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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated BAV5004W-7

Name: BAV5004W-7
Brand: Diodes Incorporated
SKU: BAV5004W-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BAV5004W-7

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SOD-123

Datasheet:: BAV5004W-7.pdf

Description:: DIODE GEN PURP 350V 300MA SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:8,193

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Product details

Overview

BAV5004W-7 from Diodes Incorporated is a high-voltage, fast-switching surface-mount silicon switching diode in SOD123 package, rated for 400 V repetitive peak reverse voltage, 50 ns maximum reverse recovery time, and 2.5 pF maximum junction capacitance; it serves as a clamping or protection diode in automotive power supply rail conditioning circuits.

For engineers reviewing the BAV5004W-7 datasheet, BAV5004W-7 pinout, BAV5004W-7 application, or BAV5004W-7 equivalent, key selection criteria include reverse breakdown voltage margin, switching speed under 30 mA forward/reverse current conditions, low capacitance at zero bias, thermal derating on FR-4 PCBs, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

This diode operates as a unidirectional voltage clamp with controlled reverse recovery behavior, optimized for high-frequency flyback and snubber applications where rapid turn-off minimizes switching losses. Its 400 V V_RRM rating supports 24 V and 48 V automotive systems with transient overvoltage headroom.

The device uses planar epitaxial construction to achieve stable leakage performance up to +150 °C junction temperature and maintains <2.5 pF capacitance at 0 V bias-critical for EMI-sensitive signal path isolation and RF decoupling functions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Withstands repetitive transients up to 400 V without avalanche conduction in clamp or protection roles.
t_rr	50 ns max - Enables reliable operation in 1–2 MHz switching converters without excessive reverse recovery loss.
C_T	2.5 pF max @ 0 V - Minimizes capacitive loading on high-impedance nodes in timing or sensing circuits.
I_F	300 mA continuous - Supports moderate-current DC-DC feedback paths or LED bias control without thermal runaway.
R_θJA	417 °C/W - Requires minimal copper area (per Diodes' recommended pad layout) to stay within 150 °C T_J at full power.
AEC-Q101	Qualified - Validated for automotive under-hood environments including temperature cycling, HTRB, and ESD testing.

Pinout & Package

Package: SOD123 - Surface-mount plastic case, 1.55 mm width × 3.65 mm length × 1.05 mm height, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node in clamp configuration; must be routed with low-inductance trace for snubber use.
Cathode	Forward current exit / reverse blocking terminal	Marked by cathode band on top view; tied to higher-potential rail or switched node requiring voltage clamping.

Key Features

Feature	Design Value
Fast switching speed	50 ns t_rr enables efficient operation in 1–2 MHz DC-DC converters without added gate drive complexity.
High reverse breakdown voltage	400 V V_RRM provides ≥15% margin above 350 V DC bus peaks in 48 V automotive systems.
Low junction capacitance	2.5 pF C_T limits displacement current during fast edge transitions, reducing EMI coupling into adjacent traces.
AEC-Q101 qualification	Validated for automotive powertrain and body electronics per stress test requirements including HTGB and AC-H3TRB.

Applications

Automotive Power Rail Protection

DC-DC Converter Snubber

Use Scenario: Clamping load-dump transients on 24 V battery-fed ECUs in commercial vehicles.

IC Role / Device Role / Timing Role: Voltage clamp placed between supply rail and ground to shunt >300 V spikes within nanoseconds.

Use Value: Prevents damage to downstream LDOs and microcontrollers by limiting rail voltage to ≤400 V with sub-50 ns response.

Use Scenario: Suppressing voltage overshoot across MOSFET drains in 1.2 MHz synchronous buck converters.

IC Role / Device Role / Timing Role: Fast-recovery snubber diode in RCD network to absorb leakage inductance energy.

Use Value: Reduces peak drain voltage by 25–30 V versus standard rectifiers, lowering MOSFET stress and improving efficiency.

Industrial Sensor Signal Conditioning

EMI Filter Interface Protection

Use Scenario: Protecting analog front-end inputs of current-sense amplifiers from ±100 V ESD events.

IC Role / Device Role / Timing Role: Low-capacitance clamping diode connected between input and reference rail.

