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Nexperia USA Inc. PDZ24B-QX
- Part No.:
- PDZ24B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ24B-QX.pdf
- Description:
- DIODE ZENER 24V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,607
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Product details
Overview
PDZ24B-QX 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 current at VR = 19 V, used in automotive power rail clamping and low-power reference circuits.
For engineers reviewing the PDZ24B-QX datasheet, PDZ24B-QX pinout, PDZ24B-QX application, or PDZ24B-QX equivalent, this device supports AEC-Q101-compliant designs requiring stable 24 V Zener regulation, low leakage, hard breakdown knee, and surface-mount compatibility on FR4 PCBs with standard reflow footprints.
Technical Context
This Zener diode operates as a two-terminal voltage reference with sharp breakdown characteristics, optimized for low-current regulation (IZ = 5 mA typical), where its 23.72 V to 24.78 V working voltage range ensures tight tolerance under automotive ambient conditions up to +150 °C junction temperature.
Its thermal resistance of 130 K/W (junction-to-solder point) and 340 K/W (junction-to-ambient) enables reliable operation at ≤400 mW total power dissipation on standard FR4 PCBs, while the −20.4 mV/K temperature coefficient at IZ = 5 mA supports predictable drift compensation in feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 23.72 V to 24.78 V at IZ = 5 mA - defines precise clamping threshold for 24 V systems |
| Differential Resistance (rdif) | ≤120 Ω at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Current (IR) | ≤0.05 μA at VR = 19 V - guarantees ultra-low standby power loss in always-on circuits |
| Temperature Coefficient (SZ) | −20.4 mV/K at IZ = 5 mA - enables predictable thermal drift modeling in voltage references |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - supports efficient forward-bias use in protection or biasing paths |
| Non-repetitive Peak Reverse Current (IZSM) | 1.3 A at tp = 100 μs - provides transient overvoltage immunity without degradation |
| Package | SOD323 (SC-76) - 1.35 mm × 1.75 mm footprint compatible with high-density automotive PCB layouts |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with cathode-indicating marking bar; compact 2-pin outline optimized for automated placement and reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Hard breakdown knee | Sharp, well-defined Zener transition minimizes regulation hysteresis in feedback loops |
| Low dynamic impedance | 120 Ω max at 5 mA enables stable reference performance even with varying source impedance |
| Ultra-low leakage | 0.05 μA max at 19 V supports battery-backed or energy-harvesting applications |
| Thermal stability | −20.4 mV/K coefficient allows accurate drift compensation in wide-temperature environments |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 24 V supply rail transients in door module ECUs exposed to load dump events. IC Role / Device Role / Timing Role: Zener-based overvoltage clamp protecting downstream LDOs and microcontrollers. Use Value: Withstands 1.3 A non-repetitive surge and maintains <0.05 μA leakage to avoid battery drain during sleep mode. |
Use Scenario: Providing stable 24 V reference for 4–20 mA transmitter loop power supplies. IC Role / Device Role / Timing Role: Precision shunt regulator establishing accurate excitation voltage for bridge sensors. Use Value: 120 Ω differential resistance and ±2 % tolerance ensure <0.5 % total error in calibrated analog outputs. |
| Telecom Power Management | Medical Diagnostic Equipment |
Use Scenario: Regulating auxiliary 24 V bias for optical transceiver TIA amplifiers. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing gain-setting nodes in RF front-ends. Use Value: Hard breakdown knee and −20.4 mV/K coefficient minimize signal distortion across −40 °C to +85 °C operating range. |
Use Scenario: Supplying isolated 24 V reference for patient-monitoring analog front-end calibration. IC Role / Device Role / Timing Role: Safety-critical shunt regulator ensuring traceable voltage accuracy in Class II medical devices. Use Value: AEC-Q101 qualification and 150 °C max junction temperature support long-term reliability in sealed enclosures. |
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 | ±5 % tolerance, 220 Ω rdif, no AEC-Q101 qualification | General-purpose industrial use only; unsuitable for automotive safety-critical rails | Select when cost sensitivity outweighs precision and automotive compliance requirements |
| MMSZ5242B | SOD-123 package (larger footprint), ±5 % tolerance, 150 Ω rdif, 100 nA IR | Compatible with legacy board layouts but lacks AEC-Q101 validation and thermal performance | Choose only if SOD-123 footprint is fixed and automotive qualification is not required |
Compared with BZX84-C24 and MMSZ5242B, PDZ24B-QX delivers tighter ±2 % tolerance, lower 120 Ω dynamic impedance, and certified AEC-Q101 reliability-making it the sole option for automotive 24 V rail clamping where long-term stability and transient immunity are mandatory.
Availability
PDZ24B-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, telecom power supervisors, and medical diagnostic equipment requiring stable component supply with full traceability and lifecycle continuity.
Supply support for PDZ24B-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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
PDZ-B-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for automotive voltage regulation and clamping applications demanding precision, low leakage, and rugged thermal performance.
FAQ
What is the maximum continuous power dissipation for PDZ24B-QX?
PDZ24B-QX has a maximum total power dissipation of 400 mW at Tamb ≤ 25 °C on an FR4 PCB with single-sided copper and standard footprint. Derating is required above 25 °C per the published curve, reaching zero dissipation at approximately 150 °C ambient.
How is polarity identified on the PDZ24B-QX package?
The cathode (K) is marked by a visible bar on the SOD323 package body; Pin 1 (cathode) is located adjacent to this bar, while Pin 2 (anode) is unmarked. This matches the standardized pinning diagram in Nexperia's datasheet Figure 8.
Does PDZ24B-QX support wave soldering?
Yes-Nexperia provides a dedicated wave soldering footprint (Figure 10) with 1.2 mm × 2.75 mm solder lands and defined transport direction. The SOD323 package is qualified for both reflow and wave processes per JEDEC J-STD-020 and J-STD-006 standards.
What is the reverse voltage rating before breakdown begins?
PDZ24B-QX exhibits ≤0.05 μA reverse current at VR = 19 V, meaning significant conduction begins near its specified 23.72 V minimum Zener voltage. Its rated non-repetitive peak reverse voltage is not separately defined-it is governed by the 1.3 A IZSM surge limit at 100 μs pulse width.
PDZ24B-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):
- 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-QX FAQ
1.How can I place an order for PDZ24B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ24B-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 PDZ24B-QX reliable?
The price and inventory of PDZ24B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ24B-QX is usually 5 days.
3.What payment methods are accepted for PDZ24B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ24B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ24B-QX?
PDZ24B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ24B-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 PDZ24B-QX?
For technical support, including PDZ24B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ24B-QX requirements.
6.How does Aetrix verify that PDZ24B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ24B-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 PDZ24B-QX meets industry standards.
7.What is the process for return or replacement of PDZ24B-QX?
All PDZ24B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ24B-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 PDZ24B-QX part is unused and in its original packaging.
Return procedure for PDZ24B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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