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Nexperia USA Inc. PDZ30B-QF
- Part No.:
- PDZ30B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ30B-QF.pdf
- Description:
- DIODE ZENER 30V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,753
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Product details
Overview
PDZ30B-QF from Nexperia is a single silicon Zener diode designed for precision voltage regulation in low-power circuits, with a nominal Zener voltage of 30 V at 5 mA, ±2 % tolerance, 400 mW total power dissipation, and SOD323 (SC-76) surface-mount package - used in automotive ECU power rail clamping and sensor reference stabilization.
For engineers reviewing the PDZ30B-QF datasheet, PDZ30B-QF pinout, PDZ30B-QF application, or PDZ30B-QF equivalent, this device supports stable 30 V regulation under transient overvoltage conditions, offers low leakage (<0.05 µA at VR = 23 V), hard breakdown knee, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its cathode-anode terminals. Its 29.19 V to 30.69 V working voltage range at IZ = 5 mA, 200 Ω maximum differential resistance, and −26.6 mV/K temperature coefficient enable predictable regulation in ambient temperatures up to +150 °C junction.
Thermal resistance from junction to solder point is 130 K/W, and junction-to-ambient is 340 K/W on FR4 PCB - defining derating behavior above 25 °C ambient. Non-repetitive peak reverse current capability is 1.0 A (tp = 100 µs), supporting surge suppression in 12 V/24 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.19 V to 30.69 V at IZ = 5 mA - defines precise clamping threshold for 30 V nominal rails |
| Differential Resistance (rdif) | ≤ 200 Ω at IZ = 0.5 mA - ensures minimal voltage shift under load variation |
| Reverse Leakage (IR) | ≤ 0.05 µA at VR = 23 V - enables ultra-low standby power in always-on circuits |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - sets thermal design margin for SOD323 footprint on FR4 |
| Temperature Coefficient (SZ) | −23.0 to −26.6 mV/K at IZ = 5 mA - quantifies voltage drift per °C for stability-critical references |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - confirms low-loss forward conduction during polarity checks or fault paths |
| Package | SOD323 (SC-76) - 1.35 mm × 0.8 mm footprint optimized for high-density automotive PCB layouts |
Pinout & Package
SOD323 plastic surface-mounted package with 2 leads; marking bar indicates cathode terminal. Device mounted on FR4 PCB with standard reflow footprint per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener breakdown |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes bias path for controlled conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| Hard breakdown knee | Sharp, well-defined Zener transition minimizes regulation uncertainty near VZ |
| Low dynamic impedance | 200 Ω max at low current ensures stable reference under light-load conditions |
| Very low leakage | 0.05 µA max at 23 V enables use in battery-backed or ultra-low-power monitoring circuits |
| ±2 % voltage tolerance | Tight initial accuracy reduces need for post-production trimming in production calibration |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Reference Stabilization |
|---|---|
|
Use Scenario: Protecting microcontroller supply inputs against load-dump transients in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener clamp placed between VCC and GND to shunt excess energy above 30 V, limiting voltage seen by downstream logic. Use Value: Withstands 1.0 A non-repetitive surge (100 µs), maintains <0.05 µA leakage at 23 V, and holds ±2 % tolerance across temperature - ensuring robust fail-safe operation. |
Use Scenario: Providing stable 30 V reference for analog front-end circuitry in pressure or temperature transducers. IC Role / Device Role / Timing Role: Reverse-biased Zener supplying fixed bias to op-amp reference inputs or ADC voltage dividers. Use Value: Low 200 Ω differential resistance and −26.6 mV/K tempco allow predictable drift compensation; SOD323 size fits compact sensor modules. |
| USB-C Port Overvoltage Protection | Smart Meter Voltage Monitoring |
|
Use Scenario: Secondary overvoltage clamp on USB-C VBUS line after primary TVS, handling residual spikes beyond 20 V. IC Role / Device Role / Timing Role: Precision Zener referenced to system ground, triggered only above 29.19 V to avoid false triggering during normal 20 V PD negotiation. Use Value: Hard breakdown knee and tight 2 % tolerance ensure clean activation threshold; 400 mW rating supports sustained clamping during extended surges. |
