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Nexperia USA Inc. PZU84-B24-QR
- Part No.:
- PZU84-B24-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B24-QR.pdf
- Description:
- DIODE ZENER 24.25V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,298
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Product details
Overview
PZU84-B24-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 24 V nominal breakdown voltage (22.93 V min / 25.57 V max), 120 Ω differential resistance at 5 mA, and 19 mV/K temperature coefficient - used for precision voltage reference and overvoltage clamping in automotive power rails.
For engineers reviewing the PZU84-B24-QR datasheet, PZU84-B24-QR pinout, PZU84-B24-QR application, or PZU84-B24-QR equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data (330 K/W junction-to-solder-point), and validated automotive-grade use cases without generic claims.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with hard knee characteristics, optimized for stable regulation under low-current conditions (IZ = 5 mA). Its 24 V nominal Zener voltage targets mid-range automotive supply monitoring and ECU reference circuits where tight tolerance and low dynamic impedance are critical.
Designed per AEC-Q101, it supports ambient temperatures from −55 °C to +150 °C and features intentional leakage current control for noise reduction in sensitive analog subsystems - distinct from the lower-leakage PZU84-B5V1-Q to -C10-Q variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal; 22.93 V min / 25.57 V max at IZ = 5 mA - defines precise clamping threshold for 24 V system protection |
| Differential Resistance (rdif) | 120 Ω max at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Temperature Coefficient (SZ) | +19 mV/K - enables predictable drift compensation in wide-temperature automotive environments |
| Reverse Current (IR) | 0.05 μA max at VR = 19 V - guarantees ultra-low standby power loss in always-on circuits |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling capability |
| Junction-to-Solder-Point Rth(j-sp) | 330 K/W - determines thermal rise above solder point under steady-state operation |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 μs square wave - supports transient surge suppression in load-dump events |
Pinout & Package
SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with three terminals; Pin 2 is internally not connected and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during regulation |
| 2 | Not Connected (n.c.) | No internal bond; must be left floating - no PCB trace or pad required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct replacement in high-accuracy 24 V reference designs without recalibration |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control modules and body electronics |
| Hard breakdown knee | Ensures sharp, repeatable turn-on behavior for reliable overvoltage detection and clamping |
| Optimized leakage for noise reduction | Intentional minor leakage improves high-frequency stability in analog sensor signal chains |
| Low capacitance (80 pF at 1 MHz) | Minimizes signal distortion in high-speed interface protection circuits |
Applications
| Engine Control Unit Reference | Automotive Infotainment Power Rail Clamp |
|---|---|
Use Scenario: Provides stable 24 V reference for ADC biasing and sensor excitation in engine management systems operating across −40 °C to +125 °C. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision analog ground reference point. Use Value: ±2 % tolerance and +19 mV/K TC ensure <±1.2 % total error over full temperature range, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Clamps 24 V supply rail against load-dump transients in head unit power distribution networks. IC Role / Device Role / Timing Role: Overvoltage protection device absorbing 40 W non-repetitive surges per ISO 7637-2 Pulse 5a. Use Value: 40 W peak power rating and 330 K/W junction-to-solder thermal path enable reliable single-device transient suppression without external heatsinking. |
| Body Control Module Voltage Monitor | ADAS Camera Module Bias Supply |
Use Scenario: Monitors battery voltage integrity in door module microcontrollers using regulated 24 V feedback loop. IC Role / Device Role / Timing Role: Precision voltage sensing element in resistive divider network feeding MCU ADC input. Use Value: 120 Ω differential resistance limits measurement error to <0.6 mV per 1 mA load change, preserving 12-bit ADC resolution. |
Use Scenario: Stabilizes bias voltage for CMOS image sensor analog front-end in surround-view camera systems. IC Role / Device Role / Timing Role: Low-noise voltage reference source for analog signal chain power domains. Use Value: Optimized leakage profile reduces broadband noise floor by >15 dB compared to standard Zeners, improving SNR in low-light imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24 | ±5 % tolerance, 250 Ω rdif, no AEC-Q101 qualification | General-purpose industrial use only; unsuitable for automotive production | Select when cost sensitivity outweighs automotive qualification and tighter regulation needs |
| MMSZ5245B | ±5 % tolerance, 30 Ω rdif at 20 mA, 500 mW Ptot, SOD-123 package | Higher power handling but larger footprint; lacks automotive qualification | Choose for higher-current regulation (>15 mA) where board space permits SOD-123 |
Compared with BZX84-C24 and MMSZ5245B, PZU84-B24-QR delivers superior voltage accuracy, lower dynamic impedance at typical operating currents (5 mA), and mandatory AEC-Q101 compliance - making it the sole qualified option for automotive 24 V reference and clamping functions requiring long-term reliability.
Availability
PZU84-B24-QR is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and body control modules requiring stable component supply with guaranteed AEC-Q101 conformance and full traceability.
Supply support for PZU84-B24-QR 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.
The PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for automotive voltage regulation, reference, and transient protection where precision, thermal robustness, and qualification assurance are mandatory.
FAQ
What is the maximum continuous reverse current for PZU84-B24-QR at 25 °C?
The maximum continuous reverse current is defined by its 250 mW total power dissipation limit. At 24 V Zener voltage, this corresponds to 10.4 mA (250 mW ÷ 24 V). Exceeding this current continuously risks thermal runaway due to the 330 K/W junction-to-solder thermal resistance.
Does PZU84-B24-QR require a heatsink for standard automotive operation?
No heatsink is required. With 330 K/W junction-to-solder thermal resistance and 250 mW power rating, the junction temperature rise is 82.5 K above solder point at full dissipation. On a standard FR4 PCB with tin-plated copper, this remains within the 150 °C absolute maximum junction temperature even at +85 °C ambient.
How does the "B" suffix in PZU84-B24-QR differ from "C" variants like PZU84-C24-QR?
The "B" suffix denotes ±2 % voltage tolerance and optimized low-current performance (hard knee, very low leakage), while "C" indicates approximately ±5 % tolerance and higher leakage for noise reduction. PZU84-B24-QR is specified for precision reference; PZU84-C24-QR targets fast-switching analog circuits.
Can PZU84-B24-QR replace older PZU84-B24-Q parts in existing designs?
Yes - PZU84-B24-QR is a qualified revision of the PZU84-B24-Q series with identical electrical specifications, package dimensions, and AEC-Q101 qualification. The "R" suffix indicates tape-and-reel packaging with enhanced moisture sensitivity level (MSL) control, compatible with standard SMT assembly processes.
PZU84-B24-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24.25 V
- Tolerance:
- ±2.19%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-B24-QR FAQ
1.How can I place an order for PZU84-B24-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B24-QR 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 PZU84-B24-QR reliable?
The price and inventory of PZU84-B24-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B24-QR is usually 5 days.
3.What payment methods are accepted for PZU84-B24-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B24-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B24-QR?
PZU84-B24-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B24-QR 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 PZU84-B24-QR?
For technical support, including PZU84-B24-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B24-QR requirements.
6.How does Aetrix verify that PZU84-B24-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-B24-QR 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 PZU84-B24-QR meets industry standards.
7.What is the process for return or replacement of PZU84-B24-QR?
All PZU84-B24-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B24-QR, 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 PZU84-B24-QR part is unused and in its original packaging.
Return procedure for PZU84-B24-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B24-QR Tags
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MM5Z5V1ST1G
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