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Nexperia USA Inc. BZB84-C33-QR
- Part No.:
- BZB84-C33-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C33-QR.pdf
- Description:
- BZB84-C33-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,288
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Product details
Overview
BZB84-C33-QR from Nexperia is a dual common-anode Zener diode pair in SOT23 package, rated for 33 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification-used for precision voltage regulation and overvoltage protection in automotive power rails and sensor interface circuits.
For engineers reviewing the BZB84-C33-QR datasheet, BZB84-C33-QR pinout, BZB84-C33-QR application, or BZB84-C33-QR equivalent, key selection criteria include dual-Zener configuration with shared anode, thermal resistance (Rth(j-a) = 417 K/W), non-repetitive surge capability (40 W, 100 µs), and automotive-grade reliability under −55 °C to +150 °C ambient conditions.
Technical Context
This dual-Zener device integrates two independent Zener diodes sharing a common anode terminal (Pin 3), enabling bidirectional clamping or dual-rail regulation from a single footprint. Each diode operates at 33 V nominal Zener voltage with ±5 % tolerance (C-series), 23.1–33.4 V dynamic impedance range at IZ = 2 mA, and temperature coefficient of +5.4 mV/K at IZ = 2 mA.
Designed for automotive environments, it meets AEC-Q101 stress requirements including Tj up to 150 °C, storage temperature from −65 °C to +150 °C, and robust ESD performance. Its SOT23 package supports surface-mount reflow/wave soldering per IPC-7095 guidelines with defined thermal pad layout and solder mask openings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, ±5 % tolerance (C-series); ensures stable reference within 31.0–35.0 V at IZ = 2 mA for regulation accuracy. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB; defines continuous DC power handling before thermal derating begins. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for 100 µs square-wave surge; enables transient overvoltage suppression without failure in automotive load-dump events. |
| Differential Resistance (rdif) | 325 Ω max at IZ = 2 mA; determines regulation stiffness-lower values improve voltage stability under varying load current. |
| Reverse Current (IR) | 0.05 µA max at VR = 27 V; confirms low leakage below breakdown, critical for battery-powered sensor bias networks. |
| Junction Temperature (Tj) | 150 °C maximum; sets upper thermal limit for reliable operation in under-hood automotive modules. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch), qualified per AEC-Q101, with tin-plated terminations and standard FR4 PCB footprint per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode, Diode 1) | Connects to regulated node for first 33 V Zener path; reverse-biased during clamping. |
| 2 | K2 (Cathode, Diode 2) | Independent cathode for second 33 V Zener; enables dual-rail or complementary clamping topology. |
| 3 | CA (Common Anode) | Shared anode reference point-tied to system ground or supply rail to define bidirectional clamping reference. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode Zener configuration | Enables compact bidirectional voltage clamping or dual-rail regulation without discrete anode routing. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per JESD22 standards. |
| ±5 % Zener voltage tolerance (C-series) | Provides predictable regulation window for cost-sensitive designs where tighter tolerance is not required. |
| 417 K/W junction-to-ambient thermal resistance | Supports thermal management on standard FR4 PCBs without heatsinking for continuous 300 mW operation. |
| 100 µs, 40 W non-repetitive surge rating | Meets ISO 7637-2 Pulse 1/2a/5a immunity requirements for 12 V automotive systems. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 33 V auxiliary rail powering LIN transceivers and LED drivers in BCM subassemblies. IC Role / Device Role / Timing Role: Dual-Zener provides redundant overvoltage clamp on both sides of a split-rail LDO output, preventing latch-up during load dump. Use Value: Eliminates need for two discrete SOT23 Zeners and reduces PCB area by 35 % while maintaining AEC-Q101 compliance. |
Use Scenario: Biasing and protecting bridge-based pressure sensor outputs in industrial process controllers. IC Role / Device Role / Timing Role: Clamps differential sensor output swing to ±33 V relative to common-mode reference, preserving ADC input integrity. Use Value: Common-anode architecture allows symmetric clamping without adding offset error from mismatched discrete diodes. |
| Automotive Infotainment Power Sequencing | Telecom Line Interface Unit (LIU) |
Use Scenario: Protecting 33 V display backlight driver ICs during cold-crank and jump-start transients. IC Role / Device Role / Timing Role: Absorbs 40 W surges for 100 µs on VBACKLIGHT rail, holding voltage below IC absolute maximum rating. Use Value: Meets ISO 16750-2 Section 4.6.2 test requirement for 12 V system surge immunity without external TVS. |
Use Scenario: Providing 33 V reference and overvoltage protection for analog front-end circuitry in DSL line cards. IC Role / Device Role / Timing Role: Stabilizes bias voltage for op-amp gain stages while clamping induced lightning surges on twisted-pair lines. Use Value: Low 0.05 µA leakage at 27 V prevents signal drift in high-impedance feedback networks. |
