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Nexperia USA Inc. BZB84-C4V7-QR
- Part No.:
- BZB84-C4V7-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C4V7-QR.pdf
- Description:
- BZB84-C4V7-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,394
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Product details
Overview
BZB84-C4V7-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, rated for 4.7 V ±5 % nominal Zener voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive use.
For engineers reviewing the BZB84-C4V7-QR datasheet, BZB84-C4V7-QR pinout, BZB84-C4V7-QR application, or BZB84-C4V7-QR equivalent, this device serves as a compact dual-voltage reference or overvoltage clamp in space-constrained automotive and industrial power rails where dual-channel regulation or redundancy is required.
Technical Context
This dual Zener diode integrates two independent Zener elements sharing a common anode terminal (Pin 3), enabling simultaneous regulation of two separate nodes referenced to the same ground or supply rail. Each cathode (Pins 1 and 2) operates independently with specified Zener voltage, differential resistance, and temperature coefficient.
It supports non-repetitive surge handling up to 40 W per diode (100 µs square wave), exhibits low reverse leakage (<3 µA at VR = 4.0 V), and maintains stable regulation across –55 °C to +150 °C ambient, validated under AEC-Q101 stress testing for automotive reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.40 V to 5.00 V at IZ = 5 mA - defines regulated output range for precision clamping or reference generation |
| Differential Resistance (rdif) | 500 Ω max at IZ = 5 mA - determines regulation stiffness and load-induced voltage deviation |
| Reverse Current (IR) | ≤3 µA at VR = 4.0 V - ensures minimal quiescent power loss in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power budget for thermal design on FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W per diode (100 µs square wave) - enables transient overvoltage suppression without failure |
| Thermal Resistance (Rth(j-a)) | 417 K/W - informs junction-to-ambient temperature rise under steady-state loading |
| Operating Temperature | –55 °C to +150 °C - supports under-hood and engine-control module deployment |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated placement and reflow soldering on standard FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Output node for first Zener regulation path; connects to protected or referenced circuit node |
| 2 | Cathode (Diode 2) | Independent output node for second Zener regulation path; enables dual-rail or redundant clamping |
| 3 | Common Anode | Shared reference terminal; typically tied to system ground or negative rail for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode Zener topology | Enables compact dual-channel voltage regulation or bidirectional overvoltage protection in single footprint |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, HAST, and ESD testing per JESD22 standards |
| ±5 % Zener tolerance (C-series) | Meets cost-sensitive automotive and industrial applications requiring moderate voltage accuracy without tight binning |
| Low thermal resistance to solder point | Rth(j-sp) = 100 K/W - improves heat transfer to PCB copper, supporting higher pulse duty cycles |
| Small SOT23 footprint | Reduces board area by >50 % vs. discrete dual-DIP solutions while maintaining manufacturability |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 5 V supply rails for microcontroller I/O buffers and CAN transceiver biasing in BCM subassemblies. IC Role / Device Role / Timing Role: Dual Zener reference providing stable 4.7 V clamping on both LIN bus and wake-up input lines. Use Value: Prevents latch-up during load-dump transients while maintaining signal integrity across two critical control paths using one SOT23 device. |
Use Scenario: Biasing and protecting analog front-end inputs of 4–20 mA current-loop receivers in PLC analog input modules. IC Role / Device Role / Timing Role: Common-anode dual clamp limiting input voltage swing to ±5 V on differential sensor inputs. Use Value: Eliminates need for two separate Zeners and reduces PCB routing complexity while meeting IEC 61000-4-5 surge immunity requirements. |
| Automotive Infotainment Power Sequencing | Consumer Appliance Motor Driver Protection |
Use Scenario: Ensuring controlled power-up sequencing between SoC core and peripheral voltage domains in head-unit power management. IC Role / Device Role / Timing Role: Dual Zener providing independent enable thresholds for 1.8 V and 3.3 V LDOs via resistor-divider feedback. Use Value: Enables deterministic power-on reset timing with matched thermal drift characteristics across both regulation paths. |
Use Scenario: Clamping gate-source voltage spikes on half-bridge MOSFET drivers in washing machine motor inverters. IC Role / Device Role / Timing Role: Common-anode Zener pair suppressing positive and negative transients on high-side and low-side driver outputs. Use Value: Prevents unintended turn-on/turn-off of power switches during commutation, improving EMI and reliability without external RC snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5230BS | Single dual-anode Zener (4.7 V, ±5 %), same SOT23 package but lower PZSM (25 W) and no AEC-Q101 qualification | Limited to commercial-temperature industrial use; not suitable for under-hood automotive deployment | Select when AEC-Q101 compliance is unnecessary and cost is primary constraint |
| Vishay SMBZ5230-E3/52 | Single Zener (4.7 V, ±5 %) in SOD-123; no dual-cathode configuration; higher Ptot (500 mW) but requires two devices for dual-channel function | Increases board area and assembly cost; lacks integrated dual-channel coordination | Select only if higher power rating per channel is required and layout allows dual discrete placement |
Compared with MMBZ5230BS and SMBZ5230-E3/52, BZB84-C4V7-QR uniquely delivers automotive-qualified dual-channel regulation in a single SOT23 footprint, reducing component count, improving thermal coupling between channels, and eliminating inter-device matching variance in critical safety-related circuits.
Availability
BZB84-C4V7-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, infotainment power sequencing, and appliance motor driver protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZB84-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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for dual-rail voltage regulation and transient suppression in harsh-environment automotive subsystems.
FAQ
What is the Zener test current used to specify the 4.7 V rating?
The nominal 4.7 V Zener voltage is specified at IZ = 5 mA, with a guaranteed range of 4.40 V to 5.00 V under those conditions. This current level balances measurement stability and self-heating effects, and matches typical biasing currents used in reference and clamp applications.
Can Pin 3 (common anode) be left floating or must it be connected?
Pin 3 must be connected - it is the mandatory reference terminal for both Zener diodes. Leaving it floating renders both diodes nonfunctional. In most applications, it is tied to ground or the negative rail to establish the clamping reference potential for both cathodes.
How does the ±5 % tolerance affect regulation accuracy in precision circuits?
The ±5 % tolerance (C-series) means the actual Zener voltage may vary from 4.40 V to 5.00 V at 5 mA. For precision references, this requires downstream trimming or calibration; however, it remains suitable for overvoltage protection, power-rail clamping, and non-critical biasing where absolute accuracy is secondary to robustness and cost.
Is derating required for operation above 25 °C ambient?
Yes - total power dissipation must be linearly derated above 25 °C ambient at 2.4 mW/°C, based on Rth(j-a) = 417 K/W. At 85 °C ambient, maximum continuous Ptot drops to approximately 156 mW to maintain Tj ≤ 150 °C, per the datasheet's thermal limits.
BZB84-C4V7-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZB84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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
BZB84-C4V7-QR FAQ
1.How can I place an order for BZB84-C4V7-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-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 BZB84-C4V7-QR reliable?
The price and inventory of BZB84-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 BZB84-C4V7-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C4V7-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C4V7-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C4V7-QR?
BZB84-C4V7-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-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 BZB84-C4V7-QR?
For technical support, including BZB84-C4V7-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C4V7-QR requirements.
6.How does Aetrix verify that BZB84-C4V7-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-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 BZB84-C4V7-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C4V7-QR?
All BZB84-C4V7-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-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 BZB84-C4V7-QR part is unused and in its original packaging.
Return procedure for BZB84-C4V7-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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