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Vishay BAS20-HE3_A-08
- Part No.:
- BAS20-HE3_A-08
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS20-HE3_A-08.pdf
- Description:
- SWITCHING DIODE GENPURP SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,157
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Product details
Overview
BAS20-HE3_A-08 from Vishay Semiconductors is a high-voltage silicon epitaxial planar switching diode in SOT-23 package, rated for 150 V continuous reverse voltage (VR), 200 V repetitive peak reverse voltage (VRRM), and 50 ns reverse recovery time (trr). It delivers 350 mA DC forward current with 1.25 V forward voltage at 200 mA, and supports automotive-grade reliability via AEC-Q101 qualification. It is used in flyback snubber networks, polarity protection, and high-speed signal routing in industrial power supplies.
For engineers reviewing the BAS20-HE3_A-08 datasheet, BAS20-HE3_A-08 pinout, BAS20-HE3_A-08 application, or BAS20-HE3_A-08 equivalent, key selection criteria include its 150 V VR rating, AEC-Q101 qualification status, SOT-23 footprint compatibility, 50 ns trr performance, and leakage current of ≤100 nA at 150 V reverse bias.
Technical Context
The BAS20-HE3_A-08 is a single-anode/cathode discrete switching diode optimized for high-voltage, fast-recovery operation in compact layouts. Its 5 pF junction capacitance at 0 V and 5 Ω dynamic forward resistance at 10 mA support low-capacitance signal switching and minimal conduction loss in high-frequency rectification.
Designed for automatic insertion and reflow soldering per J-STD-020 MSL 1, it features UL 94 V-0 molding compound and operates across –55 °C to +150 °C. Thermal resistance junction-to-ambient is 420 K/W on FR-4, enabling stable performance in thermally constrained PCB designs without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Continuous Reverse Voltage) | 150 V - supports input-stage clamping in 120 VAC-derived supplies without breakdown |
| VRRM (Repetitive Peak Reverse Voltage) | 200 V - withstands transient overvoltage spikes in offline SMPS primary-side circuits |
| trr (Reverse Recovery Time) | 50 ns - enables efficient operation up to ~2 MHz switching frequencies in flyback snubbers |
| IF (DC Forward Current) | 350 mA - sufficient for low-power logic-level signal routing and bias network isolation |
| IR (Leakage Current @ VR) | ≤100 nA @ 150 V - ensures minimal standby power loss in battery-backed or energy-sensitive systems |
| CD (Junction Capacitance) | 5 pF @ 0 V, 1 MHz - reduces capacitive loading in high-impedance signal path applications |
| RthJA (Junction-to-Ambient) | 420 K/W on FR-4 - allows 300 mW dissipation at ≤75 °C ambient without thermal derating |
Pinout & Package
SOT-23 plastic surface-mount package (9.2 mg weight, UL 94 V-0 flammability rating, MSL 1 moisture sensitivity level). Compatible with standard 8 mm tape carrier for 7″ reel (3K units) and automated pick-and-place equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Forward current entry point | Connected to lower-potential node in reverse-biased protection or cathode-driven switching |
| 2 (Cathode) | Forward current exit / reverse-blocking terminal | Connected to higher-potential rail in polarity protection; carries full reverse voltage when off |
| 3 (Collector / NC) | No connection | Internally unconnected; electrically isolated from die - must not be tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and infotainment applications requiring extended temperature and reliability compliance |
| Fast 50 ns trr | Minimizes switching losses and ringing in high-frequency DC-DC converters and snubber circuits |
| Low 5 pF capacitance | Preserves signal integrity in RF detector, sample-and-hold, and high-impedance analog switch applications |
| 150 V VR rating | Enables direct replacement of legacy 100 V diodes in upgraded power supply designs without layout change |
| SOT-23 footprint | Supports high-density PCB layouts and compatibility with existing pick-and-place tooling for cost-efficient manufacturing |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Input polarity reversal and transient suppression in 24 V industrial DC power inputs. IC Role / Device Role / Timing Role: Discrete high-voltage switching diode providing reverse polarity blocking and inductive kick clamping. Use Value: Prevents damage from accidental battery misconnection while sustaining 150 V reverse standoff during load dump events. | Use Scenario: Signal-level isolation and ESD protection in LIN bus interface circuitry. IC Role / Device Role / Timing Role: Fast-switching diode used in bidirectional TVS-assisted clamping networks. Use Value: Limits voltage excursions to < ±15 V with sub-50 ns response, preserving LIN transceiver integrity during EMC testing. |
| High-Frequency Flyback Snubber | Programmable Logic Controller I/O Protection |
Use Scenario: RC snubber network across MOSFET drain-source in 500 kHz flyback converters. IC Role / Device Role / Timing Role: High-speed switching diode conducting snubber current during MOSFET turn-off. Use Value: Reduces voltage overshoot by 35 % compared to slower 1N4148 due to 50 ns trr and low CD. | Use Scenario: Input channel protection against field-wiring faults and induced surges in PLC digital inputs. IC Role / Device Role / Timing Role: Low-leakage (≤100 nA) reverse-blocking diode in series with optocoupler anode. Use Value: Eliminates false triggering from microamp-level leakage currents while maintaining >150 V isolation margin. |
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 |
|---|---|---|---|
| BAS20-E3-08 | Same electrical specs, but commercial grade (non-AEC-Q101 qualified); identical SOT-23 pinout and marking A9G | Not suitable for automotive environments requiring AEC-Q101; acceptable for industrial control and consumer power supplies | Select BAS20-E3-08 only if AEC-Q101 qualification is not required and cost optimization is prioritized |
| MMBD1202-7-F | 150 V VR, 50 ns trr, but 100 nA IR @ 100 V (vs. 100 nA @ 150 V for BAS20-HE3_A-08); same SOT-23 package | Lower leakage at lower voltages; slightly reduced thermal robustness (RthJA = 450 K/W vs. 420 K/W) | Prefer BAS20-HE3_A-08 where full 150 V leakage spec and tighter thermal resistance are critical |
Compared with BAS20-E3-08 and MMBD1202-7-F, the BAS20-HE3_A-08 uniquely combines AEC-Q101 qualification, verified 100 nA leakage at full 150 V VR, and lowest RthJA among SOT-23 150 V switching diodes - making it optimal for thermally constrained automotive and industrial designs demanding long-term reliability.
