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Nexperia USA Inc. PDZ7.5B-QX
- Part No.:
- PDZ7.5B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ7.5B-QX.pdf
- Description:
- DIODE ZENER 7.5V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,441
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Product details
Overview
PDZ7.5B-QX from Nexperia is a single Zener diode designed for precision low-voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 7.5 V (min 7.28 V, max 7.60 V at IZ = 5 mA), ±2 % tolerance, 60 Ω typical differential resistance, and 0.5 μA maximum reverse leakage at VR = 6.0 V - used in automotive body control modules for ECU reference voltage stabilization.
For engineers reviewing the PDZ7.5B-QX datasheet, PDZ7.5B-QX pinout, PDZ7.5B-QX application, or PDZ7.5B-QX equivalent, key selection criteria include Zener voltage accuracy at 5 mA, low dynamic impedance under light-load conditions, AEC-Q101 qualification status, thermal resistance to solder point (130 K/W), and SOD323 package compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across variable load currents by conducting reverse current above its specified breakdown threshold. Its hard breakdown knee and low leakage (<0.5 μA at 6.0 V) enable accurate biasing in low-power analog circuits without significant quiescent loss.
The diode exhibits a positive temperature coefficient of +4.0 mV/K at IZ = 5 mA, supporting predictable drift behavior in temperature-varying environments. Thermal performance is defined relative to an FR4 PCB with single-sided copper (Rth(j-sp) = 130 K/W), enabling reliable derating 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 regulation window for 7.5 V nominal reference |
| Differential Resistance rdif | 60 Ω typical - ensures minimal output voltage shift under ±1 mA load variation |
| Reverse Leakage IR | ≤ 0.5 μA at VR = 6.0 V - preserves signal integrity in high-impedance sensing nodes |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive PCB footprints |
| Thermal Resistance Rth(j-sp) | 130 K/W - enables direct thermal path to solder joint for effective heat transfer on FR4 |
| Forward Voltage VF | 0.9 V at IF = 10 mA - allows use as polarity protection diode in dual-role designs |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability per stress test qualification for discrete semiconductors |
Pinout & Package
PDZ7.5B-QX is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to circuit ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low Dynamic Impedance | 60 Ω typical at IZ = 5 mA - delivers tight voltage regulation under varying load conditions |
| Hard Breakdown Knee | Sharp transition from non-conduction to full Zener conduction - improves turn-on predictability in feedback loops |
| AEC-Q101 Qualification | Qualified for automotive applications - meets vibration, temperature cycling, and HBM ESD requirements |
| SOD323 Footprint | Standardized 1.8 mm × 1.35 mm outline - compatible with automated placement and reflow processes |
| Low Leakage Current | ≤ 0.5 μA at 6.0 V reverse bias - minimizes parasitic loading in battery-powered sensor interfaces |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Stabilizing 7.5 V reference for microcontroller ADC inputs and CAN transceiver bias rails in door module ECUs. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise, low-drift DC reference independent of supply fluctuations. Use Value: Enables <±0.5% measurement accuracy over −40 °C to +125 °C ambient due to +4.0 mV/K tempco and AEC-Q101 robustness. |
Use Scenario: Biasing op-amp input stages and setting thresholds in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Precision voltage clamp establishing fixed reference point for analog front-end gain calibration. Use Value: Maintains regulation stability with <10 mV deviation across 100 μA–5 mA load range, critical for sub-12-bit linearity. |
| USB-C Power Delivery Monitor | Smart Home IoT Node Voltage Reference |
|
Use Scenario: Providing 7.5 V reference for voltage supervisor ICs monitoring VBUS during USB-C negotiation sequences. IC Role / Device Role / Timing Role: Low-leakage Zener clamping node ensuring accurate undervoltage lockout (UVLO) triggering. Use Value: Delivers <0.5 μA leakage at 6.0 V, preventing false UVLO trips during low-power suspend states. |
