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Nexperia USA Inc. PZU84-C47-QR
- Part No.:
- PZU84-C47-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C47-QR.pdf
- Description:
- DIODE ZENER 47V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,398
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Product details
Overview
PZU84-C47-QR from Nexperia is a ±5 % tolerance Zener voltage regulator diode with nominal 47 V breakdown voltage, 375 Ω differential resistance at IZ = 2 mA, and 0.05 μA reverse current at VR = 40 V, housed in an AEC-Q101-qualified SOT23 package for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the PZU84-C47-QR datasheet, PZU84-C47-QR pinout, PZU84-C47-QR application, or PZU84-C47-QR equivalent, this device serves as a precision shunt regulator in low-power automotive subsystems where stable 47 V clamping, low leakage, and fast transient response are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 47 V reference across its cathode-anode terminals under regulated current conditions (IZ = 2 mA). Its design includes intentional minor leakage rise to optimize switching speed and reduce noise per AN90031.
It features a hard breakdown knee and is rated for 150 °C junction temperature, with thermal resistance Rth(j-a) = 500 K/W in free air and Rth(j-sp) = 330 K/W to solder point-enabling reliable operation in compact automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 44.0 V to 50.0 V at IZ = 2 mA - defines precise clamping threshold for 47 V nominal regulation |
| Differential Resistance rdif | 375 Ω at IZ = 2 mA - determines output impedance and regulation sensitivity to load current changes |
| Reverse Current IR | 0.05 μA at VR = 40 V - ensures minimal standby power loss in high-impedance bias networks |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 μs - enables robust surge suppression against transient overvoltage events |
| Junction Temperature Tj | −55 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for reflow and wave soldering per IPC-7351 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in shunt regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or component connection permitted |
| 3 | Cathode (K) | Reverse-biased terminal; connects to regulated voltage rail and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical 47 V reference applications without premium tight-tolerance pricing |
| Optimized leakage for fast switching | Controlled 0.05 μA IR balances low quiescent current with improved transient response vs. ultra-low-leakage variants |
| AEC-Q101 qualification | Validated for automotive use including engine control units, body electronics, and ADAS power domains |
| Hard breakdown knee | Ensures sharp, predictable conduction onset at 47 V-critical for accurate overvoltage detection and clamping |
| Low thermal resistance to solder point | Rth(j-sp) = 330 K/W allows efficient heat transfer to PCB copper, supporting sustained 250 mW dissipation |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Supply Monitoring |
|---|---|
Use Scenario: Voltage supervision of 48 V auxiliary supply rails in door module ECUs. IC Role / Device Role / Timing Role: Shunt regulator providing 47 V overvoltage clamp and reference for comparator-based fault detection. Use Value: Prevents damage to downstream 3.3 V/5 V LDOs during load-dump transients while maintaining AEC-Q101 compliance. |
Use Scenario: Reference input for ADC monitoring of USB-C PD adapter output in head unit power management. IC Role / Device Role / Timing Role: Precision 47 V Zener reference enabling ±1 % voltage measurement accuracy over temperature. Use Value: Enables real-time detection of adapter overvoltage faults before they disrupt display or audio subsystems. |
| ADAS Camera Power Protection | Electric Power Steering (EPS) Sensor Biasing |
Use Scenario: Clamping circuit protecting image sensor analog front-end from ISO 7637-2 pulse 5a surges. IC Role / Device Role / Timing Role: Fast-response shunt element absorbing 40 W peak surges within 100 μs to protect sensitive CMOS imaging circuitry. Use Value: Maintains signal integrity and prevents latch-up during harsh electrical environments without adding active components. |
Use Scenario: Stable bias voltage generation for Hall-effect torque sensors operating near motor windings. IC Role / Device Role / Timing Role: Low-noise 47 V reference source feeding precision current mirrors in sensor excitation circuitry. Use Value: Reduces measurement drift caused by supply ripple and EMI coupling, improving torque sensing resolution by >12 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C47,115 | ±5 % tolerance, same 47 V nominal, but higher rdif (400 Ω at 5 mA) and no AEC-Q101 qualification | Limited to industrial/commercial use; not validated for automotive temperature cycling or humidity testing | Select when AEC-Q101 is not required and cost is primary constraint |
| MMSZ47ET1G | ±5 % tolerance, 47 V nominal, but higher IR (1.0 μA at 37.6 V) and lower PZSM (25 W) | Insufficient surge capability for ISO 7637-2 compliance; unsuitable for under-hood transient suppression | Choose only for low-energy, non-automotive 47 V reference applications with minimal surge exposure |
Compared with BZX84-C47,115 and MMSZ47ET1G, PZU84-C47-QR delivers superior automotive reliability via AEC-Q101 qualification, tighter thermal performance (Rth(j-sp) = 330 K/W), and higher surge immunity (40 W vs. ≤25 W), making it the sole option for safety-critical 47 V clamping in OEM designs.
Availability
PZU84-C47-QR is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera protection, and EPS sensor biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PZU84-C47-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 advanced packaging.
The PZU84-Q series belongs to Nexperia's AEC-Q101-certified Zener regulator portfolio, engineered specifically for automotive voltage reference, overvoltage protection, and precision biasing in harsh-environment ECUs.
FAQ
What is the maximum continuous forward current rating for PZU84-C47-QR?
The absolute maximum forward current is 200 mA per Table 5 (Limiting Values). However, normal operation occurs in reverse breakdown; forward conduction is only relevant during polarity-reversal fault conditions or circuit startup sequencing, and sustained forward bias above 10 mA risks thermal overstress due to VF ≈ 0.9 V at IF = 10 mA.
Can PZU84-C47-QR replace PZU84-B47-Q in an existing design?
Yes, but with trade-offs: PZU84-C47-QR offers ±5 % tolerance and optimized leakage for noise reduction, while PZU84-B47-Q provides ±2 % tolerance and lower leakage (0.05 μA vs. 0.05 μA at same VR, but tighter VZ spread). The C-series prioritizes fast switching; the B-series prioritizes precision regulation-select based on whether stability or transient response dominates the application.
Is pin 2 truly unconnected, or can it be used as a heatsink pad?
Pin 2 is internally unconnected (n.c.) per Table 2 and must remain electrically floating. It is not bonded to die or substrate and provides no thermal or electrical benefit. Using it as a heatsink pad violates the SOT23 mechanical specification and may cause solder bridging or assembly defects; thermal path relies solely on pins 1 and 3 per Rth(j-sp) characterization.
What is the recommended current-limiting resistor value for 47 V regulation at 5 mA?
For IZ = 5 mA, use R = (VIN − 47 V) / 0.005 A. At VIN = 55 V, R = 1.6 kΩ. Derate power in R by ≥50 %: PR = (55 V − 47 V)² / 1600 Ω = 40 mW → select ≥0.125 W resistor. Confirm VZ remains within 44–50 V range at actual IZ; note datasheet VZ specs are at IZ = 2 mA for C-series parts.
PZU84-C47-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-C47-QR FAQ
1.How can I place an order for PZU84-C47-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C47-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-C47-QR reliable?
The price and inventory of PZU84-C47-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-C47-QR is usually 5 days.
3.What payment methods are accepted for PZU84-C47-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C47-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C47-QR?
PZU84-C47-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C47-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-C47-QR?
For technical support, including PZU84-C47-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C47-QR requirements.
6.How does Aetrix verify that PZU84-C47-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-C47-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-C47-QR meets industry standards.
7.What is the process for return or replacement of PZU84-C47-QR?
All PZU84-C47-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C47-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-C47-QR part is unused and in its original packaging.
Return procedure for PZU84-C47-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C47-QR Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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