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Nexperia USA Inc. PDZ2.4B-QF
- Part No.:
- PDZ2.4B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ2.4B-QF.pdf
- Description:
- DIODE ZENER 2.4V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,945
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Product details
Overview
PDZ2.4B-QF from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in space-constrained SMD applications, with nominal Zener voltage 2.43 V to 2.63 V at IZ = 5 mA, ±2 % tolerance, 400 mW total power dissipation, and qualified per AEC-Q101 for automotive use.
For engineers reviewing the PDZ2.4B-QF datasheet, PDZ2.4B-QF pinout, PDZ2.4B-QF application, or PDZ2.4B-QF equivalent, this device serves as a precision shunt regulator in bias networks, reference circuits, and overvoltage protection where stable low-voltage clamping at 2.4 V and minimal temperature drift (−1.6 mV/K) are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode-anode terminals under controlled current conditions. Its hard breakdown knee and low dynamic impedance (≤1000 Ω at IZ = 0.5 mA) ensure predictable regulation even at low bias currents.
Thermal performance is defined by Rth(j-sp) = 130 K/W (junction-to-solder point) and Rth(j-a) = 340 K/W on FR4 PCB, enabling reliable operation up to Tj = +150 °C and Tstg = −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.43 V to 2.63 V at IZ = 5 mA - defines precise clamping threshold for 2.4 V nominal regulation |
| Tolerance | ±2 % - ensures tight voltage consistency across production lots without post-assembly trimming |
| Dynamic Resistance rdif | ≤1000 Ω at IZ = 0.5 mA - maintains low output impedance for stable regulation under light load |
| Reverse Current IR | ≤50 μA at VR = 1.0 V - guarantees minimal leakage in standby or high-impedance bias networks |
| Temperature Coefficient SZ | −1.6 mV/K at IZ = 5 mA - enables predictable, negative drift compensation in temperature-sensitive references |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - supports bidirectional protection or dual-use in clamp-and-bias configurations |
| Non-repetitive Peak Current IZSM | 8.0 A for tp = 100 μs - provides transient surge immunity in automotive ESD/overvoltage events |
Pinout & Package
PDZ2.4B-QF is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode identified by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, temperature cycling, and HAST |
| Low-leakage regulation | IR ≤ 50 μA at VR = 1.0 V enables use in battery-powered sensor biasing without significant drain |
| Hard breakdown knee | Sharp, well-defined Zener transition improves regulation accuracy at low IZ (0.5–5 mA) |
| Small-footprint SMD | SOD323 package allows placement in dense PCB layouts typical of ADAS camera modules and body control units |
| Stable temperature coefficient | SZ = −1.6 mV/K permits predictable drift modeling in automotive ambient ranges (−40 °C to +125 °C) |
Applications
| Automotive Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 2.4 V reference for analog front-end amplifiers in tire pressure monitoring systems (TPMS). IC Role / Device Role / Timing Role: Shunt voltage reference regulating bias current for op-amp input stages. Use Value: Enables accurate pressure transduction over −40 °C to +105 °C ambient with <±2 % output variation and no external trimming. |
Use Scenario: Clamping USB VBUS line against ESD-induced surges in portable infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance (450 pF) Zener clamp placed between VBUS and GND to limit transient overshoot. Use Value: Absorbs 8.0 A non-repetitive surges per IEC 61000-4-2 Level 4 while maintaining <1.0 V clamping voltage at 1 A. |
| Industrial PLC Input Protection | Low-Power MCU Reset Circuit |
|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from field-wiring transients. IC Role / Device Role / Timing Role: Series Zener limiter in combination with current-limiting resistor to clamp input to safe logic levels. Use Value: Limits input voltage to ≤2.63 V during fault conditions, preventing damage to downstream 3.3 V microcontroller GPIOs. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ microcontrollers in smart lighting nodes. IC Role / Device Role / Timing Role: Zener-based RC reset generator where VZ sets threshold for reset deassertion timing. Use Value: Delivers repeatable 2.43–2.63 V trip point with −1.6 mV/K drift, ensuring deterministic reset release across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V4 | Same SOD323 package, ±2 % tolerance, but higher rdif (1200 Ω @ 5 mA) and no AEC-Q101 qualification | Limited to commercial-grade consumer electronics; not validated for automotive thermal cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification requirements and tighter dynamic impedance is not critical |
| MMSZ4678T1G | Higher VZ (2.45 V min), wider tolerance (±5 %), and higher leakage (≤100 μA @ 1 V) | Suitable for general-purpose clamping but lacks the low-drift stability needed for precision biasing | Prefer for non-critical voltage limiting where ±5 % tolerance and higher IR are acceptable |
Compared with BZX384-B2V4 and MMSZ4678T1G, PDZ2.4B-QF delivers superior regulation accuracy (±2 %), lower dynamic impedance, and automotive-grade reliability-making it optimal for safety-aware or thermally demanding designs where reference stability is essential.
