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Nexperia USA Inc. BAS19,235
- Part No.:
- BAS19,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS19,235.pdf
- Description:
- DIODE GP 100V 200MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,103
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Product details
Overview
BAS19,235 from Nexperia is a high-voltage switching diode in SOT23 (TO-236AB) package, rated for 100 V reverse voltage, 200 mA continuous forward current, and 50 ns reverse recovery time. It serves as a fast-switching, low-leakage clamping or polarity protection device in automotive power rails and industrial DC-DC converter feedback paths.
For engineers reviewing the BAS19,235 datasheet, BAS19,235 pinout, BAS19,235 application, or BAS19,235 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, and real-world use context for high-voltage transient suppression and reverse-battery protection circuits.
Technical Context
The BAS19,235 is a silicon planar epitaxial high-speed switching diode optimized for rapid turn-off under high-voltage bias. Its 5 pF capacitance at 0 V and 50 ns trr enable clean signal edge handling in flyback snubbers and clamp networks.
Designed with low leakage (≤100 nA at 100 V, 25 °C) and junction temperature capability up to 150 °C, it supports stable operation in under-hood automotive environments and thermally constrained industrial PCBs without derating below 100 V VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 100 V - Maximum continuous blocking voltage before breakdown; enables use in 48 V and 60 V automotive systems. |
| trr (Reverse Recovery Time) | 50 ns - Fast charge removal enables >1 MHz switching in clamp and snubber circuits without excessive ringing. |
| IF (Forward Current) | 200 mA - Continuous conduction rating sufficient for bias, sensing, and low-power protection paths. |
| IR (Reverse Leakage) | 100 nA @ 100 V, 25 °C - Low leakage preserves signal integrity in high-impedance voltage monitor nodes. |
| Cd (Diode Capacitance) | 5 pF @ 0 V, 1 MHz - Minimal parasitic capacitance avoids loading of high-frequency control signals. |
| Rth(j-a) | 500 K/W - Thermal resistance on FR4 PCB defines safe operating area under ambient temperatures ≤125 °C. |
| VF (Forward Voltage) | 1.25 V @ 200 mA, 25 °C - Predictable forward drop simplifies loss budgeting in clamping and OR-ing designs. |
Pinout & Package
Package: TO-236AB (SOT23), 3-lead surface-mount plastic package with standard footprint per Figure 9 (reflow) and Figure 10 (wave) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to higher-potential node in clamping or polarity protection configuration. |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no routing or soldering required. |
| 3 | Cathode (K) | Forward current exit and reverse-blocking terminal; ties to ground or return path in protection topologies. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
| High-speed switching | 50 ns trr ensures minimal dead-time distortion in synchronous rectifier gate drive clamp networks. |
| Low capacitance | 5 pF Cd avoids signal attenuation in high-frequency feedback loops of isolated DC-DC converters. |
| Small SMD package | SOT23 footprint saves board space in compact modules such as battery management IC support circuitry. |
Applications
| Automotive Reverse Polarity Protection | DC-DC Converter Output Clamp |
|---|---|
Use Scenario: Prevents damage when vehicle battery is connected backward during service or jump-start. IC Role / Device Role / Timing Role: Standalone series diode in main power input path; conducts only during correct polarity. Use Value: Withstands 100 V reverse bias and operates reliably at 150 °C junction temperature under hood conditions. |
Use Scenario: Clamps voltage spikes across transformer secondary windings in flyback converters. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing energy during MOSFET turn-off transitions. Use Value: 50 ns trr and 5 pF capacitance minimize overshoot and ringing, improving EMI compliance. |
| Voltage Monitor Input Protection | Industrial Sensor Signal Conditioning |
Use Scenario: Shields precision ADC inputs from overvoltage transients induced by nearby relay switching. IC Role / Device Role / Timing Role: Low-leakage shunt diode limiting input voltage to rail-safe levels. Use Value: 100 nA IR at 100 V prevents measurement drift in high-impedance sensor front-ends. |
Use Scenario: Protects analog output pins of industrial temperature or pressure transmitters from field wiring faults. IC Role / Device Role / Timing Role: Bidirectional clamping element in TVS-assisted protection network. Use Value: SOT23 footprint integrates cleanly into 4–20 mA loop transmitter PCBs with minimal layout impact. |
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 MMBD1203 | 100 V VR, 250 mA IF, 50 ns trr, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial-only designs with lower reliability requirements | Select when AEC-Q101 is not mandated and higher IF margin is needed |
| Diodes Incorporated BAV19W | 100 V VR, 200 mA IF, 50 ns trr, same SOT23 package, AEC-Q101 qualified | Identical electrical specs and qualification; differs only in marking and traceability chain | Drop-in alternative with identical performance and automotive compliance |
Compared with MMBD1203 and BAV19W, BAS19,235 offers guaranteed AEC-Q101 qualification and consistent 100 nA leakage at 100 V, making it preferred for safety-critical automotive subsystems where long-term parametric stability is required.
Availability
BAS19,235 is available at Aetrix Electronics and suitable for automotive reverse polarity protection, DC-DC converter clamping, and industrial sensor interface circuits requiring stable component supply across multi-year production cycles.
Supply support for BAS19,235 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 specializing in high-performance, reliable discrete and logic devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
BAS19,235 belongs to Nexperia's high-voltage switching diode product line, engineered specifically for robust transient suppression and polarity protection in automotive power distribution and industrial power conversion.
FAQ
Is BAS19,235 suitable for 48 V automotive battery systems?
Yes. With a 100 V reverse voltage rating and AEC-Q101 qualification, BAS19,235 supports 48 V nominal systems-including load dump transients up to 87 V per ISO 7637-2-and operates reliably from −40 °C to +150 °C junction temperature.
What is the significance of Pin 2 being 'not connected'?
Pin 2 is internally unconnected and must remain electrically floating. Routing or soldering to this pin introduces risk of mechanical stress or unintended coupling; the SOT23 footprint accommodates this via a non-plated pad or omitted copper land per Nexperia's recommended layout (Figure 9).
How does BAS19,235 compare to standard rectifiers like 1N4148 in high-speed applications?
BAS19,235 offers 50 ns trr versus ~4 ns for 1N4148, but its 100 V VR rating is triple that of 1N4148 (75 V). It trades ultra-fast recovery for higher voltage tolerance-making it optimal for 48–60 V clamp roles where 1N4148 would risk avalanche failure.
Can BAS19,235 be used in parallel for higher current handling?
No. Due to mismatch in forward voltage (VF) and thermal resistance, paralleling BAS19,235 units causes current imbalance and potential thermal runaway. For >200 mA applications, select a single higher-rated diode such as PMEG100V050EPK (5 A, 100 V) in SOD123W.
BAS19,235 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):
- 100 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 @ 100 V
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C (Max)
BAS19,235 FAQ
1.How can I place an order for BAS19,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS19,235 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 BAS19,235 reliable?
The price and inventory of BAS19,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS19,235 is usually 5 days.
3.What payment methods are accepted for BAS19,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS19,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS19,235?
BAS19,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS19,235 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 BAS19,235?
For technical support, including BAS19,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS19,235 requirements.
6.How does Aetrix verify that BAS19,235 is sourced from the original manufacturer or authorized distributors?
All BAS19,235 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 BAS19,235 meets industry standards.
7.What is the process for return or replacement of BAS19,235?
All BAS19,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAS19,235, 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 BAS19,235 part is unused and in its original packaging.
Return procedure for BAS19,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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