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

Diodes Incorporated BAV19W-7

Name: BAV19W-7
Brand: Diodes Incorporated
SKU: BAV19W-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BAV19W-7

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SOD-123

Datasheet:: BAV19W-7.pdf

Description:: DIODE GEN PURP 100V 400MA SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:4,430

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Product details

Overview

BAV19W-7 from Diodes Incorporated is a surface-mount fast-switching silicon switching diode in SOD-123 package, rated for 100 V peak repetitive reverse voltage (V_RRM), 400 mA forward current (I_F), and 50 ns reverse recovery time (t_RR). It serves as a general-purpose clamping, protection, and signal routing device in DC-DC converters, logic interface circuits, and low-power rectification.

For engineers reviewing the BAV19W-7 datasheet, BAV19W-7 pinout, BAV19W-7 application, or BAV19W-7 equivalent, key selection criteria include its 100 V V_RRM, 1.25 V max V_FM at 200 mA, 5.0 pF junction capacitance at 0 V, 250 mW power dissipation, and SOD-123 thermal resistance of 500 °C/W - all critical for high-speed switching integrity and thermal reliability in space-constrained designs.

Technical Context

This diode operates as a unidirectional PN-junction switch with cathode-band polarity marking. Its 50 ns t_RR enables reliable operation in pulse-width modulation (PWM) control feedback paths and digital signal edge conditioning up to ~10 MHz.

The 100 V V_RRM and 120 V non-repetitive VRM rating support transient overvoltage tolerance in 24 V industrial bus interfaces and 12 V automotive subsystems, while its 15 nA IR at +100 °C ensures low leakage in battery-backed monitoring circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - supports continuous blocking in 24 V nominal systems with safety margin
I_F	400 mA - sufficient for logic-level signal routing and low-current clamp loads
t_RR	50 ns - enables clean switching in PWM frequencies up to 10 MHz
C_T	5.0 pF @ 0 V - minimizes capacitive loading on high-impedance signal nodes
V_FM	1.25 V max @ 200 mA - limits forward conduction loss in low-voltage bias networks
R_θJA	500 °C/W - requires minimal PCB copper area for thermal management in SOD-123 layout

Pinout & Package

Package: SOD-123 surface-mount plastic case (UL 94V-0), 0.01 g weight, moisture sensitivity level 1 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential node during conduction; requires trace routing for thermal relief
Cathode (marked by band)	Forward current exit / reverse voltage reference	Common return path for clamping; must be tied to stable reference or ground plane

Key Features

Feature	Design Value
Fast switching speed	50 ns t_RR enables use in >5 MHz digital signal routing without distortion
High reverse breakdown voltage	120 V (V_(BR)R) provides margin against inductive kick in relay drivers
Surface-mount compatibility	SOD-123 footprint supports automated placement and reflow at IPC-A-610 Class 2
Lead-free & RoHS-compliant construction	Matte tin-plated Alloy 42 leadframe meets EU Directive 2015/863/EU (RoHS 3)

Applications

DC-DC Converter Snubber

Logic-Level Signal Clamping

Use Scenario: Suppresses voltage spikes across MOSFET drains in buck converter flyback phases.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode placed between switch node and input rail.

Use Value: 50 ns t_RR prevents reverse conduction overlap; 100 V V_RRM withstands 24 V system transients.

Use Scenario: Limits TTL/CMOS input voltage excursions beyond supply rails.

IC Role / Device Role / Timing Role: Bidirectional ESD protection and overvoltage clamp at microcontroller I/O pins.

Use Value: 5.0 pF C_T avoids signal integrity degradation; 15 nA IR preserves low-power sleep current.

Low-Power Rectification

Inductive Load Flyback Suppression

Use Scenario: Half-wave rectification in 5–12 V auxiliary power supplies.

IC Role / Device Role / Timing Role: Unidirectional current path converting AC ripple to smoothed DC.

