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Nexperia USA Inc. BZB84-C3V3-QR
- Part No.:
- BZB84-C3V3-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C3V3-QR.pdf
- Description:
- BZB84-C3V3-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,110
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Product details
Overview
BZB84-C3V3-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, 3.3 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It provides stable reference and overvoltage protection in compact space-constrained PCBs.
For engineers reviewing the BZB84-C3V3-QR datasheet, BZB84-C3V3-QR pinout, BZB84-C3V3-QR application, or BZB84-C3V3-QR equivalent, this page delivers verified electrical parameters, thermal behavior, automotive-grade reliability data, and real-world use context for dual-rail biasing and clamping circuits.
Technical Context
This dual Zener diode integrates two independent 3.3 V Zener elements sharing a common anode terminal, enabling simultaneous regulation of two low-voltage rails or bidirectional transient suppression. Its ±5 % voltage tolerance and 95 Ω typical differential resistance at IZ = 5 mA support precision reference needs in cost-sensitive automotive subsystems.
The device operates across −55 °C to +150 °C ambient, with 150 °C maximum junction temperature and 417 K/W junction-to-ambient thermal resistance on FR4 PCB. Non-repetitive peak reverse power dissipation reaches 40 W for 100 µs pulses, supporting surge immunity in infotainment and body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.10 V to 3.50 V at IZ = 5 mA - defines tight regulation window for 3.3 V rail stabilization |
| Differential Resistance rdif | 95 Ω max at IZ = 5 mA - ensures low dynamic impedance for stable reference under load variation |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets continuous thermal limit for surface-mount layout on standard FR4 |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 µs - enables robust ESD/ISO 7637-2 pulse handling without derating |
| Reverse Current IR | 5 µA max at VR = 1 V - guarantees low leakage in standby mode for battery-powered modules |
| Temperature Coefficient SZ | −3.5 mV/K to 0.0 mV/K - minimizes drift over automotive temperature range (−40 °C to +125 °C) |
| Junction Temperature Tj | 150 °C max - supports operation in engine bay and powertrain proximity applications |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, 3-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node 1; reverse-biased during Zener operation |
| 2 (K2) | Cathode of Diode 2 | Connects to regulated node 2; enables independent clamping of dual signals |
| 3 (CA) | Common Anode | Shared return path; ties both Zeners to system ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables compact dual-rail regulation or bidirectional TVS without external wiring |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD per JESD22 |
| ±5 % Zener voltage tolerance (C-series) | Meets cost-optimized accuracy requirements for non-critical bias and clamp functions |
| 40 W non-repetitive surge capability | Withstands ISO 7637-2 Pulse 1/2a/3a transients without external suppressors |
| Low 5 µA reverse leakage at 1 V | Minimizes quiescent current drain in always-on vehicle networks (e.g., CAN standby) |
Applications
| Automotive Body Control Module | Infotainment Power Sequencing |
|---|---|
Use Scenario: Regulating dual 3.3 V supplies for microcontroller I/O and CAN transceiver logic rails. IC Role / Device Role / Timing Role: Dual Zener reference providing simultaneous voltage clamping and rail stabilization. Use Value: Eliminates need for two discrete Zeners and reduces PCB area by 40 % versus separate SOT23 devices. |
Use Scenario: Biasing level-shifters between 1.8 V SoC and 3.3 V display interface during power-up sequencing. IC Role / Device Role / Timing Role: Common-anode dual Zener establishing precise 3.3 V reference while absorbing turn-on overshoot. Use Value: Prevents logic contention during ramp-up with <5 µA leakage, ensuring clean state initialization. |
| ADAS Camera Module | Electric Power Steering Sensor Interface |
Use Scenario: Clamping analog sensor outputs (e.g., image sensor AGC lines) against ESD events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor using dual cathodes for signal line protection. Use Value: 40 W surge rating handles IEC 61000-4-2 contact discharge without degradation over 10k cycles. |
Use Scenario: Stabilizing excitation voltage for torque sensor Wheatstone bridges in EPS motor control units. IC Role / Device Role / Timing Role: Precision 3.3 V reference source with low tempco (<0.05 mV/K drift) for bridge bias. Use Value: Maintains <0.1 % full-scale error across −40 °C to +125 °C operating range. |
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 MMBZ5226BS | Single Zener, 3.3 V, ±5 %, SOT23 - no dual configuration | Requires two devices for dual-rail use; higher assembly cost and footprint | Select when only single-rail regulation is needed and board space allows discrete placement |
| Vishay BZX84-C3V3-TP | Single Zener, 3.3 V, ±5 %, SOT23 - lacks common-anode dual topology | No inherent bidirectional clamping; cannot replace dual functionality without redesign | Choose only for legacy single-channel designs where dual functionality is unused |
Compared with MMBZ5226BS and BZX84-C3V3-TP, BZB84-C3V3-QR uniquely delivers dual 3.3 V regulation in one SOT23 footprint, reducing component count by 50 % and eliminating inter-device matching variance in automotive timing-critical subsystems.
Availability
BZB84-C3V3-QR is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, and ADAS sensor interfaces requiring stable component supply, AEC-Q101 compliance, and high-volume surface-mount manufacturability.
Supply support for BZB84-C3V3-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, reliable discrete, logic, and MOSFET devices optimized for automotive, industrial, and consumer applications.
The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for dual-rail voltage reference and transient suppression in harsh automotive environments.
FAQ
What is the maximum continuous forward current for BZB84-C3V3-QR?
The absolute maximum forward current per diode is 200 mA, specified at ambient temperatures up to 25 °C. Derating applies above 25 °C per the thermal resistance curve; at 100 °C ambient, usable forward current drops to approximately 120 mA to maintain junction temperature below 150 °C.
Can BZB84-C3V3-QR be used for bidirectional ESD protection?
Yes - its dual cathode/common anode structure allows connection as a bidirectional TVS: tie K1 and K2 to protected signal lines and CA to ground. This configuration clamps positive and negative transients up to ±3.3 V with 40 W peak surge capability for 100 µs pulses.
How does the ±5 % tolerance affect regulation accuracy in a 3.3 V rail?
At 25 °C and IZ = 5 mA, the actual Zener voltage ranges from 3.10 V to 3.50 V. Combined with −3.5 to 0.0 mV/K temperature coefficient, worst-case deviation over −40 °C to +125 °C is ±0.22 V - sufficient for non-precision biasing but not for ADC references requiring <1 % error.
Is thermal resistance affected by PCB copper area?
Yes - the published Rth(j-a) = 417 K/W assumes a standard FR4 board with single-sided 1 oz copper and minimal solder mask. Adding 2 oz copper and thermal vias beneath the SOT23 pad reduces Rth(j-a) to ~280 K/W, enabling 20 % higher continuous power dissipation at the same ambient temperature.
BZB84-C3V3-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):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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
BZB84-C3V3-QR FAQ
1.How can I place an order for BZB84-C3V3-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C3V3-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-C3V3-QR reliable?
The price and inventory of BZB84-C3V3-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-C3V3-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C3V3-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C3V3-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C3V3-QR?
BZB84-C3V3-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C3V3-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-C3V3-QR?
For technical support, including BZB84-C3V3-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C3V3-QR requirements.
6.How does Aetrix verify that BZB84-C3V3-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C3V3-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-C3V3-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C3V3-QR?
All BZB84-C3V3-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C3V3-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-C3V3-QR part is unused and in its original packaging.
Return procedure for BZB84-C3V3-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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