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Nexperia USA Inc. PDZ24B-QF
- Part No.:
- PDZ24B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ24B-QF.pdf
- Description:
- DIODE ZENER 24V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,097
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Product details
Overview
PDZ24B-QF from Nexperia is a single Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 24 V nominal working voltage with ±2 % tolerance, 120 Ω max differential resistance at IZ = 5 mA, and 0.05 μA max reverse leakage at VR = 19 V - used in automotive power rail clamping and low-power reference circuits.
For engineers reviewing the PDZ24B-QF datasheet, PDZ24B-QF pinout, PDZ24B-QF application, or PDZ24B-QF equivalent, this device supports AEC-Q101-compliant designs requiring stable 24 V Zener regulation, low thermal resistance (Rth(j-sp) = 130 K/W), and hard breakdown knee performance in space-constrained SMD layouts.
Technical Context
This Zener diode operates as a two-terminal voltage reference with cathode-anode polarity, optimized for reverse-bias regulation at IZ = 5 mA. Its 23.72 V to 24.78 V working voltage range (VZ) and temperature coefficient of +20.4 mV/K ensure predictable drift behavior across −65 °C to +150 °C junction temperatures.
It delivers 400 mW total power dissipation on FR4 PCB with standard footprint, supported by low dynamic impedance and <1.3 A non-repetitive peak reverse current capability. The SOD323 package enables high-density placement while maintaining thermal performance via solder-point conduction path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 24 V - precise regulation point for 24 V supply rail stabilization |
| VZ range | 23.72 V to 24.78 V at IZ = 5 mA - ±2 % tolerance ensures tight voltage control |
| rdif | ≤120 Ω - low dynamic impedance maintains regulation accuracy under load variation |
| IR | ≤0.05 μA at VR = 19 V - minimal leakage preserves battery-backed circuit integrity |
| Ptot | 400 mW at Tamb ≤ 25 °C - sufficient headroom for transient overvoltage absorption |
| Rth(j-sp) | 130 K/W - enables efficient heat transfer to PCB copper for sustained operation |
| AEC-Q101 | Qualified - certified for automotive-grade reliability in engine control and body electronics |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, ultra-compact footprint (1.35 mm × 0.8 mm × 0.45 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Negative terminal during Zener breakdown; marking bar identifies this pin for correct PCB orientation |
| 2 | Anode (A) | Positive terminal; connects to ground or lower-potential node in shunt regulation configuration |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Sharp, well-defined Zener transition enables clean voltage clamping without soft saturation |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD robustness per JESD47 |
| Low leakage current | 0.05 μA max at 19 V reverse bias preserves standby power in always-on modules |
| Small outline | SOD323 footprint saves >60 % board area vs. DO-35, enabling high-density power management |
| Stable temperature coefficient | +20.4 mV/K at IZ = 5 mA - predictable positive drift simplifies compensation in wide-temp designs |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver power input exposed to load dump transients. IC Role / Device Role / Timing Role: Shunt regulator protecting 24 V supply rail from >35 V spikes. Use Value: 24.78 V max VZ ensures clamping occurs before downstream IC damage threshold, while 130 K/W Rth(j-sp) prevents thermal runaway during 100 µs surges. |
Use Scenario: Precision reference for 24 V-powered analog sensor front-end with 12-bit ADC. IC Role / Device Role / Timing Role: Stable 24 V Zener reference replacing larger three-terminal regulators. Use Value: ±2 % VZ tolerance and 120 Ω rdif maintain <0.1 % reference error across 1–10 mA load current variation. |
| Telecom Power Sequencing | Medical Portable Device Battery Monitoring |
Use Scenario: Overvoltage protection for auxiliary 24 V DC-DC converter output feeding FPGA I/O banks. IC Role / Device Role / Timing Role: Fast-response Zener clamp activated within nanoseconds of overvoltage event. Use Value: Hard breakdown knee and 1.3 A IZSM rating absorb 100 µs surges without degradation, ensuring system-level fault containment. |
