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

Nexperia USA Inc. BAV20,143

Name: BAV20,143
Brand: Nexperia USA Inc.
SKU: BAV20,143
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BAV20,143

Manufacturer:: Nexperia USA Inc.

Category:: Single Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: BAV20,143.pdf

Description:: DIODE GEN PURP 150V 250MA ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:3,934

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Product details

Overview

BAV20,143 from NXP Semiconductors is a hermetically sealed glass axial-leaded switching diode in SOD27 (DO-35) package, rated for 150 V continuous reverse voltage and 200 V repetitive peak reverse voltage, with 50 ns max reverse recovery time and 625 mA repetitive peak forward current. It serves as a high-speed rectifier or signal clamping device in video output stages of color television and digital voltmeters.

For engineers reviewing the BAV20,143 datasheet, BAV20,143 pinout, BAV20,143 application, or BAV20,143 equivalent, key selection criteria include reverse recovery time under 50 ns, thermal resistance of 375 K/W at 10 mm lead length, junction temperature rating up to 175 °C, and cathode-marked axial lead configuration for unambiguous PCB orientation.

Technical Context

The BAV20,143 is a planar-processed silicon switching diode optimized for general-purpose high-speed applications where moderate voltage blocking and fast turn-off are required. Its 5 pF typical capacitance at 0 V reverse bias and 100 nA max reverse leakage at VRmax support stable operation in RF-coupled and precision analog signal paths.

Thermal performance is defined for FR4 PCB mounting with 10 mm lead length: Rth j-a = 375 K/W and Rth j-tp = 240 K/W. The device operates across −65 °C to +175 °C storage and junction temperature ranges, enabling use in industrial environments with elevated ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - maximum non-repetitive reverse voltage the diode withstands without breakdown during transient conditions
V_R	150 V - maximum continuous DC reverse voltage applied across cathode-anode without degradation
I_FRM	625 mA - peak repetitive forward current sustainable in pulsed operation with defined duty cycle
t_rr	50 ns - time required for diode to transition from forward conduction to full reverse blocking state
C_d	5 pF - junction capacitance at 1 MHz and 0 V bias, critical for high-frequency signal integrity
V_F @ 100 mA	1.0 V - forward voltage drop determining conduction loss and self-heating in low-duty-cycle switching
R_{th j-a}	375 K/W - thermal resistance from junction to ambient, defining temperature rise per watt dissipated on standard FR4 board

Pinout & Package

BAV20,143 uses a hermetically sealed axial-leaded SOD27 (DO-35) glass package with cathode identified by a black band on the body. Leads are tinned copper, 10 mm nominal length, suitable for through-hole PCB mounting.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; must be biased positive relative to cathode for conduction
Cathode	Forward current exit point / reverse voltage reference	Marked with black band; connected to higher-potential side during reverse bias; defines polarity-sensitive placement

Key Features

Feature	Design Value
Hermetic glass encapsulation	Prevents moisture ingress and long-term parameter drift in humid industrial environments
50 ns reverse recovery time	Enables reliable operation in 10–20 MHz switching circuits such as video sync clamps and pulse shaping networks
175 °C maximum junction temperature	Supports sustained operation in enclosed enclosures without forced air cooling
100 nA max reverse leakage at VRmax	Minimizes standby power loss and signal distortion in high-impedance sampling circuits

Applications

Video Output Stage

Digital Voltmeter Input Protection

Use Scenario: Clamping sync pulses and blanking signals in RGB video driver circuits of CRT-based color television receivers.

IC Role / Device Role / Timing Role: Fast-switching clamp diode providing precise DC restoration and overvoltage limiting at video amplifier outputs.

Use Value: 50 ns t_rr ensures minimal pulse distortion; 200 V V_RRM accommodates flyback transients in deflection circuits.

Use Scenario: Protecting high-impedance analog front-end inputs of handheld digital multimeters from accidental overvoltage events.

IC Role / Device Role / Timing Role: Bidirectional ESD and overvoltage clamp placed across input terminals before buffer amplifiers.

Use Value: 100 nA IR at VRmax prevents loading of mV-range measurements; hermetic seal maintains leakage stability over 10+ year field life.

Oscilloscope Vertical Amplifier

Industrial Sensor Signal Conditioning

Use Scenario: DC restoration and baseline stabilization in wideband vertical amplifier stages of analog oscilloscopes.

IC Role / Device Role / Timing Role: AC-coupled signal path clamp diode restoring average DC level after coupling capacitors.

