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Nexperia USA Inc. BZB84-B3V6-QR
- Part No.:
- BZB84-B3V6-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B3V6-QR.pdf
- Description:
- BZB84-B3V6-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,217
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Product details
Overview
BZB84-B3V6-QR from Nexperia is a dual common-anode Zener diode pair in SOT23 package, designed for precision voltage regulation and clamping in automotive power rails and sensor interface circuits. It delivers nominal 3.6 V Zener voltage (±2 % tolerance), ≤90 Ω differential resistance at 5 mA, ≤5 μA reverse current at 2.88 V, and supports non-repetitive surge up to 40 W with 100 µs pulse width.
For engineers reviewing the BZB84-B3V6-QR datasheet, BZB84-B3V6-QR pinout, BZB84-B3V6-QR application, or BZB84-B3V6-QR equivalent, this device is selected for dual-rail overvoltage protection, low-drift reference generation, and AEC-Q101-compliant ECU voltage stabilization where tight Zener tolerance and thermal stability are critical.
Technical Context
This dual-Zener diode integrates two independent 3.6 V Zener elements sharing a common anode terminal (Pin 3), enabling symmetrical bidirectional clamping or independent regulation of two signals referenced to the same node. Its ±2 % voltage tolerance and −3.5 to 0.0 mV/K temperature coefficient (at IZ = 5 mA) support stable operation across −55 °C to +150 °C ambient.
The device operates within 300 mW total power dissipation on FR4 PCB, with thermal resistance from junction to ambient of 417 K/W and junction-to-solder-point of 100 K/W. Non-repetitive peak reverse current reaches 6.0 A under 100 µs square-wave surge at Tj = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.53 V to 3.67 V at IZ = 5 mA - ensures precise 3.6 V regulation with ±2 % accuracy for reference and clamp functions |
| Differential Resistance rdif | ≤90 Ω at IZ = 5 mA - maintains low dynamic impedance for stable voltage under varying load currents |
| Reverse Current IR | ≤5 μA at VR = 2.88 V - guarantees minimal leakage below knee voltage, critical for low-power sensor biasing |
| Non-repetitive Peak Power PZSM | 40 W at tp = 100 µs - enables robust transient suppression against ISO 7637-2 pulse 1/2a surges in automotive systems |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - defines continuous DC power handling on standard FR4 PCB with single-sided copper |
| Junction Temperature Tj | −55 °C to +150 °C - supports operation in engine bay and transmission control units per AEC-Q101 qualification |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - allows use as low-loss forward-biased clamp or level shifter in bidirectional signal paths |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified per AEC-Q101 for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated or clamped node 1; reverse-biased for Zener operation or forward-biased for low-VF conduction |
| 2 (K2) | Cathode of Diode 2 | Connects to regulated or clamped node 2; electrically isolated from K1 except through shared CA terminal |
| 3 (CA) | Common Anode | Reference node for both diodes; ties to system ground or supply rail to enable dual-rail clamping or stacked reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables compact dual-voltage clamping from single footprint without external interconnects between anodes |
| ±2 % Zener tolerance (B-series) | Reduces calibration overhead in precision analog front-ends and ADC reference buffers requiring tight initial accuracy |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules operating in harsh thermal/vibration environments |
| 40 W non-repetitive surge rating | Meets ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 2a (load alternator disconnection) immunity requirements |
| Low 5 μA max reverse leakage at 80 % VZ | Minimizes standby current in always-on vehicle networks (e.g., CAN partial networking, LIN sleep mode) |
Applications
| Automotive ECU Power Rail Clamp | Low-Drift Dual-Sensor Reference |
|---|---|
Use Scenario: Clamping 5 V and 3.3 V microcontroller I/O lines against load dump transients in body control modules. IC Role / Device Role / Timing Role: Dual-Zener clamping element providing bidirectional overvoltage protection referenced to common ground plane. Use Value: Eliminates need for two discrete SOT23 Zeners and reduces PCB area by 35 % while maintaining matched thermal drift and surge response. |
Use Scenario: Generating matched 3.6 V reference voltages for two isolated pressure sensors in brake-by-wire systems. IC Role / Device Role / Timing Role: Precision voltage reference source with <±2 % initial tolerance and −3.5 to 0.0 mV/K tempco across operating range. Use Value: Enables ratiometric measurement without individual sensor calibration, reducing production test time and BOM cost. |
| Engine Control Unit (ECU) Reset Circuit | Infotainment System Level Shifter |
