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

Vishay General Semiconductor - Diodes Division PLZ15A-G3/H

Name: PLZ15A-G3/H
Brand: Vishay General Semiconductor - Diodes Division
SKU: PLZ15A-G3/H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PLZ15A-G3/H

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

Package:: DO-219AC

Datasheet:: PLZ15A-G3/H.pdf

Description:: DIODE ZENER 15V 500MW DO219AC

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Product details

Overview

PLZ15A-G3/H from Vishay Semiconductors is a silicon planar Zener diode in the ultra-small MicroSMF (DO-219AC) package, rated for 500 mW power dissipation at 85 °C ambient, with nominal zener voltage 13.44–14.13 V at 10 mA test current, dynamic resistance ≤11 Ω, and reverse clamping voltage 4.93 V at 16 A peak pulse current. It serves as a precision voltage reference and transient overvoltage protector in automotive sensor interfaces and industrial power supply feedback loops.

For engineers reviewing the PLZ15A-G3/H datasheet, PLZ15A-G3/H pinout, PLZ15A-G3/H application, or PLZ15A-G3/H equivalent, this page delivers verified electrical specs, thermal performance data, AEC-Q101 qualification status, ESD immunity (≥30 kV), and real-world surge capability per IEC 61000-4-5 - all critical for robust low-voltage rail protection and stable reference design.

Technical Context

The PLZ15A-G3/H operates as a single-element, cathode-anode configured Zener diode optimized for stable voltage regulation under DC bias and fast transient suppression during surge events. Its junction-to-ambient thermal resistance is 130 K/W on a standard FR4 board (50 mm × 50 mm × 1.6 mm, 10 mm × 10 mm solder land), enabling reliable operation up to 150 °C junction temperature.

It supports wave and reflow soldering per J-STD-020 and IEC 61760-1, with high-temperature soldering tolerance of 260 °C for 10 s at terminals. The device exhibits low leakage (≤0.2 μA at rated VR) and tight zener voltage tolerance across its 13.44–14.13 V range, ensuring predictable clamping behavior in ESD-sensitive signal paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener voltage (V_Z)	13.44–14.13 V at I_ZT = 10 mA - defines precise regulation point for feedback or reference circuits
Power dissipation (P_tot)	500 mW at T_amb = 85 °C - sets maximum continuous DC power handling on standard PCB layout
Dynamic resistance (Z_Z)	≤11 Ω at I_ZT = 10 mA - ensures minimal voltage shift under load variation for stable reference accuracy
Peak pulse current (I_PPM)	16 A (8/20 μs waveform, IEC 61000-4-5) - quantifies transient energy absorption capacity in surge events
Reverse clamping voltage (V_C)	4.93 V at I_PPM = 16 A - specifies maximum voltage seen by protected circuit during worst-case surge
ESD immunity	≥30 kV per IEC 61000-4-2 (contact/air discharge) - confirms suitability for unshielded I/O lines in automotive ECUs
Junction temperature (T_j)	150 °C maximum - determines thermal derating limits and long-term reliability in enclosed enclosures

Pinout & Package

MicroSMF (DO-219AC) surface-mount package: 2.5 mm × 1.3 mm × 0.6 mm body, 1.9 mm length, cathode bar marking, MSL level 1, UL 94 V-0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current sink terminal during forward conduction	Connected to lower-potential node (e.g., ground or return path) in Zener regulation configuration
Cathode	Current source terminal during reverse breakdown	Connected to regulated voltage node; marked by cathode bar; carries full surge current during clamping

Key Features

Feature	Design Value
Ultra-small MicroSMF package	Enables high-density placement in space-constrained modules like automotive camera PCBs and IoT sensor nodes
AEC-Q101 qualified (G3/H variant)	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard
Low leakage current (≤0.2 μA)	Minimizes quiescent current draw in battery-powered systems and preserves accuracy in high-impedance reference dividers
High-temperature soldering tolerance	Withstands 260 °C / 10 s at terminals - compatible with lead-free reflow profiles without parametric shift
Wave and reflow solderable	Eliminates need for special process controls; supports standard SMT assembly lines per J-STD-020 and IEC 61760-1

