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Nexperia USA Inc. BZB84-C22-QR
- Part No.:
- BZB84-C22-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C22-QR.pdf
- Description:
- BZB84-C22-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,982
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Product details
Overview
BZB84-C22-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 22 V nominal working voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101-qualified for automotive voltage regulation. It provides stable reference and overvoltage protection in compact space-constrained circuits such as ECU power rails and sensor bias networks.
For engineers reviewing the BZB84-C22-QR datasheet, BZB84-C22-QR pinout, BZB84-C22-QR application, or BZB84-C22-QR equivalent, key selection criteria include dual-Zener configuration with shared anode, ±5 % Zener voltage tolerance at 5 mA, non-repetitive peak reverse current of 1.25 A, thermal resistance of 100 K/W to solder point, and automotive-grade reliability per AEC-Q101.
Technical Context
This dual-Zener device integrates two independent 22 V Zener elements sharing a common anode terminal (Pin 3), enabling bidirectional clamping or dual-rail reference generation from a single footprint. Each diode supports 5 mA test current and exhibits 250 Ω typical differential resistance at that condition.
It operates across −55 °C to +150 °C ambient, with junction temperature limited to 150 °C, and delivers 15.4 mV/K temperature coefficient at 5 mA - critical for precision biasing where thermal drift must be minimized in engine control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 20.8 V to 23.3 V at IZ = 5 mA - defines usable regulation window for 22 V nominal rail |
| Differential Resistance rdif | 250 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Current IR | 0.05 μA max at VR = 17.6 V - ensures low leakage below knee voltage |
| Non-repetitive Peak Current IZSM | 1.25 A at tp = 100 μs - supports transient surge suppression without failure |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power on FR4 PCB |
| Thermal Resistance Rth(j-sp) | 100 K/W - enables accurate junction temperature estimation from solder-point measurement |
| Temperature Coefficient SZ | 15.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius in thermal management design |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, 3-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node requiring 22 V clamping or reference; reverse-biased during regulation |
| 2 (K2) | Cathode of Diode 2 | Enables independent second 22 V regulation path - e.g., dual-supply monitoring or redundancy |
| 3 (CA) | Common Anode | Shared return path; ties both Zeners to system ground or negative rail for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Reduces PCB area by 50 % vs. two discrete SOT23 Zeners while maintaining independent cathodes |
| AEC-Q101 qualification | Validated for automotive underhood environments including thermal cycling, humidity, and mechanical shock |
| ±5 % Zener tolerance (C-series) | Meets cost-sensitive automotive subsystem requirements where tight regulation is secondary to robustness |
| 40 W non-repetitive peak power rating | Withstands ISO 7637-2 pulse 1/2a/2b transients without degradation when properly heatsinked |
| 150 °C maximum junction temperature | Supports operation in high-temperature zones like powertrain ECUs without derating at full ambient range |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Clamp | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Clamps 12 V supply rail against load-dump transients in gasoline/diesel engine control modules. IC Role / Device Role / Timing Role: Dual-Zener acts as passive overvoltage protector - one diode clamps positive surges, the other handles reverse-polarity faults via common anode grounding. Use Value: Eliminates need for separate TVS + Zener pair; withstands 1.25 A surge pulses per diode while maintaining <0.1 % voltage shift after stress. |
Use Scenario: Provides stable 22 V bias voltage for analog front-end amplifiers in industrial pressure/temperature sensors. IC Role / Device Role / Timing Role: Functions as precision shunt reference - CA tied to ground, K1/K2 deliver matched 22 V outputs to dual-channel signal conditioning paths. Use Value: 15.4 mV/K tempco and 250 Ω dynamic impedance ensure <±1.2 % output drift over −40 °C to +125 °C operating range. |
| Automotive Body Control Module (BCM) LED Driver Protection | Medical Diagnostic Equipment Power Sequencing |
Use Scenario: Protects constant-current LED driver ICs from back-EMF spikes generated by relay coils in BCM lighting circuits. IC Role / Device Role / Timing Role: Common-anode configuration allows fast clamping of both positive and negative transients across driver output terminals. Use Value: 40 W peak power rating absorbs 100 μs spikes without latch-up; 0.05 μA leakage prevents false triggering during standby mode. |
