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Diodes Incorporated BZX84B5V1Q-7-F
- Part No.:
- BZX84B5V1Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B5V1Q-7-F.pdf
- Description:
- DIODE ZENER 5.1V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,660
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Product details
Overview
BZX84B5V1Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount precision Zener diode with 5.1 V nominal zener voltage (±2% tolerance), 350 mW power dissipation, and 60 Ω zener impedance at 5 mA test current. It operates across –65 °C to +150 °C and is used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the BZX84B5V1Q-7-F datasheet, BZX84B5V1Q-7-F pinout, BZX84B5V1Q-7-F application, or BZX84B5V1Q-7-F equivalent, key selection criteria include zener voltage accuracy, low dynamic impedance, automotive qualification, thermal resistance (357 °C/W), and SOT23 package compatibility with automated assembly.
Technical Context
This Zener diode functions as a two-terminal voltage reference device, operating in reverse breakdown mode with a specified zener test current of 5.0 mA and knee current of 1.0 mA. Its temperature coefficient is –2.7 mV/°C at 5 mA, enabling stable regulation under moderate thermal variation.
The device exhibits 480 Ω maximum zener impedance at knee current (1 mA), supporting reliable low-current reference behavior. Its 350 mW power rating applies under ambient-temperature terminal conditions, with derating required above 25 °C per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, ±2% tolerance (5.0–5.2 V) ensures tight regulation in feedback loops. |
| Power Dissipation (PD) | 350 mW at ambient-temperature terminals enables use in compact, non-heatsinked PCB layouts. |
| Zener Impedance (ZZT) | 60 Ω at 5 mA test current minimizes output voltage variation under load transients. |
| Reverse Current (IR) | 2.0 µA max at 2.0 V reverse bias ensures low leakage in high-impedance reference nodes. |
| Thermal Resistance (RθJA) | 357 °C/W supports operation up to +150 °C junction temperature with standard FR-4 mounting. |
| Temperature Coefficient | –2.7 mV/°C at 5 mA provides predictable drift compensation in temperature-sensitive references. |
Pinout & Package
Package: SOT23 - three-terminal surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground path | Connected to system ground or lower-potential node when used in shunt regulation. |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 5.1 V reference relative to anode; connects to feedback or sense point. |
| No-Connect (Pin 3) | Internal die attach / mechanical support only | Not electrically connected; serves structural role in SOT23 molding and thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics. |
| ±2% zener voltage tolerance | Reduces need for post-production trimming in precision voltage monitor designs. |
| Lead-free and halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive environmental compliance requirements. |
| SOT23 footprint compatibility | Enables drop-in replacement in existing 3-pin SOT23 layouts without board redesign. |
Applications
| Automotive Battery Monitoring | Industrial Sensor Reference |
|---|---|
Use Scenario: Monitoring 12 V battery voltage in vehicle infotainment head units. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage detection circuitry. Use Value: Tight 5.1 V ±2% reference enables accurate battery state-of-charge estimation within ±0.1 V error margin. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric measurement front-ends. Use Value: Low 60 Ω zener impedance ensures minimal loading-induced error (<0.05%) on high-impedance RTD bridges. |
| USB-C Power Delivery Clamp | Medical Instrument Voltage Supervisor |
Use Scenario: Overvoltage clamping on USB-C VBUS line during fast-charging negotiation. IC Role / Device Role / Timing Role: Transient voltage suppression element in secondary protection stage. Use Value: 350 mW rating and 2.0 µA leakage at 2 V allow safe clamping without false triggering during normal 5 V operation. |
Use Scenario: Reset supervisor reference in portable ECG monitors requiring long-term calibration stability. IC Role / Device Role / Timing Role: Temperature-compensated voltage threshold generator for brown-out detection. Use Value: –2.7 mV/°C tempco enables predictable trip-point shift across –20 °C to +70 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5231B-TP (Micro Commercial) | Same 5.1 V nominal, ±5% tolerance, 500 mW PD, higher ZZT (17 Ω min, no max spec) | Non-automotive grade; lacks AEC-Q101 qualification and tighter tolerance | Select for cost-sensitive industrial designs where ±5% regulation is acceptable and automotive qualification is unnecessary. |
| BZX84-C5V1 (Diodes Inc., non-Q variant) | Same 5.1 V nominal, ±5% tolerance, identical SOT23 package, no AEC-Q101 validation | Standard commercial version; not rated for automotive temperature or reliability stress testing | Choose for consumer electronics or prototyping where full automotive qualification is not mandated. |
Compared with MMSZ5231B-TP and BZX84-C5V1, BZX84B5V1Q-7-F delivers superior voltage accuracy (±2% vs. ±5%), guaranteed automotive reliability, and lower specified zener impedance-critical for high-precision sensing and safety-critical power monitoring.
Availability
BZX84B5V1Q-7-F is available at Aetrix Electronics and suitable for automotive battery management systems, industrial sensor signal conditioning, and medical instrument voltage supervision requiring stable component supply and AEC-Q101 assurance.
Supply support for BZX84B5V1Q-7-F 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 components for automotive, industrial, and computing markets.
The BZX84 series belongs to Diodes' precision Zener diode product line, engineered specifically for stable voltage reference and regulation in space-constrained, thermally demanding environments-including under-hood automotive electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZX84B5V1Q-7-F?
The nominal zener voltage is 5.1 V with ±2% tolerance, meaning breakdown occurs between 5.0 V and 5.2 V at the specified 5 mA test current. The device is not rated for forward conduction beyond 0.9 V at 10 mA, and reverse breakdown is defined only in the specified zener region-not as a fixed threshold.
Can BZX84B5V1Q-7-F be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing variations in breakdown voltage, causing current imbalance when paralleled. Even matched units risk thermal runaway due to positive temperature coefficient above ~5 V. For higher power, use a single higher-rated Zener or a dedicated voltage reference IC.
Is the SOT23 pinout consistent across all BZX84 variants?
Yes-the BZX84B5V1Q-7-F uses standard SOT23 pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC (non-connected). This matches all BZX84x variants from Diodes Incorporated and is confirmed in the top-view schematic and package outline documentation.
Does BZX84B5V1Q-7-F require external current limiting in shunt regulator configurations?
Yes-like all Zener diodes, it must be series-current-limited to prevent exceeding its 350 mW power rating. A minimum series resistor value is determined by (VIN – 5.1 V) / IZ, where IZ is selected between 1 mA (knee) and 5 mA (nominal test point) based on regulation and noise requirements.
BZX84B5V1Q-7-F 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:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84B5V1Q-7-F FAQ
1.How can I place an order for BZX84B5V1Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B5V1Q-7-F 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 BZX84B5V1Q-7-F reliable?
The price and inventory of BZX84B5V1Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B5V1Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B5V1Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B5V1Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B5V1Q-7-F?
BZX84B5V1Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B5V1Q-7-F 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 BZX84B5V1Q-7-F?
For technical support, including BZX84B5V1Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B5V1Q-7-F requirements.
6.How does Aetrix verify that BZX84B5V1Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B5V1Q-7-F 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 BZX84B5V1Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B5V1Q-7-F?
All BZX84B5V1Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B5V1Q-7-F, 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 BZX84B5V1Q-7-F part is unused and in its original packaging.
Return procedure for BZX84B5V1Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B5V1Q-7-F Tags
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