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Nexperia USA Inc. PDZ11BF
- Part No.:
- PDZ11BF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ11BF.pdf
- Description:
- DIODE ZENER 11V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,950
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Product details
Overview
PDZ11BF from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in surface-mounted applications. It provides a nominal 11 V Zener voltage at 5 mA, with ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.1 μA maximum reverse leakage at 8.0 V, housed in an SOD323 (SC-76) package for compact PCB layouts.
For engineers reviewing the PDZ11BF datasheet, PDZ11BF pinout, PDZ11BF application, or PDZ11BF equivalent, this device is selected for precision clamping, reference voltage generation, and overvoltage protection in space-constrained consumer, industrial, and communication power rails where stable low-current regulation is required.
Technical Context
The PDZ11BF operates as a two-terminal voltage reference diode with hard breakdown knee and low dynamic impedance-critical for stable regulation under varying load conditions. Its temperature coefficient of +7.4 mV/K at 5 mA enables predictable drift behavior in ambient-temperature-varying circuits.
Thermal resistance from junction to solder point is 130 K/W, and junction-to-ambient is 340 K/W on FR4 PCB, defining its derating envelope up to 150 °C junction temperature. Maximum non-repetitive peak reverse current is 3.0 A for 100 µs surges, supporting transient suppression in low-energy systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 10.78 V to 11.22 V at IZ = 5 mA - defines tight regulation window for reference stability |
| Differential Resistance rdif | ≤ 60 Ω at IZ = 5 mA - ensures minimal output voltage shift under small current variations |
| Reverse Leakage IR | ≤ 0.1 μA at VR = 8.0 V - preserves low quiescent current in battery-powered or high-impedance bias networks |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables efficient forward conduction during polarity-reversal protection |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - sets thermal design boundary for standard FR4 PCB layout |
| Temperature Coefficient SZ | +7.4 mV/K at IZ = 5 mA - quantifies positive VZ drift per degree, enabling compensation in precision references |
| Junction Temperature Tj | −65 °C to +150 °C - supports operation across extended industrial temperature ranges |
Pinout & Package
PDZ11BF uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.3 mm footprint, 0.95 mm height, cathode-marked with a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 60 Ω max at 5 mA - maintains <±10 mV output variation across ±1 mA load changes |
| Hard breakdown knee | Sharp, well-defined Zener transition - eliminates ambiguity in turn-on threshold for reliable clamping |
| Low leakage current | 0.1 μA max at 8.0 V - avoids loading of high-impedance feedback or sensing nodes |
| Tight voltage tolerance | ±2 % at 5 mA - reduces need for post-assembly trimming in voltage reference designs |
| SOD323 package compatibility | Standard reflow footprint per Fig. 9 - enables automated placement and soldering without custom stencil adjustments |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Protects USB data/power lines from ESD-induced voltage spikes exceeding 5.5 V. IC Role / Device Role / Timing Role: Zener clamp placed between VBUS and GND, conducting above 11 V to shunt surge energy. Use Value: Limits transient overshoot to safe levels while drawing <0.1 μA standby current, preserving signal integrity without loading the bus. |
Use Scenario: Generates a stable 11 V reference for external reset supervisor ICs monitoring 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Provides precise, low-drift voltage threshold for reset assertion timing. Use Value: Enables accurate reset window definition with +7.4 mV/K drift compensated via circuit layout, avoiding false resets in temperature-varying environments. |
| Industrial Sensor Signal Conditioning | LED Driver Current Sense Protection |
Use Scenario: Stabilizes excitation voltage for bridge-based pressure sensors operating from 12 V supply. IC Role / Device Role / Timing Role: Zener-regulated bias source feeding Wheatstone bridge, reducing supply sensitivity. Use Value: Delivers <0.5 % total error contribution (including tolerance and tempco), improving sensor accuracy by >1 LSB in 12-bit ADC systems. |
Use Scenario: Clamps feedback node voltage in constant-current LED drivers to prevent op-amp saturation during fault conditions. IC Role / Device Role / Timing Role: Fast-acting voltage limiter protecting amplifier input during open-load or short-circuit events. Use Value: Responds within nanoseconds to overvoltage transients, limiting node excursion to 11.22 V and preventing latch-up in analog control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B11 | Same 11 V nominal, ±2 %, but SOD323 package with 400 mW rating and 70 Ω rdif at 5 mA | Higher dynamic impedance increases regulation error under load variation | Select when legacy BOM alignment is prioritized over lowest possible impedance |
| MMSZ5240B | 11 V nominal, ±5 % tolerance, 200 mW rating, 20 Ω rdif, SOD-123 package | Looser tolerance and lower power limit reduce suitability for precision references | Prefer for cost-sensitive, non-critical clamping where size and accuracy trade-offs are acceptable |
Compared with BZX384-B11 and MMSZ5240B, PDZ11BF delivers tighter voltage tolerance and lower dynamic impedance in the same SOD323 footprint-making it optimal for applications demanding high reference fidelity without board area penalty.
