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Nexperia USA Inc. BAV74-QR
- Part No.:
- BAV74-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAV74-QR.pdf
- Description:
- DIODE ARRAY GP 50V 215MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,272
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Product details
Overview
BAV74-QR from Nexperia is a high-speed double diode with common cathode configuration in SOT23 package, designed for automotive-grade signal switching. It delivers 4 ns reverse recovery time, 50 V continuous reverse voltage, 450 mA repetitive peak forward current, and is AEC-Q101 qualified for under-hood electronics.
For engineers reviewing the BAV74-QR datasheet, BAV74-QR pinout, BAV74-QR application, or BAV74-QR equivalent, key selection criteria include reverse recovery speed, dual-anode/common-cathode topology, thermal resistance (Rth(j-a) = 500 K/W), and automotive qualification status - all critical for high-frequency signal routing in constrained PCB layouts.
Technical Context
The BAV74-QR integrates two planar-technology silicon switching diodes sharing a single cathode terminal, enabling compact dual-channel clamping or steering without cross-coupling. Its 1.5 pF junction capacitance at 0 V and 1 MHz supports RF-adjacent signal paths up to ~100 MHz.
Thermal design relies on FR4 PCB mounting with standard SOT23 footprint; junction-to-ambient thermal resistance is 500 K/W, limiting continuous forward current to 125 mA when both diodes conduct simultaneously at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse recovery time (trr) | 4 ns - enables clean switching in >100 MHz digital signal routing and pulse shaping circuits |
| Repetitive peak reverse voltage (VRRM) | 60 V - supports transient suppression in 12 V/24 V automotive power domains |
| Repetitive peak forward current (IFRM) | 450 mA - sufficient for logic-level signal clamping and level translation in CAN/LIN interface protection |
| Junction-to-ambient thermal resistance | 500 K/W - requires derating above 25 °C ambient; max 125 mA dual-diode DC load at Tamb = 25 °C |
| Diode capacitance (Cd) | 1.5 pF @ 0 V, 1 MHz - minimizes signal distortion in high-speed data lines and clock distribution networks |
| Forward voltage (VF) | 855 mV @ IF = 10 mA, Tj = 25 °C - ensures low insertion loss in active bias and signal-steering applications |
| AEC-Q101 qualification | Qualified - meets stress test requirements for discrete semiconductors in automotive environments |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), optimized for automated placement and reflow soldering on FR4 PCBs with standard footprint per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Independent input node for first switching path; routed separately to avoid crosstalk with A2 |
| 2 | Anode of Diode 2 (A2) | Independent input node for second switching path; electrically isolated from A1 except through shared cathode |
| 3 | Common Cathode (CC) | Single output/return node for both diodes; simplifies PCB layout and reduces net count in dual-signal clamp designs |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | 4 ns trr enables use in >100 MHz digital signal conditioning without timing skew between channels |
| Automotive qualification | AEC-Q101 compliance ensures reliability across -40 °C to +150 °C junction temperature range in engine control units |
| Low junction capacitance | 1.5 pF minimizes loading on high-impedance signal sources such as crystal oscillator outputs or sensor amplifiers |
| Common-cathode dual-diode topology | Reduces component count and board space vs. two discrete SOT23 diodes; maintains isolation between anode paths |
| Thermally optimized SOT23 footprint | Standardized reflow pad layout (per Fig. 9) supports consistent thermal performance and manufacturability |
Applications
| Automotive LIN Bus Protection | High-Speed Logic-Level Clamping |
|---|---|
Use Scenario: Protecting LIN transceiver I/O pins from ESD and bus overvoltage in body control modules. IC Role / Device Role / Timing Role: Dual-anode clamping diode shunting transients to battery rail via common cathode connection. Use Value: 4 ns trr prevents latch-up during fast transients; 60 V VRRM accommodates load-dump spikes up to 60 V. |
Use Scenario: Level-shifting and overvoltage clamping between 3.3 V microcontroller GPIO and 5 V peripheral interfaces. IC Role / Device Role / Timing Role: Signal-path diode pair limiting voltage excursions while preserving edge integrity. Use Value: 1.5 pF capacitance avoids RC delay degradation; 855 mV VF ensures minimal DC offset in bidirectional signal paths. |
| RF Signal Steering | Dual-Channel Pulse Shaping |
