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Nexperia USA Inc. BAS21LSYL
- Part No.:
- BAS21LSYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-882
- Datasheet:
-
BAS21LSYL.pdf
- Description:
- DIODE GP 200V 250MA DFN1006BD-2
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
BAS21LSYL from Nexperia is a high-speed switching diode in a DFN1006BD-2 (SOD882BD) leadless SMD package, rated for 200 V reverse voltage, ≤50 ns reverse recovery time, and 250 mA forward current. It serves as a fast-switching element in power rail clamping, reverse polarity protection, and signal path isolation circuits on compact PCBs.
For engineers reviewing the BAS21LSYL datasheet, BAS21LSYL pinout, BAS21LSYL application, or BAS21LSYL equivalent, key selection criteria include trr ≤ 50 ns at IF = 30 mA, VR = 200 V, Cd ≤ 2 pF at 1 MHz, side-wettable flanks for AOI-compatible solder joint inspection, and thermal resistance Rth(j-a) = 375 K/W on standard FR4.
Technical Context
The BAS21LSYL uses a planar silicon epitaxial structure optimized for rapid carrier recombination, enabling trr ≤ 50 ns under standardized test conditions (IF = IR = 30 mA, RL = 100 Ω). Its low 2 pF capacitance at 0 V reverse bias supports high-frequency signal integrity in RF and digital interface protection paths.
Designed for surface-mount reliability, the device features side-wettable flanks on its 1.0 mm × 0.6 mm × 0.47 mm DFN1006BD-2 body, enabling automated optical inspection of solder fillets. Junction temperature is rated to 150 °C, with Ptot = 610 mW on a 1 cm² cathode copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 200 V maximum reverse voltage - sets clamping threshold in overvoltage protection circuits |
| trr | ≤50 ns reverse recovery time - enables reliable operation up to ~10 MHz switching frequencies |
| Cd | ≤2 pF diode capacitance at 0 V - minimizes signal loading in high-speed data lines |
| IF | 250 mA continuous forward current - supports moderate-power rail switching without derating |
| IR | 100 nA reverse leakage at VR = 200 V, Tj = 25 °C - ensures low standby power loss |
| Rth(j-a) | 375 K/W on standard FR4 - defines thermal rise under DC bias; requires layout-aware copper area |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless plastic package, 1.0 mm × 0.6 mm × 0.47 mm body, 0.65 mm pitch, side-wettable flanks for AOI.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to higher-potential node in reverse-biased clamping; marking side on top surface |
| 2 | Anode (A) | Connected to lower-potential node; current flows A→K during forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | trr ≤ 50 ns ensures minimal dead-time distortion in PWM-driven circuits |
| Low capacitance | Cd ≤ 2 pF preserves edge fidelity in >100 Mbps digital signal paths |
| Side-wettable flanks | Enables 100% AOI coverage of solder joints without X-ray inspection |
| Ultra-small footprint | DFN1006BD-2 saves >60% board area vs. SOT23-2 in space-constrained modules |
| Low leakage | IR ≤ 100 nA at 200 V supports battery-backed systems with multi-year shelf life |
Applications
| USB Port Protection | DC-DC Converter Snubber |
|---|---|
Use Scenario: Preventing reverse-current flow and ESD-induced latch-up in Type-A/C downstream ports. IC Role / Device Role / Timing Role: Reverse polarity protection diode placed between VBUS and system input rail. Use Value: 200 V VR rating withstands transient surges; 50 ns trr avoids interference with USB 2.0 packet timing. |
Use Scenario: Suppressing voltage spikes across MOSFET switches in buck converter output stages. IC Role / Device Role / Timing Role: Fast-recovery snubber diode in RCD clamp network. Use Value: Low trr and Cd minimize energy loss and ringing; 250 mA IF handles typical clamp currents. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Input Protection |
Use Scenario: Clamping analog sensor outputs (e.g., 0–5 V thermistor bridges) against EMI-induced overvoltage. IC Role / Device Role / Timing Role: Voltage clamp diode tied between signal line and reference rail. Use Value: 2 pF capacitance avoids signal attenuation above 100 kHz; 100 nA IR prevents DC offset drift. |
