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Nexperia USA Inc. PZU84-C4V7-QR
- Part No.:
- PZU84-C4V7-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C4V7-QR.pdf
- Description:
- DIODE ZENER 4.66V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,927
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Product details
Overview
PZU84-C4V7-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 4.42 V to 4.90 V nominal breakdown at IZ = 5 mA, with 800 Ω differential resistance, 0.2 μA reverse current at VR = 0 V, and AEC-Q101 qualification for automotive power rail stabilization.
For engineers reviewing the PZU84-C4V7-QR datasheet, PZU84-C4V7-QR pinout, PZU84-C4V7-QR application, or PZU84-C4V7-QR equivalent, this device serves as a precision low-current reference and overvoltage clamp in engine control units, infotainment power supplies, and ADAS sensor bias networks where stable 4.7 V regulation under transient load is required.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable reference voltage across its cathode-anode terminals. Its hard breakdown knee and low leakage (≤0.2 μA at 0 V) enable clean voltage clamping without parasitic conduction during standby.
Designed for automotive-grade reliability, it delivers consistent regulation from −55 °C to +150 °C ambient, with thermal resistance from junction to solder point of 330 K/W and non-repetitive surge capability up to 40 W for 100 μs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.42 V to 4.90 V at IZ = 5 mA - defines precise regulation window for 4.7 V nominal rail |
| Differential Resistance (rdif) | 800 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤0.2 μA at VR = 0 V - ensures minimal standby power loss in always-on circuits |
| Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-sp)) | 330 K/W - quantifies heat transfer efficiency from die to cathode solder point |
| Non-repetitive Surge (PZSM) | 40 W for tp = 100 μs - enables transient overvoltage suppression in CAN/LIN bus protection |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, 3-terminal configuration with anode (Pin 1), not-connected (Pin 2), and cathode (Pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in reverse-regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or thermal pad connection |
| 3 | Cathode (K) | Regulated output node; ties to supply rail being stabilized and provides thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tight 4.7 V reference without post-production trimming in safety-critical ECUs |
| Hard breakdown knee | Ensures sharp, predictable turn-on at VZ for reliable overvoltage clamping in 12 V systems |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock |
| Low 0.2 μA leakage at 0 V | Minimizes quiescent current draw in battery-backed modules and sleep-mode circuits |
| 800 Ω dynamic impedance at 5 mA | Provides stable regulation under light-load conditions typical in sensor interface biasing |
Applications
| Engine Control Unit (ECU) Reference | Infotainment Power Sequencing |
|---|---|
|
Use Scenario: Providing stable 4.7 V reference for analog-to-digital converters monitoring throttle position and oxygen sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision bias point for signal conditioning circuitry. Use Value: Maintains ADC accuracy across −40 °C to +125 °C ambient with ≤0.5 % drift due to tight ±2 % VZ tolerance and low temperature coefficient. |
Use Scenario: Clamping 5 V rail during hot-swap insertion of USB peripherals in head unit power domain. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting overshoot during connector mating-induced inrush. Use Value: Absorbs 40 W non-repetitive surges within 100 μs without degradation, preventing downstream LDO latch-up. |
| ADAS Camera Bias Network | Body Control Module (BCM) Wake-Up Circuit |
|
Use Scenario: Generating stable bias voltage for CMOS image sensor analog front-end in surround-view camera module. IC Role / Device Role / Timing Role: Low-noise Zener regulator supplying clean 4.7 V to sensor pixel array and column amplifiers. Use Value: Delivers <0.2 μA leakage and hard-knee breakdown to eliminate noise coupling into high-gain imaging paths. |
Use Scenario: Enabling wake-on-LIN functionality by holding microcontroller reset line at precise 4.7 V until valid bus activity occurs. IC Role / Device Role / Timing Role: Precision voltage threshold detector defining LIN transceiver activation threshold. Use Value: Guarantees deterministic wake-up at exactly 4.7 V ±2 %, eliminating false triggers from supply ripple or temperature drift. |
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-C4V7,115 | Same SOT23 package and 4.7 V rating, but ±5 % tolerance and higher 1.0 μA leakage at 0 V | Acceptable for non-automotive consumer power rails where cost is prioritized over precision | Select when AEC-Q101 qualification and sub-0.5 μA leakage are not required |
| MMSZ4704T1G | 4.7 V ±5 %, 1000 Ω rdif, 1.0 μA leakage, qualified to AEC-Q101 but with higher thermal resistance (400 K/W) | Suitable for space-constrained industrial controls where moderate regulation stability suffices | Choose only if board-level thermal management allows higher junction rise under 250 mW load |
Compared with BZX84-C4V7,115 and MMSZ4704T1G, PZU84-C4V7-QR offers tighter ±2 % tolerance, lower 0.2 μA leakage, and superior 330 K/W thermal resistance-making it the sole choice for automotive ECU references demanding long-term stability and low-power standby compliance.
Availability
PZU84-C4V7-QR is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and infotainment power sequencing requiring stable component supply with AEC-Q101 assurance and traceable lot documentation.
Supply support for PZU84-C4V7-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 power solutions.
The PZU84-Q series belongs to Nexperia's AEC-Q101-certified Zener regulator portfolio, engineered specifically for automotive power rail stabilization, ECU reference generation, and transient suppression in harsh-environment electronics.
FAQ
What is the maximum continuous forward current for PZU84-C4V7-QR?
The absolute maximum forward current is 200 mA per the Limiting Values table. However, forward conduction is not part of its intended Zener regulation function; operation is strictly in reverse-biased mode. Forward voltage is specified at 0.9 V max at 10 mA, but sustained forward bias risks thermal overstress and is not recommended in design.
Does PZU84-C4V7-QR require external series resistance in regulation circuits?
Yes-a current-limiting resistor is mandatory to set the operating Zener current between 0.5 mA and 20 mA. For 4.7 V regulation from a 12 V supply, a 1.5 kΩ resistor establishes ~5 mA IZ, ensuring stable VZ while staying within 250 mW total dissipation limits on standard FR4 PCB.
How does the "C" suffix in PZU84-C4V7-QR affect performance versus "B" variants?
The "C" suffix denotes the tighter ±2 % Zener voltage tolerance grade and optimized low-leakage design (≤0.2 μA at 0 V), whereas "B" variants offer ~±5 % tolerance and higher leakage (e.g., 1.0 μA). The "C" grade also features lower differential resistance (800 Ω vs. 1000 Ω) and improved temperature coefficient control for automotive reference stability.
Can PZU84-C4V7-QR be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing spread in VZ, causing current hogging when paralleled. Even matched units risk thermal runaway due to positive temperature coefficient above ~5 V. For >250 mW dissipation, use a single higher-rated Zener or implement active regulation with a transistor-based shunt circuit.
PZU84-C4V7-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):
- 4.66 V
- Tolerance:
- ±5.15%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1 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-C4V7-QR FAQ
1.How can I place an order for PZU84-C4V7-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C4V7-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-C4V7-QR reliable?
The price and inventory of PZU84-C4V7-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-C4V7-QR is usually 5 days.
3.What payment methods are accepted for PZU84-C4V7-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C4V7-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C4V7-QR?
PZU84-C4V7-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C4V7-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-C4V7-QR?
For technical support, including PZU84-C4V7-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C4V7-QR requirements.
6.How does Aetrix verify that PZU84-C4V7-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-C4V7-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-C4V7-QR meets industry standards.
7.What is the process for return or replacement of PZU84-C4V7-QR?
All PZU84-C4V7-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C4V7-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-C4V7-QR part is unused and in its original packaging.
Return procedure for PZU84-C4V7-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C4V7-QR Tags
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