My Inquiry
My Account
Nexperia USA Inc. BZB784-C2V4-QX
- Part No.:
- BZB784-C2V4-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZB784-C2V4-QX.pdf
- Description:
- BZB784-C2V4-Q/SOT323/SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:8,060
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZB784-C2V4-Q from Nexperia is a dual Zener voltage regulator diode in SOT323 (SC-70) package, configured as two cathodes (K1, K2) sharing a common anode (CA), with nominal 2.4 V working voltage, ±5% tolerance, and 350 mW total power dissipation. It delivers low-power regulation and bidirectional ESD/surge protection in space-constrained automotive and industrial circuits.
For engineers reviewing the BZB784-C2V4-Q datasheet, BZB784-C2V4-Q pinout, BZB784-C2V4-Q application, or BZB784-C2V4-Q equivalent, this device supports dual-rail clamping, AEC-Q101-qualified operation up to 150 °C junction temperature, and precise 2.4 V reference stability at 5 mA test current - critical for sensor biasing, I/O line protection, and low-voltage rail regulation.
Technical Context
This double Zener diode integrates two independent 2.4 V Zener elements in a single SC-70 package with shared anode topology, enabling symmetrical bidirectional clamping across a signal line or differential pair. Its 275 Ω typical differential resistance at 5 mA and −1.3 mV/K temperature coefficient ensure stable regulation under varying load and thermal conditions.
The device operates within a 2.2 V to 2.6 V working voltage range at 5 mA, supports up to 200 mA forward current, and withstands non-repetitive 40 W peak reverse power surges (100 µs square wave). Thermal resistance from junction to ambient is 355 K/W when both diodes are loaded on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 2.4 V nominal (2.2–2.6 V range at IZ = 5 mA); enables precise low-voltage reference and clamping |
| Tolerance | ±5%; ensures predictable regulation threshold without post-production trimming |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; defines conduction loss during forward-biased surge events |
| Total Power Dissipation | 350 mW max at Tamb = 25 °C (2 diodes loaded); sets continuous thermal budget on standard FR4 PCB |
| Differential Resistance (rdiff) | 275 Ω typ at IZ = 5 mA; determines regulation stiffness and output voltage variation under load changes |
| Reverse Current (IR) | 50 µA max at VR = 1 V; specifies leakage level below breakdown, critical for low-power standby integrity |
| Junction Temperature | 150 °C max; supports operation in under-hood automotive environments and high-ambient industrial enclosures |
Pinout & Package
Package: SOT323 (SC-70), plastic surface-mount package measuring 2.0 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch and tin-plated copper leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node or protected signal line; reverse-biased during Zener operation |
| 2 (K2) | Cathode of Diode 2 | Enables second regulated path or complementary clamping polarity; shares anode with K1 |
| 3 (CA) | Common Anode | Single connection point for supply rail or ground reference; establishes bidirectional clamping architecture |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics |
| ±5% VZ tolerance | Reduces need for external calibration and supports tighter system-level voltage margining |
| 2.4 V nominal Zener voltage | Matches low-voltage logic rails (e.g., 2.5 V/3.3 V I/O) and sensor excitation requirements |
| 350 mW total power rating | Supports sustained clamping in CAN/LIN bus nodes and microcontroller GPIO protection |
| SC-70 footprint compatibility | Enables high-density layout on compact PCBs while maintaining reflow-soldering manufacturability |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure or temperature sensors in engine control units against load dump and ESD transients. IC Role / Device Role / Timing Role: Dual-Zener clamp limiting signal swing between VCC + 0.9 V and VREF − 2.4 V relative to common anode. Use Value: Maintains signal integrity below 2.6 V upper clamp and 2.2 V lower clamp while surviving 40 W surge pulses. |
Use Scenario: Safeguarding PLC digital input channels exposed to field wiring surges and contact bounce. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor tied between input line and 2.4 V reference rail via common anode. Use Value: Limits fast-rising transients to < ±2.6 V with 50 µA leakage at 1 V reverse bias, preserving input threshold accuracy. |
| Low-Voltage Microcontroller Reset Circuit | USB Data Line ESD Clamp |
Use Scenario: Generating a stable 2.4 V reset threshold for ultra-low-power MCUs operating from 2.5 V supplies. IC Role / Device Role / Timing Role: Precision Zener reference feeding comparator input; K1 and CA define regulated reference voltage. Use Value: Delivers ±5% voltage accuracy over temperature, eliminating need for external voltage dividers or trimming. |
Use Scenario: Protecting USB 2.0 D+ and D− lines from human-body-model (HBM) ESD events per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Dual-cathode configuration allows symmetric clamping to VDD and GND using one common anode connection. Use Value: Achieves sub-1 ns response time and 50 µA leakage at 1 V, meeting USB signal integrity and eye-diagram requirements. |
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 |
|---|---|---|---|
| MMBZ5221BS-7-F | Single Zener (3.0 V), SOT-323, no common-anode dual configuration | Lacks bidirectional clamping capability; requires two devices for equivalent function | Select only if discrete single-Zener implementation is preferred and board area is not constrained |
| BZX84-C2V4 | Single Zener (2.4 V), SOT-23, higher 500 mW Ptot, no dual-diode topology | Cannot provide simultaneous positive/negative rail clamping without external circuitry | Choose when higher power handling is required and dual-clamp functionality is unnecessary |
Compared with MMBZ5221BS-7-F and BZX84-C2V4, the BZB784-C2V4-Q uniquely integrates two matched 2.4 V Zeners with shared anode in one SC-70 package - reducing component count by 50%, minimizing parasitic inductance in high-speed clamping paths, and ensuring identical thermal tracking between clamping elements.
