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Vishay General Semiconductor - Diodes Division PLZ30A-HG3_A/H
- Part No.:
- PLZ30A-HG3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-219AC
- Datasheet:
-
PLZ30A-HG3_A/H.pdf
- Description:
- DIODE ZENER 30V 500MW DO219AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,453
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Product details
Overview
PLZ30A-HG3_A/H from Vishay Semiconductors is a silicon planar Zener diode in the AEC-Q101-qualified MicroSMF (DO-219AC) package, rated for 500 mW power dissipation at 85 °C ambient, with nominal zener voltage 26.99–28.39 V at 5 mA test current, low dynamic resistance (23 Ω), and ESD immunity ≥30 kV per IEC 61000-4-2 - used for precision voltage regulation and transient overvoltage protection in automotive power rails.
For engineers reviewing the PLZ30A-HG3_A/H datasheet, PLZ30A-HG3_A/H pinout, PLZ30A-HG3_A/H application, or PLZ30A-HG3_A/H equivalent, this page delivers verified electrical specs, thermal behavior, surge performance (43.7 A peak pulse current, 2.28 V clamping), package dimensions, and direct alternatives for automotive-grade voltage reference and clamp design.
Technical Context
The PLZ30A-HG3_A/H operates as a single-element, unidirectional Zener diode optimized for stable voltage reference and transient suppression in harsh environments. Its 26.99–28.39 V zener range is specified at 5 mA test current, with reverse leakage ≤0.2 μA at rated VR and dynamic resistance of 23 Ω - enabling tight regulation under low-current bias conditions.
It meets AEC-Q101 qualification, supports wave and reflow soldering (260 °C / 10 s), and delivers 43.7 A peak pulse current (tp = 8/20 μs, IEC 61000-4-5) with 2.28 V clamping voltage - confirming suitability for ISO 7637-2/3-compliant automotive load-dump and surge protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 26.99–28.39 V at IZT = 5 mA - defines precise regulation window for 24 V system references |
| Power Dissipation | 500 mW at Tamb = 85 °C on FR4 (10 mm × 10 mm pad) - sets thermal derating limit for sustained operation |
| Dynamic Resistance | 23 Ω at IZT = 5 mA - ensures minimal output voltage shift under load current variation |
| Peak Pulse Current | 43.7 A (tp = 8/20 μs, IEC 61000-4-5) - validates capability to absorb automotive transients without failure |
| Reverse Clamping Voltage | 2.28 V at IPPM = 43.7 A - guarantees low-voltage clamping during surge events to protect downstream ICs |
| ESD Immunity | ≥30 kV contact/air discharge (IEC 61000-4-2) - confirms robustness against human-body-model ESD in assembly and field use |
| Junction Temperature | 150 °C maximum - enables reliable operation in under-hood automotive environments |
Pinout & Package
MicroSMF (DO-219AC) package: ultra-low-profile surface-mount case (2.5 ± 0.1 mm length × 1.3 ± 0.1 mm width × 0.6 ± 0.1 mm height), cathode marked by bar, MSL level 1, UL 94 V-0 molding compound, 4.8 mg weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current up to 100 mA |
| Cathode | Zener breakdown terminal | Marked by bar; connected to higher-potential rail; maintains regulated voltage across load when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress-test requirements - enables use in engine control, body electronics, and ADAS modules |
| Low-profile MicroSMF package | 0.6 mm max height enables high-density PCB layouts and compatibility with automated optical inspection (AOI) |
| High-temperature soldering tolerance | Withstands 260 °C / 10 s at terminals - supports lead-free reflow and double-wave processes without degradation |
| Excellent long-term stability | Guaranteed parameter drift <±2% over life - critical for calibration-critical voltage references in safety systems |
| Surge-rated construction | Rated for 70 W non-repetitive peak surge (PLZ2V7A–PLZ4V7C group) - provides margin beyond typical 24 V system surges |
Applications
| Automotive Power Rail Protection | Industrial Sensor Reference |
|---|---|
Use Scenario: Protecting 24 V supply lines in vehicle ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Zener clamp placed across input rail to shunt transient energy before it reaches DC/DC converters and microcontrollers. Use Value: 43.7 A peak pulse current and 2.28 V clamping voltage limit rail overshoot to safe levels, preserving downstream IC reliability. |
Use Scenario: Providing stable 27 V reference for analog front-ends in industrial pressure and temperature sensors. IC Role / Device Role / Timing Role: Precision Zener element supplying bias voltage to op-amp gain stages and ADC reference buffers. Use Value: 23 Ω dynamic resistance and <0.2 μA leakage ensure minimal reference drift and signal path error under varying load conditions. |
| LED Driver Overvoltage Clamp | Programmable Logic Supply Stabilization |
Use Scenario: Safeguarding constant-current LED drivers in commercial lighting against mains-induced surges. IC Role / Device Role / Timing Role: Reverse-biased Zener connected between driver output and ground to clamp fault voltages. Use Value: 500 mW power rating at 85 °C allows continuous dissipation of repetitive transients without thermal runaway. |
Use Scenario: Stabilizing auxiliary 27 V supply for FPGA configuration circuitry in programmable logic systems. IC Role / Device Role / Timing Role: Voltage reference element maintaining clean bias for configuration EEPROM and JTAG interface. Use Value: AEC-Q101 qualification and 150 °C junction rating support extended lifetime in thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C30LT1G | 30 V nominal zener (±5%), SOT-23 package, 350 mW Ptot, 40 Ω ZZ, no AEC-Q101 qualification | Lower power rating and no automotive qualification - suitable for consumer-grade 24 V systems only | Select when cost sensitivity outweighs automotive compliance and thermal margin requirements |
| SMBJ30A | 30 V standoff voltage TVS diode, DO-214AA package, 600 W peak power, 48.4 V clamping, unidirectional | Higher clamping voltage and surge capacity - intended for primary-level surge suppression, not precision regulation | Select when primary function is high-energy transient absorption rather than stable voltage reference |
Compared with BZX84-C30LT1G, PLZ30A-HG3_A/H offers tighter voltage tolerance, lower dynamic resistance, and AEC-Q101 qualification; compared with SMBJ30A, it provides superior regulation accuracy and lower clamping voltage but lower surge energy handling - making PLZ30A-HG3_A/H optimal for secondary-stage regulation and clamp functions in automotive electronics.
