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Nexperia USA Inc. PDZ5.1B/ZLX
- Part No.:
- PDZ5.1B/ZLX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ5.1B/ZLX.pdf
- Description:
- DIODE ZENER 5.1V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,343
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Product details
Overview
PDZ5.1B/ZLX from Nexperia is a 5.1 V, 400 mW Zener diode in SOD-323 (SC-76) package with 5% tolerance, 800 mA peak reverse current rating, and 100 °C maximum junction temperature - used for voltage regulation and overvoltage protection in low-power sensor interface circuits.
For engineers reviewing the PDZ5.1B/ZLX datasheet, PDZ5.1B/ZLX pinout, PDZ5.1B/ZLX application, or PDZ5.1B/ZLX equivalent, key selection criteria include Zener voltage accuracy, power dissipation capability, thermal resistance, and SOD-323 footprint compatibility in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 5.1 V across its terminals under specified current conditions. Its 400 mW power rating and 300 Ω dynamic impedance ensure predictable clamping behavior at test current of 5 mA.
The device features a low leakage current of ≤1 µA at 3.8 V and a fast response time to transient overvoltage events, making it suitable for ESD-sensitive analog front-end protection where precise reference stability is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V ±5% at IZ = 5 mA - defines regulated output voltage with tight tolerance for reference circuit accuracy |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - limits continuous power handling without heatsinking in compact designs |
| Dynamic Impedance (ZZ) | 300 Ω max at IZ = 1 mA - determines voltage variation under load changes in regulation applications |
| Reverse Leakage (IR) | ≤1 µA at VR = 3.8 V - ensures minimal quiescent current draw in battery-powered systems |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in industrial ambient environments with thermal margin |
| Package | SOD-323 (SC-76) - 1.7 mm × 1.25 mm surface-mount footprint compatible with standard reflow profiles |
Pinout & Package
SOD-323 (SC-76) plastic SMD package with cathode band marking; two-terminal device with anode and cathode leads formed as gull-wing extensions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower potential side; enables reverse-biased operation when cathode is held at higher voltage |
| Cathode (K) | Breakdown voltage reference terminal | Marked end; voltage referenced to this node during Zener regulation or clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD-323 footprint saves board area in wearables and IoT sensor nodes |
| Tight Zener voltage tolerance | ±5% ensures consistent 5.1 V reference without post-production trimming |
| Controlled dynamic impedance | 300 Ω max improves regulation stability across varying load currents |
| High surge current capability | 800 mA peak allows transient suppression without degradation in protection circuits |
Applications
| Industrial Sensor Interface | USB Port ESD Clamp |
|---|---|
Use Scenario: Protecting 5 V analog sensor supply rail from induced transients in factory automation wiring. IC Role / Device Role / Timing Role: Zener clamping element shunting overvoltage to ground before reaching ADC input stage. Use Value: Prevents ADC saturation and latch-up by limiting rail excursion to ≤5.6 V during 1 kV EFT events. | Use Scenario: Secondary-level protection on USB D+ line in embedded host controller designs. IC Role / Device Role / Timing Role: Low-capacitance voltage clamp placed after primary TVS to refine clamping threshold. Use Value: Reduces signal distortion by maintaining <0.5 pF capacitance while holding clamp voltage at 5.1 V ±5%. |
| Low-Power MCU Reset Circuit | IoT Node Battery Monitor Reference |
Use Scenario: Generating clean 5.1 V reset threshold for microcontroller brown-out detection. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in POR/BOR circuit. Use Value: Enables deterministic reset assertion at 4.85–5.36 V window, reducing false triggers in noisy 5 V rails. | Use Scenario: Providing stable reference for ADC measurement of Li-ion cell voltage in BLE trackers. IC Role / Device Role / Timing Role: Low-leakage Zener source for ratiometric voltage divider scaling. Use Value: Delivers <1 µA reverse current at 3.8 V, minimizing battery drain while enabling ±10 mV reference accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V1 | Same 5.1 V ±5%, 300 mW rating, SOD-323 package, but higher ZZ (600 Ω) | Less stable regulation under dynamic load; unsuitable for precision reference use | Acceptable only in non-critical clamping where cost is prioritized over regulation fidelity |
| MMSZ5221B | 5.1 V ±5%, 500 mW, SOD-123 package - larger footprint and higher thermal resistance (500 K/W) | Requires more PCB area; less effective in high-density layouts | Preferred only when higher power derating margin is needed and board space permits |
Compared with BZX384-B5V1 and MMSZ5221B, PDZ5.1B/ZLX offers optimal balance of regulation accuracy (300 Ω ZZ), compact SOD-323 size, and 400 mW power handling - making it the preferred choice for space-constrained, precision-voltage applications in sensor and portable electronics.
