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Diodes Incorporated BAS21TWQ-7
- Part No.:
- BAS21TWQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BAS21TWQ-7.pdf
- Description:
- DIODE ARRAY GP 250V 200MA SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:2,152
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Product details
Overview
BAS21TWQ-7 from Diodes Incorporated is a dual-channel fast-switching surface-mount silicon switching diode array in SOT363 package, rated for 250V peak repetitive reverse voltage, 200mA forward current, and 50ns maximum reverse recovery time. It serves as a high-speed signal routing or clamping element in automotive power management and interface protection circuits.
For engineers reviewing the BAS21TWQ-7 datasheet, BAS21TWQ-7 pinout, BAS21TWQ-7 application, or BAS21TWQ-7 equivalent, key selection criteria include its AEC-Q101 qualification, low 100nA reverse leakage at 200V, 5pF junction capacitance at 6V, and thermal resistance of 417°C/W - all critical for high-reliability 12V/24V automotive subsystems.
Technical Context
The BAS21TWQ-7 integrates two independent high-voltage switching diodes in a single SOT363 package, sharing no internal connection between anodes or cathodes. Each diode exhibits matched electrical characteristics with VF ≤ 1.25V at 200mA and tRR ≤ 50ns under standardized 6V reverse bias and 5mA forward test conditions.
Designed for automotive-grade reliability, it operates across –65°C to +150°C and sustains 250V non-repetitive peak reverse voltage. Its 300mW power dissipation rating assumes FR-4 board mounting with Diodes Incorporated's recommended pad layout, delivering stable performance under transient load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - Supports 12V/24V automotive bus clamping without breakdown during load dump transients |
| IF | 200 mA - Enables use in low-power signal-level switching and logic-level translation paths |
| tRR | 50 ns max - Ensures minimal switching loss and clean edge integrity in 1–10 MHz digital signal routing |
| CT | 5 pF at 6V - Limits capacitive loading on high-speed data lines such as CAN FD stubs or sensor interfaces |
| IR | 100 nA at 200V - Maintains low standby current in always-on vehicle modules like body control units |
| RθJA | 417 °C/W - Requires minimal PCB copper area for thermal relief in space-constrained ECUs |
Pinout & Package
SOT363 (SC-88) 6-pin plastic package with gull-wing leads; dimensions: 2.15 × 2.10 × 1.00 mm (L × W × H); moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first high-speed switching path; connects to signal source or rail clamp point |
| 2 | Cathode of Diode 1 | Output node for Diode 1; routed to protected IC input or ground reference |
| 3 | NC | No internal connection; electrically isolated; may be left unconnected or used as mechanical anchor |
| 4 | Cathode of Diode 2 | Output node for second independent switching path; supports dual-rail or redundant protection |
| 5 | Anode of Diode 2 | Input node for second high-speed switching path; enables independent signal routing per channel |
| 6 | NC | No internal connection; electrically isolated; not bonded internally; no thermal or electrical function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD-HBM ≥ 2kV |
| Lead-free & halogen-free | Meets RoHS 2 (2011/65/EU) and JEDEC JS709C green standards (<900ppm Br+Cl, <1000ppm Sb) |
| Low thermal resistance | 417°C/W junction-to-ambient enables operation up to +150°C ambient without derating in sealed enclosures |
| Matched dual diodes | Identical VF, tRR, and CT across channels simplifies differential signal conditioning design |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Clamping LIN bus transceiver I/O pins against ESD and load-dump-induced transients in door module ECUs. IC Role / Device Role: Fast-switching bidirectional transient suppressor placed between transceiver and connector. Use Value: 50ns tRR ensures clamping activation before IC damage threshold is exceeded; 250V VRRM withstands ISO 7637-2 Pulse 5a. | Use Scenario: Protecting analog front-end inputs of 4–20mA current-loop sensors in factory automation PLCs. IC Role / Device Role: Reverse-polarity and overvoltage protection diode pair at signal entry point. Use Value: Dual independent channels allow separate protection for signal and return paths; 100nA IR prevents measurement drift in µA-level sensing circuits. |
| Automotive Infotainment Power Sequencing | USB 2.0 Data Line ESD Clamp |
