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Nexperia USA Inc. BAS21GWJ
- Part No.:
- BAS21GWJ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
BAS21GWJ.pdf
- Description:
- DIODE GEN PURP 200V 225MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,710
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Product details
Overview
BAS21GW from Nexperia is a high-voltage switching diode in SOD123 package, rated for 200 V reverse voltage, 225 mA forward current, and 50 ns reverse recovery time. It serves as a fast, low-leakage rectifier in automotive and industrial power supply rails, DC-DC converter flyback paths, and ESD-protected signal line clamping.
For engineers reviewing the BAS21GW datasheet, BAS21GW pinout, BAS21GW application, or BAS21GW equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance values, and real-world switching performance metrics under pulsed and steady-state conditions.
Technical Context
The BAS21GW is a silicon planar epitaxial switching diode optimized for high-speed turn-off with controlled minority-carrier lifetime. Its trr ≤ 50 ns is measured under standardized IF = 10 mA / IR = 10 mA / RL = 100 Ω conditions at Tj = 25 °C.
It operates across –55 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 330 K/W on standard FR4 PCB and 44 K/W to solder point - enabling reliable use in thermally constrained automotive modules and industrial control boards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 200 V - supports input rectification in 120/230 VAC-derived 170/325 VDC bus applications |
| Forward Current (IF) | 225 mA continuous - sufficient for auxiliary bias supplies and low-power logic-level switching |
| Reverse Recovery Time (trr) | ≤ 50 ns - enables operation up to ~10 MHz switching frequency in flyback snubbers and charge-pump circuits |
| Reverse Leakage (IR) | ≤ 100 nA at VR = 200 V - ensures minimal standby power loss in always-on monitoring circuits |
| Diode Capacitance (Cd) | ≤ 2 pF at VR = 0 V, f = 1 MHz - preserves signal integrity in RF-coupled detection and high-frequency sampling paths |
| Junction Temperature (Tj) | 150 °C max - allows deployment in engine control units and under-hood electronics without derating |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Encapsulated in SOD123 surface-mount plastic package (3.75 × 2.55 × 1.3 mm), with cathode marked by band and anode unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to higher-potential node during reverse bias; carries full forward current return path |
| 2 | Anode (A) | Connected to lower-potential node during conduction; defines polarity for unidirectional current flow |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | trr ≤ 50 ns enables efficient operation in >5 MHz DC-DC converters without excessive switching loss |
| Low leakage current | IR ≤ 100 nA at 200 V ensures <1 µW standby dissipation in battery-backed sensor nodes |
| High reverse voltage rating | VR = 200 V supports direct interface with 170 VDC mains-derived rails without external voltage dividers |
| Small SMD footprint | SOD123 package occupies only 9.6 mm² PCB area - ideal for space-constrained automotive ECUs |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and human-body-model ESD (≥2 kV) |
Applications
| Automotive Engine Control Unit (ECU) | Industrial AC-DC Auxiliary Supply |
|---|---|
Use Scenario: Clamping transient spikes on 12 V battery rail during load-dump events. IC Role / Device Role / Timing Role: Fast-recovery diode in TVS-assisted overvoltage protection network. Use Value: 50 ns trr limits energy dissipation during 10–100 ns transients, reducing thermal stress on downstream regulators. |
Use Scenario: Output rectification in isolated flyback converter powering microcontroller peripherals. IC Role / Device Role / Timing Role: Secondary-side switching diode handling 200 mA at 100 kHz switching frequency. Use Value: 2 pF capacitance minimizes ringing and EMI generation at switch-node transitions. |
| Smart Meter Power Management | Medical Sensor Signal Conditioning |
Use Scenario: Reverse-polarity protection for lithium-thionyl chloride primary cell backup supply. IC Role / Device Role / Timing Role: Series blocking diode preventing battery discharge into main power domain. Use Value: 100 nA IR ensures <1 µAh/year leakage - extending 10-year meter battery life by >0.5%. |
Use Scenario: ESD protection clamp on analog front-end inputs exposed to human contact. IC Role / Device Role / Timing Role: Low-capacitance shunt diode limiting transient voltage to ADC input pins. Use Value: 2 pF Cd avoids signal attenuation above 100 MHz, preserving pulse fidelity in biopotential sensing. |
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 MMBD2102AL | Same SOD123 package; VR = 200 V, trr = 50 ns, but IR = 500 nA (5× higher) | Higher leakage reduces suitability in ultra-low-power battery systems | Select when cost sensitivity outweighs leakage requirements and AEC-Q101 is not mandatory |
| Vishay 1N4148WS | SOD-323 package; VR = 100 V (half), trr = 4 ns (faster), but not AEC-Q101 qualified | Insufficient reverse voltage for 170 VDC bus applications; limited to low-voltage logic-level switching | Prefer for high-frequency digital signal routing where VR < 100 V and automotive qualification is unnecessary |
Compared with MMBD2102AL and 1N4148WS, the BAS21GW uniquely balances 200 V rating, 50 ns speed, sub-100 nA leakage, and AEC-Q101 compliance - making it the only choice for automotive-grade, high-voltage, low-leakage switching in thermally constrained SMD layouts.
