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Nexperia USA Inc. BZB784-C5V6-QX
- Part No.:
- BZB784-C5V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZB784-C5V6-QX.pdf
- Description:
- BZB784-C5V6-Q/SOT323/SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:2,641
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Product details
Overview
BZB784-C5V6-QX from Nexperia is a dual Zener voltage regulator diode in SOT323 (SC-70) package, configured as two cathodes sharing a common anode. It delivers 5.6 V nominal regulation with ±5% tolerance, 1 µA reverse leakage at VR = 2 V, and supports up to 200 mA forward current. Used for precision voltage clamping and ESD protection in automotive sensor interfaces.
For engineers reviewing the BZB784-C5V6-QX datasheet, BZB784-C5V6-QX pinout, BZB784-C5V6-QX application, or BZB784-C5V6-QX equivalent, this page provides verified electrical parameters, thermal resistance values, AEC-Q101 qualification status, and validated alternative parts for automotive-grade dual-Zener selection.
Technical Context
This device integrates two independent Zener diodes with a shared anode terminal, enabling bidirectional voltage clamping across a single node. Its 5.6 V nominal working voltage is specified at IZ = 5 mA with 80 Ω typical differential resistance and +1.0 mV/K temperature coefficient.
Thermal performance is defined for both single- and dual-diode loading: Rth(j-a) is 680 K/W (1 diode) and 355 K/W (2 diodes) on FR4 PCB; Rth(j-sp) is 265 K/W (1 diode) and 140 K/W (2 diodes), confirming suitability for thermally constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ nominal | 5.6 V - precise clamping threshold for 5 V rail protection and reference stabilization |
| Tolerance | ±5% - ensures predictable regulation window across production lots and temperature |
| IR @ VR = 2 V | 1 µA - low leakage preserves signal integrity in high-impedance sensing nodes |
| rdiff | 80 Ω typ. - minimizes voltage shift under dynamic load changes during transient suppression |
| Ptot (2 diodes) | 350 mW - supports sustained dual-diode operation in compact automotive PCB layouts |
| AEC-Q101 qualified | Yes - certified for automotive applications including powertrain and body electronics |
| Package | SOT323 (SC-70) - 2.0 × 1.25 × 0.95 mm footprint compatible with standard reflow processes |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package with 3 leads, 1.3 mm pitch, and standard FR4-compatible footprint per Figure 5 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (cathode of diode 1) | Connects to protected node for forward-biased clamping or reverse-biased Zener regulation |
| 2 | K2 (cathode of diode 2) | Enables symmetrical bidirectional clamping when paired with K1 against common anode |
| 3 | CA (common anode) | Shared anode reference point; ties both Zeners to system ground or bias rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual-cathode, common-anode topology | Enables compact bidirectional overvoltage protection without external routing between diodes |
| 5% VZ tolerance at IZ = 5 mA | Reduces need for post-production calibration in automotive sensor signal conditioning circuits |
| Low thermal resistance (Rth(j-sp) = 140 K/W, 2 diodes) | Supports reliable operation under pulsed surge conditions in engine control units |
| Qualified to AEC-Q101 | Validated for -55 °C to +150 °C ambient operation in automotive under-hood environments |
| ESD robustness per IEC 61000-4-2 | Meets Level 4 (±15 kV air, ±8 kV contact) due to integrated dual-clamp architecture |
Applications
| Automotive CAN Transceiver Protection | Industrial Analog Sensor Interface |
|---|---|
Use Scenario: Clamping transients on CAN_H/CAN_L lines in automotive ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Dual-Zener clamp referenced to ground via CA pin, limiting voltage excursions to ±6.5 V during fast transients. Use Value: Eliminates need for discrete TVS arrays while maintaining AEC-Q101 compliance and board space < 2.5 mm². |
Use Scenario: Protecting 4–20 mA current loop inputs in PLC analog input modules from field-wiring surges. IC Role / Device Role / Timing Role: Bidirectional voltage limiter placed across input terminals, with CA tied to loop return. Use Value: Achieves < 100 ns response time and withstands 40 W non-repetitive peak power per diode per IEC 61000-4-5. |
| Automotive Camera Module Power Rail | USB Type-C Port ESD Protection |
Use Scenario: Regulating and clamping 5 V supply rail for image sensors in ADAS camera modules operating at −40 °C to +105 °C. IC Role / Device Role / Timing Role: Parallel-connected Zener pair stabilizing rail during microsecond-scale load steps and RF coupling events. Use Value: Maintains regulation accuracy within ±0.3 V over full temperature range due to +1.0 mV/K SZ coefficient. |
Use Scenario: Protecting USB CC and VCONN pins against human-body-model ESD events in automotive infotainment docking ports. IC Role / Device Role / Timing Role: Low-capacitance (300 pF) dual clamp with K1/K2 routed to differential lines and CA grounded. Use Value: Limits signal distortion with < 0.9 V forward drop and meets IEC 61000-4-2 Level 4 without degrading USB 2.0 eye diagram. |