Use Scenario: Controlling power-up sequence of display backlight drivers and audio amplifiers using discrete diode-based OR-ing. IC Role / Device Role: High-speed isolation diode enabling controlled voltage ramp and fault containment. Use Value: 200mA IF rating supports typical 100–150mA backlight driver enable paths; matched VF ensures balanced sequencing timing. | Use Scenario: Low-capacitance ESD protection on D+ and D− lines of USB 2.0 host ports in telematics gateways. IC Role / Device Role: Signal-line transient suppressor with minimal data-integrity impact. Use Value: 5pF CT avoids signal rise-time degradation beyond USB 2.0 specification limits; SOT363 footprint fits tight 0.65mm pitch routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2016LFG-7 | Single-channel SOT-23 MOSFET-based load switch; no reverse recovery, but higher RDS(on) and gate drive dependency | Replaces diode function only when active control and ultra-low forward drop are required | Select only if system requires programmable ON/OFF control and can accommodate gate bias circuitry |
| BAT54CW-7-F | 30V VRRM, 200mA IF, 5ns tRR, same SOT363 package; lower voltage rating but faster switching | Suitable for 3.3V/5V logic-level protection where 250V capability is unnecessary | Prefer for consumer or industrial low-voltage interfaces needing sub-10ns recovery |
Compared with DMN2016LFG-7 and BAT54CW-7-F, the BAS21TWQ-7 uniquely balances high-voltage robustness (250V), automotive qualification, and dual-channel integration - making it irreplaceable in 12V/24V ECU signal conditioning where both voltage margin and channel independence are mandatory.
Availability
BAS21TWQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interface protection, and infotainment power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAS21TWQ-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 BAS21TWQ-7 belongs to Diodes' AEC-Q101-qualified discrete diode product line, engineered specifically for signal integrity and transient protection in harsh automotive environments.
FAQ
What is the maximum operating temperature for BAS21TWQ-7?
The BAS21TWQ-7 is rated for continuous operation from –65°C to +150°C junction temperature. Its thermal resistance of 417°C/W allows full 300mW power dissipation only at 25°C ambient; derating is required above that, per Figure 1 in DS38635 Rev. 2–2.
Is BAS21TWQ-7 suitable for bidirectional ESD protection?
No - the BAS21TWQ-7 contains two independent unidirectional diodes (anode-cathode pairs). For true bidirectional ESD clamping, external series/parallel configurations or purpose-built TVS arrays like D3V3Z5U2P are required.
Does BAS21TWQ-7 have matched characteristics between its two diodes?
Yes - datasheet electrical characteristics (VF, tRR, CT, IR) are specified per element and measured on the same die. Matching is inherent to monolithic dual-diode construction, enabling consistent behavior in differential or redundant signal paths.
Can BAS21TWQ-7 replace BAS21 in through-hole designs?
No - while electrically similar, BAS21TWQ-7 uses SOT363 surface-mount packaging versus BAS21's DO-35 axial leaded package. Direct replacement requires PCB redesign, reflow process validation, and verification of thermal performance under new mounting conditions.
BAS21TWQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 3 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 250 V
- Current - Average Rectified (Io) (per Diode):
- 200mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 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:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BAS21TWQ-7 FAQ
1.How can I place an order for BAS21TWQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21TWQ-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 BAS21TWQ-7 reliable?
The price and inventory of BAS21TWQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21TWQ-7 is usually 5 days.
3.What payment methods are accepted for BAS21TWQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21TWQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21TWQ-7?
BAS21TWQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21TWQ-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 BAS21TWQ-7?
For technical support, including BAS21TWQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21TWQ-7 requirements.
6.How does Aetrix verify that BAS21TWQ-7 is sourced from the original manufacturer or authorized distributors?
All BAS21TWQ-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 BAS21TWQ-7 meets industry standards.
7.What is the process for return or replacement of BAS21TWQ-7?
All BAS21TWQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS21TWQ-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 BAS21TWQ-7 part is unused and in its original packaging.
Return procedure for BAS21TWQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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