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Diodes Incorporated BZX84C5V1W-7
- Part No.:
- BZX84C5V1W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C5V1W-7.pdf
- Description:
- DIODE ZENER 5.1V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,427
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Product details
Overview
BZX84C5V1W-7 from Diodes Incorporated is a 5.1 V, 200 mW surface-mount Zener diode in SOT-323 package, rated for 5 mA test current with 60 Ω dynamic impedance and ±0.3 V zener voltage tolerance (4.8–5.4 V), used for precision voltage regulation and overvoltage protection in low-power analog reference and power supply feedback circuits.
For engineers reviewing the BZX84C5V1W-7 datasheet, BZX84C5V1W-7 pinout, BZX84C5V1W-7 application, or BZX84C5V1W-7 equivalent, key selection criteria include zener voltage accuracy at 5 mA, low dynamic impedance, thermal resistance of 625 K/W, RoHS-compliant lead-free plating, and SOT-323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. It exhibits a negative temperature coefficient of –2.7 mV/°C at 5 mA, enabling predictable drift behavior in temperature-sensitive references.
Its planar die construction ensures consistent parametric performance and reliability in high-volume automated assembly. The device is characterized at 25°C with pulse testing to minimize self-heating effects, and derates linearly to zero power at 150°C ambient per the published derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, 4.8–5.4 V min/max at IZT = 5 mA - defines regulated output voltage window for feedback or clamp use |
| Zener Impedance (ZZT) | 60 Ω max at 1 kHz, 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Power Dissipation (PD) | 200 mW at TA = 25°C - sets maximum continuous DC or pulsed power handling on FR4 board |
| Reverse Current (IR) | 2.0 µA max at VR = 2.0 V - indicates leakage level critical for low-current bias networks |
| Thermal Resistance (RθJA) | 625 K/W - quantifies junction-to-ambient temperature rise per watt, guiding thermal layout on PCB |
| Temp. Coefficient (αVZ) | –2.7 to +1.2 mV/°C at 5 mA - enables compensation design in multi-device reference strings |
Pinout & Package
Package: SOT-323 - ultra-small plastic surface-mount case (2.2 mm × 1.35 mm × 0.9 mm), moisture sensitivity level 1, UL 94V-0 rated, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower-potential node when used as shunt regulator |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to input voltage source and load; maintains ~5.1 V relative to anode |
| Case / Heat Sink (Pin 3) | Non-electrical mechanical tie | Internally connected to cathode in standard SOT-323 Zener configuration per Diodes Inc. schematic |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight parameter distribution and long-term stability in voltage regulation applications |
| SOT-323 ultra-small footprint | Enables placement in dense PCB layouts where board space is constrained below 3 mm² |
| 200 mW power rating | Supports regulation in low-current signal chains (<10 mA) without external heat sinking |
| Lead-free and RoHS compliant | Fulfills environmental compliance requirements for commercial and industrial end equipment |
| Green molding compound | Halogen-free packaging material meeting IPC-4101D and JEDEC J-STD-020D standards |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing output voltage in isolated DC-DC converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Shunt reference providing precise 5.1 V threshold to error amplifier input. Use Value: Maintains ±1% output regulation over line/load/temperature with minimal component count. |
Use Scenario: Protecting microcontroller GPIO pins from transient overvoltage events on sensor interface lines. IC Role / Device Role / Timing Role: Fast-acting voltage clamp limiting pin voltage to ≤5.4 V during ESD or surge events. Use Value: Limits peak clamped voltage within absolute maximum rating of 6 V for 3.3 V I/O pins. |
| Reference Voltage Source | Current Source Bias |
|
Use Scenario: Generating stable bias for op-amp comparator thresholds in battery-powered smoke detector analog front-end. IC Role / Device Role / Timing Role: Low-drift 5.1 V reference feeding resistor-divider network for hysteresis setting. Use Value: Delivers <2.5 mV/°C total drift over –40°C to +85°C, meeting UL217 accuracy requirements. |