Use Scenario: Generating stable bias for RF power amplifier biasing and MCU brown-out detection in battery-operated Zigbee modules. IC Role / Device Role / Timing Role: Compact shunt regulator supplying clean reference to internal LDO and reset circuitry. Use Value: Fits within 1.8 mm × 1.35 mm footprint while sustaining 400 mW dissipation margin for intermittent peak loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V nominal, but ±5 % tolerance and higher rdif (90 Ω typ); not AEC-Q101 qualified | Limited to commercial-grade consumer electronics; unsuitable for automotive BCU deployment | Select only if cost sensitivity outweighs voltage accuracy and automotive compliance requirements |
| MMSZ5235B | 7.5 V nominal, ±5 % tolerance, 350 mW rating, Rth(j-a) = 450 K/W - inferior thermal performance | Requires larger PCB area for thermal management; not rated for automotive temperature extremes | Preferable only when legacy MMSZ footprint compatibility is mandatory and ambient stays below 85 °C |
Compared with BZX84-C7V5 and MMSZ5235B, PDZ7.5B-QX offers tighter voltage tolerance (±2 % vs ±5 %), lower dynamic impedance (60 Ω vs ≥90 Ω), AEC-Q101 qualification, and superior thermal resistance to solder point (130 K/W), making it the optimal choice for automotive and high-reliability industrial regulation.
Availability
PDZ7.5B-QX is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor signal conditioning, USB-C power delivery monitors, and smart home IoT node voltage references requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PDZ7.5B-QX 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 manufacturer specializing in high-performance, high-reliability discrete and logic devices, with core expertise in automotive-qualified components and energy-efficient solutions.
PDZ7.5B-QX belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for precision voltage regulation in automotive electronics and industrial control systems where compact size, low leakage, and thermal resilience are critical.
FAQ
What is the maximum reverse current IZSM rating for PDZ7.5B-QX?
The non-repetitive peak reverse current is 3.5 A at tp = 100 μs, square wave, with ambient temperature at 25 °C prior to surge. This rating supports transient overvoltage suppression in automotive load-dump scenarios when used with appropriate series limiting resistance.
Does PDZ7.5B-QX have a marked cathode, and how is it identified?
Yes - the cathode is marked with a visible bar on the top surface of the SOD323 package. Pin 1 (cathode) aligns with this marking bar, and the anode (Pin 2) is unmarked. This orientation is confirmed in the official Nexperia package outline diagram (Fig. 8).
Can PDZ7.5B-QX be used in place of PDZ7.5B without the '-QX' suffix?
No - PDZ7.5B-QX is the AEC-Q101-qualified version with enhanced process controls and automotive-specific testing. The base PDZ7.5B lacks AEC-Q101 certification and is intended for commercial applications only; substitution requires formal qualification review.
What is the forward voltage drop at 100 mA, and is it relevant for Zener operation?
The forward voltage is 1.1 V at IF = 100 mA (pulse test). While not used in forward conduction during regulation, this parameter matters when the device serves dual roles - e.g., as reverse-polarity protection in series with the Zener path - ensuring minimal forward loss during fault conditions.
PDZ7.5B-QX 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-QX FAQ
1.How can I place an order for PDZ7.5B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ7.5B-QX 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-QX reliable?
The price and inventory of PDZ7.5B-QX 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-QX is usually 5 days.
3.What payment methods are accepted for PDZ7.5B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ7.5B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ7.5B-QX?
PDZ7.5B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ7.5B-QX 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-QX?
For technical support, including PDZ7.5B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ7.5B-QX requirements.
6.How does Aetrix verify that PDZ7.5B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ7.5B-QX 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-QX meets industry standards.
7.What is the process for return or replacement of PDZ7.5B-QX?
All PDZ7.5B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ7.5B-QX, 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-QX part is unused and in its original packaging.
Return procedure for PDZ7.5B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ7.5B-QX Tags
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