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Nexperia USA Inc. BZB84-B3V0-QR
- Part No.:
- BZB84-B3V0-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B3V0-QR.pdf
- Description:
- BZB84-B3V0-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,060
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Product details
Overview
BZB84-B3V0-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, rated for 3.0 V nominal Zener voltage (±2 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation and clamping functions.
For engineers reviewing the BZB84-B3V0-QR datasheet, BZB84-B3V0-QR pinout, BZB84-B3V0-QR application, or BZB84-B3V0-QR equivalent, this device serves as a space-efficient dual-voltage reference for rail clamping, overvoltage protection, and precision biasing in compact automotive ECUs and sensor interfaces.
Technical Context
This dual common-anode Zener diode integrates two independent 3.0 V Zener junctions sharing one anode terminal, enabling bidirectional clamping or dual-rail referencing from a single footprint. It operates with 5 mA test current and exhibits 95 Ω typical differential resistance at that condition.
Its temperature coefficient is 0.0 mV/K at 5 mA, indicating near-zero voltage drift across temperature for stable reference performance. The device supports non-repetitive surge handling up to 40 W (100 µs square wave) and operates within −55 °C to +150 °C ambient range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.94 V to 3.06 V at IZ = 5 mA - tight ±2 % tolerance enables accurate 3.0 V reference without trimming |
| Differential Resistance rdif | 95 Ω max at IZ = 5 mA - low impedance ensures stable regulation under load variation |
| Reverse Current IR | 10 µA max at VR = 1.0 V - low leakage preserves battery life in always-on automotive modules |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sufficient for continuous regulation in small-signal power rails |
| Non-repetitive Peak Power | 40 W at tp = 100 µs - handles ESD transients and load-dump spikes in automotive environments |
| Junction Temperature | 150 °C max - supports operation in engine bay and under-hood applications |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TC, and ESD testing |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node requiring 3.0 V clamping or reference; reverse-biased during Zener operation |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second 3.0 V Zener path - enables dual-rail or bidirectional clamp topology |
| 3 (CA) | Common Anode | Shared anode connection; ties both Zener junctions to system ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode Zener topology | Reduces PCB area by 50 % vs. two discrete SOT23 Zeners while maintaining independent cathode control |
| ±2 % Zener voltage tolerance (B-series) | Eliminates need for post-assembly calibration in 3.0 V reference circuits for CAN transceivers or ADC references |
| AEC-Q101 qualification | Meets automotive stress test requirements including 1000-cycle temperature cycling and 1000-hour HTOL |
| Low thermal resistance Rth(j-sp) | 100 K/W from junction to solder point - improves power handling in thermally constrained layouts |
| 100 µs surge rating | Withstands ISO 7637-2 Pulse 1/2a/3a transients without derating when used with appropriate series impedance |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply rail subject to load dump and battery reversal. IC Role / Device Role / Timing Role: Dual-Zener clamps both positive overvoltage (via K1–CA) and negative transients (via K2–CA) using shared anode grounding strategy. Use Value: Prevents transceiver latch-up during 24 V load dump events while occupying only one SOT23 footprint. |
Use Scenario: Providing matched 3.0 V reference for dual-channel analog front-end in pressure/temperature sensor module. IC Role / Device Role / Timing Role: Supplies identical, tightly-toleranced reference voltage to two independent ADC inputs via separate cathodes. Use Value: Ensures <1 LSB gain error between channels without requiring two matched discrete Zeners or external trimming. |
| Automotive Camera ECU Power Sequencing | USB-C Port Overvoltage Protection |
Use Scenario: Biasing reset supervisor IC requiring stable 3.0 V reference during cold-crank (5.5 V battery sag). IC Role / Device Role / Timing Role: Acts as low-current shunt regulator to maintain clean 3.0 V for supervisor enable input during brown-out conditions. Use Value: Maintains reset assertion integrity down to 2.8 V input due to low dynamic impedance and minimal knee curvature. |