Use Scenario: Low-power voltage reference for coulomb counter monitoring Li-ion battery pack charged to 24 V nominal. IC Role / Device Role / Timing Role: Ultra-low-leakage (0.05 μA) Zener providing stable bias for current-sense amplifier. Use Value: Sub-microampere leakage extends battery life in multi-year portable deployments without compromising reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24 | Same 24 V nominal VZ, but ±5 % tolerance and higher rdif (≤200 Ω); SOT-23 package | Lacks AEC-Q101 qualification; suitable only for commercial-grade consumer products | Select when cost sensitivity outweighs automotive compliance and tighter regulation needs |
| MMSZ5242B | 24 V nominal VZ, ±5 % tolerance, 150 Ω rdif, 500 mW Ptot; SOD-123 package | Higher power rating but larger footprint and no automotive qualification | Prefer where higher surge energy absorption is required and board space permits larger package |
Compared with BZX84-C24 and MMSZ5242B, PDZ24B-QF provides superior voltage accuracy (±2 % vs. ±5 %), lower dynamic impedance, and guaranteed AEC-Q101 qualification - making it the only choice for safety-critical 24 V automotive regulation where long-term parametric stability and stress-test validation are mandatory.
Availability
PDZ24B-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, telecom power sequencing, and medical battery monitoring requiring stable component supply with full traceability and lifecycle continuity.
Supply support for PDZ24B-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 efficiency-driven, high-volume logic, discrete, and MOSFET solutions with leadership in automotive-qualified components.
PDZ24B-QF belongs to the PDZ-B-Q series - engineered specifically for AEC-Q101-compliant voltage regulation in space-constrained automotive and industrial systems demanding ±2 % accuracy and hard-knee Zener performance.
FAQ
What is the maximum reverse voltage (VR) at which PDZ24B-QF guarantees ≤0.05 μA leakage?
PDZ24B-QF guarantees ≤0.05 μA reverse leakage current at VR = 19 V, as specified in Table 8 of the datasheet. This value is measured at Tj = 25 °C and defines the upper limit of safe reverse bias before significant leakage begins - critical for low-power battery-backed circuits.
Can PDZ24B-QF be used in parallel for higher power dissipation?
No - Zener diodes must not be paralleled due to mismatched VZ tolerances (±2 %) and thermal runaway risk. Each PDZ24B-QF is rated for 400 mW on FR4 PCB; higher power requires a single higher-rated device or active regulation, not parallel connection.
Does the SOD323 package support reflow soldering per JEDEC J-STD-020?
Yes - the SOD323 package is qualified for lead-free reflow per JEDEC J-STD-020D. Figure 9 specifies the recommended solder land pattern (0.6 mm × 0.5 mm pads, 0.95 mm pitch), and thermal profile must respect peak temperature ≤260 °C for ≤30 seconds to avoid package damage.
How does the +20.4 mV/K temperature coefficient affect regulation in a −40 °C to +125 °C environment?
With +20.4 mV/K, VZ increases by ~3.3 V across 165 K temperature span - from ~23.5 V at −40 °C to ~26.8 V at +125 °C. System design must accommodate this full drift range in overvoltage protection margins and reference accuracy budgets.
PDZ24B-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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 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
PDZ24B-QF FAQ
1.How can I place an order for PDZ24B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ24B-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 PDZ24B-QF reliable?
The price and inventory of PDZ24B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ24B-QF is usually 5 days.
3.What payment methods are accepted for PDZ24B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ24B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ24B-QF?
PDZ24B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ24B-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 PDZ24B-QF?
For technical support, including PDZ24B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ24B-QF requirements.
6.How does Aetrix verify that PDZ24B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ24B-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 PDZ24B-QF meets industry standards.
7.What is the process for return or replacement of PDZ24B-QF?
All PDZ24B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ24B-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 PDZ24B-QF part is unused and in its original packaging.
Return procedure for PDZ24B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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