Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Voltage clamping and signal steering in door module microcontroller I/O protection. IC Role / Device Role / Timing Role: Dual-diode clamp protecting MCU GPIO pins from load-dump transients and ESD events. Use Value: Single SOT353 device replaces two discrete diodes, reducing board area by 40% and eliminating matching tolerance errors. | Use Scenario: Bidirectional signal isolation between 3.3 V sensor IC and 24 V fieldbus transceiver. IC Role / Device Role / Timing Role: Level-shifting diode pair enabling safe communication across voltage domains without level translators. Use Value: 50 ns trr preserves signal integrity up to 5 MHz, supporting fast analog-to-digital sampling synchronization. |
| Power Supply OR-ing | High-Voltage Signal Routing |
Use Scenario: Redundant 12 V supply selection in telematics head units with automatic failover. IC Role / Device Role / Timing Role: Dual-anode, common-cathode configuration implements passive OR gate for dual-input power rails. Use Value: 0.90 V VF at 20 mA minimizes voltage drop and heat generation during steady-state operation. | Use Scenario: High-side switch control signal conditioning in motor driver gate drive circuits. IC Role / Device Role / Timing Role: Fast-recovery diode routing PWM signals while blocking negative flyback spikes from MOSFET drains. Use Value: 250 V VRRM withstands inductive kickback up to 200 V, eliminating need for Zener snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-voltage switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAS21DW-7 | Same electrical specs but not AEC-Q101 qualified; lacks PPAP documentation. | Acceptable for commercial-grade industrial controls, not automotive production. | Select when cost sensitivity outweighs automotive compliance requirements. |
| MMBD2102-7-F | Lower VRRM (200 V), faster trr (4 ns), same SOT353 package. | Suitable for 12 V-only systems needing ultra-fast switching; insufficient for 24 V load dump. | Choose only if system max reverse voltage stays below 180 V and sub-10 ns recovery is critical. |
Compared with BAS21DWA-7, BAS21DW-7 sacrifices automotive qualification for lower cost, while MMBD2102-7-F trades voltage margin for nanosecond-scale speed-making BAS21DWA-7 optimal for AEC-Q101-compliant 24 V systems demanding balanced voltage, speed, and reliability.
Availability
BAS21DWA-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, power supply OR-ing circuits, and high-voltage signal routing requiring stable component supply and full AEC-Q101 traceability.
Supply support for BAS21DWA-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 BAS21DWA-7 belongs to Diodes' AEC-Q101-qualified switching diode product line, designed specifically for automotive power management and signal integrity applications where voltage robustness and fast recovery are essential.
FAQ
What is the maximum junction temperature for continuous operation?
The BAS21DWA-7 is rated for continuous operation from −55 °C to +150 °C junction temperature. Derating begins at +25 °C ambient, with power dissipation linearly reduced to zero at +150 °C per the published derating curve (RθJA = 435 °C/W on FR-4).
Is the SOT353 package compatible with standard reflow profiles?
Yes-the SOT353 package is rated for moisture sensitivity level 1 (MSL-1) and supports JEDEC J-STD-020-compliant reflow profiles, including peak temperatures up to 260 °C for ≤ 30 seconds. Matte tin plating ensures reliable solder wetting on lead-free pastes.
How does the common-cathode configuration affect circuit design?
The common-cathode topology allows both diodes to share a single return path, simplifying PCB layout in OR-ing and clamping applications. It eliminates the need for separate cathode traces, reduces parasitic inductance, and maintains consistent forward voltage matching between channels.
Can BAS21DWA-7 replace BAS21 in existing designs?
No-BAS21 uses SOT23-3 packaging with different pinout and thermal characteristics. BAS21DWA-7's SOT353 has five pins (including NC), higher VRRM, and AEC-Q101 qualification. Direct replacement requires layout revision and validation of thermal performance under identical mounting conditions.
BAS21DWA-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
BAS21DWA-7 FAQ
1.How can I place an order for BAS21DWA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21DWA-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 BAS21DWA-7 reliable?
The price and inventory of BAS21DWA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21DWA-7 is usually 5 days.
3.What payment methods are accepted for BAS21DWA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21DWA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21DWA-7?
BAS21DWA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21DWA-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 BAS21DWA-7?
For technical support, including BAS21DWA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21DWA-7 requirements.
6.How does Aetrix verify that BAS21DWA-7 is sourced from the original manufacturer or authorized distributors?
All BAS21DWA-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 BAS21DWA-7 meets industry standards.
7.What is the process for return or replacement of BAS21DWA-7?
All BAS21DWA-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS21DWA-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 BAS21DWA-7 part is unused and in its original packaging.
Return procedure for BAS21DWA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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