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Nexperia USA Inc. BZB84-B2V4-QR
- Part No.:
- BZB84-B2V4-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B2V4-QR.pdf
- Description:
- BZB84-B2V4-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,222
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Product details
Overview
BZB84-B2V4-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, rated for 2.4 V nominal Zener voltage (±2 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It delivers stable reference voltage in compact space-constrained systems such as engine control units and body electronics.
For engineers reviewing the BZB84-B2V4-QR datasheet, BZB84-B2V4-QR pinout, BZB84-B2V4-QR application, or BZB84-B2V4-QR equivalent, this page provides verified electrical parameters, thermal behavior, dual-diode terminal mapping, automotive-grade reliability context, and real-world use cases in low-power regulation circuits.
Technical Context
This dual common-anode Zener diode integrates two independently rated 2.4 V Zener junctions sharing a single anode terminal, enabling bidirectional clamping or dual-rail reference generation in a single SMT footprint. Each diode supports 5 mA test current and exhibits ≤600 Ω differential resistance at that condition.
It operates across −55 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 417 K/W on standard FR4 PCB, and is characterized for non-repetitive surge handling up to 40 W (100 µs square wave) per diode - critical for transient suppression in automotive 12 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal, ±2 % tolerance (B-series), ensuring precise 2.4 V reference under 5 mA bias |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C, limiting continuous thermal load on small SOT23 footprint |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 5 mA, defining voltage regulation stiffness against load current variation |
| Non-repetitive Peak Power (PZSM) | 40 W per diode (100 µs square wave), supporting ESD/transient immunity in automotive CAN/LIN nodes |
| Reverse Current (IR) | ≤1 µA at VR = 1 V, confirming low leakage for battery-backed circuits |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA, enabling low-loss forward conduction when used as clamp or protection path |
| Temperature Coefficient (SZ) | −3.5 to 0.0 mV/K at IZ = 5 mA, indicating near-zero TC operation near 2.4 V for stable reference over temperature |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm pitch), qualified per AEC-Q101 for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Provides dedicated cathode connection for first Zener element; reverse-biased to regulate at 2.4 V |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second Zener; enables dual-rail referencing or bidirectional clamping |
| 3 (CA) | Common Anode | Shared anode node; ties both Zeners to same reference potential (e.g., ground or supply rail) |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables compact dual-voltage reference or symmetrical clamping without discrete pairing |
| AEC-Q101 qualification | Validated for automotive under-hood and cabin applications including ECU, lighting, and sensor interfaces |
| ±2 % Zener voltage tolerance (B-series) | Reduces calibration overhead in precision 2.4 V reference designs versus ±5 % C-series variants |
| 40 W non-repetitive surge rating | Withstands ISO 7637-2 pulse 1/2a/3a transients without derating in 12 V vehicle networks |
| Low 0.9 V forward voltage | Minimizes conduction loss when used as active clamp or reverse-polarity protection element |
Applications
| Engine Control Unit (ECU) Sensor Biasing | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Providing stable 2.4 V bias to analog sensors (e.g., MAP, throttle position) in harsh under-hood environments. IC Role / Device Role / Timing Role: Dual Zener acts as precision voltage reference and transient suppressor for sensor front-end op-amps. Use Value: Maintains sensor accuracy across −40 °C to +125 °C while absorbing load dump spikes via 40 W surge capability. |
Use Scenario: Regulating auxiliary 2.4 V rails for LIN transceiver logic and LED driver ICs in door modules. IC Role / Device Role / Timing Role: Supplies clean, low-noise reference to LIN PHY and enables fast-response overvoltage shutdown. Use Value: Eliminates need for separate LDO + TVS by combining regulation and transient protection in one SOT23 device. |
| Infotainment System Power Sequencing | ADAS Camera Module Reference |
Use Scenario: Generating synchronized 2.4 V startup references for microcontroller reset supervisors and ADCs during cold crank. IC Role / Device Role / Timing Role: Dual cathodes allow independent enable timing for analog and digital subsystems using shared anode. Use Value: Reduces BOM count and PCB area vs. two discrete Zeners while maintaining ±2 % matching between rails. |
