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Nexperia USA Inc. PDZ5.1B-QZ
- Part No.:
- PDZ5.1B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ5.1B-QZ.pdf
- Description:
- DIODE ZENER 5.1V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,336
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Product details
Overview
PDZ5.1B-QZ from Nexperia is a single Zener diode in SOD323 (SC-76) package, designed for low-power voltage regulation at 5.1 V nominal Zener voltage with ±2 % tolerance, 250 Ω max differential resistance at IZ = 5 mA, and 2 µA max reverse leakage at VR = 1.5 V. It supports automotive-grade operation per AEC-Q101 and delivers stable clamping in power supply feedback paths.
For engineers reviewing the PDZ5.1B-QZ datasheet, PDZ5.1B-QZ pinout, PDZ5.1B-QZ application, or PDZ5.1B-QZ equivalent, this device is selected for precision low-current voltage reference, overvoltage protection in sensor interfaces, and biasing in automotive control modules where compact size and hard breakdown knee are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 4.96–5.20 V at IZ = 5 mA, exhibiting a temperature coefficient of +0.3 mV/K - indicating near-zero thermal drift around 5.1 V. Its low dynamic impedance (250 Ω typ.) ensures tight regulation under varying load currents.
The device features a hard breakdown knee and very low leakage (≤2 µA at 1.5 V), enabling accurate voltage clamping in low-power circuits. Qualified to AEC-Q101, it sustains junction temperatures up to +150 °C and is mounted on FR4 PCBs with standard SOD323 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.96–5.20 V at IZ = 5 mA; defines precise clamping threshold for 5 V rail regulation |
| Differential Resistance (rdif) | 250 Ω max at IZ = 5 mA; ensures minimal output voltage shift under current variation |
| Reverse Leakage (IR) | 2 µA max at VR = 1.5 V; enables low-quiescent-current bias networks |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C; supports continuous operation in compact SMD layouts |
| Thermal Resistance (Rth(j-sp)) | 130 K/W junction-to-solder-point; allows direct thermal path to PCB copper for reliability |
| Temperature Coefficient (SZ) | +0.3 mV/K at IZ = 5 mA; provides near-zero drift across automotive temperature range |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; enables use as low-drop rectifier or ESD clamp in dual-role designs |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-terminal, ultra-compact (1.35 × 1.75 × 0.95 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity marker determines reverse-bias orientation in circuit |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified; validated for under-hood and body-control module deployment |
| Hard breakdown knee | Sharp, non-gradual transition into conduction improves voltage threshold predictability in protection circuits |
| Low leakage at low VR | ≤2 µA at 1.5 V enables use in high-impedance sensing nodes without signal loading |
| Small-outline packaging | SOD323 footprint saves >60 % board area vs. DO-35; compatible with standard reflow profiles |
| Stable temperature coefficient | +0.3 mV/K minimizes calibration drift in 5 V reference applications across −40 to +125 °C |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC input scaling in door latch position sensing. IC Role / Device Role / Timing Role: Zener diode provides stable 5.1 V reference to buffer analog sensor output before digitization. Use Value: Tight ±2 % tolerance and +0.3 mV/K TC ensure <±10 mV reference error over full automotive temperature range. |
Use Scenario: Overvoltage clamp on 3.3 V I²C bus lines exposed to transient coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Reverse-biased PDZ5.1B-QZ shunts transients above 5.1 V to protect downstream level translators. Use Value: Hard breakdown knee and 250 Ω rdif limit clamped voltage to ≤5.3 V during 100 ns surges. |
| USB-C Power Delivery Feedback | Medical Wearable Battery Monitor |
Use Scenario: Precision voltage divider tap in CC/CV loop feedback network for 5 V USB-PD adapter secondary-side regulation. IC Role / Device Role / Timing Role: Zener sets accurate 5.1 V reference point for optocoupler-based isolation feedback. Use Value: Low 2 µA leakage avoids loading high-resistance divider, preserving loop accuracy within ±0.5 %. |
Use Scenario: Low-power battery voltage monitor in disposable glucose meters using coin-cell supply. IC Role / Device Role / Timing Role: Zener regulates internal LDO input to maintain stable 1.8 V core supply during battery discharge. Use Value: 400 mW Ptot and SOD323 thermal resistance support continuous operation at 150 °C junction temp in sealed housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1 | Same 5.1 V nominal, but ±5 % tolerance and 600 Ω rdif; no AEC-Q101 qualification | Acceptable for consumer-grade power supplies, not automotive or medical | Select when cost sensitivity outweighs precision and qualification requirements |
| MMSZ5231B | 5.1 V nominal, ±5 % tolerance, 17 Ω rdif at 20 mA; higher test current shifts operating point | Requires ≥20 mA bias for spec compliance - unsuitable for µA-level sensor biasing | Prefer only in high-current shunt regulator designs where low rdif dominates over leakage |
Compared with BZX584C5V1 and MMSZ5231B, PDZ5.1B-QZ uniquely combines AEC-Q101 qualification, ±2 % tolerance, sub-µA leakage at low VR, and hard-knee behavior - making it the only choice for automotive sensor references and low-power medical monitoring where regulation stability and qualification are non-negotiable.
Availability
PDZ5.1B-QZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery feedback circuits, and medical wearable battery monitors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PDZ5.1B-QZ 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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
PDZ-B-Q series Zener diodes are part of Nexperia's automotive-qualified discrete portfolio, engineered specifically for robust voltage regulation and overvoltage protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse current rating for PDZ5.1B-QZ at 100 µs surge?
The non-repetitive peak reverse current (IZSM) is 5.5 A at tp = 100 µs and Tamb = 25 °C, verified per IEC 60134 limiting values. This rating enables transient suppression in CAN bus protection and ESD-critical interfaces without derating.
Does PDZ5.1B-QZ support wave soldering?
Yes - the SOD323 package is qualified for both reflow and wave soldering. Figure 10 in the datasheet specifies a 2.75 mm preferred transport direction and 1.2 mm solder land width, ensuring mechanical integrity and coplanarity after wave process.
How does the +0.3 mV/K temperature coefficient impact 5 V reference accuracy?
At +0.3 mV/K, the Zener voltage drifts only +30 mV from −40 °C to +125 °C (165 K ΔT), resulting in <±0.6 % total variation relative to 5.1 V nominal - well within 1 % system tolerance for most automotive microcontroller references.
Can PDZ5.1B-QZ be used in forward-bias applications?
Yes - its forward voltage is specified at 0.9 V max (IF = 10 mA) and 1.1 V max (IF = 100 mA), enabling use as a low-drop series diode in bias networks or as a dual-function clamp/rectifier in space-constrained designs.
PDZ5.1B-QZ 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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ5.1B-QZ FAQ
1.How can I place an order for PDZ5.1B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ5.1B-QZ 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-QZ reliable?
The price and inventory of PDZ5.1B-QZ 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-QZ is usually 5 days.
3.What payment methods are accepted for PDZ5.1B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ5.1B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ5.1B-QZ?
PDZ5.1B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ5.1B-QZ 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-QZ?
For technical support, including PDZ5.1B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ5.1B-QZ requirements.
6.How does Aetrix verify that PDZ5.1B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ5.1B-QZ 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-QZ meets industry standards.
7.What is the process for return or replacement of PDZ5.1B-QZ?
All PDZ5.1B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ5.1B-QZ, 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-QZ part is unused and in its original packaging.
Return procedure for PDZ5.1B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ5.1B-QZ Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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