Use Value: 5 pF C_d minimizes high-frequency attenuation; 1.0 V V_F at 100 mA enables predictable clamping threshold.

Use Scenario: Level-shifting and transient suppression for millivolt-level thermocouple or strain gauge outputs in PLC analog input modules.

IC Role / Device Role / Timing Role: Low-leakage series protection element isolating sensor bridge from noisy supply rails and digital backplanes.

Use Value: 375 K/W R_{th j-a} allows direct PCB mounting without heatsinks; −65 °C to +175 °C T_stg supports operation in unheated factory floors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4148,113	Lower V_RRM (100 V), faster t_rr (4 ns), same DO-35 package	Better for <10 MHz logic-level switching; unsuitable for >125 V reverse stress	Select when speed dominates voltage rating and operating voltage stays below 75 V
BAV21,113	Higher V_RRM (250 V), identical t_rr, same thermal specs and package	Drop-in replacement where 200–250 V reverse transients occur, e.g., flyback snubbers	Select when system-level surge testing requires ≥220 V margin beyond 150 V DC rating

Compared with 1N4148,113 and BAV21,113, BAV20,143 provides optimal balance of 200 V robustness and 50 ns switching in cost-sensitive industrial instrumentation-neither over-specified nor marginal for 100–150 V DC-biased signal paths.

Availability

BAV20,143 is available at Aetrix Electronics and suitable for video output stages, digital voltmeter input protection, oscilloscope vertical amplifiers, and industrial sensor signal conditioning requiring stable component supply across extended production lifecycles.

Supply support for BAV20,143 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

BAV20,143 belongs to NXP's legacy discrete diode portfolio designed for reliability-critical general-purpose switching in test equipment and broadcast electronics, emphasizing long-term parametric stability and hermetic robustness.

FAQ

What is the cathode identification method for BAV20,143?

The cathode is marked by a distinct black band on the glass body of the SOD27 (DO-35) package. This band aligns with the cathode terminal and must face the higher-potential node in circuit layout. Lead polarity is verified by forward-biasing between anode and cathode with ≤1.25 V, yielding ≥100 mA conduction at room temperature.

Can BAV20,143 replace 1N4148 in high-frequency applications?

BAV20,143 is not recommended as a direct replacement for 1N4148 in >5 MHz applications due to its 50 ns reverse recovery time versus 4 ns for 1N4148. While both use DO-35 packages, BAV20,143's higher V_RRM comes at the cost of slower switching-verified by NXP's Fig.8 test waveforms and trr measurement conditions.

What is the maximum allowable PCB trace width for soldering BAV20,143?

No specific trace width is mandated, but NXP specifies thermal derating based on 10 mm lead length and FR4 board construction. For reliable thermal performance, maintain ≥1.5 mm copper pour adjacent to each lead pad and avoid excessive copper removal near the diode body to preserve R_{th j-a} = 375 K/W.

Does BAV20,143 meet RoHS requirements?

BAV20,143 was manufactured prior to RoHS enforcement and contains lead in the solder dip and glass-to-metal seal. It is exempt under RoHS Annex III for "discrete semiconductors in hermetically sealed glass packages" and remains available for legacy industrial repair and military/aerospace maintenance under exemption 7a.

BAV20,143 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Cut Tape (CT)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io):: 250mA

Voltage - Forward (Vf) (Max) @ If:: 1.25 V @ 200 mA

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 100 nA @ 150 V

Capacitance @ Vr, F:: 5pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ALF2

Operating Temperature - Junction:: 175°C (Max)

BAV20,143 FAQ

1.How can I place an order for BAV20,143 through Aetrix?

Please submit a Request for Quotation (RFQ) for BAV20,143 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 BAV20,143 reliable?

The price and inventory of BAV20,143 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAV20,143 is usually 5 days.

3.What payment methods are accepted for BAV20,143?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAV20,143 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BAV20,143?

BAV20,143 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BAV20,143 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 BAV20,143?

For technical support, including BAV20,143 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAV20,143 requirements.

6.How does Aetrix verify that BAV20,143 is sourced from the original manufacturer or authorized distributors?

All BAV20,143 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 BAV20,143 meets industry standards.

7.What is the process for return or replacement of BAV20,143?

All BAV20,143 units undergo pre-shipment inspection (PSI). If there is an issue with BAV20,143, 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 BAV20,143 part is unused and in its original packaging.

Return procedure for BAV20,143:

1.Submit a request within 90 days.

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

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