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Nexperia USA Inc. BZB784-C7V5-QX
- Part No.:
- BZB784-C7V5-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZB784-C7V5-QX.pdf
- Description:
- BZB784-C7V5-Q/SOT323/SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:7,588
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Product details
Overview
BZB784-C7V5-QX from Nexperia is a dual Zener voltage regulator diode in SOT323 (SC-70) package, configured with common anode and two independent cathodes for bidirectional regulation or dual-rail reference. It delivers 7.5 V nominal Zener voltage (±5% tolerance), 1 µA reverse current at VR = 7 V, and supports ≤200 mA forward current. Used in automotive ESD protection and precision low-power voltage clamping circuits.
For engineers reviewing the BZB784-C7V5-QX datasheet, BZB784-C7V5-QX pinout, BZB784-C7V5-QX application, or BZB784-C7V5-QX equivalent, this page provides verified electrical parameters, thermal resistance values, AEC-Q101 qualification status, and validated alternative parts for dual-Zener regulation in space-constrained automotive PCBs.
Technical Context
This dual-Zener device integrates two monolithic Zener diodes sharing a common anode terminal, enabling symmetrical clamping across positive/negative transients or independent regulation on two signal paths. Its 7.5 V working voltage is specified at IZ = 5 mA with 30 Ω typical differential resistance and +3.6 mV/K temperature coefficient.
Thermal performance is defined for FR4 PCB mounting: Rth(j-a) = 355 K/W (both diodes active), Rth(j-sp) = 140 K/W. The device operates from −55 °C to +150 °C ambient and sustains non-repetitive 40 W peak reverse power for 100 µs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 7.0 V to 7.9 V at IZ = 5 mA - defines clamping threshold for overvoltage protection |
| Reverse Current IR | 1 µA at VR = 7 V - ensures low leakage in standby regulation mode |
| Differential Resistance rdiff | 30 Ω typical at IZ = 5 mA - determines regulation stiffness under load variation |
| Temperature Coefficient SZ | +3.6 mV/K - quantifies VZ drift per degree Celsius rise in junction temperature |
| Total Power Dissipation | 350 mW at Tamb = 25 °C (2 diodes loaded) - sets maximum continuous thermal budget on standard FR4 |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - defines conduction loss during forward-biased operation |
| Non-repetitive Peak Power | 40 W for tp = 100 µs - supports transient surge suppression per IEC 61000-4-5 |
Pinout & Package
Package: SOT323 (SC-70), 3-lead surface-mount plastic package, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, FR4-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Provides dedicated Zener breakdown path for first regulation channel |
| 2 | Cathode (Diode 2) | Enables independent second regulation path with shared anode reference |
| 3 | Common Anode | Serves as unified reference node for bidirectional clamping or dual-rail biasing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and infotainment applications per stress test requirements |
| ±5% VZ tolerance | Ensures predictable clamping window without post-production binning or trimming |
| Low thermal resistance | Rth(j-sp) = 140 K/W enables reliable operation at 150 °C junction temperature |
| E24 voltage range coverage | 20 discrete types from 2.4 V to 15 V support standardized design reuse across platforms |
| Common-anode dual-diode topology | Reduces PCB area vs. two discrete Zeners and eliminates inter-device matching variance |
Applications
| Automotive CAN Transceiver Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping ESD events on CAN_H/CAN_L lines in automotive gateways. IC Role / Device Role / Timing Role: Dual-Zener voltage regulator providing bidirectional rail-to-rail clamping referenced to common ground. Use Value: Limits transient voltages to ±12 V while maintaining <1 µA leakage at 7 V, preserving bus integrity during ISO 10605 testing. |
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation. IC Role / Device Role / Timing Role: Precision 7.5 V reference source with low tempco (+3.6 mV/K) for ratiometric ADC biasing. Use Value: Delivers stable reference under 85 °C ambient with <0.5% total error including tolerance and thermal drift. |
| USB Port ESD Clamp | Low-Power IoT Microcontroller Reset Circuit |
