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Nexperia USA Inc. PDZ5.1B-QF
- Part No.:
- PDZ5.1B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ5.1B-QF.pdf
- Description:
- DIODE ZENER 5.1V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,065
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Product details
Overview
PDZ5.1B-QF from Nexperia is a single Zener diode designed for precision voltage regulation in low-power automotive and industrial circuits, with a nominal Zener voltage of 5.1 V (4.96–5.20 V at IZ = 5 mA), dynamic impedance of 250 Ω at IZ = 0.5 mA, leakage current ≤2 µA at VR = 1.5 V, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the PDZ5.1B-QF datasheet, PDZ5.1B-QF pinout, PDZ5.1B-QF application, or PDZ5.1B-QF equivalent, this device is selected for stable reference generation in power supply feedback loops, ESD-protected sensor biasing, and automotive microcontroller reset circuitry where tight voltage tolerance (±2 %), low leakage, and hard breakdown knee are critical.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals. It delivers a tightly controlled 5.1 V regulation point with temperature coefficient of +0.3 mV/K at IZ = 5 mA - indicating near-zero thermal drift in mid-voltage range - and exhibits a hard breakdown knee enabling predictable turn-on behavior at low currents.
Its SOD323 (SC-76) package supports surface-mount assembly on FR4 PCBs with standard reflow footprints, and thermal resistance from junction to solder point is 130 K/W, enabling reliable operation up to Tj = +150 °C when derated per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.96–5.20 V at IZ = 5 mA - defines precise regulation window for 5 V system references |
| Differential Resistance rdif | 250 Ω at IZ = 0.5 mA - ensures minimal output voltage shift under light load variation |
| Reverse Leakage IR | ≤2 µA at VR = 1.5 V - preserves low quiescent current in battery-powered bias networks |
| Forward Voltage VF | 0.9 V at IF = 10 mA - enables use as clamping diode in bidirectional protection schemes |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive modules without forced cooling |
| Temperature Coefficient SZ | +0.3 mV/K at IZ = 5 mA - provides near-zero drift for stable reference over −40 °C to +125 °C ambient |
| Junction Temperature Tj | +150 °C maximum - enables deployment in engine control units and transmission control modules |
Pinout & Package
The PDZ5.1B-QF is housed in a SOD323 (SC-76) plastic surface-mounted package with 2 leads and a cathode-marking bar on the top surface. The package measures 1.8 × 1.35 × 0.95 mm and is optimized for high-density PCB layouts with standard reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified - certified for use in automotive powertrain, body electronics, and ADAS modules |
| Low dynamic impedance | 250 Ω at 0.5 mA - maintains regulation accuracy even with weak bias currents in sensor interfaces |
| Hard breakdown knee | Sharp transition from non-conduction to regulation - eliminates ambiguity in threshold detection circuits |
| Low leakage current | ≤2 µA at 1.5 V reverse bias - minimizes error in high-impedance voltage divider networks |
| Small footprint | SOD323 package (1.8 × 1.35 mm) - enables placement adjacent to ICs in space-constrained ECUs |
Applications
| Automotive Microcontroller Reset Circuit | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Provides clean, temperature-stable reset voltage for 5 V microcontrollers in engine control units. IC Role / Device Role / Timing Role: Zener diode acts as precision shunt reference in RC-based reset generator, defining VREF for comparator input. Use Value: ±2 % tolerance and +0.3 mV/K TC ensure reset threshold remains within 5.0–5.2 V across −40 °C to +125 °C ambient. |
Use Scenario: Supplies stable bias voltage to analog output sensors (e.g., pressure transducers) in factory automation systems. IC Role / Device Role / Timing Role: Functions as low-leakage shunt regulator in two-resistor voltage divider, setting excitation voltage for bridge sensors. Use Value: ≤2 µA leakage prevents loading error in high-Z divider networks, preserving measurement linearity. |
| USB-C Power Delivery Clamp | ESD-Protected CAN Transceiver Bias |
|
Use Scenario: Clamps transient overvoltage on USB-C VBUS line during hot-plug events in automotive infotainment head units. IC Role / Device Role / Timing Role: Shunt limiter placed between VBUS and ground, conducting only above 5.1 V to protect downstream DC-DC converters. Use Value: Hard breakdown knee ensures fast, repeatable clamping onset without snapback delay or oscillation. |