Use Value: 400 mA I_F supports up to 3 W output; 1.25 V V_FM keeps conduction loss under 250 mW.

Use Scenario: Freewheeling path for solenoid or relay coils during de-energization.

IC Role / Device Role / Timing Role: Reverse-biased blocking during coil energization; conducts flyback current when switched off.

Use Value: 120 V V_(BR)R handles L·di/dt spikes; SOD-123 thermal mass sustains 2.5 A surge for 1 ms.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast-switching diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4148W-7-F	V_RRM = 100 V, t_RR = 4 ns, C_T = 4 pF - faster but lower surge rating (I_FSM = 2 A)	Better for <1 MHz high-frequency signal steering; less robust for 24 V inductive flyback	Select when speed dominates over surge tolerance
BAV20W-7-F	V_RRM = 150 V, V_(BR)R = 200 V - higher blocking, same package and t_RR	Preferred for 48 V industrial bus protection where 100 V margin is insufficient	Select when system voltage exceeds 24 V nominal

Compared with BAV19W-7, 1N4148W-7-F trades surge robustness for nanosecond-scale switching, while BAV20W-7-F extends voltage headroom without altering thermal or layout constraints - enabling direct upgrade paths based on system voltage and transient profile.

Availability

BAV19W-7 is available at Aetrix Electronics and suitable for DC-DC converter snubbers, logic-level signal clamping, and low-power rectification requiring stable component supply across industrial control, consumer electronics, and embedded sensor modules.

Supply support for BAV19W-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 BAV19W-7 belongs to Diodes' general-purpose switching diode product line, engineered for cost-sensitive, high-volume applications demanding consistent fast switching, thermal stability, and RoHS-compliant packaging in compact SMD formats.

FAQ

What is the maximum operating temperature for BAV19W-7?

The BAV19W-7 has an operating junction temperature range of −55 °C to +150 °C. Its thermal resistance (R_θJA) is 500 °C/W on standard FR-4 PCB with minimum recommended pad layout. Derating begins above +25 °C ambient, reaching zero power dissipation at +150 °C per the published derating curve.

Is BAV19W-7 suitable for automotive applications?

No - BAV19W-7 is commercial-grade and not AEC-Q101 qualified. For automotive use, Diodes offers the BAV19WQ-7-F variant, which is manufactured in IATF 16949-certified facilities, PPAP-capable, and qualified to AEC-Q101 standards for stress testing and reliability.

How does the SOD-123 package affect PCB layout?

The SOD-123 package requires precise pad dimensions per Diodes' outline drawing: 0.90 mm × 0.95 mm pads with 4.05 mm center-to-center spacing. Thermal relief traces are recommended for the cathode pad due to its role as the primary heat path; solder mask defined pads improve reflow yield and prevent bridging.

What is the typical forward voltage at low current?

At 10 mA forward current and +25 °C, the typical forward voltage is approximately 0.75 V, as inferred from the Fig. 2 forward characteristic curve. This value rises to 0.85 V at 25 °C and 10 mA per the family's normalized V_F vs. I_F behavior, supporting accurate bias network modeling in low-power analog stages.

BAV19W-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 400mA

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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

Operating Temperature - Junction:: -65°C ~ 150°C

BAV19W-7 FAQ

1.How can I place an order for BAV19W-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for BAV19W-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 BAV19W-7 reliable?

The price and inventory of BAV19W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV19W-7 is usually 5 days.

3.What payment methods are accepted for BAV19W-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV19W-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAV19W-7?

BAV19W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BAV19W-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 BAV19W-7?

For technical support, including BAV19W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV19W-7 requirements.

6.How does Aetrix verify that BAV19W-7 is sourced from the original manufacturer or authorized distributors?

All BAV19W-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 BAV19W-7 meets industry standards.

7.What is the process for return or replacement of BAV19W-7?

All BAV19W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAV19W-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 BAV19W-7 part is unused and in its original packaging.

Return procedure for BAV19W-7:

1.Submit a request within 90 days.

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

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