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Vishay General Semiconductor - Diodes Division PLZ4V3A-HG3_A/H
- Part No.:
- PLZ4V3A-HG3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-219AC
- Datasheet:
-
PLZ4V3A-HG3_A/H.pdf
- Description:
- DIODE ZENER 4.17V 960MW DO219AC
- Quantity:
- Payment:
- Shipping:
Inventory:9
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Product details
Overview
PLZ4V3A-HG3_A/H from Vishay Semiconductors is an AEC-Q101 qualified silicon planar Zener diode in the ultra-small MicroSMF (DO-219AC) package, delivering 4.04 V to 4.29 V nominal zener voltage at 20 mA test current, 5 μA maximum reverse leakage at rated VR, and 1.0 Ω typical dynamic resistance-designed for precision voltage regulation and ESD protection in automotive power rails and sensor interfaces.
For engineers reviewing the PLZ4V3A-HG3_A/H datasheet, PLZ4V3A-HG3_A/H pinout, PLZ4V3A-HG3_A/H application, or PLZ4V3A-HG3_A/H equivalent, this page provides verified electrical specs, thermal performance data, AEC-Q101 qualification status, surge capability (70 W, 8/20 μs), and real-world use cases in automotive ECUs and industrial I/O modules.
Technical Context
The PLZ4V3A-HG3_A/H operates as a single-element, cathode-anode configured Zener diode optimized for stable voltage reference and transient suppression. Its design integrates low-profile MicroSMF packaging with 130 K/W junction-to-ambient thermal resistance on FR4 and 40 K/W junction-to-lead resistance, enabling reliable operation up to 150 °C junction temperature.
It supports wave and reflow soldering per J-STD-020 and IEC 61760-1, features 260 °C / 10 s terminal soldering tolerance, and achieves ≥30 kV ESD immunity per IEC 61000-4-2-making it suitable for high-reliability automotive subsystems where space, thermal margin, and robustness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.04 V to 4.29 V at IZT = 20 mA - defines precise clamping threshold for 5 V rail stabilization |
| Dynamic Resistance (ZZ) | 1.0 Ω typical at IZT = 20 mA - ensures minimal voltage deviation under load transients |
| Reverse Leakage (IR) | ≤5 μA at rated VR - guarantees low standby power loss in always-on automotive circuits |
| Peak Pulse Power (PZSM) | 70 W (8/20 μs, IEC 61000-4-5) - sustains high-energy surges without failure in CAN/LIN bus nodes |
| ESD Immunity | ≥30 kV per IEC 61000-4-2 (contact/air) - protects downstream analog front-ends from human-body-model discharges |
| Thermal Resistance (RthJA) | 130 K/W on FR4 (50 mm × 50 mm × 1.6 mm, 10 mm × 10 mm pad) - enables thermal-aware PCB layout for continuous 500 mW operation at 85 °C ambient |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard |
Pinout & Package
MicroSMF (DO-219AC) surface-mount package: 2.5 mm × 1.3 mm × 0.6 mm body, 4.4 mm overall length, cathode bar marking, MSL level 1, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during forward bias; reference node during reverse breakdown | Connected to ground or low-impedance return path to establish stable reference potential |
| Cathode | Current source during reverse breakdown; voltage clamp node | Connected to protected line (e.g., 5 V supply rail) to shunt overvoltage transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Ultra-low profile MicroSMF package | 0.6 mm height enables placement under connectors or in tight board spaces without mechanical interference |
| 70 W surge capability (8/20 μs) | Withstands repetitive load-dump and ISO 7637-2 pulse 5a events in 12 V systems |
| ≥30 kV ESD immunity | Eliminates need for external ESD diodes in exposed I/O lines such as LIN transceivers or sensor inputs |
| 130 K/W RthJA on standard FR4 | Allows full 500 mW power dissipation at 85 °C ambient without heatsinking or derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting 5 V microcontroller supply rails in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Zener clamping element providing fast-response overvoltage suppression at the LDO input stage. Use Value: Maintains regulated 5 V output by clamping transients above 4.3 V, preventing brownout resets and latch-up in safety-critical ECUs. |
Use Scenario: Stabilizing reference voltage for 16-bit ADCs measuring thermocouple or strain gauge outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source with low dynamic impedance ensuring ADC full-scale accuracy. Use Value: Delivers <1.0 Ω ZZ and ≤5 μA IR, reducing measurement drift and improving effective resolution by >2 LSB across temperature. |
| Automotive LIN Bus Transceiver Protection | Consumer IoT Battery Monitoring |
|
Use Scenario: ESD and surge protection for LIN physical layer transceivers in door module and seat control units. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed between LIN bus line and transceiver I/O pin. Use Value: Withstands ≥30 kV contact ESD and 70 W 8/20 μs surges while maintaining signal integrity below 1 nF capacitance. |
Use Scenario: Overvoltage clamp for lithium-ion battery voltage sensing in smart home energy monitors. IC Role / Device Role / Timing Role: Zener-based fault detector triggering MCU shutdown when cell voltage exceeds safe threshold. Use Value: Enables accurate 4.2 V ±0.05 V detection window using 4.04–4.29 V VZ range, minimizing false trips during charge termination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B4V3,115 (Nexperia) | Same 4.3 V nominal VZ, but SOD-323 package (1.7 mm × 1.3 mm), higher RthJA (370 K/W), no AEC-Q101 qualification | Suitable for consumer-grade portable devices; not approved for automotive under-hood use | Select when cost and footprint are prioritized over automotive qualification and thermal performance |
| MMSZ4V3ET1G (onsemi) | 4.3 V VZ, SOD-123 package (3.7 mm × 1.6 mm), 500 mW rating, AEC-Q101 qualified, but 200 K/W RthJA | Acceptable for cabin electronics with lower ambient temperatures; less robust in high-temp ECU locations | Choose when legacy SOD-123 footprint compatibility is required and thermal margin allows 200 K/W derating |
Compared with BZX384-B4V3,115 and MMSZ4V3ET1G, the PLZ4V3A-HG3_A/H offers superior thermal performance (130 K/W), smallest footprint among AEC-Q101 options, and highest surge rating (70 W), making it optimal for space-constrained, high-temperature automotive power domains.
