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Nexperia USA Inc. BAS21QC-QZ
- Part No.:
- BAS21QC-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BAS21QC-QZ.pdf
- Description:
- DIODE GP 200V 250MA DFN1412D-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
BAS21QC-Q from Nexperia is a high-voltage switching diode in a DFN1412D-3 (SOT8009) leadless SMD package, rated for 250 V repetitive peak reverse voltage (VRRM), 250 mA forward current (IF), and 50 ns reverse recovery time (trr). It serves as a fast, low-leakage clamping or polarity protection device in automotive power rails and DC-DC converter feedback paths.
For engineers reviewing the BAS21QC-Q datasheet, BAS21QC-Q pinout, BAS21QC-Q application, or BAS21QC-Q equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, side-wettable flank packaging details, thermal resistance values, and real-world switching use cases - all grounded in Nexperia's official 2025 product data sheet.
Technical Context
This diode employs a planar silicon epitaxial construction optimized for high-speed switching with minimal charge storage. Its 5 pF capacitance at 0 V and 1 MHz enables stable operation in high-frequency snubber and clamp circuits up to 100 MHz.
The device operates across −55 °C to +150 °C junction temperature, with reverse leakage held to ≤100 nA at 200 V and 25 °C, and ≤100 µA at 200 V and 150 °C - critical for maintaining signal integrity in automotive body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 250 V - supports 24 V and 48 V automotive systems with ≥2× safety margin against transients. |
| IF | 250 mA - sufficient for biasing, logic-level clamping, and low-power flyback snubbing without derating on FR4 PCB. |
| trr | 50 ns - enables clean switching in PWM frequencies up to 2 MHz without tail current interference. |
| IR @ 200 V, 25 °C | 100 nA - ensures negligible standby current drain in always-on vehicle modules like CAN wake-up receivers. |
| Cd @ 0 V, 1 MHz | 5 pF - minimizes capacitive loading on high-impedance nodes such as op-amp inputs or microcontroller reset lines. |
| Rth(j-a) | 285 K/W - defines thermal rise under free-air conditions; requires thermal pad for >100 mA continuous operation. |
| Package | DFN1412D-3 (SOT8009) - 1.4 mm × 1.2 mm × 0.48 mm body with side-wettable flanks for AOI-compatible reflow soldering. |
Pinout & Package
Encapsulated in a 3-terminal, leadless DFN1412D-3 (SOT8009) package with 0.8 mm pitch and side-wettable flanks for automated optical inspection. Package dimensions: 1.4 mm × 1.2 mm × 0.48 mm body height; 0.5 mm max overall height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to higher-potential node in clamping or rectification path. |
| 2 | Not Connected (n.c.) | Internally isolated terminal; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 | Cathode (K) | Forward current exit and reverse-blocking terminal; ties to reference or ground in polarity protection circuits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and cabin applications per stress test requirements including HTGB, HTRB, and TCT. |
| Side-wettable flanks | Enables automated optical inspection of solder joint quality on both lateral edges - essential for zero-defect automotive manufacturing. |
| Low profile (0.48 mm body) | Reduces board-level mechanical stress during thermal cycling and allows placement beneath low-clearance shields or connectors. |
| 150 °C max junction temperature | Supports operation in engine control units and ADAS ECUs where ambient temperatures exceed 105 °C. |
| FR4-compatible footprint | Standardized land pattern (1.3 mm × 0.75 mm cathode pad) ensures manufacturability without custom stencil design. |
Applications
| Automotive Body Control Module (BCM) | Industrial 48 V DC-DC Converter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V supply input to microcontroller-based door latch controller. IC Role / Device Role / Timing Role: Unidirectional blocking diode preventing damage during battery jump-start misconnection. Use Value: 200 V reverse rating and 100 nA leakage ensure no system reset or brown-out during cold-cranking transients. |
Use Scenario: Snubber diode across synchronous MOSFET gate driver in isolated flyback auxiliary supply. IC Role / Device Role / Timing Role: Fast-recovery clamp limiting voltage overshoot during MOSFET turn-off transitions. Use Value: 50 ns trr and 5 pF capacitance suppress ringing without adding propagation delay to gate drive timing. |
| Automotive Infotainment Power Sequencing | Smart Sensor Node Voltage Clamping |
Use Scenario: Voltage clamping on I²C bus lines exposed to ESD events in head unit display interface. IC Role / Device Role / Timing Role: Transient voltage suppressor shunting ESD pulses above 200 V while preserving signal integrity. Use Value: Low 5 pF capacitance avoids signal edge degradation on 400 kHz I²C clock line. |
