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Nexperia USA Inc. BZB84-C47-QR
- Part No.:
- BZB84-C47-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C47-QR.pdf
- Description:
- BZB84-C47-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,894
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Product details
Overview
BZB84-C47-QR from Nexperia is a dual common-anode Zener diode pair in SOT23 package, rated for 47 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It delivers stable reference voltage in compact space-constrained designs such as ECU power rail clamping and sensor biasing.
For engineers reviewing the BZB84-C47-QR datasheet, BZB84-C47-QR pinout, BZB84-C47-QR application, or BZB84-C47-QR equivalent, key selection criteria include its dual-Zener topology with shared anode, ±5 % VZ tolerance at IZ = 2 mA, 375 Ω typical differential resistance, and non-repetitive peak reverse current of 0.5 A.
Technical Context
This dual-Zener device integrates two independent Zener junctions sharing a common anode terminal (Pin 3), enabling bidirectional voltage clamping or dual-rail reference generation from a single footprint. Its design supports simultaneous regulation of two circuits requiring matched thermal tracking and identical packaging constraints.
Operating at 47 V nominal Zener voltage with 0.05 μA max reverse current at VR = 37.6 V, it exhibits a positive temperature coefficient of +42.0 mV/K at IZ = 2 mA and 375 Ω typical dynamic impedance - characteristics optimized for precision analog sensing and automotive-grade transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 44.0 V to 50.0 V at IZ = 2 mA - defines clamping threshold with ±5 % tolerance for reliable overvoltage protection |
| Differential Resistance rdif | 375 Ω typical at IZ = 2 mA - determines regulation stiffness and output voltage deviation under load variation |
| Temperature Coefficient SZ | +42.0 mV/K at IZ = 2 mA - enables predictable VZ drift compensation in wide-temperature automotive environments |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Current IZSM | 0.5 A for tp = 100 μs - supports surge immunity against ISO 7637-2 pulse 1/2a transients in vehicle electronics |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - ensures low-loss forward conduction when used as clamp or level shifter |
| Junction Temperature Range | –55 °C to +150 °C - validated for under-hood automotive operation per AEC-Q101 stress testing |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, 3-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode 1) | Anode-referenced Zener junction for first 47 V regulation path; connects to protected node 1 |
| 2 | K2 (Cathode 2) | Independent anode-referenced Zener junction for second 47 V regulation path; enables dual-rail use |
| 3 | CA (Common Anode) | Shared anode connection; ties both Zeners to system ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables compact dual-voltage clamping without discrete component duplication or routing complexity |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| ±5 % Zener voltage tolerance (C-series) | Provides cost-optimized regulation accuracy suitable for non-critical biasing and protection functions |
| Low 0.05 μA reverse leakage at VR = 37.6 V | Minimizes quiescent current draw in always-on automotive subsystems |
| Thermal resistance Rth(j-sp) = 100 K/W | Supports reliable heat transfer to PCB solder points during transient overload events |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Protecting microcontroller I/O rails from load-dump transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Dual-Zener clamps both high-side and low-side signal paths relative to common ground. Use Value: Single SOT23 replaces two discrete Zeners, reducing board area by 40 % while maintaining matched thermal response. |
Use Scenario: Providing stable 47 V bias for photodiode amplifier stages in factory automation light curtains. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco for analog front-end conditioning. Use Value: +42.0 mV/K temperature coefficient allows predictable calibration offset correction across –40 °C to +125 °C. |
| USB-C PD Port Overvoltage Protection | Telecom Line Interface Surge Suppression |
|
Use Scenario: Safeguarding USB-C power delivery controller ICs against 48 V bus overvoltage faults. IC Role / Device Role / Timing Role: Fast-acting bidirectional clamp activated during VBUS fault conditions. Use Value: 0.5 A non-repetitive peak current rating handles IEC 61000-4-5 Level 3 surges without degradation. |
Use Scenario: Front-end protection for RS-485 transceivers exposed to induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary voltage limiter before TVS diode array in multi-stage protection architecture. Use Value: 375 Ω differential resistance ensures minimal insertion loss (<0.5 %) in 120 Ω differential data lines. |
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 MMBZ5262BS | Single Zener, 47 V, ±5 %, SOT-363 package, 200 mW Ptot | Requires two devices for dual-rail use; higher board area and thermal mismatch risk | Select when only one regulated rail is needed and space permits discrete layout |
| Vishay BZX84-C47-TP | Single Zener, 47 V, ±5 %, SOT-23, 300 mW Ptot, no AEC-Q101 qualification | Lacks automotive qualification and dual-diode integration; lower reliability assurance | Acceptable for industrial consumer applications where AEC-Q101 is not mandated |
Compared with MMBZ5262BS and BZX84-C47-TP, BZB84-C47-QR uniquely delivers dual-Zener functionality in automotive-qualified SOT23, eliminating inter-device thermal drift and reducing BOM count by 50 % in dual-rail designs.
Availability
BZB84-C47-QR is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, USB-C PD protection circuits, and telecom line interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZB84-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 delivering high-performance logic, discrete, and MOSFET solutions with emphasis on efficiency, reliability, and automotive-grade quality.
The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive and industrial environments.
FAQ
What is the maximum continuous reverse current rating for BZB84-C47-QR?
The device has no specified continuous reverse current rating; its operation is defined by Zener test current IZ = 2 mA for parameter characterization. Continuous dissipation must stay within 300 mW total power limit, corresponding to ~6.4 mA average reverse current at 47 V - but actual safe operating current depends on ambient temperature and PCB thermal design.
Can BZB84-C47-QR be used in series or parallel configurations?
No - the dual common-anode structure prohibits series connection of the internal diodes. Parallel use of multiple BZB84-C47-QR units is not recommended due to mismatched Zener voltages causing current hogging; each unit must operate independently with dedicated current-limiting resistors.
How does the +42.0 mV/K temperature coefficient affect circuit stability?
This positive coefficient means VZ increases linearly with junction temperature - useful for compensating negative tempcos in associated circuitry (e.g., op-amp input stages). At 100 °C ΔT, VZ rises by ~4.2 V, which must be factored into worst-case tolerance stack-up for precision references.
Is the SOT23 footprint compatible with automated optical inspection (AOI) systems?
Yes - the standardized SOT23 outline (2.9 mm × 1.3 mm, 1.9 mm pitch) and defined solder paste stencil openings (0.6 mm × 0.6 mm pads per Fig. 12) meet IPC-7351B Class L requirements, ensuring reliable AOI detection of solder joint integrity and component placement accuracy.
BZB84-C47-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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
BZB84-C47-QR FAQ
1.How can I place an order for BZB84-C47-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-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 BZB84-C47-QR reliable?
The price and inventory of BZB84-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 BZB84-C47-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C47-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C47-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C47-QR?
BZB84-C47-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-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 BZB84-C47-QR?
For technical support, including BZB84-C47-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C47-QR requirements.
6.How does Aetrix verify that BZB84-C47-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-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 BZB84-C47-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C47-QR?
All BZB84-C47-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-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 BZB84-C47-QR part is unused and in its original packaging.
Return procedure for BZB84-C47-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C47-QR Tags
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