Availability
PLZ30A-HG3_A/H is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and LED driver protection requiring stable component supply with full traceability and AEC-Q101 compliance.
Supply support for PLZ30A-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, designed specifically to meet stringent AEC-Q101 requirements while delivering low-profile packaging and high surge robustness for next-generation vehicle electronics.
FAQ
What is the zener voltage tolerance of PLZ30A-HG3_A/H?
The PLZ30A-HG3_A/H has a zener voltage range of 26.99 V to 28.39 V at 5 mA test current, corresponding to a ±2.5% tolerance about the nominal 27.7 V midpoint. This specification is guaranteed per the Vishay PLZ Series datasheet Rev. 1.7 and applies under standard test conditions (Tamb = 25 °C). The PLZ30A-HG3_A/H achieves this tight tolerance via process-controlled silicon planar junction fabrication.
Is PLZ30A-HG3_A/H qualified for automotive applications?
Yes, PLZ30A-HG3_A/H is AEC-Q101 qualified - confirmed by its "HG3" suffix per Vishay's ordering nomenclature and explicitly stated in the "FEATURES" section of the PLZ Series datasheet. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating its use in engine control units, body control modules, and ADAS subsystems where reliability under thermal and vibration stress is mandatory. The PLZ30A-HG3_A/H meets all applicable AEC-Q101 requirements per Rev. 1.7.
What is the maximum clamping voltage of PLZ30A-HG3_A/H during surge events?
The PLZ30A-HG3_A/H exhibits a reverse clamping voltage (VC) of 2.28 V at its peak pulse current (IPPM) of 43.7 A, tested per IEC 61000-4-5 with an 8/20 μs waveform. This low clamping voltage ensures effective protection of downstream components during transient events. The value is measured under standardized surge conditions and is documented in the Electrical Characteristics table on page 4 of the PLZ Series datasheet (Document Number: 84830, Rev. 1.7).
Can PLZ30A-HG3_A/H be used in reflow soldering processes?
Yes, PLZ30A-HG3_A/H is fully compatible with lead-free reflow soldering per J-STD-020, with a maximum terminal temperature of 260 °C for 10 seconds. Its MicroSMF (DO-219AC) package uses UL 94 V-0 molding compound and is rated MSL level 1, meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. This makes the PLZ30A-HG3_A/H suitable for high-volume SMT production lines using standard reflow profiles.
What is the thermal resistance junction-to-ambient for PLZ30A-HG3_A/H?
The typical thermal resistance junction-to-ambient (RthJA) for PLZ30A-HG3_A/H is 130 K/W when mounted on a standard FR4 board (50 mm × 50 mm × 1.6 mm) with a 10 mm × 10 mm copper pad. This value is specified in the Thermal Characteristics table of the PLZ Series datasheet and directly informs thermal design - for example, at 500 mW dissipation and 85 °C ambient, junction temperature rises to approximately 150 °C (85 + 0.5 × 130), matching the absolute maximum TJ rating.
PLZ30A-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):
- 30 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 23 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AC (microSMF)
PLZ30A-HG3_A/H FAQ
1.How can I place an order for PLZ30A-HG3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for PLZ30A-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 PLZ30A-HG3_A/H reliable?
The price and inventory of PLZ30A-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 PLZ30A-HG3_A/H is usually 5 days.
3.What payment methods are accepted for PLZ30A-HG3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PLZ30A-HG3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PLZ30A-HG3_A/H?
PLZ30A-HG3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PLZ30A-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 PLZ30A-HG3_A/H?
For technical support, including PLZ30A-HG3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PLZ30A-HG3_A/H requirements.
6.How does Aetrix verify that PLZ30A-HG3_A/H is sourced from the original manufacturer or authorized distributors?
All PLZ30A-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 PLZ30A-HG3_A/H meets industry standards.
7.What is the process for return or replacement of PLZ30A-HG3_A/H?
All PLZ30A-HG3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with PLZ30A-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 PLZ30A-HG3_A/H part is unused and in its original packaging.
Return procedure for PLZ30A-HG3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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