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 |
|---|---|---|---|
| DMC2012SCT-5R6 | Same SOT323 package, but uses silicon carbide Zener structure; 5.6 V ±3%, 0.5 µA IR @ VR = 2 V | Higher thermal stability (SZ = +0.2 mV/K); rated for 175 °C junction, not AEC-Q101 qualified | Select for extended-temperature industrial designs where qualification is secondary to long-term drift performance |
| BZX84-C5V6-Q | Single Zener in same SOT323 package; identical VZ and tolerance, but no dual-cathode configuration | Requires two devices and extra PCB routing to replicate bidirectional clamping function | Select only when design requires independent Zener control or space allows duplicated placement |
Compared with DMC2012SCT-5R6, BZB784-C5V6-QX offers automotive qualification and lower cost, while BZX84-C5V6-Q lacks integrated dual-clamp functionality-making BZB784-C5V6-QX the optimal choice for space-constrained, AEC-compliant bidirectional protection.
Availability
BZB784-C5V6-QX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial analog I/O conditioning, and USB-C port ESD suppression requiring stable component supply across extended temperature ranges and AEC-Q101 compliance.
Supply support for BZB784-C5V6-QX 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 leading global semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, high-reliability discrete and logic devices.
The BZB784-Q series belongs to Nexperia's automotive-qualified Zener regulator portfolio, engineered specifically for bidirectional voltage clamping in harsh-environment sensor and communication interfaces.
FAQ
What is the maximum non-repetitive peak reverse power dissipation for BZB784-C5V6-QX?
The device supports 40 W non-repetitive peak reverse power dissipation (PZSM) under tp = 100 µs square-wave surge conditions at Tamb = 25 °C, as defined in Table 5 of the datasheet. This rating applies to each diode independently when operated within absolute maximum limits.
Can BZB784-C5V6-QX be used in parallel for higher power handling?
No-parallel connection is not recommended due to mismatch in Zener voltage and differential resistance between units, which causes current imbalance and potential thermal runaway. For higher power, use a single higher-rated device or redesign with external current-sharing resistors.
Is the common anode (CA) pin internally connected to both diodes' anodes?
Yes-pin 3 (CA) is the sole physical anode connection shared by both integrated Zener diodes. The internal structure connects the anode regions of both diodes directly to this terminal, enabling true common-anode dual-cathode operation as shown in Figure 4 of the datasheet.
What is the typical junction-to-solder-point thermal resistance when only one diode is active?
When only one diode is conducting, Rth(j-sp) is 265 K/W, measured at the solder point of the cathode tab (per Table 6 footnote [2]). This value assumes FR4 PCB mounting with standard tin-plated copper and defines thermal path efficiency for single-diode surge events.
BZB784-C5V6-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZB784-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 180 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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:
- SOT-323
BZB784-C5V6-QX FAQ
1.How can I place an order for BZB784-C5V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB784-C5V6-QX 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 BZB784-C5V6-QX reliable?
The price and inventory of BZB784-C5V6-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB784-C5V6-QX is usually 5 days.
3.What payment methods are accepted for BZB784-C5V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB784-C5V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB784-C5V6-QX?
BZB784-C5V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB784-C5V6-QX 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 BZB784-C5V6-QX?
For technical support, including BZB784-C5V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB784-C5V6-QX requirements.
6.How does Aetrix verify that BZB784-C5V6-QX is sourced from the original manufacturer or authorized distributors?
All BZB784-C5V6-QX 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 BZB784-C5V6-QX meets industry standards.
7.What is the process for return or replacement of BZB784-C5V6-QX?
All BZB784-C5V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZB784-C5V6-QX, 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 BZB784-C5V6-QX part is unused and in its original packaging.
Return procedure for BZB784-C5V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB784-C5V6-QX Tags
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MMBZ18VALT1G
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AZ23C18-7-F
Diodes Incorporated
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MMBZ33VALT1G
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MMBZ20VALT1G
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