Use Value: Adds <2.5 pF parasitic capacitance while clamping transients to safe levels, preserving signal bandwidth.

Use Scenario: Shielding CAN transceiver I/O pins from coupled noise on vehicle harnesses.

IC Role / Device Role / Timing Role: High-speed TVS-like clamp integrated into filter stage before differential receiver.

Use Value: Limits common-mode surges to <400 V without distorting 1 Mbps CAN edges due to 50 ns t_rr.

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
BAV21W-7	Lower V_RRM (250 V), same SOD123 package, 50 ns t_rr, 2.5 pF C_T	Not suitable for 48 V systems with >300 V transients; acceptable only in 12 V/24 V legacy designs.	Select when cost sensitivity outweighs voltage margin needs and system transients remain below 200 V.
1N4148W-7	V_RRM = 100 V, faster t_rr (4 ns), higher C_T (4 pF), same footprint	Unusable in clamping roles beyond 12 V rails; preferred only for low-voltage, ultra-high-speed logic gating.	Choose only for non-clamp, high-frequency signal steering where voltage stress is <75 V and capacitance tolerance >3 pF.

Compared with BAV21W-7 and 1N4148W-7, the BAV5004W-7 uniquely delivers 400 V standoff with automotive-grade reliability and low capacitance-making it the sole option among the three for 48 V automotive power rail protection without derating or parallel stacking.

Availability

BAV5004W-7 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and high-frequency DC-DC converter snubbing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BAV5004W-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The BAV5004W-7 belongs to Diodes' high-voltage switching diode product line, engineered specifically for automotive and industrial power conditioning applications demanding robust transient suppression and fast recovery in compact SMD packages.

FAQ

Is the BAV5004W-7 suitable for use in 48 V automotive battery systems?

Yes. With a 400 V repetitive peak reverse voltage rating and AEC-Q101 qualification, the BAV5004W-7 is explicitly designed for 48 V automotive systems-including load-dump protection and DC-DC converter snubbing-where transient voltages can exceed 350 V. Its thermal resistance and derating curve support sustained operation at +125 °C ambient.

What is the maximum forward current the BAV5004W-7 can handle continuously?

The BAV5004W-7 supports 300 mA continuous forward current at +25 °C ambient when mounted on an FR-4 PCB using Diodes' recommended pad layout. At +100 °C ambient, derating reduces this to approximately 150 mA, as shown in Figure 1 of the datasheet.

Does the BAV5004W-7 have a defined cathode marking, and how is polarity identified?

Yes. The cathode is marked by a visible band on the top surface of the SOD123 package, aligned with the "LY" product code marking. Per the top-view diagram in the datasheet, the banded end corresponds to the cathode terminal; correct orientation is essential for proper clamping function and reverse blocking.

Can the BAV5004W-7 replace the 1N4148 in high-speed digital circuits?

No. While both are switching diodes, the BAV5004W-7 has 50 ns reverse recovery time versus 4 ns for the 1N4148W-7, making it unsuitable for >10 MHz logic-level signal steering. Its higher capacitance (2.5 pF vs. ~4 pF) and slower recovery limit use to power-related clamping-not high-speed data path applications.

BAV5004W-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 350 V

Current - Average Rectified (Io):: 300mA

Voltage - Forward (Vf) (Max) @ If:: 1.29 V @ 200 mA

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 240 V

Capacitance @ Vr, F:: 0.9pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

Operating Temperature - Junction:: -55°C ~ 150°C

BAV5004W-7 FAQ

1.How can I place an order for BAV5004W-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for BAV5004W-7 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 BAV5004W-7 reliable?

The price and inventory of BAV5004W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV5004W-7 is usually 5 days.

3.What payment methods are accepted for BAV5004W-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV5004W-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAV5004W-7?

BAV5004W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BAV5004W-7 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 BAV5004W-7?

For technical support, including BAV5004W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV5004W-7 requirements.

6.How does Aetrix verify that BAV5004W-7 is sourced from the original manufacturer or authorized distributors?

All BAV5004W-7 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 BAV5004W-7 meets industry standards.

7.What is the process for return or replacement of BAV5004W-7?

All BAV5004W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV5004W-7, 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 BAV5004W-7 part is unused and in its original packaging.

Return procedure for BAV5004W-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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