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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. PDZ11B-QF

Name: PDZ11B-QF
Brand: Nexperia USA Inc.
SKU: PDZ11B-QF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDZ11B-QF

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: PDZ11B-QF.pdf

Description:: DIODE ZENER 11V 400MW SOD323

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Inventory:8,756

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Product details

Overview

PDZ11B-QF from Nexperia is a single silicon Zener diode optimized for precision voltage regulation and reference applications in automotive and industrial circuits. It delivers a nominal Zener voltage of 11.0 V at I_Z = 5 mA, with ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.1 μA maximum reverse leakage at V_R = 8.0 V - enabling stable clamping in low-power supply rails and sensor biasing networks.

For engineers reviewing the PDZ11B-QF datasheet, PDZ11B-QF pinout, PDZ11B-QF application, or PDZ11B-QF equivalent, this device supports AEC-Q101-qualified designs requiring tight voltage stability, low thermal drift (7.4 mV/K), and robust surge immunity (3.0 A non-repetitive peak reverse current) in SOD323-packaged space-constrained layouts.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode–anode terminals. Its hard breakdown knee and low dynamic impedance (≤60 Ω at 5 mA) ensure minimal voltage deviation under varying load currents, while the −65 °C to +150 °C storage temperature range supports extended automotive under-hood deployment.

Thermal performance is defined by R_th(j-sp) = 130 K/W (junction-to-solder point) and R_th(j-a) = 340 K/W (junction-to-ambient on FR4 PCB), enabling predictable power derating above 25 °C ambient - critical for reliability in thermally dense control modules and body electronics.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	10.78 V to 11.22 V at I_Z = 5 mA - ensures precise 11 V reference within ±2 % tolerance for feedback loops and analog sensing.
Differential Resistance r_dif	≤60 Ω at I_Z = 5 mA - minimizes output voltage variation under load transients in regulator shunt paths.
Reverse Leakage I_R	≤0.1 μA at V_R = 8.0 V - preserves low quiescent current in battery-backed circuits and high-impedance bias networks.
Temperature Coefficient S_Z	+7.4 mV/K at I_Z = 5 mA - enables predictable, linear V_Z drift for compensated reference designs up to 150 °C junction temperature.
Non-repetitive Peak Reverse Current I_ZSM	3.0 A at t_p = 100 μs - provides transient overvoltage protection against ESD and load dump spikes without failure.
Total Power Dissipation P_tot	400 mW at T_amb ≤ 25 °C on FR4 PCB - defines maximum continuous DC or pulsed power handling in standard surface-mount layouts.
Forward Voltage V_F	≤0.9 V at I_F = 10 mA - confirms low conduction loss when used in forward-biased protection or logic-level clamping roles.

Pinout & Package

PDZ11B-QF is housed in a SOD323 (SC-76) plastic surface-mounted package with two leads: anode (A) and cathode (K). The marking bar on the device body identifies the cathode terminal.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; reverse-biased during Zener operation to clamp voltage to V_Z.
2	Anode (A)	Connected to ground or lower-potential rail; completes reverse-bias path for controlled breakdown conduction.

Key Features

Feature	Design Value
AEC-Q101 qualification	Qualified for automotive applications including engine control units and ADAS power management subsystems.
Hard breakdown knee	Enables sharp, predictable turn-on behavior at V_Z, reducing regulation hysteresis in precision feedback networks.
Low leakage at low V_R	0.1 μA max at 8.0 V supports ultra-low-power standby modes in always-on vehicle modules.
Small SOD323 footprint	1.35 mm × 0.8 mm body size allows placement in high-density PCB layouts such as infotainment power sequencers.
Stable temperature coefficient	+7.4 mV/K enables accurate thermal compensation in reference circuits operating from −40 °C to +125 °C ambient.

Applications

Automotive Body Control Module

Industrial Sensor Signal Conditioning

Use Scenario: Regulating 11 V reference for microcontroller ADC inputs and CAN transceiver bias in door module ECUs.

IC Role / Device Role / Timing Role: Shunt voltage reference providing stable excitation for analog sensors and logic-level clamping for LIN bus receivers.

Use Value: Maintains <±2 % reference accuracy across −40 °C to +125 °C ambient, ensuring consistent ADC conversion and communication integrity.

Use Scenario: Biasing bridge-based pressure transducers in HVAC control systems with 12 V supply rails.

IC Role / Device Role / Timing Role: Precision Zener reference establishing common-mode voltage for instrumentation amplifiers and offset calibration.

Use Value: Delivers 11.0 V ±0.22 V at 5 mA with 60 Ω dynamic impedance, minimizing gain error and thermal drift in 24-bit sigma-delta measurements.

