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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. PDZ4.3BGWJ

Name: PDZ4.3BGWJ
Brand: Nexperia USA Inc.
SKU: PDZ4.3BGWJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDZ4.3BGWJ

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: PDZ4.3BGWJ.pdf

Description:: DIODE ZENER 4.3V 365MW SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:6,272

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Product details

Overview

PDZ4.3BGW from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions at 4.3 V nominal Zener voltage with ±2 % tolerance (B-series), 90 Ω maximum differential resistance at I_Z = 5 mA, and AEC-Q101 qualification for automotive-grade reliability. It operates with low reverse current (≤3 μA at V_R = 3.4 V) and supports transient suppression up to 40 W non-repetitive peak power.

For engineers reviewing the PDZ4.3BGW datasheet, PDZ4.3BGW pinout, PDZ4.3BGW application, or PDZ4.3BGW equivalent, this device is selected for stable low-voltage reference generation, overvoltage clamping in sensor interfaces, and ESD-robust biasing in automotive control modules where tight voltage tolerance and thermal stability are critical.

Technical Context

The PDZ4.3BGW implements a silicon planar Zener structure optimized for stable breakdown at 4.3 V with a temperature coefficient of −2.5 mV/K at I_Z = 5 mA, enabling predictable drift compensation in temperature-sensitive circuits. Its low 90 Ω dynamic impedance ensures minimal output voltage variation under load changes.

Rated for 365 mW total power dissipation on standard FR4 PCB (single-sided copper, tin-plated), it delivers reliable regulation across −55 °C to +150 °C ambient range and achieves 340 K/W junction-to-ambient thermal resistance in free air - suitable for compact, thermally constrained layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	4.17 V to 4.48 V at I_Z = 5 mA - defines precise regulation threshold with ±2 % tolerance for accurate reference design
Differential Resistance r_dif	≤90 Ω at I_Z = 5 mA - ensures minimal output voltage shift under varying load current
Reverse Current I_R	≤3 μA at V_R = 3.4 V - guarantees low leakage in standby or high-impedance bias networks
Power Dissipation P_tot	365 mW at T_amb ≤ 25 °C - sets continuous operating limit on standard FR4 PCB
Non-repetitive Peak Power P_ZSM	40 W for t_p = 100 μs - enables robust transient voltage suppression without failure
Temperature Coefficient S_Z	−2.5 mV/K at I_Z = 5 mA - quantifies predictable negative drift for thermal compensation planning
Junction Temperature T_j	−55 °C to +150 °C - supports operation in under-hood automotive environments

Pinout & Package

SOD123 surface-mount plastic package: 2.80 mm × 1.70 mm footprint, 1.3 mm height, cathode marked by bar on top surface.

Pin/Terminal	Circuit Role	Design Meaning
1 (K)	Cathode	Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation
2 (A)	Anode	Connected to ground or lower-potential rail; reverse-biased configuration enables Zener conduction

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control units and body electronics per stress-test requirements
±2 % Zener voltage tolerance (B-series)	Reduces need for post-production trimming in voltage reference circuits
Low 3 μA max reverse current at 3.4 V	Minimizes quiescent power loss in always-on monitoring circuits
40 W non-repetitive peak power capability	Withstands ISO 7637-2 pulse 1/2a transients without degradation
340 K/W R_th(j-a) in free air	Enables thermal design without heatsinking in space-constrained modules

Applications

Automotive Sensor Biasing

Industrial Analog Reference

Use Scenario: Providing stable 4.3 V reference for analog front-end amplifiers in vehicle speed or pressure sensors.

IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, maintaining constant bias point despite supply ripple or temperature variation.

Use Value: Enables <±0.5 % measurement accuracy over −40 °C to +125 °C due to matched temperature coefficient and low dynamic impedance.

Use Scenario: Generating precision reference voltage for 12-bit ADCs in programmable logic controllers.

IC Role / Device Role / Timing Role: Functions as passive voltage clamp and calibration reference, replacing higher-cost IC references where moderate drift is acceptable.

Use Value: Delivers 4.3 V ±2 % stability with <10 ppm/°C effective drift when combined with simple RC filtering.

USB Port Overvoltage Protection

Smart Actuator Feedback Clamping

Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in automotive infotainment systems.

IC Role / Device Role / Timing Role: Shunt protector activated during >5.5 V excursions, diverting surge current away from downstream USB PHY.

Use Value: Absorbs 40 W pulses (100 μs) without parametric shift, preserving signal integrity during ISO 10605 ESD events.

