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Nexperia USA Inc. BAS101-QR
- Part No.:
- BAS101-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS101-QR.pdf
- Description:
- BAS101-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,863
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Product details
Overview
BAS101-QR from Nexperia is a high-voltage switching diode in SOT23 package, rated for 300 V repetitive peak reverse voltage (VRRM), 200 mA forward current (IF), and 50 ns reverse recovery time (trr); designed for automotive-grade voltage clamping and reverse polarity protection in power supply rails and ECU input stages.
For engineers reviewing the BAS101-QR datasheet, BAS101-QR pinout, BAS101-QR application, or BAS101-QR equivalent, key selection criteria include verified AEC-Q101 qualification, low 2 pF junction capacitance at 0 V, 150 nA reverse leakage at 250 V/25 °C, and confirmed 3-pin SOT23 terminal mapping with Pin 2 unconnected.
Technical Context
This discrete high-voltage switching diode operates as a unidirectional charge-transfer element with fast turn-off behavior enabled by low minority-carrier lifetime design. Its 50 ns trr is measured under standardized IF/IR = 30 mA switching with 100 Ω load and 3 mA sensing threshold, ensuring predictable timing in flyback snubbers and clamp circuits.
The device features a single-junction silicon structure with metallurgical anode-cathode separation optimized for stable 300 V blocking capability across −65 °C to +150 °C ambient range. Thermal resistance Rth(j-a) is 500 K/W on FR4 PCB, defining maximum continuous dissipation at 250 mW under derated conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Maximum repetitive reverse voltage the diode sustains without breakdown during normal operation. |
| IF | 200 mA - Continuous forward current rating defining safe DC conduction capacity. |
| trr | 50 ns - Reverse recovery time confirming suitability for >1 MHz switching in SMPS clamp networks. |
| Cd | 2 pF at 0 V, 1 MHz - Low junction capacitance minimizing signal coupling and AC loss in high-frequency paths. |
| IR | 150 nA at VR = 250 V, 25 °C - Ultra-low leakage enabling reliable hold-off in battery backup and sensing circuits. |
| Rth(j-a) | 500 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB, guiding heatsinking requirements. |
Pinout & Package
Encapsulated in a standard SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), the BAS101-QR uses a 3-terminal configuration with Pin 2 internally unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A1) | Forward current entry point; connects to positive side of switched voltage rail. |
| 2 | Not connected (n.c.) | No internal bond wire or die connection; must remain floating in PCB layout. |
| 3 | Cathode (K) | Forward current exit and reverse voltage reference node; ties to ground or return path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test standard. |
| Low trr (≤50 ns) | Enables efficient high-frequency switching in flyback snubbers and active clamp circuits without excessive switching loss. |
| Low Cd (≤2 pF) | Minimizes capacitive loading on high-speed signal lines and improves noise immunity in ESD-protected interfaces. |
| High VRRM (300 V) | Supports direct use in 24 V and 48 V industrial and automotive systems with transient overvoltage margin. |
Applications
| Automotive Power Rail Protection | DC-DC Converter Snubber |
|---|---|
Use Scenario: Reverse battery connection protection in 12 V/24 V vehicle ECUs and infotainment head units. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with main power input to prevent damage during polarity reversal. Use Value: Withstands 300 V reverse transients and exhibits only 150 nA leakage at 250 V, ensuring minimal standby current drain. |
Use Scenario: Clamp diode in synchronous buck converter output stage to absorb inductive kickback during MOSFET turn-off. IC Role / Device Role / Timing Role: Fast-recovery path for stored energy, reducing voltage overshoot and EMI generation. Use Value: 50 ns trr and 2 pF capacitance limit ringing frequency and suppress peak voltage spikes above 30 V rail. |
| Voltage Clamping in Industrial Sensors | ESD Input Protection for CAN Transceivers |
Use Scenario: Overvoltage clamp on analog sensor inputs exposed to 24 V field wiring in PLC I/O modules. IC Role / Device Role / Timing Role: Shunt limiter that conducts above 300 V to protect downstream op-amps and ADC front-ends. Use Value: Stable 300 V VRRM ensures repeatable clamping threshold without degradation after multiple surge events. |