USB-C Power Delivery Protection

Smart Lighting Driver Reference

Use Scenario: Clamping overvoltage transients on 12 V auxiliary rails in USB-C PD sink adapters during hot-plug events.

IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 3.0 A surges (100 μs) while holding clamped voltage below 13.5 V.

Use Value: Prevents damage to downstream DC-DC controllers and USB-PD policy engines without requiring external TVS arrays.

Use Scenario: Setting reference voltage for constant-current LED driver ICs in automotive interior lighting with dimming PWM control.

IC Role / Device Role / Timing Role: Stable 11 V reference source for current-sense amplifier feedback and thermal foldback thresholds.

Use Value: Enables ±1 % LED current accuracy over temperature due to low 7.4 mV/K drift and sub-μA leakage at standby voltages.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C11	Same 11 V nominal Zener voltage but ±5 % tolerance, higher 90 Ω r_dif, no AEC-Q101 qualification.	Targeted at consumer-grade portable electronics, not automotive environments.	Select when cost sensitivity outweighs automotive qualification and tighter regulation requirements.
MMSZ5240B	11 V nominal, ±5 % tolerance, 200 Ω r_dif, 100 mW P_tot, SOD-123 package (larger footprint).	Suitable for general-purpose industrial boards where thermal margin and board space permit larger packages.	Choose only if SOD323 footprint is unavailable and lower power dissipation (100 mW vs 400 mW) is acceptable.

Compared with BZX84-C11 and MMSZ5240B, PDZ11B-QF offers superior voltage accuracy (±2 %), lower dynamic impedance (60 Ω), higher surge capability (3.0 A), and automotive qualification - making it the optimal choice for safety-critical 11 V reference and clamping in compact, thermally demanding automotive modules.

Availability

PDZ11B-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery protection, and smart LED lighting systems requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PDZ11B-QF 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-qualified components and advanced packaging technologies.

PDZ11B-QF belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes designed specifically for precision voltage regulation and transient suppression in automotive power management and signal conditioning subsystems.

FAQ

What is the maximum continuous reverse current rating for PDZ11B-QF?

The PDZ11B-QF has no specified continuous reverse current rating - it is rated for Zener operation at I_Z = 5 mA (typical test condition), with maximum continuous power dissipation limited to 400 mW at 25 °C ambient. Operation beyond this requires thermal derating per the published power derating curve (Fig. 1), and sustained current must remain within P_tot/V_Z limits to avoid junction overheating.

Can PDZ11B-QF be used in forward-biased configurations?

Yes - PDZ11B-QF exhibits a forward voltage of ≤0.9 V at 10 mA, making it suitable for low-drop clamping or polarity protection in series with signal lines. However, its primary design intent and characterization are for reverse-biased Zener operation; forward conduction is not optimized for switching or rectification duty cycles.

How does the temperature coefficient affect regulation accuracy over temperature?

With a measured S_Z of +7.4 mV/K at 5 mA, PDZ11B-QF's Zener voltage increases by approximately 0.74 V over a 100 K rise (e.g., −40 °C to +60 °C ambient). This linear drift is well-characterized and usable in compensated reference designs; uncorrected use across full automotive temperature range introduces ~6.7 % total V_Z shift relative to nominal 11.0 V.

Is the SOD323 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies a reflow soldering footprint (Fig. 9) with 0.5 mm pad width and 1.65 mm pad length, compatible with IPC-7095-compliant lead-free reflow profiles. Peak temperatures up to 260 °C are supported, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life at ≤30 °C/85 % RH).

PDZ11B-QF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: PDZ-B-Q

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):: 10 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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

PDZ11B-QF FAQ

1.How can I place an order for PDZ11B-QF through Aetrix?

Please submit a Request for Quotation (RFQ) for PDZ11B-QF 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 PDZ11B-QF reliable?

The price and inventory of PDZ11B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ11B-QF is usually 5 days.

3.What payment methods are accepted for PDZ11B-QF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ11B-QF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDZ11B-QF?

PDZ11B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDZ11B-QF 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 PDZ11B-QF?

For technical support, including PDZ11B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ11B-QF requirements.

6.How does Aetrix verify that PDZ11B-QF is sourced from the original manufacturer or authorized distributors?

All PDZ11B-QF 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 PDZ11B-QF meets industry standards.

7.What is the process for return or replacement of PDZ11B-QF?

All PDZ11B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ11B-QF, 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 PDZ11B-QF part is unused and in its original packaging.

Return procedure for PDZ11B-QF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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