Use Scenario: Clamping VBUS line against 20 V USB PD fault conditions in portable automotive accessories. IC Role / Device Role / Timing Role: Fast-acting dual-Zener limits VBUS to 3.0 V above ground and 3.0 V below ground relative to common reference plane. Use Value: Protects downstream USB controller ICs from destructive overvoltage without adding TVS capacitance that degrades signal integrity. |
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-C3V0-Q | ±5 % tolerance (vs. ±2 %); higher max IR (10 µA → 20 µA); same VZ range and package | Acceptable where cost sensitivity outweighs precision; less suitable for ADC reference or high-accuracy biasing | Select when budget constraints dominate and 3.0 V stability > ±50 mV is sufficient |
| MMBZ5226BS | Single Zener (3.0 V, ±5 %), SOT323 package; no dual-cathode capability; lower Ptot (200 mW) | Cannot implement bidirectional clamping or dual-rail referencing; requires two devices for equivalent function | Choose only if board space allows two devices and dual functionality is unnecessary |
Compared with BZB84-C3V0-Q, the BZB84-B3V0-QR offers tighter voltage control critical for reference accuracy; versus MMBZ5226BS, it delivers integrated dual functionality and higher surge robustness in the same footprint-making it optimal for space-constrained automotive voltage management.
Availability
BZB84-B3V0-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor modules, and USB-C accessory power protection requiring stable component supply, AEC-Q101 compliance, and SMT manufacturability.
Supply support for BZB84-B3V0-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 consumer markets.
The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive environments.
FAQ
What is the maximum continuous reverse current the BZB84-B3V0-QR can sustain at 25 °C?
The device supports a maximum continuous forward current of 200 mA per diode, but for Zener operation, the recommended DC test current is 5 mA. At this level, it maintains 2.94–3.06 V regulation with 95 Ω dynamic impedance. Sustained operation above 5 mA requires thermal derating per the 300 mW total power limit and ambient temperature.
Can BZB84-B3V0-QR be used for bidirectional ESD protection on a data line?
No - while its dual cathodes allow symmetrical clamping, it lacks the low capacitance (<1 pF) and fast response (<1 ns) required for high-speed data line ESD protection. Its typical capacitance is 450 pF at 0 V, making it suitable only for low-frequency power rail clamping, not signal-line protection.
How does the common-anode configuration affect PCB layout compared to dual discrete Zeners?
The common-anode pin (Pin 3) must connect to a low-impedance ground or reference plane. This eliminates the need for two separate anode traces, reduces loop area for transient currents, and simplifies routing in dense layouts - especially beneficial in multi-layer automotive PCBs where ground plane access is prioritized.
Is the 40 W non-repetitive peak power rating applicable to both diodes simultaneously?
No - the 40 W rating applies per diode, not per package. When both diodes conduct simultaneously (e.g., during bipolar surge), total dissipation must remain within the 300 mW steady-state limit. The 40 W surge rating assumes only one diode is active during the 100 µs pulse, with junction pre-heated to 25 °C.
BZB84-B3V0-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 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 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-B3V0-QR FAQ
1.How can I place an order for BZB84-B3V0-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B3V0-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-B3V0-QR reliable?
The price and inventory of BZB84-B3V0-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-B3V0-QR is usually 5 days.
3.What payment methods are accepted for BZB84-B3V0-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B3V0-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B3V0-QR?
BZB84-B3V0-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B3V0-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-B3V0-QR?
For technical support, including BZB84-B3V0-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B3V0-QR requirements.
6.How does Aetrix verify that BZB84-B3V0-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-B3V0-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-B3V0-QR meets industry standards.
7.What is the process for return or replacement of BZB84-B3V0-QR?
All BZB84-B3V0-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B3V0-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-B3V0-QR part is unused and in its original packaging.
Return procedure for BZB84-B3V0-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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