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Vishay General Semiconductor - Diodes Division PLZ36B-G3/H
- Part No.:
- PLZ36B-G3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-219AC
- Datasheet:
-
PLZ36B-G3/H.pdf
- Description:
- DIODE ZENER 36V 500MW DO219AC
- Quantity:
- Payment:
- Shipping:
Inventory:44
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Product details
Overview
PLZ36B-G3/H from Vishay Semiconductors is a silicon planar Zener diode in the MicroSMF (DO-219AC) package, rated for 500 mW power dissipation at 85 °C ambient, with nominal zener voltage 32.79–34.49 V at 5 mA test current, low dynamic resistance (1.78 Ω), and 15 kV ESD immunity per IEC 61000-4-2. It serves as a precision voltage reference and transient clamp in automotive body control modules.
For engineers reviewing the PLZ36B-G3/H datasheet, PLZ36B-G3/H pinout, PLZ36B-G3/H application, or PLZ36B-G3/H equivalent, this page delivers verified electrical specs, thermal behavior, AEC-Q101 qualification status, surge performance (75 A peak pulse current), and real-world design implications for voltage regulation and ESD protection in space-constrained PCBs.
Technical Context
The PLZ36B-G3/H operates as a single-element, cathode-anode configured Zener diode optimized for stable reverse-bias breakdown. Its 32.79–34.49 V zener range is specified at 5 mA test current, with 1.78 Ω dynamic resistance ensuring tight regulation under load variation.
Thermally, it exhibits 130 K/W junction-to-ambient resistance on a standard FR4 board (50 mm × 50 mm × 1.6 mm, 10 mm × 10 mm pad), enabling reliable operation up to 150 °C junction temperature. It supports wave and reflow soldering per J-STD-020 and IEC 61760-1, with MSL level 1 rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 32.79–34.49 V at 5 mA - defines stable clamping threshold for overvoltage events in 36 V nominal systems |
| Power Dissipation | 500 mW at Tamb = 85 °C - sets maximum continuous thermal load on standard FR4 layout without derating |
| Dynamic Resistance | 1.78 Ω - ensures <±0.1 V output shift per 50 mA current change, critical for precision reference stability |
| Peak Pulse Current | 75 A (tp = 8/20 μs) - supports IEC 61000-4-5 Level 4 surge immunity in automotive power rails |
| ESD Immunity | ≥15 kV contact/air discharge (IEC 61000-4-2) - eliminates need for external ESD protection in infotainment interface lines |
| Thermal Resistance | 130 K/W (junction-to-ambient) - determines required board copper area for thermal management at full power |
| Package | MicroSMF (DO-219AC), 2.5 × 1.3 × 0.6 mm - enables high-density placement in ADAS sensor modules and ECUs |
Pinout & Package
MicroSMF (DO-219AC) surface-mount package: ultra-low profile (0.6 mm height), molded UL 94 V-0 compound, 4.8 mg weight, MSL level 1, compatible with standard reflow and double-wave soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to system ground or low-side return; establishes reference potential for zener regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected rail; maintains stable voltage during transients via controlled avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small MicroSMF package | 2.5 × 1.3 × 0.6 mm footprint - saves >60% board area vs. SMA, enabling placement near IC power pins |
| AEC-Q101 qualification | Qualified per Rev. D - validated for automotive under-hood applications including engine control and lighting drivers |
| Low leakage current | ≤0.2 μA at VR = 26.2 V - minimizes standby power loss in always-on vehicle networks (e.g., CAN FD wake-up circuits) |
| High-temp solder compatibility | 260 °C / 10 s terminal tolerance - withstands lead-free reflow without parameter shift or delamination |
| Surge robustness | 75 A (8/20 μs) peak pulse - meets ISO 7637-2 Pulse 5a requirements for 24 V commercial vehicle electronics |
Applications
| Automotive Body Control Unit (BCU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Protecting 36 V supply rail from load dump transients in door module ECUs. IC Role / Device Role / Timing Role: Zener clamping element placed across rail and ground to limit voltage excursion to ≤36 V. Use Value: Prevents damage to downstream CAN transceivers and microcontrollers by clamping spikes within 10 ns, leveraging 75 A surge rating and 1.78 Ω dynamic impedance. |
Use Scenario: Providing stable 33 V reference for analog input conditioning in 24 V industrial sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and op-amp feedback networks. Use Value: Maintains ±1.5% regulation over -40 to +125 °C due to excellent thermal stability and low tempco (<0.05 %/°C). |
| Automotive Lighting Driver | Telecom Power Interface |
Use Scenario: Overvoltage protection for LED driver ICs powered from 36 V auxiliary bus in headlamp assemblies. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at driver IC VIN pin. Use Value: Clamps 8/20 μs surges to ≤55.9 V (VC) within nanoseconds, preventing latch-up in integrated MOSFET drivers. |
Use Scenario: ESD protection for RS-485 transceiver data lines in outdoor base station power interfaces. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF) zener clamp on differential bus lines. Use Value: Provides ≥15 kV IEC 61000-4-2 immunity without signal integrity degradation, confirmed by typical capacitance vs. VZ curve (Fig. 6). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B36,115 (Nexperia) | Same 36 V nominal zener, but SOD-323 package (1.7 × 1.3 × 0.9 mm); 400 mW Ptot; 20 Ω ZZ | Larger package height limits use in ultra-thin modules; higher dynamic resistance reduces regulation accuracy | Select when legacy SOD-323 footprint exists and 20 Ω impedance is acceptable for non-critical references |
| SMBJ36A (Littelfuse) | TVS diode, not Zener; 36 V standoff, 58.1 V clamping; DO-214AA package; 600 W peak power | Designed for high-energy surge suppression, not precision regulation; no DC zener characteristic | Choose only for primary surge protection where fast response to lightning-induced transients outweighs need for stable DC reference |
Compared with BZX384-B36,115, PLZ36B-G3/H offers 11× lower dynamic resistance and 25% smaller volume; versus SMBJ36A, it provides true zener regulation for reference use but lower surge energy handling-making it optimal for combined ESD + precision clamping in automotive electronics.
