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Diodes Incorporated BZX84C7V5-7
- Part No.:
- BZX84C7V5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C7V5-7.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
BZX84C7V5-7 from Diodes Incorporated is a 7.5V, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog and digital circuits. It delivers a nominal Zener voltage of 7.5V at 5mA test current, with ±0.4V tolerance (7.0–7.9V), 15Ω dynamic impedance at 5mA, and 1.0µA maximum reverse leakage at 5.0V.
For engineers reviewing the BZX84C7V5-7 datasheet, BZX84C7V5-7 pinout, BZX84C7V5-7 application, or BZX84C7V5-7 equivalent, this part is selected for stable reference generation, power rail clamping, and ESD-sensitive signal conditioning where tight voltage tolerance, low thermal resistance (357°C/W), and AEC-Q101 qualification are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOT23 package enables high-density PCB layouts and compatibility with automated reflow assembly.
It exhibits a positive temperature coefficient of +2.5mV/°C near 7.5V, enabling predictable drift compensation in multi-device references. The device is rated for operation from –65°C to +150°C and supports pulsed Zener currents up to 5mA without exceeding thermal limits under standard FR-4 mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal at IZT = 5mA; actual range 7.0–7.9V ensures reliable clamping in 5V–12V systems |
| Power Dissipation | 350mW at TA = 25°C; derates linearly above 25°C per Fig.1 - supports continuous operation in ambient up to 100°C with proper layout |
| Zener Impedance (ZZT) | 15Ω at 5mA; low dynamic resistance minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | 1.0µA max at VR = 5.0V; ensures minimal quiescent current draw in battery-powered voltage monitors |
| Temperature Coefficient | +2.5mV/°C at 7.5V; enables predictable voltage drift for temperature-compensated reference designs |
| Package | SOT23; 3-pin surface-mount outline with 0.915mm lead pitch - compatible with IPC-7351B footprint and standard pick-and-place equipment |
Pinout & Package
Package: SOT23 - molded plastic case, UL 94V-0 rated, matte tin-plated alloy 42 leadframe, polarity indicated by cathode band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Forward conduction terminal | Connected to lower-potential node during normal operation; used for biasing or sensing in shunt regulator configurations |
| 2 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; carries reverse current during clamping - marked with band on package top |
| 3 (Anode) | Common anode connection | Internally tied to Pin 1; provides mechanical stability and thermal path - must be routed to ground or low-impedance return |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability - suitable for under-hood and infotainment power management without additional qualification |
| Green molding compound | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb); meets RoHS 3 and JEDEC M11 standards for environmental compliance |
| Low thermal resistance | 357°C/W junction-to-ambient (with terminals at ambient); enables higher power margin in compact layouts vs. legacy 417°C/W variant |
| Stable Zener impedance | 15Ω at 5mA with ≤80Ω at knee current (1.0mA); ensures repeatable regulation across production lots and temperature |
Applications
| Power Supply Monitoring | Signal Level Clamping |
|---|---|
|
Use Scenario: Detecting undervoltage/overvoltage conditions in 5V or 12V microcontroller supply rails. IC Role / Device Role / Timing Role: Shunt reference element providing threshold voltage to comparator input. Use Value: 7.5V Zener point allows precise detection of 12V rail sag below 11.0V or rise above 13.0V using resistor divider scaling. |
Use Scenario: Protecting ADC inputs from transient overvoltage in industrial sensor interfaces. IC Role / Device Role / Timing Role: Passive clamp limiting signal swing to ±7.5V relative to ground. Use Value: 1.0µA leakage at 5V ensures <10nA error current into high-impedance sensor amplifiers. |
| Reference Voltage Source | ESD Protection Element |
|
Use Scenario: Generating stable 7.5V reference for DACs or op-amp bias networks in portable instrumentation. IC Role / Device Role / Timing Role: Primary voltage reference in low-current, non-critical accuracy applications. Use Value: ±0.4V tolerance and +2.5mV/°C TC allow calibration to ±1% over 0–70°C without trimming. |
