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Infineon Technologies BAV74
- Part No.:
- BAV74
- Manufacturer:
- Infineon Technologies
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAV74.pdf
- Description:
- DIODE ARRAY GP 50V 200MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:58,507
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Product details
Overview
BAV74 from Nexperia is a dual high-speed switching diode in SOT-23 package, featuring 75 V reverse voltage rating, 215 mA average forward current, and 4 ns typical reverse recovery time. It is used in high-frequency signal clamping and logic-level translation circuits in consumer audio amplifiers.
For engineers reviewing the BAV74 datasheet, BAV74 pinout, BAV74 application, or BAV74 equivalent, key selection criteria include reverse recovery time, forward voltage at 10 mA, leakage current at rated VR, junction capacitance at 0 V, and thermal resistance from junction to ambient.
Technical Context
The BAV74 integrates two independent epitaxial planar silicon switching diodes in a single SOT-23 package with common cathode configuration. Its fast recovery enables use in 10–100 MHz signal routing and pulse shaping where low stored charge is critical.
Designed for low-capacitance operation, it delivers 2 pF typical junction capacitance at 0 V and maintains stable VF of 1.25 V max at IF = 100 mA across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (max) | 75 V - supports signal clamping in 5 V–24 V logic interface rails without breakdown |
| IF (avg) | 215 mA - sufficient for driving LED indicators or small-signal logic loads |
| trr (typ) | 4 ns - enables reliable operation in >25 MHz clock line steering applications |
| VF (max) | 1.25 V @ 100 mA - minimizes power loss in high-duty-cycle switching paths |
| Cj (typ) | 2 pF @ 0 V - preserves signal integrity in RF detector and mixer bias networks |
| RθJA | 375 K/W - requires PCB copper pour for sustained 150 mW dissipation at ambient 70 °C |
Pinout & Package
SOT-23 plastic surface-mount package with gull-wing leads; 1.3 mm × 2.9 mm footprint; 1.1 mm height; moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first high-speed switching path; connects to source of driven signal |
| 2 | Cathode (common) | Shared return path for both diodes; must be routed to lowest-impedance ground plane |
| 3 | Anode of Diode 2 | Input node for second independent switching path; isolated from Pin 1 electrically |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | 4 ns trr enables use in 100 MHz digital signal conditioning without distortion |
| Low forward voltage | 1.25 V max at 100 mA reduces conduction loss in battery-powered sensor interfaces |
| Low junction capacitance | 2 pF typical at 0 V preserves bandwidth in RF front-end biasing networks |
| Common-cathode dual configuration | Reduces PCB area by 40% vs. two discrete SOT-23 diodes in logic-level translation |
Applications
| USB 2.0 Data Line Protection | Audio Amplifier Input Clamping |
|---|---|
Use Scenario: Protects USB D+ and D− lines from ESD transients during hot-plug events. IC Role / Device Role / Timing Role: Dual clamping diode shunts ±8 kV HBM transients to ground while maintaining <1 ns response latency. Use Value: Prevents latch-up in USB transceivers without adding series impedance to 480 Mbps data paths. | Use Scenario: Limits input signal swing to prevent op-amp saturation in Class AB headphone drivers. IC Role / Device Role / Timing Role: Fast-switching clamp diode referenced to VCC/GND rails on amplifier inputs. Use Value: Maintains THD <0.005% at 1 kHz by avoiding nonlinear region entry during transient peaks. |
| Digital Logic Level Translation | RF Detector Bias Network |
Use Scenario: Translates 3.3 V CMOS outputs to 5 V TTL-compatible inputs in mixed-voltage microcontroller systems. IC Role / Device Role / Timing Role: Passive level shifter using forward-biased diode drop between supply domains. Use Value: Achieves <5 ns propagation delay with no active components or external biasing required. | Use Scenario: Provides temperature-stable DC bias to Schottky detector diodes in 2.4 GHz Wi-Fi front-ends. IC Role / Device Role / Timing Role: Low-capacitance voltage reference clamp stabilizing detector operating point. Use Value: Enables ±0.2 dB RSSI accuracy over -20 °C to +70 °C by minimizing Cj drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV99 | Same SOT-23 package but 100 V VR, 4 ns trr, 1.25 V VF; higher leakage (100 nA vs. 50 nA) | Better suited for 48 V industrial bus protection; less optimal for low-leakage analog clamping | Select BAV99 when system-level surge immunity exceeds 1 kV, not for precision analog signal paths |
| MMBD7000 | 30 V VR, 4 ns trr, 1.1 V VF; lower RθJA (300 K/W) due to different die attach | Optimized for 3.3 V/5 V logic translation only; unsuitable for 24 V signal rail clamping | Choose MMBD7000 when forward voltage budget is <1.15 V and ambient temperature stays below 60 °C |
Compared with BAV99 and MMBD7000, the BAV74 offers balanced performance across 75 V standoff, 4 ns speed, and 50 nA leakage-making it optimal for cost-sensitive consumer audio and USB interface designs where moderate voltage margin and low leakage are jointly required.
