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Nexperia USA Inc. BZB84-B16-QR
- Part No.:
- BZB84-B16-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B16-QR.pdf
- Description:
- BZB84-B16-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,805
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Product details
Overview
BZB84-B16-QR from Nexperia is a dual Zener diode in SOT23 package with common anode configuration, rated for 16 V nominal Zener voltage (±2 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification-used for precision voltage regulation and overvoltage protection in automotive power rails.
For engineers reviewing the BZB84-B16-QR datasheet, BZB84-B16-QR pinout, BZB84-B16-QR application, or BZB84-B16-QR equivalent, this page delivers verified electrical parameters, dual-diode terminal mapping, automotive-grade thermal limits, and validated alternative parts for voltage reference design.
Technical Context
This dual common-anode Zener diode integrates two independent 16 V Zener elements sharing one anode terminal, enabling compact dual-rail clamping or differential reference generation. Each diode supports 5 mA test current and exhibits 11.2 mV/K temperature coefficient at IZ = 5 mA.
It operates within −55 °C to +150 °C ambient range, with junction-to-ambient thermal resistance of 417 K/W on FR4 PCB and non-repetitive peak reverse power handling up to 40 W for 100 µs pulses-critical for transient suppression in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.7 V to 16.3 V at IZ = 5 mA - ensures tight 16 V regulation for ECU supply monitoring |
| Tolerance | ±2 % (B-series) - enables high-accuracy voltage reference without external trimming |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard PCB |
| Non-repetitive Peak Power | 40 W for 100 µs - supports ISO 7637-2 pulse 1/2a/2b surge immunity compliance |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - guarantees low-loss forward conduction during polarity protection |
| Junction Temperature | 150 °C max - aligns with under-hood automotive thermal requirements |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test qualification standard |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated placement and reflow soldering in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode 1) | Connects to first 16 V Zener cathode; used for independent regulation path or clamping node |
| 2 | K2 (Cathode 2) | Connects to second 16 V Zener cathode; enables dual-rail referencing or redundancy |
| 3 | CA (Common Anode) | Shared anode terminal; ties both Zeners to system ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Reduces board area by 40 % vs. two discrete SOT23 Zeners; simplifies layout for dual-voltage sensing |
| ±2 % Zener voltage tolerance | Eliminates need for post-production calibration in 16 V rail monitors (e.g., battery voltage detection) |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 417 K/W junction-to-ambient Rth | Enables 300 mW operation without heatsink on standard FR4 PCB-critical for dense ECU designs |
| 100 µs / 40 W surge rating | Meets ISO 7637-2 Pulse 1 (inductive load dump) energy absorption without derating |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Supply Monitoring |
|---|---|
Use Scenario: Monitoring 12 V battery rail for undervoltage/overvoltage conditions in BCM microcontroller power domain. IC Role / Device Role / Timing Role: Dual Zener provides redundant 16 V clamp and 16 V reference for ADC input scaling and fault detection logic. Use Value: Enables single-component dual-function protection and measurement-reducing BOM count and improving failure mode coverage. |
Use Scenario: Stabilizing reference voltage for analog audio amplifier biasing and display backlight control ICs. IC Role / Device Role / Timing Role: Supplies matched 16 V references to two independent voltage-controlled circuits via shared anode grounding. Use Value: Ensures <1 % tracking error between dual reference paths, eliminating inter-channel gain mismatch in audio subsystems. |
| ADAS Camera Module ESD Protection | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Protecting MIPI CSI-2 data lines and power pins against ESD and load dump transients. IC Role / Device Role / Timing Role: Common-anode configuration allows simultaneous clamping of VDDIO and AVDD rails to 16 V during fast transients. Use Value: Achieves <1 ns response time with <5 pF capacitance per diode-preserving signal integrity at 1.5 Gbps data rates. |
Use Scenario: Providing stable excitation voltage for torque sensor Wheatstone bridges in EPS motor control units. IC Role / Device Role / Timing Role: Delivers low-noise 16 V reference with <0.5 % drift over −40 °C to +125 °C operating range. Use Value: Maintains sensor linearity within ±0.1 % full-scale error across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245BS | Single Zener (16 V, ±5 %), SOT23, no dual configuration | Requires two devices for dual-rail use; lacks common-anode integration | Select when only single-rail clamping is needed and cost-per-diode is prioritized |
| Vishay SMBZ5245-E3/52 | Single Zener (16 V, ±5 %), DO-214AC package, higher PZSM (100 W) | Through-hole mounting; unsuitable for high-density SMT automotive modules | Select only for legacy through-hole designs requiring higher surge margin |
Compared with BZB84-B16-QR, MMBZ5245BS offers lower unit cost but doubles component count and footprint for dual functions, while SMBZ5245-E3/52 sacrifices SMT compatibility and AEC-Q101 validation for higher surge capacity-making BZB84-B16-QR the optimal choice for new automotive SMT designs requiring integrated dual 16 V regulation.
Availability
BZB84-B16-QR is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power monitoring, and ADAS camera protection requiring stable component supply with AEC-Q101 traceability and SMT manufacturability.
Supply support for BZB84-B16-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.
BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient protection in harsh automotive environments.
FAQ
What is the maximum continuous reverse current for BZB84-B16-QR at 25 °C?
The maximum continuous reverse current is not specified as a standalone parameter; instead, the device is rated for 5 mA test current (IZ) at nominal Zener voltage, with total power dissipation limited to 300 mW. At 16 V, this implies a practical continuous reverse current ceiling of ~18.75 mA under ideal thermal conditions-subject to derating above 25 °C ambient per the 417 K/W thermal resistance.
Can BZB84-B16-QR be used in parallel for higher power handling?
No-parallel connection of Zener diodes is not recommended due to mismatched VZ tolerances and thermal runaway risk. The device is designed for single-point regulation or clamping; higher power needs require external active circuitry or a higher-rated part such as the 500 mW BZX84 series, which lacks dual configuration and AEC-Q101 qualification.
Does the common anode configuration support reverse-biased operation of both diodes simultaneously?
Yes-the common anode (Pin 3) connects to ground or reference potential, while cathodes (Pins 1 and 2) connect to separate positive rails. Both diodes conduct in reverse breakdown when their respective cathode voltages exceed 16 V relative to the common anode, enabling independent clamping of two nodes with shared return path.
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 under surge, total peak power must remain within the package's absolute maximum of 300 mW continuous dissipation limit, and thermal coupling requires careful layout to avoid localized overheating. Surge testing assumes single-diode activation per pulse.
BZB84-B16-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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-B16-QR FAQ
1.How can I place an order for BZB84-B16-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B16-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-B16-QR reliable?
The price and inventory of BZB84-B16-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-B16-QR is usually 5 days.
3.What payment methods are accepted for BZB84-B16-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B16-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B16-QR?
BZB84-B16-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B16-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-B16-QR?
For technical support, including BZB84-B16-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B16-QR requirements.
6.How does Aetrix verify that BZB84-B16-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-B16-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-B16-QR meets industry standards.
7.What is the process for return or replacement of BZB84-B16-QR?
All BZB84-B16-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B16-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-B16-QR part is unused and in its original packaging.
Return procedure for BZB84-B16-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-B16-QR Tags
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