Availability
BAS20-HE3_A-08 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, high-frequency flyback snubbers, and programmable logic controller I/O protection requiring stable component supply and AEC-Q101 compliance.
Supply support for BAS20-HE3_A-08 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
Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, headquartered in Malvern, PA, with design and manufacturing operations across the Americas, Europe, and Asia.
The BAS20-HE3_A-08 belongs to Vishay's high-voltage small-signal switching diode family, engineered specifically for automotive and industrial applications demanding fast recovery, high reverse voltage tolerance, and AEC-Q101 reliability validation.
FAQ
What is the AEC-Q101 qualification status of the BAS20-HE3_A-08?
The BAS20-HE3_A-08 is explicitly AEC-Q101 qualified, as confirmed in Vishay's official datasheet revision 1.2 (May 2024), Part Table, and ordering code definition. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating its suitability for automotive under-hood and chassis applications. The "HE3_A" suffix denotes AEC-Q101 compliance, distinguishing it from the commercial-grade BAS20-E3-08.
What is the maximum continuous reverse voltage rating for BAS20-HE3_A-08?
The BAS20-HE3_A-08 has a continuous reverse voltage (VR) rating of 150 V, as specified in the Absolute Maximum Ratings table of the Vishay datasheet (Document Number: 86370). This rating applies at Tamb = 25 °C and defines the maximum DC or RMS reverse voltage the device can sustain continuously without breakdown. Derating is required above 25 °C per the typical power dissipation curve in Figure 2.
Does BAS20-HE3_A-08 have a defined pinout for SOT-23, and what is the function of each terminal?
Yes, the BAS20-HE3_A-08 uses the standard SOT-23 pinout: Pin 1 is Anode, Pin 2 is Cathode, and Pin 3 is internally unconnected (NC). This configuration is confirmed in Vishay's package drawing (S8-V-3929.01-009) and functional diagrams. Pin 3 must remain floating - connecting it risks internal shorting or parametric shift. The anode-cathode orientation matches industry-standard SOT-23 diode marking (A9G).
What is the reverse recovery time (trr) of BAS20-HE3_A-08, and under what test conditions is it measured?
The reverse recovery time (trr) of the BAS20-HE3_A-08 is 50 ns, measured under the conditions IF = IR = 30 mA, RL = 100 Ω, and iR = 3 mA, per the Electrical Characteristics table in the Vishay datasheet. This value reflects the time required for the diode to transition from forward conduction to full reverse blocking, directly impacting switching loss and EMI in high-frequency power circuits.
Is BAS20-HE3_A-08 compatible with lead-free reflow soldering processes?
Yes, the BAS20-HE3_A-08 is fully compatible with lead-free reflow soldering. Its SOT-23 package is rated for peak temperatures up to 260 °C per J-STD-020, and it carries RoHS-compliant material categorization per Vishay document 99912. The device meets MSL 1 (Moisture Sensitivity Level 1), meaning it may be stored indefinitely at ≤30 °C/60 % RH without baking prior to assembly.
BAS20-HE3_A-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- 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):
- 150 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 200 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 150 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
- Operating Temperature - Junction:
- 150°C
BAS20-HE3_A-08 FAQ
1.How can I place an order for BAS20-HE3_A-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS20-HE3_A-08 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 BAS20-HE3_A-08 reliable?
The price and inventory of BAS20-HE3_A-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS20-HE3_A-08 is usually 5 days.
3.What payment methods are accepted for BAS20-HE3_A-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS20-HE3_A-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS20-HE3_A-08?
BAS20-HE3_A-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS20-HE3_A-08 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 BAS20-HE3_A-08?
For technical support, including BAS20-HE3_A-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS20-HE3_A-08 requirements.
6.How does Aetrix verify that BAS20-HE3_A-08 is sourced from the original manufacturer or authorized distributors?
All BAS20-HE3_A-08 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 BAS20-HE3_A-08 meets industry standards.
7.What is the process for return or replacement of BAS20-HE3_A-08?
All BAS20-HE3_A-08 units undergo pre-shipment inspection (PSI). If there is an issue with BAS20-HE3_A-08, 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 BAS20-HE3_A-08 part is unused and in its original packaging.
Return procedure for BAS20-HE3_A-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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