Use Scenario: Supplies regulated 5.1 V bias to CAN transceiver's VIO pin in vehicle network gateways. IC Role / Device Role / Timing Role: Zener regulates local I/O supply independent of main 5 V rail, improving noise immunity on CANH/CANL lines. Use Value: 250 Ω dynamic impedance limits voltage deviation to <±50 mV under 1 mA load step, maintaining CAN signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1 | Same 5.1 V nominal, ±5 % tolerance, higher leakage (≤5 µA), no AEC-Q101 qualification | Not suitable for automotive safety-critical modules; acceptable for consumer-grade power supplies | Select when cost is prioritized over automotive compliance and tighter tolerance |
| MMSZ5231B | 5.1 V nominal, ±5 % tolerance, 600 mW Ptot, SOD-123 package (larger footprint) | Higher power handling but lacks AEC-Q101; requires larger PCB area | Select when higher surge energy absorption is needed and board space permits SOD-123 |
Compared with BZX584C5V1 and MMSZ5231B, PDZ5.1B-QF uniquely combines AEC-Q101 qualification, ±2 % tolerance, and SOD323 miniaturization - making it the only choice for space-constrained, thermally demanding automotive voltage references requiring production-grade reliability.
Availability
PDZ5.1B-QF is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and USB-C power delivery protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PDZ5.1B-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.
The PDZ-B-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage reference and clamping functions in harsh automotive environments where stability, low leakage, and miniature form factor are mandatory.
FAQ
What is the maximum reverse voltage rating before breakdown for PDZ5.1B-QF?
The PDZ5.1B-QF does not specify a distinct "maximum reverse voltage" rating prior to breakdown; instead, it is characterized by its Zener voltage VZ = 4.96–5.20 V at IZ = 5 mA. Below this threshold, reverse leakage remains ≤2 µA at 1.5 V, and the device enters controlled breakdown only when reverse bias exceeds ~4.96 V under defined test conditions.
Can PDZ5.1B-QF be used in forward conduction mode like a standard diode?
Yes - PDZ5.1B-QF exhibits a forward voltage drop of 0.9 V at 10 mA and 1.1 V at 100 mA, meeting typical silicon diode conduction behavior. Its 200 mA continuous forward current rating (per Table 5) supports use as a polarity protection or clamping diode in dual-role circuits, provided thermal limits are observed.
How does the +0.3 mV/K temperature coefficient affect regulation accuracy over temperature?
A +0.3 mV/K coefficient means VZ increases by 0.3 mV per Kelvin rise in junction temperature. Over a 100 K range (−40 °C to +60 °C), this yields a total shift of +30 mV - well within the ±120 mV initial tolerance band (4.96–5.20 V). This near-zero drift makes it ideal for applications needing stable 5 V references without external compensation.
Is the SOD323 package compatible with standard automated optical inspection (AOI) systems?
Yes - the SOD323 package features a visible cathode marking bar and consistent lead geometry per Figure 8, enabling reliable detection by AOI systems calibrated for SC-76 footprints. Its 1.8 × 1.35 mm body and 0.4–0.5 mm lead pitch meet IPC-A-610 Class 2/3 solder joint inspection criteria when assembled using the recommended reflow footprint in Figure 9.
PDZ5.1B-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):
- 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-QF FAQ
1.How can I place an order for PDZ5.1B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ5.1B-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 PDZ5.1B-QF reliable?
The price and inventory of PDZ5.1B-QF 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-QF is usually 5 days.
3.What payment methods are accepted for PDZ5.1B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ5.1B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ5.1B-QF?
PDZ5.1B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ5.1B-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 PDZ5.1B-QF?
For technical support, including PDZ5.1B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ5.1B-QF requirements.
6.How does Aetrix verify that PDZ5.1B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ5.1B-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 PDZ5.1B-QF meets industry standards.
7.What is the process for return or replacement of PDZ5.1B-QF?
All PDZ5.1B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ5.1B-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 PDZ5.1B-QF part is unused and in its original packaging.
Return procedure for PDZ5.1B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ5.1B-QF Tags
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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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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