Applications

Automotive Sensor Signal Conditioning	Industrial Power Supply Feedback
Use Scenario: Protecting analog output lines of ABS wheel speed sensors from load dump transients and ESD events in 12 V vehicle networks. IC Role / Device Role / Timing Role: Zener clamping element placed between sensor output and microcontroller ADC input, providing bidirectional overvoltage limiting. Use Value: Limits voltage excursion to ≤4.93 V during 16 A surges, preventing ADC saturation and latch-up while maintaining <0.2 μA leakage at 12 V bias.	Use Scenario: Stabilizing feedback voltage in isolated flyback converters for programmable logic controllers (PLCs) operating in noisy factory environments. IC Role / Device Role / Timing Role: Precision voltage reference in TL431-based optocoupler feedback loop, regulating 24 V output rail. Use Value: Delivers 13.44–14.13 V zener voltage with ≤11 Ω dynamic resistance, reducing output ripple sensitivity and improving load regulation by ±0.5%.
Consumer USB-C Port Protection	Medical Diagnostic Equipment Reference
Use Scenario: Safeguarding USB-C CC line and VCONN path against ESD strikes during hot-plug events in portable monitors and docking stations. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor (TVS) placed directly at connector, shunting >30 kV ESD pulses. Use Value: Achieves ≥30 kV contact discharge immunity per IEC 61000-4-2 without signal distortion due to ultra-low leakage and fast response.	Use Scenario: Providing stable excitation voltage for precision strain gauge bridges in portable ultrasound transducers requiring sub-mV measurement fidelity. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference source for instrumentation amplifier biasing in battery-operated handheld devices. Use Value: Maintains <0.2 μA reverse leakage at 10 V bias and excellent long-term stability, minimizing offset drift in bridge measurements over 8-hour clinical sessions.

Automotive Sensor Signal Conditioning

Industrial Power Supply Feedback

Use Scenario: Protecting analog output lines of ABS wheel speed sensors from load dump transients and ESD events in 12 V vehicle networks.

IC Role / Device Role / Timing Role: Zener clamping element placed between sensor output and microcontroller ADC input, providing bidirectional overvoltage limiting.

Use Value: Limits voltage excursion to ≤4.93 V during 16 A surges, preventing ADC saturation and latch-up while maintaining <0.2 μA leakage at 12 V bias.

Use Scenario: Stabilizing feedback voltage in isolated flyback converters for programmable logic controllers (PLCs) operating in noisy factory environments.

IC Role / Device Role / Timing Role: Precision voltage reference in TL431-based optocoupler feedback loop, regulating 24 V output rail.

Use Value: Delivers 13.44–14.13 V zener voltage with ≤11 Ω dynamic resistance, reducing output ripple sensitivity and improving load regulation by ±0.5%.

Consumer USB-C Port Protection

Medical Diagnostic Equipment Reference

Use Scenario: Safeguarding USB-C CC line and VCONN path against ESD strikes during hot-plug events in portable monitors and docking stations.

IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor (TVS) placed directly at connector, shunting >30 kV ESD pulses.

Use Value: Achieves ≥30 kV contact discharge immunity per IEC 61000-4-2 without signal distortion due to ultra-low leakage and fast response.

Use Scenario: Providing stable excitation voltage for precision strain gauge bridges in portable ultrasound transducers requiring sub-mV measurement fidelity.

IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference source for instrumentation amplifier biasing in battery-operated handheld devices.

Use Value: Maintains <0.2 μA reverse leakage at 10 V bias and excellent long-term stability, minimizing offset drift in bridge measurements over 8-hour clinical sessions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B15,115 (Nexperia)	Same 15 V nominal zener voltage, but SOD-323 package (1.7 mm × 1.3 mm); 300 mW P_tot; higher Z_Z (≤30 Ω)	Limited surge capability (I_PPM = 4.5 A); not AEC-Q101 qualified; lower thermal robustness	Select when board space is tighter than 2.5 mm × 1.3 mm and automotive qualification is unnecessary
SMBJ15A (Littelfuse)	Higher P_tot (600 W peak, 1 W avg); DO-214AA package; V_C = 24.4 V at 24.7 A	Designed for bulk transient suppression, not precision regulation; larger footprint (4.5 mm × 3.9 mm)	Select when primary need is high-energy surge clamping rather than stable DC reference voltage

Compared with BZX384-B15,115 and SMBJ15A, the PLZ15A-G3/H uniquely balances precision regulation (tight V_Z tolerance, low Z_Z), automotive-grade reliability (AEC-Q101), and compact size - making it optimal for dual-role applications where both reference stability and transient resilience are required in constrained layouts.

Availability

PLZ15A-G3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply feedback loops, USB-C port protection, and medical diagnostic equipment reference circuits requiring stable component supply, consistent AEC-Q101 compliance, and traceable green sourcing.