Use Scenario: Ensures controlled power-up sequencing between 22 V analog supply and 3.3 V digital core in portable ultrasound units. IC Role / Device Role / Timing Role: Acts as voltage supervisor trigger - Zener breakdown initiates enable signal to downstream LDOs only when 22 V rail reaches regulation. Use Value: Tight 20.8–23.3 V window guarantees reliable turn-on margin above brown-out threshold while rejecting noise below 17.6 V. |
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 |
|---|---|---|---|
| ON Semiconductor MMBZ5247BS | Single 22 V Zener in SOT363; no common-anode dual configuration; 200 mW Ptot | Requires two devices for dual-path operation; higher board area and assembly cost | Select when only one regulated node is needed and AEC-Q101 is not mandatory |
| Vishay BZX84-C22-TP | Single 22 V Zener in SOT23; identical voltage tolerance and power rating but no dual element | Cannot provide simultaneous dual-rail clamping or redundancy without external wiring | Choose for legacy designs using single-Zener footprints where dual functionality is unnecessary |
Compared with MMBZ5247BS and BZX84-C22-TP, BZB84-C22-QR uniquely delivers two matched 22 V Zeners in one AEC-Q101-qualified SOT23 package - reducing component count by 50 %, eliminating inter-device matching variance, and enabling true bidirectional transient suppression with shared thermal path.
Availability
BZB84-C22-QR is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor biasing, BCM LED driver safeguarding, and medical power sequencing requiring stable component supply and long-term lifecycle assurance.
Supply support for BZB84-C22-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 logic, discrete, and MOSFET solutions 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 suppression in harsh automotive environments.
FAQ
What is the maximum continuous forward current for BZB84-C22-QR?
The absolute maximum forward current per diode is 200 mA, as specified in Table 5 (Limiting Values). This rating applies under steady-state conditions with ambient temperature ≤25 °C and assumes standard FR4 PCB mounting with single-sided copper. Exceeding this value risks permanent junction damage due to thermal runaway.
Can BZB84-C22-QR replace two separate single-Zener diodes in a circuit?
Yes - its dual common-anode structure replaces two discrete 22 V Zeners while preserving independent cathode access. Pin 1 and Pin 2 serve as separate cathodes, and Pin 3 is the shared anode. This reduces component count, improves thermal coupling between elements, and eliminates matching discrepancies inherent in discrete pairs.
Is the 22 V Zener voltage specified at a particular test current?
Yes - the nominal 22 V rating is guaranteed at IZ = 5 mA, with actual VZ ranging from 20.8 V to 23.3 V under those conditions. The datasheet also specifies parameters at IZ = 1 mA for low-current applications, where VZ shifts slightly lower due to Zener knee characteristics.
How does the AEC-Q101 qualification impact BZB84-C22-QR's use in non-automotive systems?
AEC-Q101 qualification certifies performance across extended temperature (−55 °C to +150 °C), humidity, mechanical shock, and lifetime reliability - making it suitable for any high-reliability industrial, medical, or aerospace application where environmental robustness is required, even if automotive use is not intended.
BZB84-C22-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):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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-C22-QR FAQ
1.How can I place an order for BZB84-C22-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C22-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-C22-QR reliable?
The price and inventory of BZB84-C22-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-C22-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C22-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C22-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C22-QR?
BZB84-C22-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C22-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-C22-QR?
For technical support, including BZB84-C22-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C22-QR requirements.
6.How does Aetrix verify that BZB84-C22-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C22-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-C22-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C22-QR?
All BZB84-C22-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C22-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-C22-QR part is unused and in its original packaging.
Return procedure for BZB84-C22-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C22-QR Tags
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