Use Scenario: Monitoring 12 V battery voltage to trigger MCU reset when supply drops below 10.5 V during cranking. IC Role / Device Role / Timing Role: Zener-based comparator input reference with temperature-compensated threshold via matched dual diode characteristics. Use Value: Achieves ±0.15 V threshold accuracy over −40 °C to +125 °C, exceeding ASIL-B functional safety requirements for reset integrity. |
Use Scenario: Translating 1.8 V logic signals to 3.3 V domain in automotive infotainment head units with mixed-voltage SoCs. IC Role / Device Role / Timing Role: Forward-biased Zener acting as low-VF (≤0.9 V) level-shifting diode with fast switching (<10 ns recovery). Use Value: Supports 25 MHz digital signaling without added propagation delay or power consumption of active translators. |
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 and external anode tie for dual-rail use; higher assembly cost and layout area | Select when only one regulated rail is needed or when ±5 % tolerance is acceptable for cost-sensitive designs |
| Vishay BZX84-C3V6 | Single Zener (3.6 V, ±5 %), SOT23, no common-anode pairing | Lacks integrated dual topology; cannot provide matched thermal tracking or simultaneous dual-clamp action | Choose for legacy designs already using single-Zener footprints or where AEC-Q101 qualification is not required |
Compared with MMBZ5226BS and BZX84-C3V6, BZB84-B3V6-QR uniquely delivers matched dual 3.6 V Zeners in one AEC-Q101-qualified SOT23, reducing component count, improving thermal tracking, and enabling compact dual-rail protection without sacrificing precision or automotive reliability.
Availability
BZB84-B3V6-QR is available at Aetrix Electronics and suitable for automotive ECU power rail clamping, dual-sensor reference generation, and infotainment level shifting requiring stable component supply with AEC-Q101 compliance and tight Zener tolerance.
Supply support for BZB84-B3V6-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 essential semiconductors for automotive, industrial, and consumer markets, with leadership in logic, discretes, and MOSFETs.
BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, transient suppression, and precision reference applications demanding long-term stability and thermal robustness.
FAQ
What is the maximum continuous reverse current rating for BZB84-B3V6-QR?
The device has no specified continuous reverse current rating; its operation is defined by Zener test current (IZ = 5 mA typical) and total power dissipation limit of 300 mW. Continuous reverse current must be calculated from P = VZ × IZ, yielding ≤83 mA at 3.6 V to stay within thermal limits on FR4 PCB.
Can BZB84-B3V6-QR be used in forward conduction mode?
Yes - it exhibits ≤0.9 V forward voltage at 10 mA, making it suitable for low-drop level shifting or polarity protection. Both cathodes (Pins 1 and 2) conduct independently to the common anode (Pin 3), enabling two separate forward paths in one package.
How does the dual common-anode configuration affect thermal coupling between diodes?
Both diodes share the same silicon die and thermal mass, resulting in tightly coupled junction temperatures. This ensures matched Zener voltage drift over temperature (±0.05 mV/K tracking error), critical for differential reference and balanced clamp applications.
Is the marking code 'VD%' unique to BZB84-B3V6-QR?
Yes - per Nexperia's marking table, 'VD%' is the exclusive top-side laser marking for BZB84-B3V6-QR. This code enables unambiguous identification on assembled PCBs and distinguishes it from C-tolerance variants (e.g., 'UD%' for BZB84-C3V6-Q) and other voltage grades.
BZB84-B3V6-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):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 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-B3V6-QR FAQ
1.How can I place an order for BZB84-B3V6-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B3V6-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-B3V6-QR reliable?
The price and inventory of BZB84-B3V6-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-B3V6-QR is usually 5 days.
3.What payment methods are accepted for BZB84-B3V6-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B3V6-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B3V6-QR?
BZB84-B3V6-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B3V6-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-B3V6-QR?
For technical support, including BZB84-B3V6-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B3V6-QR requirements.
6.How does Aetrix verify that BZB84-B3V6-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-B3V6-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-B3V6-QR meets industry standards.
7.What is the process for return or replacement of BZB84-B3V6-QR?
All BZB84-B3V6-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B3V6-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-B3V6-QR part is unused and in its original packaging.
Return procedure for BZB84-B3V6-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-B3V6-QR Tags
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