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 MMBZ5267ET1G | Single 33 V Zener (±5 %), SOT23, 500 mW Ptot, no dual configuration | Requires two devices and external anode tie for dual-clamp function; higher assembly cost | Select when higher continuous power (500 mW) is needed and board space permits discrete placement. |
| Vishay BZX84-C33-TP | Single 33 V Zener (±5 %), SOT23, 300 mW Ptot, AEC-Q101 qualified, no dual configuration | Lacks common-anode dual-diode topology-cannot perform bidirectional clamping from one footprint | Choose only for single-rail regulation where dual functionality is unnecessary and sourcing favors Vishay. |
Compared with MMBZ5267ET1G and BZX84-C33-TP, BZB84-C33-QR uniquely delivers dual 33 V Zener paths in one SOT23 package with AEC-Q101 qualification-reducing component count, improving layout symmetry, and enabling true bidirectional clamping without interconnect parasitics.
Availability
BZB84-C33-QR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment power sequencing, and telecom line interface units requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZB84-C33-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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.
The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, ESD protection, and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum non-repetitive peak reverse current for BZB84-C33-QR?
The maximum non-repetitive peak reverse current (IZSM) is 0.9 A at 100 µs pulse width and Tj = 25 °C prior to surge, derived from the 40 W PZSM rating and 33 V nominal Zener voltage. This value is confirmed in Table 9 of the datasheet for C33 variants and applies only to single-event transients-not repetitive operation.
How does the common-anode configuration affect circuit design?
The common-anode (Pin 3) forces both Zener diodes to share the same reference potential, enabling symmetrical bidirectional clamping between two nodes (e.g., differential signal lines) or dual-rail regulation referenced to ground. It eliminates the need for separate anode traces, reducing layout complexity and parasitic inductance in high-speed transient suppression paths.
Is BZB84-C33-QR suitable for use in 24 V commercial vehicle systems?
Yes-its 33 V Zener voltage provides adequate margin above 24 V nominal systems (including 28 V alternator regulation), and its AEC-Q101 qualification covers extended temperature range (−55 °C to +150 °C), surge immunity, and humidity resistance required for commercial vehicle ECUs. The 40 W surge rating exceeds ISO 7637-2 Pulse 5a requirements for 24 V systems.
What is the typical Zener voltage temperature coefficient for this part?
The typical temperature coefficient (SZ) is +5.4 mV/K at IZ = 2 mA, as specified in Table 9 for the C33 variant. This positive coefficient means the Zener voltage increases by approximately 5.4 mV per degree Celsius rise in junction temperature-critical for predicting regulation drift across operating temperature ranges in automotive applications.
BZB84-C33-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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 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-C33-QR FAQ
1.How can I place an order for BZB84-C33-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C33-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-C33-QR reliable?
The price and inventory of BZB84-C33-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-C33-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C33-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C33-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C33-QR?
BZB84-C33-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C33-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-C33-QR?
For technical support, including BZB84-C33-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C33-QR requirements.
6.How does Aetrix verify that BZB84-C33-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C33-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-C33-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C33-QR?
All BZB84-C33-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C33-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-C33-QR part is unused and in its original packaging.
Return procedure for BZB84-C33-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C33-QR Tags
-
MMBZ18VALT1G
onsemi
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AZ23C18-7-F
Diodes Incorporated
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MMBZ6V2ALT1G
onsemi
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MMBZ5V6ALT1G
onsemi
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MMBZ6V8ALT1G
onsemi
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MMBZ5V6ALT3G
onsemi
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MMBZ33VALT1G
onsemi
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MMBZ9V1ALT1G
onsemi
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MMBZ20VALT1G
onsemi
-
SZMMBZ27VALT1G
onsemi
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MMBZ15VALT1G
onsemi
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MMBZ12VALT1G
onsemi
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