Use Scenario: Secondary-level ESD protection diode on CAN_H/CAN_L lines upstream of ISO 11898-compliant transceivers. IC Role / Device Role / Timing Role: High-speed shunt path for ±8 kV HBM transients while preserving signal integrity at 1 Mbps. Use Value: 2 pF capacitance avoids CAN bus timing skew; 50 ns trr prevents latch-up during fast ESD pulses. |
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 MMBD101Q | VRRM = 300 V, trr = 50 ns, but IR = 200 nA at 250 V - 33 % higher leakage than BAS101-QR. | Suitable for non-automotive industrial clamping where leakage sensitivity is relaxed. | Select when cost priority outweighs AEC-Q101 compliance and ultra-low leakage requirement. |
| Vishay VS-2EDH03-M3/84A | VRRM = 300 V, IF = 200 mA, but SOD-323 package - 0.6 mm narrower body limits PCB routing flexibility. | Preferred in space-constrained consumer IoT designs where footprint area is critical. | Choose only if board real estate is constrained and thermal performance on FR4 is verified for 250 mW. |
Compared with MMBD101Q and VS-2EDH03-M3/84A, the BAS101-QR uniquely combines AEC-Q101 qualification, 150 nA leakage at 250 V, and SOT23 mechanical compatibility-making it the preferred choice for automotive power rail protection where reliability and low standby loss are mandatory.
Availability
BAS101-QR is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC-DC snubbing, and CAN bus ESD hardening requiring stable component supply and full traceability.
Supply support for BAS101-QR 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 solutions, headquartered in Nijmegen, Netherlands.
The BAS101-QR belongs to Nexperia's AEC-Q101-qualified high-voltage diode family, engineered specifically for robustness in automotive power management and industrial interface protection.
FAQ
Is BAS101-QR pin-compatible with BAS16 or BAV99?
No. BAS101-QR has Pin 2 unconnected, whereas BAS16 (SOT23) uses Pin 2 as cathode and BAV99 (SOT363) is a dual diode with different pin mapping. Substitution requires PCB layout revision and verification of trr, VRRM, and leakage alignment.
What is the maximum allowable junction temperature during pulsed operation?
The absolute maximum junction temperature is 150 °C. Under pulsed forward current (IFSM = 9 A, tp ≤ 1 µs), junction temperature rise is limited by thermal mass and duty cycle; sustained operation above 150 °C causes irreversible parametric shift and failure.
Does BAS101-QR support wave soldering?
Yes. Nexperia provides dedicated wave soldering footprint (Fig. 8) with 1.4 mm × 2.2 mm solder lands and defined transport direction. Peak temperature must not exceed 260 °C for ≤5 seconds, and preheat ramp rate must stay within 3 °C/s per JEDEC J-STD-020.
How does the 2 pF capacitance affect CAN FD signal integrity?
At 5 Mbps CAN FD data rates, 2 pF adds <1.5 ps of propagation delay skew between differential lines and introduces <0.3 % signal attenuation - well within ISO 11898-2 margin. Layout symmetry and minimized trace length further mitigate impact.
BAS101-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 150 nA @ 250 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C
BAS101-QR FAQ
1.How can I place an order for BAS101-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS101-QR 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 BAS101-QR reliable?
The price and inventory of BAS101-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS101-QR is usually 5 days.
3.What payment methods are accepted for BAS101-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS101-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS101-QR?
BAS101-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS101-QR 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 BAS101-QR?
For technical support, including BAS101-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS101-QR requirements.
6.How does Aetrix verify that BAS101-QR is sourced from the original manufacturer or authorized distributors?
All BAS101-QR 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 BAS101-QR meets industry standards.
7.What is the process for return or replacement of BAS101-QR?
All BAS101-QR units undergo pre-shipment inspection (PSI). If there is an issue with BAS101-QR, 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 BAS101-QR part is unused and in its original packaging.
Return procedure for BAS101-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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