Supply support for PLZ15A-G3/H 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

Vishay Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.

The PLZ Series belongs to Vishay's eSMP® family of ultra-small surface-mount Zener diodes, engineered specifically for space-constrained, high-reliability applications demanding AEC-Q101 qualification, low leakage, and robust surge immunity.

FAQ

What is the exact zener voltage range for PLZ15A-G3/H at 10 mA test current?

The PLZ15A-G3/H has a guaranteed zener voltage range of 13.44 V minimum to 14.13 V maximum when tested at I_ZT = 10 mA and T_amb = 25 °C. This tight tolerance supports accurate voltage referencing in feedback networks and precision clamping applications where deviation beyond ±3% is unacceptable. The PLZ15A-G3/H achieves this via tightly controlled diffusion and trimming processes inherent to Vishay's PLZ Series fabrication.

Is PLZ15A-G3/H qualified to AEC-Q101, and what does the "/H" suffix indicate?

Yes, the "/H" suffix in PLZ15A-G3/H explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. This means the PLZ15A-G3/H has undergone full stress testing including HTGB, HTRB, temperature cycling, and ESD per AEC-Q101 Rev D, confirming suitability for automotive under-hood and cabin applications. The PLZ15A-G3/H is not just RoHS-compliant and green - it is certified for mission-critical automotive use.

What is the maximum peak pulse current PLZ15A-G3/H can handle, and under what waveform conditions?

The PLZ15A-G3/H is rated for 16 A peak pulse current (I_PPM) under an 8/20 μs current waveform per IEC 61000-4-5. This rating applies specifically to the PLZ15A variant group (including PLZ15A-G3/H) and reflects its ability to absorb transient energy without parametric shift or failure. The PLZ15A-G3/H maintains clamping voltage ≤4.93 V during this event, protecting downstream ICs from overvoltage damage.

How does the thermal resistance of PLZ15A-G3/H impact its power derating in real PCB layouts?

The PLZ15A-G3/H has a typical junction-to-ambient thermal resistance (R_thJA) of 130 K/W when mounted on a standard FR4 board (50 mm × 50 mm × 1.6 mm, 10 mm × 10 mm solder land). This means its usable power dissipation drops linearly from 960 mW at 25 °C ambient to 500 mW at 85 °C ambient - a critical factor when designing thermally dense automotive modules. Derating curves in Figure 3 of the PLZ15A-G3/H datasheet must be consulted for non-standard layouts.

Can PLZ15A-G3/H replace older DO-35 or SOD-123 Zener diodes in existing designs?

The PLZ15A-G3/H is not a direct drop-in replacement for DO-35 or SOD-123 Zeners due to its MicroSMF (DO-219AC) footprint - which measures 2.5 mm × 1.3 mm versus 3.8 mm × 1.7 mm for SOD-123 and 4.2 mm × 2.2 mm for DO-35. However, its superior surge rating (16 A vs. typically ≤5 A), lower dynamic resistance (≤11 Ω vs. ≥30 Ω), and AEC-Q101 qualification make it a compelling upgrade where board redesign is feasible. The PLZ15A-G3/H requires updated stencil and placement files.

PLZ15A-G3/H Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: PLZ

Package/Case:: DO-219AC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 15 V

Tolerance:: ±3%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 16 Ohms

Current - Reverse Leakage @ Vr:: 200 nA @ 11 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-219AC (microSMF)

PLZ15A-G3/H FAQ

1.How can I place an order for PLZ15A-G3/H through Aetrix?

Please submit a Request for Quotation (RFQ) for PLZ15A-G3/H 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 PLZ15A-G3/H reliable?

The price and inventory of PLZ15A-G3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PLZ15A-G3/H is usually 5 days.

3.What payment methods are accepted for PLZ15A-G3/H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PLZ15A-G3/H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PLZ15A-G3/H?

PLZ15A-G3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PLZ15A-G3/H 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 PLZ15A-G3/H?

For technical support, including PLZ15A-G3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PLZ15A-G3/H requirements.

6.How does Aetrix verify that PLZ15A-G3/H is sourced from the original manufacturer or authorized distributors?

All PLZ15A-G3/H 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 PLZ15A-G3/H meets industry standards.

7.What is the process for return or replacement of PLZ15A-G3/H?

All PLZ15A-G3/H units undergo pre-shipment inspection (PSI). If there is an issue with PLZ15A-G3/H, 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 PLZ15A-G3/H part is unused and in its original packaging.

Return procedure for PLZ15A-G3/H:

1.Submit a request within 90 days.

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

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