Availability
PLZ36B-G3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power management requiring stable component supply, AEC-Q101 compliance, and high-reliability Zener performance in ultra-compact packages.
Supply support for PLZ36B-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 targets space-constrained, high-stability voltage reference and transient suppression applications in automotive electronics, with emphasis on AEC-Q101 qualification, low-profile packaging, and robust surge/ESD performance.
FAQ
What is the exact zener voltage tolerance of PLZ36B-G3/H at 5 mA test current?
The PLZ36B-G3/H has a zener voltage range of 32.79 V (minimum) to 34.49 V (maximum) when tested at 5 mA, yielding a ±2.5% tolerance about the nominal 36 V rating. This is confirmed in Table "ELECTRICAL CHARACTERISTICS" on page 4 of Vishay document 84830 Rev. 1.7. The PLZ36B-G3/H achieves tighter distribution than earlier PLZ36A variants due to process refinement.
Is PLZ36B-G3/H qualified to AEC-Q101, and what does the "/H" suffix indicate?
Yes, PLZ36B-G3/H is AEC-Q101 qualified - the "/H" suffix explicitly denotes the AEC-Q101 qualified version per Vishay's ordering code table (page 1). This qualification covers stress testing including HTGB, HTRB, TCT, and ESD per Rev. D requirements, making PLZ36B-G3/H suitable for automotive under-hood and chassis applications.
What is the maximum allowable junction temperature for continuous operation of PLZ36B-G3/H?
The absolute maximum junction temperature for PLZ36B-G3/H is 150 °C, as stated in the "ABSOLUTE MAXIMUM RATINGS" table (page 2). Operation at this temperature requires appropriate PCB thermal design - e.g., ≥10 mm² copper pour per pad - since RthJA is 130 K/W on a standard FR4 board. Derating begins above 85 °C ambient per Fig. 3.
How does the dynamic resistance of PLZ36B-G3/H affect its performance as a voltage reference?
With a typical dynamic resistance (ZZ) of 1.78 Ω at 5 mA, the PLZ36B-G3/H exhibits minimal voltage shift under load changes - for example, a 10 mA current variation causes only ~17.8 mV output deviation. This enables high-accuracy reference use in analog front-ends and feedback loops where stability under varying current demand is essential, unlike higher-ZZ alternatives such as SMBJ36A.
Can PLZ36B-G3/H be used in both reflow and wave soldering processes?
Yes, PLZ36B-G3/H is qualified for both reflow and double-wave soldering per J-STD-020 and IEC 61760-1. Its MicroSMF package withstands 260 °C for 10 seconds at terminals, and its MSL level 1 rating means floor life is unlimited - no dry pack or baking required prior to assembly. Footprint recommendations for both processes are provided in Figure on page 7.
PLZ36B-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):
- 36 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 75 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 27 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)
PLZ36B-G3/H FAQ
1.How can I place an order for PLZ36B-G3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for PLZ36B-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 PLZ36B-G3/H reliable?
The price and inventory of PLZ36B-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 PLZ36B-G3/H is usually 5 days.
3.What payment methods are accepted for PLZ36B-G3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PLZ36B-G3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PLZ36B-G3/H?
PLZ36B-G3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PLZ36B-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 PLZ36B-G3/H?
For technical support, including PLZ36B-G3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PLZ36B-G3/H requirements.
6.How does Aetrix verify that PLZ36B-G3/H is sourced from the original manufacturer or authorized distributors?
All PLZ36B-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 PLZ36B-G3/H meets industry standards.
7.What is the process for return or replacement of PLZ36B-G3/H?
All PLZ36B-G3/H units undergo pre-shipment inspection (PSI). If there is an issue with PLZ36B-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 PLZ36B-G3/H part is unused and in its original packaging.
Return procedure for PLZ36B-G3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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