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Nexperia USA Inc. BAV99S-QX
- Part No.:
- BAV99S-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BAV99S-QX.pdf
- Description:
- DIODE ARRAY GP 100V 200MA 6TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
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Product details
Overview
BAV99S-QX from Nexperia is a high-speed dual-series-pair (4-diode) switching diode array in SOT363-3 (TSSOP6) package, rated for 100 V reverse voltage, ≤4 ns reverse recovery time, and ≤1.5 pF capacitance per diode - deployed in automotive-grade polarity protection and signal routing circuits.
For engineers reviewing the BAV99S-QX datasheet, BAV99S-QX pinout, BAV99S-QX application, or BAV99S-QX equivalent, this page delivers verified AEC-Q101-qualified parameters, validated dual-series-pair configuration, thermal resistance (Rth(j-sp) = 260 K/W), and real-world switching performance at IF = 10 mA / VR = 80 V.
Technical Context
The BAV99S-QX integrates four silicon switching diodes in a single TSSOP6 package with two independent series-connected pairs: Diode 1–2 (A1–K2) and Diode 3–4 (A3–K4), sharing common terminals K1/A2 and K3/A4. This topology enables bidirectional clamping and dual-rail protection without external interconnects.
Its AEC-Q101 qualification confirms operation across −65 °C to +150 °C ambient, with junction temperature limited to 150 °C and total power dissipation capped at 250 mW under solder-point thermal constraints (pins 2/3/5/6).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 100 V - supports 24 V and 48 V automotive bus protection with 2× safety margin against transients. |
| Reverse Recovery Time (trr) | 4 ns - enables clean switching up to ~100 MHz in RF detector and high-frequency clamp applications. |
| Diode Capacitance (Cd) | 1.5 pF @ 0 V - minimizes signal loading in 50 Ω high-speed data lines (e.g., USB 2.0, CAN FD stubs). |
| Forward Voltage (VF) | 855 mV @ 10 mA - ensures low conduction loss in low-power reverse polarity guards with <100 mW dissipation per diode. |
| Reverse Leakage (IR) | 0.5 µA @ 80 V, 25 °C - maintains integrity in battery-backed circuits where standby current must stay below 1 µA. |
| Junction Temperature (Tj) | 150 °C - allows sustained operation in engine control units and under-hood modules without derating. |
Pinout & Package
Package: SOT363-3 (TSSOP6), 1.3 mm × 2.2 mm × 0.95 mm body, 0.65 mm lead pitch, thermally optimized for reflow soldering on pins 2, 3, 5, and 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first series diode pair; connects to protected supply rail in polarity guard. |
| 2 | Cathode (Diode 2) | Output node of first pair; shared as anode for Diode 2 → forms series path with Pin 1. |
| 3 | Cathode (Diode 3) / Anode (Diode 4) | Common terminal linking second series pair; enables dual-path bidirectional clamping. |
| 4 | Anode (Diode 3) | Input node for second series diode pair; used for complementary rail protection. |
| 5 | Cathode (Diode 4) | Output node of second pair; completes second series path, mirrored to Pin 2 functionality. |
| 6 | Cathode (Diode 1) / Anode (Diode 2) | Shared terminal tying Diode 1 cathode to Diode 2 anode - defines internal series connection point. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and infotainment systems per stress test requirements (HTOL, TC, HAST). |
| Dual series-pair topology | Enables compact dual-rail reverse polarity protection without external wiring or discrete layout area. |
| Low trr + low Cd synergy | Simultaneous 4 ns recovery and 1.5 pF capacitance permits use in >50 MHz signal line clamping (e.g., LIN bus edge shaping). |
| Thermally optimized package | Rth(j-sp) = 260 K/W to solder points on Pins 2/3/5/6 enables 250 mW continuous dissipation without heatsinking. |
Applications
| Automotive Reverse Polarity Protection | High-Speed Signal Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V ECUs during battery jump-start or incorrect terminal connection. IC Role / Device Role / Timing Role: Dual-series diode array acting as active polarity gate with <1 µs response to reverse voltage onset. Use Value: Prevents fuse blowout and MOSFET damage while maintaining <100 mV forward drop at 100 mA load current. |
Use Scenario: Limiting overshoot on 50 Ω CAN FD or FlexRay differential signal lines. IC Role / Device Role / Timing Role: Low-capacitance clamping diode pair shunting transients above VCC+0.7 V or below GND−0.7 V. Use Value: Adds <1.5 pF parasitic capacitance per line - preserves signal integrity up to 20 MHz edge rates. |
| USB 2.0 ESD Front-End Guard | Industrial Sensor Signal Conditioning |
Use Scenario: Pre-ESD protection stage before TVS diodes on USB D+/D− lines in automotive telematics modules. IC Role / Device Role / Timing Role: Fast-switching steering diode routing transient current away from PHY IC inputs. Use Value: 4 ns trr ensures clamping activation precedes 10 ns ESD pulse peak, reducing downstream voltage stress by ≥30 %. |