Use Scenario: Protecting microcontroller GPIOs from load-dump transients (ISO 7637-2 Pulse 5a) on 12 V vehicle inputs. IC Role / Device Role / Timing Role: Primary reverse-voltage blocking element in input protection stack. Use Value: 250 V VRRM margin accommodates 12 V system transients; side-wettable flanks ensure solder joint reliability in vibration-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSVBAV21HT1G | trr = 50 ns (same), but VF = 1.25 V @ 200 mA (vs. BAS21LSYL's 1.25 V typ); Cd = 2.5 pF | Slightly higher capacitance limits use in >50 Mbps interfaces; identical clamping performance | Select when legacy ON Semi BOM alignment required; verify Cd impact on signal integrity |
| Diodes Incorporated BAV21W-7-F | Same 200 V VR and 250 mA IF, but in SOD-123 package (2.7 mm × 1.6 mm); trr = 50 ns, Cd = 2.5 pF | Larger footprint reduces board density; no side-wettable flanks - AOI not supported | Choose only if DFN assembly capability is unavailable; expect 3× larger PCB area usage |
Compared with NSVBAV21HT1G and BAV21W-7-F, the BAS21LSYL delivers identical switching speed and voltage rating in a 60% smaller footprint with AOI-ready side-wettable flanks - critical for miniaturized, high-reliability consumer and industrial designs.
Availability
BAS21LSYL is available at Aetrix Electronics and suitable for USB port protection, DC-DC converter snubbing, and industrial sensor signal conditioning requiring stable component supply and consistent DFN1006BD-2 sourcing.
Supply support for BAS21LSYL 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 logic, discrete, and MOSFET components, headquartered in Nijmegen, Netherlands.
The BAS21LSYL belongs to Nexperia's high-speed switching diode product line, engineered for compact, high-frequency protection and clamping in space-constrained consumer, computing, and industrial electronics.
FAQ
What is the maximum junction temperature for BAS21LSYL?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in IEC 60134 limiting values. Operation above this temperature risks permanent degradation. Derating is required above Tamb = 25 °C per Rth(j-a) = 375 K/W on standard FR4; thermal design must include adequate copper area on the cathode pad.
Is BAS21LSYL suitable for automotive applications?
No - BAS21LSYL is not AEC-Q200 qualified and is explicitly designated as non-automotive in Nexperia's legal disclaimers. It lacks automotive-grade qualification testing, including temperature cycling, humidity bias, and vibration endurance. For automotive use, select an AEC-Q200 qualified alternative such as BAS21JX.
How does the side-wettable flank design improve manufacturing yield?
The side-wettable flanks on the DFN1006BD-2 package allow automated optical inspection (AOI) systems to directly image solder fillet geometry along the vertical sidewalls. This eliminates reliance on X-ray for void detection and enables real-time process feedback, improving first-pass yield in high-volume SMT lines.
What is the recommended PCB footprint for BAS21LSYL?
The official Nexperia footprint for DFN1006BD-2 specifies 0.6 mm × 0.4 mm solder lands (2×), 0.7 mm × 0.4 mm solder resist openings (2×), and 1.4 mm overall length. The cathode pad must be extended to ≥1 cm² copper area for full 610 mW power dissipation capability, per thermal characterization data.
BAS21LSYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006BD-2
- Operating Temperature - Junction:
- 150°C
BAS21LSYL FAQ
1.How can I place an order for BAS21LSYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21LSYL 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 BAS21LSYL reliable?
The price and inventory of BAS21LSYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21LSYL is usually 5 days.
3.What payment methods are accepted for BAS21LSYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21LSYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21LSYL?
BAS21LSYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21LSYL 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 BAS21LSYL?
For technical support, including BAS21LSYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21LSYL requirements.
6.How does Aetrix verify that BAS21LSYL is sourced from the original manufacturer or authorized distributors?
All BAS21LSYL 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 BAS21LSYL meets industry standards.
7.What is the process for return or replacement of BAS21LSYL?
All BAS21LSYL units undergo pre-shipment inspection (PSI). If there is an issue with BAS21LSYL, 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 BAS21LSYL part is unused and in its original packaging.
Return procedure for BAS21LSYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS21LSYL Tags
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BAV21W-7-F
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