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Nexperia USA Inc. PDZ11BZ
- Part No.:
- PDZ11BZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ11BZ.pdf
- Description:
- DIODE ZENER 11V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:29,805
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Product details
Overview
PDZ11BZ from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 11 V nominal working voltage with ±2 % tolerance, 60 Ω max differential resistance at IZ = 5 mA, and 0.1 µA max reverse leakage at VR = 8.0 V - used in biasing, reference, and overvoltage protection circuits in consumer power supplies and sensor interfaces.
For engineers reviewing the PDZ11BZ datasheet, PDZ11BZ pinout, PDZ11BZ application, or PDZ11BZ equivalent, this page delivers verified electrical specs, thermal derating behavior, cathode/anode terminal mapping, and direct-fit alternatives for low-current (<10 mA) 11 V stabilization tasks in space-constrained SMT designs.
Technical Context
The PDZ11BZ operates as a two-terminal voltage reference device with sharp breakdown knee and hard Zener characteristic above 10.78 V (min) and below 11.22 V (max) at IZ = 5 mA. Its low dynamic impedance (≤60 Ω) ensures stable regulation under small-signal load variations.
Thermal performance is defined by Rth(j-a) = 340 K/W on FR4 PCB and junction temperature limit of +150 °C. Power dissipation is derated linearly above +25 °C ambient, reaching zero at +150 °C per Fig. 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11.0 V (min 10.78 V / max 11.22 V at IZ = 5 mA); enables precise 11 V rail clamping or reference generation |
| Differential Resistance | ≤60 Ω at IZ = 5 mA; ensures minimal output voltage shift under ±1 mA load current change |
| Reverse Leakage Current | ≤0.1 µA at VR = 8.0 V; guarantees negligible standby power loss in high-impedance bias networks |
| Forward Voltage | 0.9 V at IF = 10 mA; supports reliable anode-cathode polarity verification during functional test |
| Total Power Dissipation | 400 mW at Tamb ≤ 25 °C on FR4 PCB; defines maximum continuous DC power handling before thermal shutdown |
| Temperature Coefficient | +7.4 mV/K at IZ = 5 mA; indicates positive drift rate requiring compensation in wide-temperature-range references |
| Package | SOD323 (SC-76); 1.35 mm × 1.75 mm footprint with 0.65 mm height - compatible with standard reflow soldering profiles |
Pinout & Package
SOD323 plastic surface-mounted package with 2 leads; cathode marked by bar on top surface; body dimensions: 1.35 mm × 1.75 mm × 0.95 mm (L × W × H); recommended reflow land pattern per Fig. 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction; marked by bar on package |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for reverse-biased operation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 60 Ω max at 5 mA enables tight voltage regulation in feedback loops and analog references |
| Hard breakdown knee | Sharp transition from blocking to conduction improves turn-on predictability in overvoltage clamp circuits |
| Small SMD footprint | SOD323 package saves >60 % board area vs. DO-35 through-hole equivalents for high-density layouts |
| ±2 % voltage tolerance | Guarantees 10.78–11.22 V range without post-production trimming in cost-sensitive applications |
| Low leakage current | 0.1 µA max at 8 V reverse bias minimizes quiescent current in battery-powered sensor bias networks |
Applications
| Power Supply Rail Clamping | Sensor Bias Reference |
|---|---|
Use Scenario: Protecting 12 V microcontroller I/O pins from transient overvoltage spikes in automotive accessory modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp input voltage to ≤11.22 V. Use Value: Prevents latch-up or ESD damage while drawing <0.1 µA standby current when undisturbed. |
Use Scenario: Providing stable 11 V reference for analog front-end amplifiers in industrial temperature transmitters. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing fixed bias point for op-amp input stages. Use Value: Delivers 7.4 mV/K temperature coefficient predictable enough for software-based drift compensation. |
| LED Current Regulation | Comparator Threshold Setting |
Use Scenario: Stabilizing forward current in low-power indicator LED strings powered from variable 15 V supply rails. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage across series resistor to set LED current. Use Value: Achieves ±2 % current accuracy with 60 Ω dynamic impedance limiting sensitivity to supply ripple. |