Use Scenario: Level-shifting and overvoltage limiting for 4–20 mA loop-powered sensors in engine bay environments. IC Role / Device Role / Timing Role: Bidirectional clamp protecting ADC input against ±100 V surges induced by solenoid switching. Use Value: 100 V VR rating and 150 °C Tj support uninterrupted operation during extended hot-soak conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99DW-Q | SOT363-3 package, identical pinout, but dual-common-cathode (not dual-series-pair); trr = 4 ns, VR = 100 V. | Optimized for parallel rail clamping (e.g., VCC/GND to signal), not series polarity guard. | Select when needing independent cathode referencing rather than series diode chaining. |
| NSR0230P2T5G | SOD-523 package, single diode, VF = 370 mV @ 100 mA, trr = 4 ns, VR = 30 V - lower voltage, smaller footprint. | Limited to 30 V systems; lacks multi-diode integration for dual-rail or bidirectional schemes. | Choose only for space-constrained 3.3 V/5 V logic-level clamping where 100 V rating is unnecessary. |
Compared with BAV99DW-Q, the BAV99S-QX provides true series-pair functionality essential for reverse polarity gates; versus NSR0230P2T5G, it delivers system-level integration and automotive voltage margin at the cost of slightly larger footprint.
Availability
BAV99S-QX is available at Aetrix Electronics and suitable for automotive ECU protection, high-speed serial interface clamping, and industrial sensor front-end conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAV99S-QX 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 leadership in automotive-qualified components and advanced packaging.
The BAV99S-QX belongs to Nexperia's AEC-Q101-qualified high-speed diode portfolio, engineered specifically for robust reverse polarity protection and signal integrity preservation in harsh automotive and industrial environments.
FAQ
What is the maximum continuous forward current per diode in the BAV99S-QX?
The BAV99S-QX supports 200 mA continuous forward current per diode under single-diode loaded conditions at Tsp ≤ 85 °C. Derating applies above 85 °C ambient; at 125 °C, max IF drops to approximately 120 mA based on thermal resistance (Rth(j-sp) = 260 K/W) and 250 mW total power limit.
Can the BAV99S-QX be used as a standalone ESD protection device?
No - the BAV99S-QX is not rated for IEC 61000-4-2 ESD immunity. It serves as a fast-switching pre-clamp or polarity guard; effective ESD protection requires downstream TVS diodes (e.g., PESD5V0S1BA) capable of absorbing 15 kV air discharge energy.
How does the dual-series-pair configuration affect PCB layout?
The internal series connection between Pins 1–2 and Pins 4–5 means no external traces are needed to form two independent diode strings. Layout must route protected supply (Pin 1), load (Pin 2), complementary rail (Pin 4), and return (Pin 5), while keeping Pins 3 and 6 as shared nodes - minimizing net count and parasitic inductance.
Is the marking code 'K1%' consistent across all BAV99S-QX production lots?
Yes - all BAV99S-QX units are marked 'K1%' on the top surface, where '%' is a single alphanumeric manufacturing site code (e.g., 'K1A' for Nijmegen, 'K1B' for Bangkok). This matches Nexperia's official marking specification in Table 4 of the July 2026 datasheet.
BAV99S-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 2 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 80 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BAV99S-QX FAQ
1.How can I place an order for BAV99S-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV99S-QX 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 BAV99S-QX reliable?
The price and inventory of BAV99S-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV99S-QX is usually 5 days.
3.What payment methods are accepted for BAV99S-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV99S-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV99S-QX?
BAV99S-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV99S-QX 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 BAV99S-QX?
For technical support, including BAV99S-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV99S-QX requirements.
6.How does Aetrix verify that BAV99S-QX is sourced from the original manufacturer or authorized distributors?
All BAV99S-QX 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 BAV99S-QX meets industry standards.
7.What is the process for return or replacement of BAV99S-QX?
All BAV99S-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAV99S-QX, 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 BAV99S-QX part is unused and in its original packaging.
Return procedure for BAV99S-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAV99S-QX Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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