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Nexperia USA Inc. PDZ5.1BZ
- Part No.:
- PDZ5.1BZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ5.1BZ.pdf
- Description:
- DIODE ZENER 5.1V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:26,227
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Product details
Overview
PDZ5.1BZ from Nexperia is a single low-power Zener diode designed for precision voltage regulation in space-constrained SMD applications, featuring a nominal Zener voltage of 5.1 V (4.96–5.20 V at IZ = 5 mA), dynamic impedance of 250 Ω at IZ = 0.5 mA, leakage current ≤2 µA at VR = 1.5 V, and total power dissipation up to 400 mW on FR4 PCB.
For engineers reviewing the PDZ5.1BZ datasheet, PDZ5.1BZ pinout, PDZ5.1BZ application, or PDZ5.1BZ equivalent, this device is selected for low-current reference stabilization, ESD-protected bias networks, and compact voltage clamp circuits where tight tolerance (±2%), hard breakdown knee, and low leakage are critical.
Technical Context
This Zener operates in reverse-bias breakdown mode with a well-defined knee at low test currents (IZ = 0.5–5 mA), delivering stable regulation across ambient temperatures from −65 °C to +150 °C. Its junction-to-solder-point thermal resistance is 130 K/W, enabling reliable operation under moderate power derating on standard FR4 layouts.
The device exhibits a positive temperature coefficient of +0.3 mV/K at IZ = 5 mA, making it suitable for temperature-compensated references when paired with negative-coefficient components. Diode capacitance is 300 pF at 1 MHz and 0 V, supporting stable performance in low-frequency bias and clamping roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.96–5.20 V at IZ = 5 mA - ensures ±2% regulation accuracy for 5 V rail stabilization |
| Differential Resistance rdif | 250 Ω at IZ = 0.5 mA - maintains low output impedance even at microamp-level bias currents |
| Reverse Leakage IR | ≤2 µA at VR = 1.5 V - minimizes parasitic current draw in high-impedance sensing nodes |
| Total Power Dissipation Ptot | 400 mW at Tamb = 25 °C on FR4 - supports continuous operation in compact consumer and industrial PCBs |
| Forward Voltage VF | 0.9 V at IF = 10 mA - enables predictable forward conduction for dual-direction protection schemes |
| Junction Temperature Tj | Up to +150 °C - allows deployment in thermally demanding environments without derating penalties |
| Package | SOD323 (SC-76) - 1.35 × 1.75 mm footprint ideal for dense routing and automated assembly |
Pinout & Package
SOD323 plastic surface-mounted package with cathode-indicating marking bar; 2-terminal configuration optimized for minimal board area and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; polarity-sensitive for correct reverse-bias operation |
| 2 | Anode (A) | Typically grounded or tied to lower-potential rail; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Sharp, low-hysteresis transition into regulation enables precise threshold detection without soft clipping |
| Very low leakage current | ≤2 µA at 1.5 V reverse bias preserves signal integrity in high-Z analog monitoring paths |
| Low dynamic impedance at low current | 250 Ω at 0.5 mA supports stable regulation even in micropower bias networks |
| Wide operating temperature range | −65 °C to +150 °C junction rating ensures reliability across automotive under-hood and industrial control environments |
| Standardized SOD323 footprint | Compatible with IPC-7351B land patterns and JEDEC SC-76 reflow profiles for seamless manufacturing integration |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Clamping transient surges on USB D+/D− lines during hot-plug or ESD events. IC Role / Device Role / Timing Role: Zener acts as bidirectional shunt clamp, conducting excess energy to ground when line voltage exceeds 5.1 V. Use Value: Prevents damage to USB transceivers by limiting peak differential voltage to within ±5.1 V tolerance, leveraging <2 µA leakage to avoid signal loading. |
Use Scenario: Providing stable 5.1 V reference for RC-based reset timing in MCU power-up sequencing. IC Role / Device Role / Timing Role: Functions as precision voltage threshold detector that triggers reset release when supply reaches regulation voltage. Use Value: Enables accurate reset delay via predictable VZ stability (±2%) and low rdif, reducing timing variance across temperature and unit-to-unit spread. |
| Low-Power Sensor Bias Network | Industrial Analog Input Protection |
Use Scenario: Generating clean, low-drift bias voltage for MEMS accelerometers or temperature sensors operating from 3.3 V rails. IC Role / Device Role / Timing Role: Supplies regulated 5.1 V reference to sensor excitation circuitry while maintaining ultra-low quiescent current. Use Value: Delivers stable excitation using only 0.5 mA test current, minimizing system power budget impact without sacrificing accuracy. |