Use Scenario: Selecting between two RF signal sources feeding a single LNA input in automotive radar front-ends. IC Role / Device Role / Timing Role: High-isolation switch using forward-biased diodes to route RF paths with minimal insertion loss. Use Value: Low Cd (1.5 pF) preserves impedance matching; common cathode simplifies bias network design. |
Use Scenario: Generating complementary pulse edges from a single clock source in timing-critical ADAS subsystems. IC Role / Device Role / Timing Role: Dual-diode network shaping rising/falling edges independently with matched trr. Use Value: Matched 4 ns trr ensures symmetrical edge timing; AEC-Q101 rating guarantees stability across temperature cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual-diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99-Q | Higher VRRM (70 V), slightly higher trr (6 ns), same SOT23 package and common-cathode pinout | Better suited for 42 V automotive systems; marginally slower switching limits use in >80 MHz signal paths | Select when higher reverse voltage headroom is required and 2 ns slower recovery is acceptable |
| MMBD7000 | Non-automotive grade, 70 V VRRM, 4 ns trr, but not AEC-Q101 qualified | Lacks automotive qualification; suitable only for industrial or consumer applications with lower reliability demands | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with BAV99-Q and MMBD7000, the BAV74-QR uniquely balances AEC-Q101 compliance, 4 ns speed, and 60 V VRRM in a standardized SOT23 footprint - making it the preferred choice for automotive signal integrity applications requiring both speed and qualification.
Availability
BAV74-QR is available at Aetrix Electronics and suitable for automotive LIN bus protection, high-speed logic-level clamping, and RF signal steering requiring stable component supply and traceable sourcing.
Supply support for BAV74-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-performance, reliable components for automotive, industrial, and consumer markets, with leadership in discrete and logic devices.
The BAV74-QR belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for robust signal routing and transient protection in automotive electronics under harsh thermal and electrical conditions.
FAQ
Is BAV74-QR pin-compatible with BAV99-Q?
Yes - both use identical SOT23 package with pin 1 = A1, pin 2 = A2, pin 3 = CC. Electrical differences exist (VRRM: 60 V vs. 70 V; trr: 4 ns vs. 6 ns), but PCB layout and assembly processes remain unchanged.
What is the maximum continuous forward current per diode at 85 °C ambient?
Per Figure 1, maximum continuous forward current drops to ~90 mA per diode at Tamb = 85 °C for single-diode operation, and ~55 mA when both diodes conduct simultaneously due to thermal coupling on the shared cathode die.
Can BAV74-QR be used in AC-coupled RF applications above 1 GHz?
No - its 1.5 pF junction capacitance and package parasitics limit effective use to frequencies below ~500 MHz; for >1 GHz, purpose-built RF Schottky diodes with sub-0.3 pF Cd are recommended.
Does the common cathode configuration allow independent biasing of each diode?
No - the shared cathode forces identical cathode potential for both diodes; independent biasing requires separate cathode connections, which this device does not provide.
BAV74-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
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 215mA
- Voltage - Forward (Vf) (Max) @ If:
- 855 mV @ 10 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAV74-QR FAQ
1.How can I place an order for BAV74-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV74-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 BAV74-QR reliable?
The price and inventory of BAV74-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV74-QR is usually 5 days.
3.What payment methods are accepted for BAV74-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV74-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV74-QR?
BAV74-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV74-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 BAV74-QR?
For technical support, including BAV74-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV74-QR requirements.
6.How does Aetrix verify that BAV74-QR is sourced from the original manufacturer or authorized distributors?
All BAV74-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 BAV74-QR meets industry standards.
7.What is the process for return or replacement of BAV74-QR?
All BAV74-QR units undergo pre-shipment inspection (PSI). If there is an issue with BAV74-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 BAV74-QR part is unused and in its original packaging.
Return procedure for BAV74-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAV74-QR Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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