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Diodes Incorporated BZX84C10-7
- Part No.:
- BZX84C10-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C10-7.pdf
- Description:
- DIODE ZENER 10V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,446
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Product details
Overview
BZX84C10-7 from Diodes Incorporated is a 10 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and reference applications at 5 mA test current, with ±6% tolerance (9.4–10.6 V), 20 Ω dynamic impedance, and low 0.2 µA reverse leakage at 7 V. It serves as a stable shunt voltage reference in power supply feedback loops, overvoltage clamping circuits, and analog sensor biasing networks.
For engineers reviewing the BZX84C10-7 datasheet, BZX84C10-7 pinout, BZX84C10-7 application, or BZX84C10-7 equivalent, key selection criteria include nominal Zener voltage accuracy, thermal resistance (357 °C/W), junction-to-ambient derating behavior, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 5.0 mA and exhibits a temperature coefficient of +4.5 mV/°C near 10 V, enabling predictable drift compensation in temperature-sensitive references. Its planar die construction ensures stable long-term voltage regulation under continuous DC bias.
The device delivers 350 mW power dissipation when leads are held at ambient temperature, but derates linearly to 300 mW on standard FR-4 board per JEDEC JESD51-2 guidelines. Reverse leakage remains ≤0.2 µA at VR = 7.0 V, supporting low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V nominal, 9.4–10.6 V range at IZT = 5 mA - defines regulated output voltage tolerance in shunt regulator designs |
| Power Dissipation (PD) | 350 mW at ambient-temperature terminals - sets maximum continuous power handling without forced cooling |
| Zener Impedance (ZZT) | 20 Ω at IZT = 5 mA - determines AC ripple rejection and regulation stiffness under load variation |
| Reverse Leakage (IR) | ≤0.2 µA at VR = 7.0 V - ensures minimal quiescent current draw in battery-powered voltage reference circuits |
| Thermal Resistance (RθJA) | 357 °C/W - quantifies junction-to-ambient temperature rise per watt, critical for thermal design on standard PCBs |
| Temperature Coefficient | +4.5 mV/°C - enables calculation of voltage drift across operating temperature range (−65°C to +150°C) |
Pinout & Package
Package: SOT23 - surface-mount plastic case with matte tin-plated Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1, weight ≈ 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower potential node in shunt configuration; polarity must match schematic symbol orientation |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; carries reverse current during regulation; marked with cathode band on package |
| NC / Heat Sink (Pin 3) | Non-connected / thermal path | No internal connection; electrically isolated; may be used as thermal relief pad but not for signal routing |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures consistent Zener voltage distribution and long-term stability under thermal cycling and DC stress |
| AEC-Q101 qualified | Validated for automotive-grade reliability including high-temperature operating life and ESD robustness |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - supports green manufacturing requirements |
| SOT23 footprint | Enables high-density PCB layouts and compatibility with industry-standard pick-and-place equipment and reflow profiles |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-derived DC-DC converters via optocoupler feedback loop. IC Role / Device Role: Shunt voltage reference providing precise 10 V threshold to error amplifier input. Use Value: Maintains ±1% output regulation across line/load/temperature with minimal component count and no external bias resistor needed. |
Use Scenario: Protecting microcontroller GPIO pins or ADC inputs from transient surges exceeding 10 V. IC Role / Device Role: Passive clamping element diverting excess energy to ground when input exceeds 10.6 V. Use Value: Limits peak voltage to safe levels without adding propagation delay or active control logic. |
| Sensor Biasing Network | Low-Power Voltage Monitor |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge sensors in portable instrumentation. IC Role / Device Role: Low-current Zener reference supplying 10 V bias with <0.2 µA leakage at 7 V. Use Value: Enables accurate ratiometric measurements while drawing negligible current from coin-cell or energy-harvesting sources. |
Use Scenario: Detecting brown-out conditions in battery-powered devices by comparing supply rail against 10 V reference using comparator. IC Role / Device Role: Fixed threshold generator for undervoltage lockout (UVLO) circuitry. Use Value: Triggers system reset at predictable 9.4 V minimum, independent of supply ripple or load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240B-7-F | 10 V nominal, 350 mW, SOT23, but higher ZZT = 17 Ω and tighter ±5% tolerance (9.5–10.5 V) | Lower impedance improves ripple rejection; tighter tolerance reduces calibration overhead in precision references | Select when higher regulation accuracy and lower AC impedance are prioritized over cost or legacy design compatibility |
| BZX84-C10LT1G | 10 V nominal, 350 mW, SOT23, same Zener range but different marking code (LT1G vs -7-F) and RoHS compliance documentation | Identical electrical specs; differs only in packaging labeling and traceability format per ON Semiconductor's documentation | Choose for multi-source procurement where second-source validation is required without circuit redesign |
Compared with MMBZ5240B-7-F and BZX84-C10LT1G, BZX84C10-7 offers balanced performance for general-purpose regulation-its ±6% tolerance and 20 Ω impedance suit cost-sensitive industrial controls, while its AEC-Q101 qualification supports automotive body electronics where full qualification is mandatory.
Availability
BZX84C10-7 is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power voltage monitor applications requiring stable component supply, consistent Zener voltage tolerance, and automotive-grade reliability.
Supply support for BZX84C10-7 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, specializing in high-reliability, energy-efficient components for industrial, automotive, and consumer markets.
The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and clamping in space-constrained, high-volume SMT applications with emphasis on manufacturability and environmental compliance.
FAQ
What is the maximum continuous Zener current for BZX84C10-7 at 25°C ambient?
The maximum continuous Zener current is calculated from PD / VZ = 350 mW / 10 V = 35 mA. However, the device is characterized at IZT = 5 mA, and operation above 20 mA requires thermal derating per Figure 1. Sustained currents >25 mA risk exceeding junction temperature limits on standard FR-4 boards.
Does BZX84C10-7 support automotive applications?
Yes - it is qualified to AEC-Q101 standards, including high-temperature operating life, ESD testing (HBM ≥2 kV), and mechanical shock/vibration requirements. Its green molding compound and RoHS 3 compliance meet Tier-1 automotive supplier material declarations.
How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?
With +4.5 mV/°C coefficient, voltage drift from 25°C to 125°C is +450 mV (10 V + 4.5%), resulting in ~10.45 V at +125°C. For applications requiring tighter stability, this drift must be compensated in system-level calibration or by selecting a Zener with near-zero TC (e.g., 5.6 V types).
Can BZX84C10-7 replace BZX84C10LT1G in existing designs?
Yes - both are 10 V, 350 mW SOT23 Zeners with identical electrical specifications, pinout, and thermal characteristics. The difference lies only in manufacturer branding (Diodes Inc. vs ON Semiconductor), marking code, and packaging documentation; no layout or schematic changes are needed.
BZX84C10-7 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):
- 10 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
BZX84C10-7 FAQ
1.How can I place an order for BZX84C10-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C10-7 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 BZX84C10-7 reliable?
The price and inventory of BZX84C10-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C10-7 is usually 5 days.
3.What payment methods are accepted for BZX84C10-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C10-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C10-7?
BZX84C10-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C10-7 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 BZX84C10-7?
For technical support, including BZX84C10-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C10-7 requirements.
6.How does Aetrix verify that BZX84C10-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C10-7 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 BZX84C10-7 meets industry standards.
7.What is the process for return or replacement of BZX84C10-7?
All BZX84C10-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C10-7, 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 BZX84C10-7 part is unused and in its original packaging.
Return procedure for BZX84C10-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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