Use Scenario: Stabilizing image sensor analog supply in rear-view cameras exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Functions as low-drift voltage reference for CCD/CMOS sensor bias and ADC reference buffers. Use Value: Near-zero temperature coefficient (−3.5 to 0.0 mV/K) ensures <±10 mV drift from −40 °C to +105 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZB84-C2V4-Q | Same 2.4 V nominal rating but ±5 % tolerance (C-series) and higher max differential resistance (600 Ω vs. B-series typical 400 Ω) | Acceptable where cost sensitivity outweighs precision; less suitable for high-accuracy sensor biasing | Select when tighter voltage matching is unnecessary and broader tolerance is acceptable for cost-driven designs |
| MMBZ5222BS-7-F | Single dual-anode Zener (2.4 V, ±5 %), lower PZSM (25 W), no AEC-Q101 qualification, SOT-363 package | Limited to non-automotive industrial or consumer use; lacks automotive surge robustness and thermal rating | Use only in non-automotive applications where AEC-Q101 compliance and 40 W surge are not required |
Compared with BZB84-C2V4-Q, the BZB84-B2V4-QR offers tighter voltage control and better regulation stiffness; versus MMBZ5222BS-7-F, it delivers certified automotive reliability, higher surge capacity, and superior thermal performance in the smaller SOT23 footprint.
Availability
BZB84-B2V4-QR is available at Aetrix Electronics and suitable for automotive engine control, body electronics, infotainment power sequencing, and ADAS camera reference applications requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for BZB84-B2V4-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 and logic devices for automotive, industrial, and mobile markets.
BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, transient suppression, and precision reference needs in space-constrained ECUs and sensor modules.
FAQ
What is the maximum continuous reverse current the BZB84-B2V4-QR can sustain?
The device supports a maximum continuous forward current of 200 mA per diode, but Zener operation relies on controlled reverse bias. At 2.4 V nominal regulation, the recommended test current is 5 mA; sustained reverse current above 20 mA requires thermal derating per the 300 mW total power limit and 417 K/W junction-to-ambient resistance on FR4 PCB.
Can BZB84-B2V4-QR be used for bidirectional ESD protection?
No - its dual common-anode structure supports unidirectional clamping from either cathode to the shared anode. For true bidirectional protection (e.g., USB or data lines), a dedicated bidirectional TVS like PESD5V0S1BA is required; this Zener is optimized for regulated DC reference and unidirectional transient suppression.
How does the −3.5 to 0.0 mV/K temperature coefficient impact circuit accuracy?
This range indicates minimal voltage drift over temperature: at 2.4 V nominal, the worst-case drift is ~0.36 mV/°C across −40 °C to +125 °C, yielding <±100 mV total shift. That enables stable sensor biasing and reference generation without external compensation in automotive ambient ranges.
Is the SOT23 footprint compatible with standard reflow profiles?
Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The recommended solder land pattern (0.6 mm × 0.7 mm pads, 1.9 mm pitch) and thermal resistance data confirm suitability for standard lead-free reflow, with peak temperatures up to 260 °C and 60-second duration above 217 °C.
BZB84-B2V4-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):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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-B2V4-QR FAQ
1.How can I place an order for BZB84-B2V4-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B2V4-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-B2V4-QR reliable?
The price and inventory of BZB84-B2V4-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-B2V4-QR is usually 5 days.
3.What payment methods are accepted for BZB84-B2V4-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B2V4-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B2V4-QR?
BZB84-B2V4-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B2V4-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-B2V4-QR?
For technical support, including BZB84-B2V4-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B2V4-QR requirements.
6.How does Aetrix verify that BZB84-B2V4-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-B2V4-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-B2V4-QR meets industry standards.
7.What is the process for return or replacement of BZB84-B2V4-QR?
All BZB84-B2V4-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B2V4-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-B2V4-QR part is unused and in its original packaging.
Return procedure for BZB84-B2V4-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-B2V4-QR Tags
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