Use Scenario: Overvoltage clamp on analog sensor output (e.g., pressure transducer) feeding ADC input. IC Role / Device Role / Timing Role: Precision rail-to-rail clamping diode limiting input to safe ADC range. Use Value: 1.25 V VF at 200 mA ensures predictable clamping threshold with minimal offset error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS20201MR6T1G | Same DFN1412-6 package but dual configuration; single diode section has VRRM = 200 V, trr = 50 ns, Cd = 6 pF. | Lacks AEC-Q101 qualification; rated only for industrial temp range (−55 °C to +125 °C). | Select when dual-diode layout simplifies routing but automotive qualification is not required. |
| Vishay ES1J | DO-214AA package; VRRM = 600 V, IF = 1 A, trr = 35 ns, but Cd = 25 pF and height = 2.3 mm. | Higher surge capability but incompatible with space-constrained automotive PCBs and AOI processes. | Choose for high-energy transient suppression where board area and optical inspection are secondary concerns. |
Compared with NSS20201MR6T1G and ES1J, the BAS21QC-Q uniquely combines AEC-Q101 compliance, ultra-low 0.48 mm profile, side-wettable flanks, and 5 pF capacitance - making it the only option qualified for volume production in compact, safety-critical automotive modules requiring AOI traceability.
Availability
BAS21QC-Q is available at Aetrix Electronics and suitable for automotive body control modules, industrial 48 V DC-DC converters, and smart sensor node voltage clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BAS21QC-Q 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with core R&D and manufacturing in Europe and Asia.
The BAS21QC-Q belongs to Nexperia's AEC-Q101-qualified high-voltage switching diode product line, engineered specifically for automotive power management, ESD protection, and precision clamping in space- and reliability-constrained environments.
FAQ
Is BAS21QC-Q suitable for 48 V automotive battery systems?
Yes. With a 250 V repetitive peak reverse voltage (VRRM) and AEC-Q101 qualification, the BAS21QC-Q supports 48 V systems including load dump transients up to ISO 7637-2 Pulse 5a (110 V). Its 150 °C max junction temperature ensures operation in under-hood environments where ambient exceeds 105 °C.
What is the recommended PCB footprint for DFN1412D-3 package?
Nexperia specifies a 1.3 mm × 0.75 mm cathode pad with 0.45 mm solder mask opening and 0.65 mm solder paste stencil aperture. The anode pad is 0.8 mm × 0.75 mm. Full footprint details, including solder resist and land patterns, are provided in Figure 10 of the official datasheet (Issue date: 20-03-23).
Does BAS21QC-Q have internal ESD protection?
No. The BAS21QC-Q is a passive switching diode and does not integrate ESD protection circuitry. However, its 200 V reverse voltage rating and low capacitance make it suitable as an external clamping element in I/O protection networks - typically paired with dedicated TVS diodes for full IEC 61000-4-2 compliance.
Can BAS21QC-Q replace BAS21 in existing designs?
No direct drop-in replacement. While both are high-voltage switching diodes, BAS21QC-Q uses a DFN1412D-3 package with side-wettable flanks and AEC-Q101 qualification, whereas BAS21 uses SOT23. Pinout differs (BAS21: 1=A, 2=K, 3=n.c.; BAS21QC-Q: 1=A, 2=n.c., 3=K), and thermal performance is not equivalent due to differing package thermal resistance and mounting requirements.
BAS21QC-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 200 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1412D-3
- Operating Temperature - Junction:
- 150°C
BAS21QC-QZ FAQ
1.How can I place an order for BAS21QC-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21QC-QZ 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 BAS21QC-QZ reliable?
The price and inventory of BAS21QC-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21QC-QZ is usually 5 days.
3.What payment methods are accepted for BAS21QC-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21QC-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21QC-QZ?
BAS21QC-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21QC-QZ 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 BAS21QC-QZ?
For technical support, including BAS21QC-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21QC-QZ requirements.
6.How does Aetrix verify that BAS21QC-QZ is sourced from the original manufacturer or authorized distributors?
All BAS21QC-QZ 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 BAS21QC-QZ meets industry standards.
7.What is the process for return or replacement of BAS21QC-QZ?
All BAS21QC-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BAS21QC-QZ, 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 BAS21QC-QZ part is unused and in its original packaging.
Return procedure for BAS21QC-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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