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Nexperia USA Inc. BAS21LD-QYL
- Part No.:
- BAS21LD-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 2-XDFN
- Datasheet:
-
BAS21LD-QYL.pdf
- Description:
- BAS21LD-Q/SOD882D/DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,199
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Product details
Overview
BAS21LD-QYL from Nexperia is a high-voltage switching diode in a DFN1006D-2 (SOD882D) leadless SMD package, rated for 200 V reverse voltage, 330 mA forward current, and 50 ns reverse recovery time. It serves as a fast, low-leakage clamping and polarity protection device in automotive power management and industrial DC-DC converter circuits.
For engineers reviewing the BAS21LD-QYL datasheet, BAS21LD-QYL pinout, BAS21LD-QYL application, or BAS21LD-QYL equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low 2 pF capacitance at 0 V, 100 nA reverse leakage at 200 V, and 0.37 mm profile for space-constrained PCB layouts.
Technical Context
The BAS21LD-QYL employs a planar epitaxial silicon structure optimized for high-speed switching with controlled minority-carrier lifetime, enabling trr ≤ 50 ns under IF = 30 mA / IR = 30 mA test conditions. Its junction design achieves low forward voltage (1.25 V @ 200 mA) while maintaining high VR = 200 V and VRRM = 250 V ratings.
Thermally, it features Rth(j-a) = 375 K/W on FR4 (standard footprint) and Rth(j-sp) = 40 K/W to cathode solder point, supporting reliable operation up to Tj = 150 °C. The DFN1006D-2 package uses solderable side pads for enhanced thermal transfer and mechanical stability during reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 200 V - supports input stage clamping in 12 V/24 V automotive systems with margin against load dump transients |
| Forward Current (IF) | 330 mA - sufficient for signal-level switching and biasing in sensor interfaces and logic-level translators |
| Reverse Recovery Time (trr) | 50 ns - enables stable operation in PWM frequencies up to ~2 MHz without excessive switching loss |
| Reverse Leakage (IR) | 100 nA @ 200 V - ensures minimal standby current in battery-backed circuits and precision voltage references |
| Diode Capacitance (Cd) | 2 pF @ 0 V, 1 MHz - preserves signal integrity in RF-coupled detection and high-frequency timing paths |
| Package Dimensions | 1.0 × 0.6 × 0.4 mm - fits 0201-class footprints with side-wettable flanks for automated optical inspection |
| Junction Temperature (Tj) | 150 °C - validated for under-hood automotive environments per AEC-Q101 stress testing |
Pinout & Package
DFN1006D-2 (SOD882D) is a 2-terminal, leadless ultra-small plastic package with visible and solderable side pads, 0.65 mm pitch, and typical height of 0.37 mm. Cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Primary current exit path; connected to thermal pad on PCB for heat dissipation and low-inductance return |
| 2 | Anode (A) | Current entry point; routed to switching node or supply rail requiring transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM ≥ 8 kV) |
| Ultra-low capacitance | 2 pF enables use in >100 MHz signal routing without loading effects or phase shift |
| Solderable side pads | Enables automated AOI verification and improves thermal conduction vs. standard bottom-only terminations |
| Low-profile package | 0.37 mm height allows placement beneath connectors or in stacked module assemblies |
| High VRRM rating | 250 V repetitive peak reverse voltage provides safety margin for 24 V industrial bus applications |
Applications
| Automotive Load Dump Protection | Industrial DC-DC Converter Snubbing |
|---|---|
|
Use Scenario: Clamps induced transients up to ±120 V during alternator load dump events in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: High-voltage clamp diode placed across input filter capacitor to divert surge energy to ground. Use Value: Withstands 250 V VRRM and dissipates transient energy via low trr and robust IFSM (9 A @ 1 µs), preventing downstream regulator failure. |
Use Scenario: Suppresses voltage spikes across MOSFET drains in flyback and buck-boost converters operating at 300–500 kHz. IC Role / Device Role / Timing Role: Fast-recovery snubber diode in RCD clamp network to limit peak drain voltage. Use Value: 50 ns trr and 2 pF Cd minimize energy loss and ringing, improving efficiency and EMI performance over standard rectifiers. |
| Reverse Polarity Input Protection | High-Speed Signal Level Translation |
|
Use Scenario: Protects 24 V industrial PLC I/O modules from accidental reverse connection during field wiring. IC Role / Device Role / Timing Role: Series-connected anode-to-input diode blocking reverse current flow while passing normal forward current. Use Value: 100 nA IR at 200 V ensures <1 µW standby power loss; 330 mA IF handles full module input current without derating. |