Use Scenario: Protecting 0–10 V analog input channels in PLC modules against field-wiring faults and induced transients. IC Role / Device Role / Timing Role: Shunts overvoltage spikes >5.1 V to ground before they reach ADC front-end op-amps. Use Value: Limits fault energy with 400 mW power handling and 130 K/W thermal resistance, preventing latch-up or permanent damage during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C5V1 | Same SOD323 package; tighter 5.1 V ±1% tolerance but higher rdif (400 Ω @ 5 mA); 300 mW Ptot | Better accuracy required where thermal drift compensation is implemented externally | Select when absolute voltage precision outweighs low-current regulation performance |
| MMSZ5231B | SOD-123 package; 5.1 V ±5%; rdif = 17 Ω @ 20 mA; 500 mW Ptot; higher leakage (5 µA @ 1 V) | Higher power handling needed for transient suppression in noisy industrial environments | Select when board layout permits larger footprint and higher surge current capability is prioritized |
Compared with BZX584-C5V1 and MMSZ5231B, PDZ5.1BZ uniquely balances low-leakage operation (≤2 µA), low-current regulation fidelity (250 Ω @ 0.5 mA), and industry-standard SOD323 size-making it optimal for micropower reference and compact clamp designs where leakage and knee sharpness dominate selection criteria.
Availability
PDZ5.1BZ is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset circuits, low-power sensor biasing, and industrial analog input protection requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ5.1BZ 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-grade and industrial-grade small-signal components.
The PDZ-B series targets cost-sensitive, space-constrained applications needing dependable low-power voltage regulation-designed specifically for consumer electronics, IoT edge nodes, and industrial control interfaces where SOD323 scalability and parametric consistency are essential.
FAQ
What is the maximum reverse voltage PDZ5.1BZ can withstand before breakdown?
The PDZ5.1BZ has a specified Zener voltage range of 4.96 V to 5.20 V at IZ = 5 mA, with a hard breakdown knee ensuring stable conduction above ~4.9 V. It is not rated for sustained reverse voltage beyond its VZ specification; operation above 5.2 V must be brief and current-limited to avoid exceeding Ptot = 400 mW.
Can PDZ5.1BZ be used in forward-bias mode like a standard diode?
Yes-its forward voltage is characterized at 0.9 V (max) at IF = 10 mA and 1.1 V (max) at IF = 100 mA. It supports bidirectional protection schemes, though its primary design intent and parameter optimization are for reverse-bias Zener regulation, not rectification.
How does temperature affect the Zener voltage of PDZ5.1BZ?
PDZ5.1BZ has a positive temperature coefficient of +0.3 mV/K at IZ = 5 mA, meaning its VZ increases by approximately 0.3 mV per Kelvin rise in junction temperature. This behavior is stable and repeatable, enabling predictable compensation in reference circuits across −65 °C to +150 °C.
Is PDZ5.1BZ suitable for automotive applications?
No-PDZ5.1BZ is not automotive-qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like the PDZ-B series are neither tested nor warranted for automotive use. For AEC-Q101-compliant Zeners, consult Nexperia's Automotive Zener portfolio separately.
PDZ5.1BZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ5.1BZ FAQ
1.How can I place an order for PDZ5.1BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ5.1BZ 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 PDZ5.1BZ reliable?
The price and inventory of PDZ5.1BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ5.1BZ is usually 5 days.
3.What payment methods are accepted for PDZ5.1BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ5.1BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ5.1BZ?
PDZ5.1BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ5.1BZ 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 PDZ5.1BZ?
For technical support, including PDZ5.1BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ5.1BZ requirements.
6.How does Aetrix verify that PDZ5.1BZ is sourced from the original manufacturer or authorized distributors?
All PDZ5.1BZ 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 PDZ5.1BZ meets industry standards.
7.What is the process for return or replacement of PDZ5.1BZ?
All PDZ5.1BZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ5.1BZ, 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 PDZ5.1BZ part is unused and in its original packaging.
Return procedure for PDZ5.1BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ5.1BZ Tags
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