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Nexperia USA Inc. PDZ7.5B-QZ
- Part No.:
- PDZ7.5B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ7.5B-QZ.pdf
- Description:
- DIODE ZENER 7.5V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,423
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Product details
Overview
PDZ7.5B-QZ from Nexperia is a single Zener diode designed for precision voltage regulation in low-power circuits, featuring a nominal Zener voltage of 7.5 V (min 7.28 V, max 7.60 V at IZ = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.5 μA maximum reverse leakage at 5.0 V. It operates in automotive-grade SOD323 (SC-76) package and is qualified to AEC-Q101 for use in engine control units and body electronics.
For engineers reviewing the PDZ7.5B-QZ datasheet, PDZ7.5B-QZ pinout, PDZ7.5B-QZ application, or PDZ7.5B-QZ equivalent, this device is selected for stable reference generation in 5–12 V rail monitoring, ECU power-supply feedback loops, and low-current biasing where tight voltage tolerance and hard breakdown knee are required.
Technical Context
This Zener diode functions as a two-terminal shunt voltage regulator with a defined breakdown threshold and low dynamic impedance. Its 7.5 V nominal working voltage is specified at 5 mA test current, with temperature coefficient of +4.0 mV/K and diode capacitance of 170 pF at 0 V (f = 1 MHz).
The device exhibits hard breakdown characteristics and very low leakage (<0.5 μA at VR = 5.0 V), enabling accurate clamping in signal conditioning and overvoltage protection circuits. Thermal resistance from junction to ambient is 340 K/W on FR4 PCB, supporting operation up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.28 V to 7.60 V at IZ = 5 mA - defines precise clamping threshold for 7.5 V nominal rail regulation |
| Differential Resistance (rdif) | ≤ 60 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Leakage (IR) | ≤ 0.5 μA at VR = 5.0 V - enables low-power standby operation without significant quiescent loss |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - supports reliable anode-cathode conduction during forward-bias conditions |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard FR4 PCB |
| Temperature Coefficient (SZ) | +4.0 mV/K at IZ = 5 mA - indicates positive drift, critical for thermal stability in automotive ambient ranges |
| Package | SOD323 (SC-76) - ultra-compact 2-pin surface-mount footprint (1.35 × 1.75 mm) for high-density PCB layouts |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, lighting, and infotainment power rails |
| Hard breakdown knee | Sharp, well-defined Zener transition enables precise voltage clamping without soft saturation |
| Low dynamic impedance | 60 Ω at 5 mA supports stable regulation across varying load currents in feedback networks |
| Very low leakage current | 0.5 μA at 5.0 V minimizes parasitic loading in high-impedance reference paths |
| Small outline package | SOD323 footprint (1.35 × 1.75 mm) allows placement in space-constrained modules like ADAS sensors |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Biasing |
|---|---|
Use Scenario: Monitoring 12 V battery-derived supply in engine control unit to detect undervoltage/overvoltage faults. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 7.5 V threshold for comparator input. Use Value: ±2 % tolerance and +4.0 mV/K TC ensure fault detection accuracy remains within ±0.3 V across −40 °C to +125 °C ambient. |
Use Scenario: Generating precise bias voltage for analog front-end of pressure sensor in factory automation system. IC Role / Device Role / Timing Role: Low-leakage Zener reference replacing higher-cost voltage reference ICs in cost-sensitive designs. Use Value: 0.5 μA reverse leakage avoids loading high-impedance sensor bridge outputs, preserving measurement linearity. |
| USB-C Port Overvoltage Clamp | IoT Node Battery Protection Circuit |
Use Scenario: Clamping transient surges on USB-C VBUS line to protect downstream PMIC inputs. IC Role / Device Role / Timing Role: Fast-response shunt clamp activated during >7.6 V excursions. Use Value: Hard breakdown knee and 400 mW Ptot enable reliable energy absorption of short-duration 100 µs surges up to 3.5 A peak. |