Use Scenario: Calibration reference in polyphase electricity meters requiring long-term voltage accuracy under varying ambient conditions. IC Role / Device Role / Timing Role: Zener-based reference generator feeding metrology ADCs and isolated voltage sensing circuits. Use Value: AEC-Q101 qualification ensures lifecycle reliability over 15+ years; low leakage preserves measurement integrity in high-impedance divider networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C30 | Same 30 V nominal, ±5 % tolerance, 300 mW Ptot, SOT23 package | Larger footprint, higher leakage (≤ 0.1 µA), no AEC-Q101 qualification | Select when cost sensitivity outweighs automotive compliance or tighter tolerance needs |
| MMSZ5257ET1G | 30 V nominal, ±5 %, 500 mW Ptot, SOD123 package | Higher power but larger size (3.7 mm × 1.6 mm), 10× higher leakage (≤ 0.5 µA) | Choose where thermal margin > 400 mW is required and board space permits larger footprint |
Compared with BZX84-C30 and MMSZ5257ET1G, PDZ30B-QF delivers tighter ±2 % tolerance, lower leakage, AEC-Q101 qualification, and smaller SOD323 footprint - making it optimal for space-constrained, high-reliability automotive and industrial voltage reference designs.
Availability
PDZ30B-QF is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference stabilization, USB-C overvoltage clamping, and smart meter voltage monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for PDZ30B-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 specializing in high-performance, reliable discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ-B-Q series belongs to Nexperia's automotive-grade Zener diode portfolio, engineered specifically for precision voltage regulation and transient suppression in harsh-environment electronic control units and sensor interfaces.
FAQ
What is the maximum continuous reverse current the PDZ30B-QF can handle?
The PDZ30B-QF does not specify a maximum continuous reverse (Zener) current; instead, its safe operating limit is defined by power dissipation. At 25 °C ambient, it supports up to 400 mW - corresponding to ~13.3 mA at 30 V. Derating applies above 25 °C per the 130 K/W junction-to-solder-point thermal resistance.
Is the PDZ30B-QF suitable for bidirectional transient protection?
No - PDZ30B-QF is a unidirectional Zener diode with cathode/anode polarity. It conducts only in reverse breakdown (cathode positive relative to anode). For bidirectional protection, a pair of anti-parallel Zeners or a dedicated TVS diode such as PESD5V0S1BA must be used.
How does the −26.6 mV/K temperature coefficient affect circuit performance?
A negative temperature coefficient means VZ decreases as junction temperature rises. At IZ = 5 mA, VZ drops ~26.6 mV per °C increase - e.g., a 50 °C rise reduces regulation voltage by ~1.33 V. This must be compensated in high-accuracy references via circuit topology or calibration.
Can PDZ30B-QF replace PDZ30B in existing designs?
Yes - PDZ30B-QF is the AEC-Q101-qualified variant of PDZ30B, sharing identical electrical characteristics, SOD323 package, and marking code "ZS". The "-QF" suffix denotes automotive qualification; no layout or schematic changes are needed for drop-in replacement in new or legacy automotive designs.
PDZ30B-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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23 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
PDZ30B-QF FAQ
1.How can I place an order for PDZ30B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ30B-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 PDZ30B-QF reliable?
The price and inventory of PDZ30B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ30B-QF is usually 5 days.
3.What payment methods are accepted for PDZ30B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ30B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ30B-QF?
PDZ30B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ30B-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 PDZ30B-QF?
For technical support, including PDZ30B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ30B-QF requirements.
6.How does Aetrix verify that PDZ30B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ30B-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 PDZ30B-QF meets industry standards.
7.What is the process for return or replacement of PDZ30B-QF?
All PDZ30B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ30B-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 PDZ30B-QF part is unused and in its original packaging.
Return procedure for PDZ30B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ30B-QF Tags
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