PLZ4V7B-HG3/H Vishay Zener Diode (Small Outline Diode Flat Lead) In Stock
Vishay PLZ4V7B-HG3/H is a 4.7 V single silicon Zener diode in a compact SMF (DO-219AC) surface mount flat-lead package for voltage regulation and clamping. Features tight 2% voltage tolerance, low leakage current, and RoHS-compliant halogen-free construction. Available for worldwide distribution with consistent lead times.
- Manufacturer
- Vishay
- Package
- Small Outline Diode Flat Lead
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- PLZ4V7B-HG3/H Datasheet PDF
- Category
- Zener Diode
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4.7 V Zener voltage with tight ±2% tolerance for precise voltage reference and clamping circuit design
- DO-219AC (SMF) flat-lead package offers minimal footprint for dense PCB layouts in portable electronics
- Low reverse leakage current for minimal power dissipation in voltage monitoring and protection circuits
- RoHS-compliant halogen-free (HG3) construction meets modern environmental and safety standards
- Silicon Zener diode with sharp breakdown characteristics for reliable voltage regulation from 0°C to 150°C junction temperature
Applications
PLZ4V7B-HG3/H is used in low-voltage regulation, over-voltage protection, and reference voltage generation circuits in consumer electronics, IoT devices, and industrial control systems. Its 4.7 V Zener voltage makes it suitable for clamping CMOS logic inputs and protecting microcontroller GPIO pins against transient voltage spikes up to the breakdown threshold. The compact SMF package is ideal for space-constrained PCB designs requiring accurate voltage limiting alongside surface mount components.
Specifications
| Date Of Intro | 2017-03-21 |
| YTEOL | 0 |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | ZENER DIODE |
| JEDEC-95 Code | DO-219AC |
| JESD-30 Code | R-PDSO-F2 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | UNIDIRECTIONAL |
| Power Dissipation-Max | 0.96W |
| Reference Standard | AEC-Q101; IEC-61000-4-2, 4-5 |
| Reference Voltage-Nom | 4.7V |
| Surface Mount | YES |
| Technology | ZENER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | FLAT |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tol-Max | 2.67% |
| Working Test Current | 20mA |
| Package | Small Outline Diode Flat Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PLZ4V7B-HG3/H:
suggested
Frequently Asked Questions
What Zener voltage and tolerance does the PLZ4V7B-HG3/H provide for voltage regulation designs?
The PLZ4V7B-HG3/H has a nominal Zener voltage of 4.7 V with a ±2% tolerance, corresponding to a voltage range of approximately 4.61 V to 4.79 V at the test current. This tight regulation makes it suitable for precision voltage reference and clamping circuits in analog and mixed-signal designs where the regulated voltage must remain within ±94 mV of the 4.7 V setpoint.
How does the PLZ4V7B-HG3/H's SMF (DO-219AC) package benefit compact PCB layouts?
The DO-219AC (SMF) flat-lead package measures approximately 2.6 mm x 1.6 mm with a height of 1.1 mm, providing one of the smallest footprints available for discrete Zener diodes. Compared to SOD-123 packages of similar power ratings, the SMF flat-lead design reduces solder pad height, enabling placement on densely populated boards in wearables, mobile accessories, and miniaturized industrial sensors where vertical clearance is below 2 mm.
In which overvoltage protection scenarios is PLZ4V7B-HG3/H an effective solution?
PLZ4V7B-HG3/H is effective for clamping GPIO and signal input pins on 3.3 V and 5 V CMOS microcontrollers to prevent damage from transient spikes exceeding 4.7 V. Placed in shunt configuration between the signal line and ground, it limits the pin voltage to within the Zener breakdown range during ESD or inductive switching transients, protecting inputs rated at 5.5 V maximum in circuits powered from 3.3 V to 5 V supply rails.
What does the HG3 suffix on PLZ4V7B-HG3/H indicate about compliance and material restrictions?
The HG3 suffix designates a halogen-free, RoHS-compliant product formulation per Vishay's environmental marking system. This means the epoxy encapsulant and internal materials do not contain restricted halogens (chlorine below 900 ppm, bromine below 900 ppm) in accordance with IEC 61249-2-21, qualifying the PLZ4V7B-HG3/H for use in consumer electronics and industrial products subject to EU RoHS and REACH directives requiring halogen-free construction.
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