Use Scenario: Regulating charging voltage threshold for Li-ion cell in wireless sensor node with coin-cell backup. IC Role / Device Role / Timing Role: Low-power Zener element setting cutoff point for charge controller enable signal. Use Value: 60 Ω rdif ensures <10 mV droop at 100 µA bias current, maintaining accurate 7.5 V trip point over battery discharge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V nominal, but ±5 % tolerance and 90 Ω rdif; SOT23 package (larger footprint) | Higher tolerance and impedance reduce accuracy in precision feedback loops | Select when cost priority outweighs regulation accuracy and board space is not constrained |
| MMSZ5235B | 7.5 V nominal, ±5 % tolerance, 30 Ω rdif, but not AEC-Q101 qualified; SOD-123 package | Lacks automotive qualification and has higher leakage (1.0 μA at 5 V) | Acceptable for industrial/commercial use where AEC-Q101 compliance is not mandated |
Compared with BZX84-C7V5 and MMSZ5235B, PDZ7.5B-QZ delivers tighter tolerance (±2 % vs ±5 %), lower leakage (0.5 μA vs ≥1.0 μA), and automotive qualification-making it the preferred choice for safety-critical voltage supervision in automotive ECUs and high-reliability industrial controllers.
Availability
PDZ7.5B-QZ is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and IoT battery management systems requiring stable component supply and long-term lifecycle support.
Supply support for PDZ7.5B-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 leading global semiconductor company specializing in high-performance, high-reliability discrete, logic, and MOSFET devices, headquartered in Nijmegen, Netherlands.
The PDZ-B-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for robust voltage reference and overvoltage protection in harsh-environment electronics such as powertrain and chassis control modules.
FAQ
What is the maximum reverse current the PDZ7.5B-QZ can handle during surge events?
The PDZ7.5B-QZ supports non-repetitive peak reverse current (IZSM) of 3.5 A at tp = 100 µs and Tamb = 25 °C, verified per IEC 60134 limiting values. This enables effective transient suppression in automotive load-dump and ISO 7637-2 pulse scenarios when used with appropriate series impedance.
Does PDZ7.5B-QZ require derating above 25 °C ambient temperature?
Yes-its total power dissipation must be linearly derated above 25 °C ambient, following the curve in Figure 1: Ptot decreases from 400 mW at 25 °C to zero at approximately 150 °C, with thermal resistance Rth(j-a) = 340 K/W on standard FR4 PCB.
How is cathode polarity identified on the PDZ7.5B-QZ package?
The cathode is marked by a visible bar on the top surface of the SOD323 package, aligned with Pin 1 per Table 2 and Figure 8. This marking corresponds to the cathode terminal (K), which must be connected to the higher-potential node in Zener regulation configuration.
Can PDZ7.5B-QZ replace older PDZ7.5B variants in existing designs?
Yes-PDZ7.5B-QZ is a direct replacement for PDZ7.5B with identical electrical specifications, improved AEC-Q101 qualification, and same SOD323 package dimensions and solder footprint (per Figures 9–10). No layout or schematic changes are required for drop-in migration.
PDZ7.5B-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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 4 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
PDZ7.5B-QZ FAQ
1.How can I place an order for PDZ7.5B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ7.5B-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 PDZ7.5B-QZ reliable?
The price and inventory of PDZ7.5B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ7.5B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ7.5B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ7.5B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ7.5B-QZ?
PDZ7.5B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ7.5B-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 PDZ7.5B-QZ?
For technical support, including PDZ7.5B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ7.5B-QZ requirements.
6.How does Aetrix verify that PDZ7.5B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ7.5B-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 PDZ7.5B-QZ meets industry standards.
7.What is the process for return or replacement of PDZ7.5B-QZ?
All PDZ7.5B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ7.5B-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 PDZ7.5B-QZ part is unused and in its original packaging.
Return procedure for PDZ7.5B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ7.5B-QZ Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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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
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
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