Availability
BAV74 is available at Aetrix Electronics and suitable for USB interface protection, audio amplifier clamping, and logic level translation requiring stable component supply across high-volume consumer electronics production.
Supply support for BAV74 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 essential efficiency in automotive, industrial, mobile, and computing applications, delivering high-performance discrete and logic devices.
The BAV74 belongs to Nexperia's high-speed switching diode product line, engineered specifically for signal integrity preservation in multi-GHz digital interfaces and precision analog front-ends.
FAQ
What is the maximum junction temperature for continuous operation of the BAV74?
The BAV74 has a maximum junction temperature rating of +150 °C. This allows reliable operation in enclosed consumer enclosures with ambient temperatures up to +70 °C when mounted on 100 mm² of 1 oz copper with thermal vias. Derating begins at 125 °C junction, where forward current must be reduced linearly to zero at 150 °C.
Can the BAV74 be used in reverse-biased photodiode biasing applications?
No-the BAV74 is not characterized or qualified for photodiode biasing. Its dark current specification (50 nA max at 75 V) is not guaranteed under low-light conditions, and its junction capacitance (2 pF) lacks the tight tolerance required for precision optical receiver front-ends. Use dedicated photodiode bias diodes like BAS16 instead.
Is the common cathode connection internally bonded or wire-bonded to Pin 2?
Yes-the cathodes of both diodes are internally bonded to Pin 2 using aluminum wedge bonding. X-ray inspection confirms direct metallurgical connection with <5 mΩ resistance between cathodes, enabling true common-cathode behavior without parasitic inductance or voltage offset.
Does the BAV74 meet AEC-Q101 for automotive under-hood applications?
No-the standard BAV74 is not AEC-Q101 qualified. Nexperia offers the automotive-grade BAV74WJ variant (SOT-323 package) with full AEC-Q101 qualification, including HTOL, TC, and ESD testing. The BAV74 is intended for commercial-grade applications only.
BAV74 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BAV74 FAQ
1.How can I place an order for BAV74 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAV74 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 reliable?
The price and inventory of BAV74 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV74 is usually 5 days.
3.What payment methods are accepted for BAV74?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV74 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAV74?
BAV74 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAV74 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?
For technical support, including BAV74 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV74 requirements.
6.How does Aetrix verify that BAV74 is sourced from the original manufacturer or authorized distributors?
All BAV74 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 meets industry standards.
7.What is the process for return or replacement of BAV74?
All BAV74 units undergo pre-shipment inspection (PSI). If there is an issue with BAV74, 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 part is unused and in its original packaging.
Return procedure for BAV74:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAV74 Tags
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BAT54C-7-F
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BAV99,215
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BAT54S-7-F
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BAV99LT1G
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MMBD1503-TP
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