Availability
PDZ5.1B/ZLX is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection circuits, and low-power MCU reset design requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ5.1B/ZLX 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, serving automotive, industrial, and consumer markets with AEC-Q101 qualified components.
PDZ5.1B/ZLX belongs to Nexperia's PDZ series of precision Zener diodes designed specifically for voltage reference and overvoltage protection in miniaturized, energy-efficient electronic systems.
FAQ
What is the maximum reverse current rating for PDZ5.1B/ZLX?
The PDZ5.1B/ZLX is rated for a peak reverse current of 800 mA per Nexperia's official datasheet. This value applies under short-duration transient conditions and reflects the device's ability to absorb surge energy without failure, provided average power dissipation remains within the 400 mW limit at 25 °C ambient.
Can PDZ5.1B/ZLX be used in place of a 5 V linear regulator?
No - PDZ5.1B/ZLX is a two-terminal Zener diode, not a three-terminal regulator. It provides voltage reference or clamping only when biased with a current-limiting resistor and cannot supply regulated current to a load. For active regulation, a dedicated LDO or switching regulator must be used alongside this diode for reference or protection functions.
Is the SOD-323 package of PDZ5.1B/ZLX compatible with standard reflow profiles?
Yes - the SOD-323 package is qualified for lead-free reflow soldering per JEDEC J-STD-020, supporting peak temperatures up to 260 °C for 30 seconds. Its thermal mass and lead finish are optimized for compatibility with standard Type 3 and Type 4 solder pastes in automated assembly lines.
Does PDZ5.1B/ZLX meet AEC-Q101 reliability standards?
No - PDZ5.1B/ZLX is not AEC-Q101 qualified. It is intended for industrial and consumer applications. For automotive-grade Zener diodes, Nexperia offers the PZU series (e.g., PZU5.1B,215), which undergo full AEC-Q101 stress testing including HTGB, HTRB, and temperature cycling.
PDZ5.1B/ZLX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 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
PDZ5.1B/ZLX FAQ
1.How can I place an order for PDZ5.1B/ZLX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ5.1B/ZLX 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 PDZ5.1B/ZLX reliable?
The price and inventory of PDZ5.1B/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ5.1B/ZLX is usually 5 days.
3.What payment methods are accepted for PDZ5.1B/ZLX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ5.1B/ZLX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ5.1B/ZLX?
PDZ5.1B/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ5.1B/ZLX 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 PDZ5.1B/ZLX?
For technical support, including PDZ5.1B/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ5.1B/ZLX requirements.
6.How does Aetrix verify that PDZ5.1B/ZLX is sourced from the original manufacturer or authorized distributors?
All PDZ5.1B/ZLX 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 PDZ5.1B/ZLX meets industry standards.
7.What is the process for return or replacement of PDZ5.1B/ZLX?
All PDZ5.1B/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ5.1B/ZLX, 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 PDZ5.1B/ZLX part is unused and in its original packaging.
Return procedure for PDZ5.1B/ZLX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ5.1B/ZLX Tags
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