Use Scenario: Establishing constant current for LED indicator bias in industrial HMI panel with wide input voltage range. IC Role / Device Role / Timing Role: Zener-based current source with series resistor defining LED drive current. Use Value: Provides ±3% current stability across 5–24 V supply variation due to low ZZT and tight VZ tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231BS-7-F | Zener voltage 5.1 V (same nominal), but tighter 4.85–5.35 V tolerance; 100 mW rating; SOT-323 package | Lower power handling limits use in >5 mA continuous clamp or reference roles | Select when tighter VZ tolerance is prioritized over power margin |
| 1SMA5919BT3G | 5.1 V nominal, 1.5 W power rating, DO-214AC package - significantly larger footprint and higher thermal mass | Not suitable for space-constrained SMT designs; requires different pad layout and reflow profile | Select only when >200 mW dissipation is required and board area permits larger package |
Compared with MMBZ5231BS-7-F and 1SMA5919BT3G, BZX84C5V1W-7 uniquely balances 200 mW capability, SOT-323 compactness, and industry-standard 5.1 V regulation in cost-sensitive consumer and industrial applications.
Availability
BZX84C5V1W-7 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and reference voltage source applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for BZX84C5V1W-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.
BZX84C5V1W-7 belongs to the BZX84C series of general-purpose Zener diodes designed for voltage regulation, waveform clipping, and reference applications in consumer, computing, and industrial electronics.
FAQ
What is the maximum continuous reverse current this Zener can handle at 5.1 V?
The BZX84C5V1W-7 is not rated for continuous reverse current at its zener voltage; it is specified for operation at IZT = 5 mA test current. Its absolute maximum DC power dissipation is 200 mW, so sustained current must remain ≤39.2 mA (200 mW ÷ 5.1 V) with appropriate thermal derating above 25°C ambient.
Does this part have a built-in capacitor or ESD protection?
No. The BZX84C5V1W-7 is a basic silicon Zener diode with no integrated capacitance or ESD structure. Its typical junction capacitance is ~50 pF at VR = 0 V (inferred from Fig. 4 trend), and it provides only passive clamping - external TVS or RC filtering is required for robust ESD immunity.
Can this Zener be used in series to achieve higher regulated voltages?
Yes - multiple BZX84C5V1W-7 devices may be stacked anode-to-cathode to sum zener voltages. However, mismatched temperature coefficients (–2.7 to +1.2 mV/°C) cause unequal voltage division under thermal gradient, so parallel balancing resistors or matched lots are recommended for >2-device stacks.
Is the SOT-323 package compatible with standard reflow profiles for lead-free assembly?
Yes. The BZX84C5V1W-7 uses matte tin lead finish and meets J-STD-020D Level 1 moisture sensitivity, allowing exposure to ambient indefinitely. It supports standard Pb-free reflow profiles with peak temperatures up to 260°C and is qualified per MIL-STD-202 Method 208 for solderability.
BZX84C5V1W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±6%
- Power - Max:
- 200 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C5V1W-7 FAQ
1.How can I place an order for BZX84C5V1W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C5V1W-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 BZX84C5V1W-7 reliable?
The price and inventory of BZX84C5V1W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C5V1W-7 is usually 5 days.
3.What payment methods are accepted for BZX84C5V1W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C5V1W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C5V1W-7?
BZX84C5V1W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C5V1W-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 BZX84C5V1W-7?
For technical support, including BZX84C5V1W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C5V1W-7 requirements.
6.How does Aetrix verify that BZX84C5V1W-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C5V1W-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 BZX84C5V1W-7 meets industry standards.
7.What is the process for return or replacement of BZX84C5V1W-7?
All BZX84C5V1W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C5V1W-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 BZX84C5V1W-7 part is unused and in its original packaging.
Return procedure for BZX84C5V1W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C5V1W-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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