Availability
BZB784-C2V4-Q is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, and low-voltage microcontroller reset circuits requiring stable component supply, AEC-Q101 compliance, and space-efficient dual-Zener integration.
Supply support for BZB784-C2V4-Q 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and consumer markets.
The BZB784-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and bidirectional ESD protection in harsh automotive environments and space-sensitive industrial systems.
FAQ
What is the maximum non-repetitive peak reverse power the BZB784-C2V4-Q can handle?
The BZB784-C2V4-Q supports up to 40 W non-repetitive peak reverse power dissipation for 100 µs square-wave surges at 25 °C ambient, verified per IEC 60134 absolute maximum ratings. This rating applies when both diodes are active and mounted on standard FR4 PCB with single-sided copper.
How does the common-anode configuration affect circuit design?
The common-anode (CA) pin enables symmetrical bidirectional clamping: connecting K1 and K2 to separate signal lines while tying CA to a reference rail (e.g., 2.4 V or ground) creates matched positive and negative voltage limits. This eliminates timing skew between clamping paths and ensures thermal coupling between Zener elements.
Is the 2.4 V Zener voltage specified at a particular test current?
Yes, the nominal 2.4 V working voltage is defined at IZ = 5 mA, with a guaranteed range of 2.2 V to 2.6 V. The datasheet also provides differential resistance (275 Ω typ) and temperature coefficient (−1.3 mV/K) measured under the same 5 mA condition.
Can BZB784-C2V4-Q replace single-Zener diodes in existing designs?
It can replace two discrete 2.4 V Zeners in common-cathode or common-anode configurations, but requires PCB layout revision to accommodate the three-terminal SOT323 pinout. Pin 3 (CA) must connect to the shared reference node, while Pins 1 and 2 route to respective protected lines - not a drop-in replacement for single-diode footprints.
BZB784-C2V4-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):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 180 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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:
- SOT-323
BZB784-C2V4-QX FAQ
1.How can I place an order for BZB784-C2V4-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB784-C2V4-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-C2V4-QX reliable?
The price and inventory of BZB784-C2V4-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-C2V4-QX is usually 5 days.
3.What payment methods are accepted for BZB784-C2V4-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB784-C2V4-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB784-C2V4-QX?
BZB784-C2V4-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB784-C2V4-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-C2V4-QX?
For technical support, including BZB784-C2V4-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB784-C2V4-QX requirements.
6.How does Aetrix verify that BZB784-C2V4-QX is sourced from the original manufacturer or authorized distributors?
All BZB784-C2V4-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-C2V4-QX meets industry standards.
7.What is the process for return or replacement of BZB784-C2V4-QX?
All BZB784-C2V4-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZB784-C2V4-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-C2V4-QX part is unused and in its original packaging.
Return procedure for BZB784-C2V4-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB784-C2V4-QX Tags
-
MMBZ18VALT1G
onsemi
-
AZ23C18-7-F
Diodes Incorporated
-
MMBZ6V2ALT1G
onsemi
-
MMBZ5V6ALT1G
onsemi
-
MMBZ6V8ALT1G
onsemi
-
MMBZ5V6ALT3G
onsemi
-
MMBZ33VALT1G
onsemi
-
MMBZ9V1ALT1G
onsemi
-
MMBZ20VALT1G
onsemi
-
SZMMBZ27VALT1G
onsemi
-
MMBZ15VALT1G
onsemi
-
MMBZ12VALT1G
onsemi
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