Use Scenario: Protecting USB D+/D− lines against contact discharge in portable medical devices. IC Role / Device Role / Timing Role: Common-anode dual Zener absorbing ±8 kV HBM transients via low-capacitance path (Cd = 150 pF). Use Value: Prevents data corruption without adding signal distortion due to sub-1 nA leakage at 3.3 V operating point. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCUs in battery-powered asset trackers. IC Role / Device Role / Timing Role: Dual-diode configuration used as precision 7.5 V brown-out detector with hysteresis via external resistor divider. Use Value: Enables deterministic reset assertion at 7.0 V with 0.9 V hysteresis window, reducing false triggers in noisy 12 V vehicle power environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5225B-7-F | Single Zener (3.0 V), SOT23 package, no common-anode dual configuration | Requires two devices and layout coordination for dual-rail use; lacks AEC-Q101 rating | Select when only single-rail clamping is needed and automotive qualification is not required |
| BZX84-C7V5 | Single Zener (7.5 V), SOT23, 5% tolerance, but no dual-diode topology or common anode | Cannot perform simultaneous bidirectional clamping; higher board area and routing complexity | Choose for cost-sensitive consumer designs where dual functionality is unnecessary |
Compared with MMBZ5225B-7-F and BZX84-C7V5, the BZB784-C7V5-QX uniquely integrates two matched Zeners in one AEC-Q101-qualified SC-70 package, reducing component count by 50%, eliminating inter-device parameter mismatch, and enabling true symmetrical transient suppression without additional passives.
Availability
BZB784-C7V5-QX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface modules, and USB/USB-C port hardening requiring stable component supply and full traceability.
Supply support for BZB784-C7V5-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 global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZB784-Q series belongs to Nexperia's AEC-Q101-certified Zener regulator portfolio, engineered specifically for compact, thermally robust voltage clamping in automotive signal lines and industrial I/O interfaces.
FAQ
What is the maximum continuous forward current for BZB784-C7V5-QX?
The absolute maximum forward current is 200 mA per diode, as specified in Table 5 of the datasheet under "IF forward current". This rating applies at Tamb = 25 °C on standard FR4 PCB; derating is required above 25 °C ambient based on Rth(j-a) = 355 K/W for dual-diode operation.
Does BZB784-C7V5-QX support bidirectional transient suppression?
Yes - its common-anode dual-cathode structure allows simultaneous clamping of positive transients on either cathode relative to the shared anode, and negative transients when the anode is biased below cathode potential. This enables true bidirectional TVS behavior without external polarity reversal components.
How does the +3.6 mV/K temperature coefficient affect regulation accuracy?
At a 7.5 V nominal VZ, +3.6 mV/K translates to ~0.048 %/°C drift. Over a −40 °C to +125 °C junction range, total VZ shift is approximately ±0.59 V - fully accounted for in the 7.0 V to 7.9 V min/max specification band at IZ = 5 mA.
Is the marking code '9D' unique to BZB784-C7V5-QX?
Yes - per Table 4, '9D' is the exclusive top-side marking for BZB784-C7V5-QX across all production lots. This code distinguishes it from other variants in the series (e.g., '9C' for C6V8-Q, '9E' for C8V2-Q) and enables rapid visual identification on assembled PCBs.
BZB784-C7V5-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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 180 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-C7V5-QX FAQ
1.How can I place an order for BZB784-C7V5-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB784-C7V5-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-C7V5-QX reliable?
The price and inventory of BZB784-C7V5-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-C7V5-QX is usually 5 days.
3.What payment methods are accepted for BZB784-C7V5-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB784-C7V5-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB784-C7V5-QX?
BZB784-C7V5-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB784-C7V5-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-C7V5-QX?
For technical support, including BZB784-C7V5-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB784-C7V5-QX requirements.
6.How does Aetrix verify that BZB784-C7V5-QX is sourced from the original manufacturer or authorized distributors?
All BZB784-C7V5-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-C7V5-QX meets industry standards.
7.What is the process for return or replacement of BZB784-C7V5-QX?
All BZB784-C7V5-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZB784-C7V5-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-C7V5-QX part is unused and in its original packaging.
Return procedure for BZB784-C7V5-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB784-C7V5-QX Tags
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