Availability
BAS21GW is available at Aetrix Electronics and suitable for automotive engine control units, industrial AC-DC auxiliary supplies, and smart meter power management requiring stable component supply and long-term lifecycle assurance.
Supply support for BAS21GW 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 roots in Philips Semiconductors and headquartered in Nijmegen, Netherlands.
The BAS21GW belongs to Nexperia's AEC-Q101-qualified high-voltage switching diode product line, engineered specifically for automotive power management, industrial power conversion, and robust signal-line protection.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for BAS21GW?
The BAS21GW has a repetitive peak reverse voltage (VRRM) of 250 V per IEC 60134 absolute maximum ratings. This exceeds its rated reverse voltage (VR) of 200 V and provides margin for transient overvoltage events in automotive and industrial environments without device failure.
Is BAS21GW suitable for reflow soldering, and what profile is recommended?
Yes, BAS21GW is qualified for lead-free reflow soldering per J-STD-020. The recommended peak temperature is 260 °C for ≤ 30 seconds, with ramp-up rate ≤ 3 °C/s. Its SOD123 package uses standard IPC-7351B footprint dimensions (2.36 mm × 1.11 mm pad size) for reliable thermal and mechanical attachment.
How does BAS21GW perform at elevated junction temperatures?
At Tj = 150 °C, BAS21GW maintains IR ≤ 100 µA (vs. 100 nA at 25 °C), and VF increases to ~1.1 V at IF = 200 mA. Its 150 °C max junction temperature and 44 K/W junction-to-solder-point thermal resistance enable sustained operation in under-hood automotive modules without active cooling.
Can BAS21GW replace 1N4148 in high-voltage applications?
No - the 1N4148 has VR = 100 V and VRRM = 100 V, making it unsuitable for 200 V applications. BAS21GW provides double the reverse voltage rating while maintaining comparable trr (50 ns vs. 4 ns), and adds AEC-Q101 qualification and lower leakage - critical for automotive and industrial reliability.
BAS21GWJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 225mA
- 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
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- 150°C (Max)
BAS21GWJ FAQ
1.How can I place an order for BAS21GWJ through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS21GWJ 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 BAS21GWJ reliable?
The price and inventory of BAS21GWJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS21GWJ is usually 5 days.
3.What payment methods are accepted for BAS21GWJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS21GWJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS21GWJ?
BAS21GWJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS21GWJ 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 BAS21GWJ?
For technical support, including BAS21GWJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS21GWJ requirements.
6.How does Aetrix verify that BAS21GWJ is sourced from the original manufacturer or authorized distributors?
All BAS21GWJ 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 BAS21GWJ meets industry standards.
7.What is the process for return or replacement of BAS21GWJ?
All BAS21GWJ units undergo pre-shipment inspection (PSI). If there is an issue with BAS21GWJ, 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 BAS21GWJ part is unused and in its original packaging.
Return procedure for BAS21GWJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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