Availability
PDZ11BF is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset supervision, industrial sensor biasing, and LED driver feedback clamping requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ11BF 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
PDZ11BF belongs to the PDZ-B series of low-power Zener diodes engineered for general-purpose voltage regulation in compact, cost-sensitive SMD designs-emphasizing tight tolerance, low leakage, and robust thermal performance on standard PCBs.
FAQ
What is the maximum continuous reverse current the PDZ11BF can handle at 25 °C?
The PDZ11BF does not specify a maximum continuous reverse current; instead, its regulation is defined at test current IZ = 5 mA. Continuous operation beyond 5 mA must respect the 400 mW total power dissipation limit-so at 11 V, maximum sustainable IZ is ~36 mA. Exceeding this risks thermal runaway unless board-level heatsinking is implemented.
Can PDZ11BF be used in place of a 12 V Zener for overvoltage protection?
No-PDZ11BF has a nominal Zener voltage of 11 V (10.78–11.22 V), not 12 V. Substituting it for a 12 V part would result in premature clamping below the intended trip point, potentially causing system malfunction. For 12 V regulation, PDZ12B (11.74–12.24 V) is the correct series member.
How does the +7.4 mV/K temperature coefficient affect long-term voltage reference stability?
A +7.4 mV/K coefficient means VZ increases by ~7.4 mV per °C rise in junction temperature. Over a 100 °C range (−25 °C to +75 °C ambient), this yields ~0.74 V drift-approximately 6.7 % of nominal VZ. For high-stability references, this requires either temperature compensation or operation within narrow ambient bands.
Is the SOD323 package of PDZ11BF compatible with standard reflow profiles for lead-free assembly?
Yes-Nexperia specifies PDZ11BF for standard lead-free reflow per JEDEC J-STD-020. The SOD323 footprint in Figure 9 (0.6 mm pad width, 1.65 mm pad length, 0.5 mm pitch) aligns with IPC-7351B density level 'N', supporting peak temperatures up to 260 °C for ≤ 30 seconds without degradation.
PDZ11BF 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
PDZ11BF FAQ
1.How can I place an order for PDZ11BF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ11BF 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 PDZ11BF reliable?
The price and inventory of PDZ11BF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ11BF is usually 5 days.
3.What payment methods are accepted for PDZ11BF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ11BF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ11BF?
PDZ11BF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ11BF 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 PDZ11BF?
For technical support, including PDZ11BF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ11BF requirements.
6.How does Aetrix verify that PDZ11BF is sourced from the original manufacturer or authorized distributors?
All PDZ11BF 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 PDZ11BF meets industry standards.
7.What is the process for return or replacement of PDZ11BF?
All PDZ11BF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ11BF, 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 PDZ11BF part is unused and in its original packaging.
Return procedure for PDZ11BF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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