Use Scenario: Secondary-level ESD protection on USB data lines or GPIO pins exposed to human contact. IC Role / Device Role / Timing Role: Fast-turn-on shunt limiter absorbing IEC 61000-4-2 ±8kV contact discharge energy. Use Value: 350mW rating and 15Ω ZZT enable clamping to <10V within 1ns - complements TVS diodes in cascade protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5236B-7-F | 6.8V nominal, 225mW rating, 10Ω ZZT, SOT23 package | Lower voltage and power - suited for 5V rail regulation but not direct 7.5V replacement | Select when tighter ZZT and lower VZ are prioritized over voltage match |
| BZX84-C7V5,115 | Identical electrical specs; same Diodes Inc. die, but Nexperia packaging with different marking and moisture sensitivity level (MSL3 vs MSL1) | No functional difference; differs only in tape/reel packaging and traceability documentation | Choose for supply chain diversification when Diodes Inc. allocation is constrained |
Compared with MMBZ5236B-7-F, BZX84C7V5-7 offers higher clamping voltage and 56% more power handling; versus BZX84-C7V5,115, it provides identical regulation performance with stricter MSL1 handling and AEC-Q101 certification for automotive use cases.
Availability
BZX84C7V5-7 is available at Aetrix Electronics and suitable for power supply monitoring, signal clamping, reference voltage sourcing, and ESD protection requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for BZX84C7V5-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to the BZX84C series of precision Zener diodes engineered for high-reliability voltage reference and protection in space-constrained, thermally demanding applications including automotive control units and industrial PLCs.
FAQ
What is the maximum continuous Zener current for BZX84C7V5-7 at 70°C ambient?
At 70°C ambient, the power derating curve (Fig.1) reduces the allowable dissipation to approximately 245mW. Dividing by the nominal 7.5V Zener voltage yields a maximum continuous Zener current of ~32.7mA - assuming adequate PCB copper area for heat spreading per Diodes' recommended pad layout.
Is BZX84C7V5-7 suitable for use in automotive engine control modules?
Yes - it is explicitly qualified to AEC-Q101 Rev. D for high-reliability automotive applications, with operating temperature range extended to –65°C to +150°C and validated robustness against thermal cycling, humidity, and mechanical shock per the standard's stress test requirements.
How does the 15Ω Zener impedance affect regulation accuracy under load variation?
A 15Ω ZZT means that for every 1mA change in Zener current, the output voltage shifts by 15mV. In a typical 10kΩ load scenario drawing 0.75mA, a ±10% load variation causes only ±0.11V output deviation - sufficient for non-precision analog monitoring and digital threshold detection.
Can BZX84C7V5-7 replace a 7.5V through-hole Zener like 1N4734A in an existing design?
Yes, provided the PCB layout is updated for SOT23 footprint and thermal relief is added to the cathode pad. The electrical characteristics match closely (1N4734A: 7.5V ±5%, 1.0W), but BZX84C7V5-7's lower power rating requires verifying that peak dissipation remains ≤350mW under worst-case operating conditions.
BZX84C7V5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±6%
- Power - Max:
- 300 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C7V5-7 FAQ
1.How can I place an order for BZX84C7V5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C7V5-7 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 BZX84C7V5-7 reliable?
The price and inventory of BZX84C7V5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C7V5-7 is usually 5 days.
3.What payment methods are accepted for BZX84C7V5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C7V5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C7V5-7?
BZX84C7V5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C7V5-7 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 BZX84C7V5-7?
For technical support, including BZX84C7V5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C7V5-7 requirements.
6.How does Aetrix verify that BZX84C7V5-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C7V5-7 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 BZX84C7V5-7 meets industry standards.
7.What is the process for return or replacement of BZX84C7V5-7?
All BZX84C7V5-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C7V5-7, 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 BZX84C7V5-7 part is unused and in its original packaging.
Return procedure for BZX84C7V5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C7V5-7 Tags
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