Availability
PLZ4V3A-HG3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and consumer IoT battery management systems requiring stable component supply with AEC-Q101 assurance and long-term production continuity.
Supply support for PLZ4V3A-HG3_A/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 targets automotive-grade Zener regulation and transient suppression, engineered specifically to meet stringent AEC-Q101 requirements while minimizing PCB area and thermal overhead in next-generation vehicle electronics.
FAQ
What is the exact zener voltage tolerance of PLZ4V3A-HG3_A/H at 20 mA test current?
The PLZ4V3A-HG3_A/H has a guaranteed zener voltage range of 4.04 V minimum to 4.29 V maximum at IZT = 20 mA, as specified in the Vishay PLZ Series datasheet (Document Number: 84830, Rev. 1.7). This 6.2% tolerance band ensures predictable clamping behavior in 5 V system designs without requiring post-manufacturing binning.
Is PLZ4V3A-HG3_A/H compatible with lead-free reflow soldering processes?
Yes, PLZ4V3A-HG3_A/H is fully compatible with lead-free reflow soldering per J-STD-020, supporting peak temperatures up to 260 °C for 10 seconds at terminals. Its MicroSMF package and UL 94 V-0 molding compound are qualified for double-wave and reflow assembly, with MSL level 1 handling requirements.
Does PLZ4V3A-HG3_A/H meet AEC-Q101 requirements for automotive under-hood applications?
Yes, the "HG3" suffix in PLZ4V3A-HG3_A/H explicitly denotes AEC-Q101 qualification. The device passes all required stress tests-including temperature cycling, high-temperature reverse bias (HTRB), and ESD per IEC 61000-4-2-making it suitable for under-hood environments with ambient temperatures up to 125 °C and junction temperatures up to 150 °C.
What is the maximum surge power rating for PLZ4V3A-HG3_A/H, and under what waveform conditions?
The PLZ4V3A-HG3_A/H is rated for 70 W non-repetitive peak surge power dissipation under an 8/20 μs current waveform per IEC 61000-4-5. This applies specifically to PLZ2V7A through PLZ4V7C variants, confirming its suitability for protecting LIN and low-speed CAN nodes against induced transients.
How does the thermal resistance of PLZ4V3A-HG3_A/H compare to standard SOD-123 Zeners?
PLZ4V3A-HG3_A/H achieves 130 K/W junction-to-ambient thermal resistance on a standard FR4 board (50 mm × 50 mm × 1.6 mm, 10 mm × 10 mm pad), significantly lower than typical SOD-123 Zeners (~200–370 K/W). This enables full 500 mW power dissipation at 85 °C ambient without derating-critical for dense automotive PCB layouts.
PLZ4V3A-HG3_A/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):
- 4.17 V
- Tolerance:
- ±3%
- Power - Max:
- 960 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AC (microSMF)
PLZ4V3A-HG3_A/H FAQ
1.How can I place an order for PLZ4V3A-HG3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for PLZ4V3A-HG3_A/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 PLZ4V3A-HG3_A/H reliable?
The price and inventory of PLZ4V3A-HG3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PLZ4V3A-HG3_A/H is usually 5 days.
3.What payment methods are accepted for PLZ4V3A-HG3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PLZ4V3A-HG3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PLZ4V3A-HG3_A/H?
PLZ4V3A-HG3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PLZ4V3A-HG3_A/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 PLZ4V3A-HG3_A/H?
For technical support, including PLZ4V3A-HG3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PLZ4V3A-HG3_A/H requirements.
6.How does Aetrix verify that PLZ4V3A-HG3_A/H is sourced from the original manufacturer or authorized distributors?
All PLZ4V3A-HG3_A/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 PLZ4V3A-HG3_A/H meets industry standards.
7.What is the process for return or replacement of PLZ4V3A-HG3_A/H?
All PLZ4V3A-HG3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with PLZ4V3A-HG3_A/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 PLZ4V3A-HG3_A/H part is unused and in its original packaging.
Return procedure for PLZ4V3A-HG3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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