Use Scenario: Setting precise trip point for window comparators monitoring 12 V system voltage in telecom power management units. IC Role / Device Role / Timing Role: Fixed-voltage reference defining upper threshold in dual-comparator overvoltage detection circuit. Use Value: Enables 11.0 V ±0.22 V threshold accuracy without trimming resistors or external DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C11 | DO-35 through-hole package; 5 % tolerance; 200 Ω max ZZT; 5 µA max IR at 8.8 V | Requires PCB real estate and wave-solder process; less precise regulation and higher leakage | Select for legacy through-hole designs or where manual prototyping favors axial leads |
| MMSZ5240B | SOD-123 package; 5 % tolerance; 20 Ω max ZZT at 20 mA; 0.1 µA max IR at 8.8 V | Lower impedance but rated at higher test current (20 mA); tighter thermal resistance (Rth(j-a) = 300 K/W) | Select when higher current regulation (>5 mA) or improved thermal margin is required |
Compared with PDZ11BZ, BZX55C11 trades precision and SMT compatibility for mechanical robustness and legacy support, while MMSZ5240B offers lower impedance at higher bias current but requires re-evaluation of power derating and layout constraints.
Availability
PDZ11BZ is available at Aetrix Electronics and suitable for power supply rail clamping, sensor bias reference, LED current regulation, and comparator threshold setting requiring stable component supply and guaranteed ±2 % voltage tolerance.
Supply support for PDZ11BZ 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 leading global semiconductor expert delivering high-performance logic, discrete, and MOSFET devices optimized for efficiency, reliability, and miniaturization in high-volume electronics.
The PDZ-B series targets low-power voltage regulation in space-constrained consumer, computing, and industrial applications - emphasizing tight tolerance, low leakage, and SOD323 manufacturability.
FAQ
What is the maximum reverse current the PDZ11BZ can handle continuously?
The PDZ11BZ has no specified continuous reverse current rating; its operation is defined by power dissipation limits. At 25 °C ambient, it supports up to 36.4 mA reverse current (400 mW ÷ 11 V) before exceeding Ptot. Derating applies above 25 °C per Fig. 1's linear curve.
Can PDZ11BZ be used in series for higher voltage regulation?
No - the PDZ-B series is not characterized or qualified for series connection. Variations in Zener voltage tolerance (±2 %), temperature coefficient (+7.4 mV/K), and dynamic impedance would cause uneven voltage sharing and potential thermal runaway.
How does the 7.4 mV/K temperature coefficient affect long-term stability?
At 50 °C ambient rise, the Zener voltage increases by ~185 mV (7.4 × 25), shifting regulation from 11.0 V to ~11.185 V. For applications requiring <0.5 % drift, active compensation or selection of lower-coefficient parts (e.g., PDZ8.2B at +4.6 mV/K) is necessary.
Is the SOD323 package compatible with standard IPC-7351B land patterns?
Yes - the PDZ11BZ's SOD323 outline matches IPC-7351B "SOD323" generic footprint. Recommended solder lands are 0.5 mm × 0.6 mm (2×), with 0.6 mm pad spacing and 0.25 mm solder mask expansion, per Fig. 9 in the datasheet.
PDZ11BZ 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):
- 11 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
PDZ11BZ FAQ
1.How can I place an order for PDZ11BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ11BZ 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 PDZ11BZ reliable?
The price and inventory of PDZ11BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ11BZ is usually 5 days.
3.What payment methods are accepted for PDZ11BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ11BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ11BZ?
PDZ11BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ11BZ 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 PDZ11BZ?
For technical support, including PDZ11BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ11BZ requirements.
6.How does Aetrix verify that PDZ11BZ is sourced from the original manufacturer or authorized distributors?
All PDZ11BZ 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 PDZ11BZ meets industry standards.
7.What is the process for return or replacement of PDZ11BZ?
All PDZ11BZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ11BZ, 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 PDZ11BZ part is unused and in its original packaging.
Return procedure for PDZ11BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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