Use Scenario: Limiting feedback voltage swing in closed-loop motor driver circuits to protect microcontroller ADC inputs.

IC Role / Device Role / Timing Role: Zener clamp placed between actuator position sensor output and MCU input pin.

Use Value: Prevents ADC saturation during mechanical overtravel by capping voltage at 4.3 V with <90 Ω dynamic impedance for fast recovery.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C4V3	Same 4.3 V nominal, ±5 % tolerance, SOT23 package, 300 mW P_tot	Larger package footprint; lower surge rating (25 W); no AEC-Q101 qualification	Select for cost-sensitive consumer designs where automotive qualification is unnecessary
MMSZ4V3T1G	4.3 V nominal, ±5 %, SOD123 package, 500 mW P_tot, −2.5 mV/K S_Z	Higher power rating but wider tolerance; not AEC-Q101 qualified	Prefer when higher continuous dissipation is required and automotive compliance is not mandated

Compared with BZX84-C4V3 and MMSZ4V3T1G, PDZ4.3BGW offers tighter ±2 % tolerance and AEC-Q101 qualification at identical SOD123 footprint - making it the only choice for automotive-critical voltage references requiring guaranteed long-term stability and stress-test validation.

Availability

PDZ4.3BGW is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and USB-C power delivery protection circuits requiring stable component supply with full traceability and lifecycle management.

Supply support for PDZ4.3BGW 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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

The PDZ-GW series targets automotive-grade voltage regulation and protection, engineered specifically to meet AEC-Q101 requirements while maintaining tight tolerances and robust transient handling in compact SMD packages.

FAQ

What is the maximum reverse voltage (V_R) that PDZ4.3BGW can block before Zener conduction begins?

PDZ4.3BGW exhibits ≤3 μA reverse current at V_R = 3.4 V, meaning it remains effectively non-conductive below its nominal 4.3 V Zener voltage. The device enters controlled breakdown within its specified 4.17 V to 4.48 V band at I_Z = 5 mA - no distinct "blocking voltage" is defined beyond this threshold, as Zener operation is intentional above V_Z.

Can PDZ4.3BGW be used in parallel for higher power dissipation?

No - Zener diodes must not be paralleled due to manufacturing variations in V_Z and dynamic impedance. Even small mismatches cause current hogging, leading to thermal runaway and premature failure. For higher power needs, select a single higher-rated device like PDZ5.1BGW or use active regulation instead.

Is the SOD123 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies reflow soldering as the only recommended method. The SOD123 footprint aligns with IPC-7351B standards, and the device is qualified for JEDEC J-STD-020D moisture sensitivity level 1, supporting peak temperatures up to 260 °C with 30-second dwell time without degradation.

How does the −2.5 mV/K temperature coefficient affect circuit performance at elevated temperatures?

At +125 °C ambient, the Zener voltage decreases by approximately 255 mV from its 25 °C value (100 K × −2.5 mV/K), shifting V_Z from 4.3 V to ~4.045 V. This predictable negative drift allows compensation via series resistor networks or system-level calibration - confirmed in Figure 3 of the datasheet for I_Z = 1 mA to 20 mA.

PDZ4.3BGWJ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: PDZ-GW

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 4.3 V

Tolerance:: ±3.6%

Power - Max:: 365 mW

Impedance (Max) (Zzt):: 90 Ohms

Current - Reverse Leakage @ Vr:: 3 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 100 mA

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

PDZ4.3BGWJ FAQ

1.How can I place an order for PDZ4.3BGWJ through Aetrix?

Please submit a Request for Quotation (RFQ) for PDZ4.3BGWJ 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 PDZ4.3BGWJ reliable?

The price and inventory of PDZ4.3BGWJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ4.3BGWJ is usually 5 days.

3.What payment methods are accepted for PDZ4.3BGWJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ4.3BGWJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDZ4.3BGWJ?

PDZ4.3BGWJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDZ4.3BGWJ 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 PDZ4.3BGWJ?

For technical support, including PDZ4.3BGWJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ4.3BGWJ requirements.

6.How does Aetrix verify that PDZ4.3BGWJ is sourced from the original manufacturer or authorized distributors?

All PDZ4.3BGWJ 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 PDZ4.3BGWJ meets industry standards.

7.What is the process for return or replacement of PDZ4.3BGWJ?

All PDZ4.3BGWJ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ4.3BGWJ, 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 PDZ4.3BGWJ part is unused and in its original packaging.

Return procedure for PDZ4.3BGWJ:

1.Submit a request within 90 days.

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

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