Use Scenario: Isolates logic-level signals between mixed-voltage domains (e.g., 3.3 V MCU to 5 V sensor interface). IC Role / Device Role / Timing Role: Bidirectional clamping diode pair limiting signal swing to safe voltage rails. Use Value: Low 1.25 V VF at 200 mA and 2 pF capacitance preserve rise/fall times below 2 ns, supporting >100 Mbps digital signaling. |
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 NSVBAV21HT1G | Same DFN1006D-2 package, 200 V VR, but trr = 75 ns and IR = 500 nA @ 200 V | Higher leakage limits use in ultra-low-power battery monitoring; slower recovery reduces suitability for >1 MHz switching | Select when cost sensitivity outweighs speed/leakage requirements and AEC-Q101 is not mandatory |
| Vishay VS-2EDL02STR-M3 | DO-219AD package (larger), 200 V VR, trr = 50 ns, but IR = 200 nA @ 200 V and no AEC-Q101 certification | Not qualified for automotive; 0.9 mm height increases board stack-up; requires different footprint and stencil | Choose only for non-automotive industrial use where thermal mass > package size is prioritized |
Compared with NSVBAV21HT1G and VS-2EDL02STR-M3, the BAS21LD-QYL uniquely combines AEC-Q101 qualification, 100 nA leakage, and 50 ns trr in a 0.37 mm-height DFN1006D-2 package-making it the only option meeting stringent automotive signal integrity and space constraints simultaneously.
Availability
BAS21LD-QYL is available at Aetrix Electronics and suitable for automotive infotainment power sequencing, industrial motor drive gate driver protection, and medical portable device reverse polarity safeguards requiring stable component supply across multi-year production cycles.
Supply support for BAS21LD-QYL 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 essential semiconductors, with leadership in logic, discrete, and MOSFET technologies.
The BAS21LD-QYL belongs to Nexperia's AEC-Q101-qualified high-voltage switching diode product line, engineered specifically for automotive power management and industrial transient suppression where speed, leakage, and miniaturization are critical.
FAQ
Is BAS21LD-QYL pin-compatible with BAS21,115?
No. BAS21LD-QYL uses a DFN1006D-2 (SOD882D) 2-pin leadless package with side-wettable flanks, whereas BAS21,115 is in an SOT23-3 package with three pins and different pinout. Physical and thermal mounting requirements differ significantly-no direct PCB footprint compatibility exists.
What is the maximum allowable soldering temperature profile for BAS21LD-QYL?
The BAS21LD-QYL is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak temperature of 260 °C for ≤ 30 seconds. Preheat ramp rate must not exceed 3 °C/s, and time above 217 °C shall be 60–150 seconds. Thermal pad soldering must follow Nexperia's SOD882D footprint guidelines (Fig. 11).
Does BAS21LD-QYL support bidirectional ESD protection?
No. The BAS21LD-QYL is a unidirectional switching diode with defined anode/cathode polarity. It is not designed or characterized for IEC 61000-4-2 ESD clamping. For bidirectional ESD protection, dedicated TVS diodes such as PESD5V0S1BA should be used instead.
Can BAS21LD-QYL replace BAT54 series diodes in high-frequency applications?
Only conditionally. While both offer low capacitance, the BAT54 series has lower VF (~0.33 V) but higher trr (5 ns for BAT54SW vs. 50 ns for BAS21LD-QYL) and lower VR (30 V). BAS21LD-QYL is unsuitable for 3.3 V logic clamping but appropriate where 200 V standoff and automotive qualification are required.
BAS21LD-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 330mA
- 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:
- 2pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1006D-2
- Operating Temperature - Junction:
- 150°C
BAS21LD-QYL FAQ
1.How can I place an order for BAS21LD-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21LD-QYL 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 BAS21LD-QYL reliable?
The price and inventory of BAS21LD-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21LD-QYL is usually 5 days.
3.What payment methods are accepted for BAS21LD-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21LD-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21LD-QYL?
BAS21LD-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21LD-QYL 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 BAS21LD-QYL?
For technical support, including BAS21LD-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21LD-QYL requirements.
6.How does Aetrix verify that BAS21LD-QYL is sourced from the original manufacturer or authorized distributors?
All BAS21LD-QYL 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 BAS21LD-QYL meets industry standards.
7.What is the process for return or replacement of BAS21LD-QYL?
All BAS21LD-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BAS21LD-QYL, 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 BAS21LD-QYL part is unused and in its original packaging.
Return procedure for BAS21LD-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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