Availability
PDZ2.4B-QF is available at Aetrix Electronics and suitable for automotive sensor modules, USB interface protection, industrial PLC inputs, and low-power MCU reset circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PDZ2.4B-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ2.4B-QF belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in automotive electronics, including ADAS, body control, and powertrain subsystems.
FAQ
What is the maximum continuous reverse current rating for PDZ2.4B-QF?
The PDZ2.4B-QF has no specified continuous reverse current rating because it is designed for regulated Zener operation-not continuous conduction. Its limiting value is total power dissipation (400 mW at Tamb ≤ 25 °C), which translates to a maximum steady-state Zener current of approximately 150 mA at VZ ≈ 2.5 V. Operation beyond this requires derating per the power derating curve in Figure 1.
Can PDZ2.4B-QF be used in forward-biased configuration?
Yes-PDZ2.4B-QF exhibits a forward voltage ≤0.9 V at 10 mA, making it usable as a low-drop rectifier or ESD protection diode in series with signal lines. However, its primary design intent and characterization are for reverse-biased Zener regulation; forward conduction capability is secondary and not optimized for high-current switching.
How does the −1.6 mV/K temperature coefficient impact circuit design?
The negative temperature coefficient means VZ decreases by 1.6 mV per degree Celsius rise in junction temperature. In a 2.4 V reference, this yields ~−0.067 %/°C drift-critical for high-accuracy sensor biasing. Designers must either compensate via complementary components or constrain ambient/junction temperature range to maintain system-level accuracy within specification.
Is the SOD323 footprint compatible with standard reflow soldering processes?
Yes-the SOD323 package uses industry-standard reflow land pattern dimensions (0.6 mm pad width × 1.65 mm length, 0.5 mm spacing), fully compliant with IPC-7351B. The recommended reflow profile follows JEDEC J-STD-020, with peak temperature ≤260 °C and time above liquidus ≤60 seconds, matching standard lead-free assembly lines.
PDZ2.4B-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:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 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
PDZ2.4B-QF FAQ
1.How can I place an order for PDZ2.4B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ2.4B-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 PDZ2.4B-QF reliable?
The price and inventory of PDZ2.4B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ2.4B-QF is usually 5 days.
3.What payment methods are accepted for PDZ2.4B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ2.4B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ2.4B-QF?
PDZ2.4B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ2.4B-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 PDZ2.4B-QF?
For technical support, including PDZ2.4B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ2.4B-QF requirements.
6.How does Aetrix verify that PDZ2.4B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ2.4B-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 PDZ2.4B-QF meets industry standards.
7.What is the process for return or replacement of PDZ2.4B-QF?
All PDZ2.4B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ2.4B-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 PDZ2.4B-QF part is unused and in its original packaging.
Return procedure for PDZ2.4B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ2.4B-QF Tags
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