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Diodes Incorporated BZX84C9V1W-7
- Part No.:
- BZX84C9V1W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C9V1W-7.pdf
- Description:
- DIODE ZENER 9.1V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,541
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Product details
Overview
BZX84C9V1W-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 9.1 V, 200 mW power dissipation, and SOT-323 package. It regulates voltage in low-power biasing, reference, and overvoltage protection circuits, operating across –65 °C to +125 °C with ±0.5 V zener tolerance at 5 mA test current.
For engineers reviewing the BZX84C9V1W-7 datasheet, BZX84C9V1W-7 pinout, BZX84C9V1W-7 application, or BZX84C9V1W-7 equivalent, key selection criteria include zener voltage accuracy (8.5–9.6 V), dynamic impedance (15 Ω at 5 mA), reverse leakage (0.5 µA at 6 V), and thermal resistance (625 K/W) for PCB-level thermal design.
Technical Context
This Zener diode uses planar die construction for stable breakdown characteristics and low temperature coefficient (+3.8 to +7.0 mV/°C). It operates under reverse-biased conditions with specified zener current (IZT = 5 mA) and knee current (IZK = 1.0 mA), delivering precise voltage regulation in compact DC signal conditioning paths.
Its ultra-small SOT-323 package supports high-density layouts while maintaining compliance with J-STD-020D moisture sensitivity level 1 and UL 94V-0 flammability rating. The matte tin-plated Alloy 42 leadframe ensures solderability and RoHS conformance without intentionally added lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 9.1 V - Stable regulation point at 5 mA test current |
| Zener Voltage Range | 8.5–9.6 V - Tolerance band defining usable regulation window |
| Power Dissipation | 200 mW - Maximum continuous power at 25 °C ambient on FR4 board |
| Zener Impedance | 15 Ω @ 5 mA - Low dynamic resistance for minimal output voltage variation |
| Reverse Leakage | 0.5 µA @ 6 V - Minimal parasitic current below breakdown threshold |
| Temp Coefficient | +3.8 to +7.0 mV/°C - Positive drift rate requiring thermal compensation in precision refs |
| Thermal Resistance | 625 K/W - Junction-to-ambient rise per watt; dictates derating above 25 °C |
Pinout & Package
Package: SOT-323 - ultra-compact 3-terminal surface-mount plastic case, 2.0 × 1.25 × 0.9 mm, moisture sensitivity level 1, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference | Connected to lower potential side in reverse-bias regulation configuration |
| Cathode | Zener breakdown terminal / voltage reference node | Provides stable 9.1 V relative to anode when reverse biased ≥6 V |
| Case / Heat Sink | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable breakdown voltage and long-term stability under thermal cycling |
| Lead-free / RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets global environmental compliance requirements |
| "Green" molding compound | Halogen-free encapsulation material compliant with Diodes Inc.'s environmental policy since 2006 |
| Ultra-small SOT-323 footprint | Enables placement in space-constrained consumer and portable electronics PCBs |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 9.1 V reference for LDO feedback networks or ADC reference buffers in battery-powered sensors. IC Role / Device Role / Timing Role: Voltage reference element establishing precise DC bias point for analog circuitry. Use Value: Maintains <±0.5 V regulation error over temperature and load, enabling 12-bit ADC accuracy without trimming. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 6 V in industrial control interfaces. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground during ESD or inductive kick events. Use Value: Limits voltage to ≤9.6 V with <0.5 µA leakage at 6 V, minimizing standby power impact. |
| Signal Level Translation | Low-Power Bias Network |
Use Scenario: Shifting logic levels between 3.3 V and 9 V domains in mixed-voltage sensor subsystems. IC Role / Device Role / Timing Role: Passive voltage translation node using forward drop and zener clamp thresholds. Use Value: Enables bidirectional level adaptation with <15 Ω dynamic impedance, preserving signal edge integrity. | Use Scenario: Generating stable gate bias for low-current MOSFET switches in always-on IoT node power management. IC Role / Device Role / Timing Role: Precision DC bias source for FET gate drive in ultra-low-quiescent circuits. Use Value: Delivers 9.1 V ±0.5 V with 200 mW headroom, supporting 10 µA–5 mA bias current range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | Zener voltage 10 V (min 9.5 V, max 10.5 V); 350 mW power rating; SOT-323 package | Higher voltage and power support wider margin in clamp designs but less precise for 9.1 V references | Select when higher clamping headroom or elevated power handling is required |
| BZX84-C9V1,115 | Same 9.1 V zener voltage; 250 mW rating; SOT-23 package (larger footprint, different pad layout) | SOT-23 requires PCB redesign; slightly better thermal performance due to larger copper exposure | Select when existing SOT-23 layout exists and thermal derating above 200 mW is needed |
Compared with MMBZ5240BS-7-F and BZX84-C9V1,115, the BZX84C9V1W-7 offers tighter 8.5–9.6 V tolerance at 200 mW in the smallest SOT-323 form factor-ideal for space-constrained 9.1 V reference and clamp roles where leakage (<0.5 µA) and low dynamic impedance (15 Ω) are critical.
Availability
BZX84C9V1W-7 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power bias network applications requiring stable component supply and full traceability.
Supply support for BZX84C9V1W-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The BZX84 series belongs to Diodes Inc.'s standard Zener diode product line, designed specifically for cost-sensitive, space-constrained voltage regulation and protection in portable and embedded electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C9V1W-7?
The BZX84C9V1W-7 exhibits sharp zener breakdown beginning at approximately 8.5 V (minimum specified zener voltage) and fully regulating within 8.5–9.6 V at 5 mA test current. Below 6 V, reverse leakage remains ≤0.5 µA, confirming no significant conduction prior to the zener knee.
Can BZX84C9V1W-7 be used in place of a 9 V battery reference?
Yes-it provides a stable 9.1 V reference with ±0.5 V tolerance at 5 mA, suitable for non-critical analog references. However, its 200 mW limit restricts sustained current to ~22 mA at 9.1 V; for higher current or tighter tolerance, active references or buffered Zeners are recommended.
Is the SOT-323 package compatible with standard reflow profiles?
Yes-the SOT-323 package is rated for moisture sensitivity level 1 per J-STD-020D and supports standard lead-free reflow profiles. Its UL 94V-0 molded plastic body and matte tin plating ensure reliable solder joint formation without pre-baking requirements.
How does temperature affect the zener voltage of BZX84C9V1W-7?
The temperature coefficient is +3.8 to +7.0 mV/°C at 5 mA, indicating positive drift: voltage increases ~5 mV per °C rise. At 85 °C ambient, expect ~0.3 V higher zener voltage than at 25 °C-critical for precision references requiring thermal compensation.
BZX84C9V1W-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):
- 9.1 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
BZX84C9V1W-7 FAQ
1.How can I place an order for BZX84C9V1W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C9V1W-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 BZX84C9V1W-7 reliable?
The price and inventory of BZX84C9V1W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C9V1W-7 is usually 5 days.
3.What payment methods are accepted for BZX84C9V1W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C9V1W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C9V1W-7?
BZX84C9V1W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C9V1W-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 BZX84C9V1W-7?
For technical support, including BZX84C9V1W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C9V1W-7 requirements.
6.How does Aetrix verify that BZX84C9V1W-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C9V1W-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 BZX84C9V1W-7 meets industry standards.
7.What is the process for return or replacement of BZX84C9V1W-7?
All BZX84C9V1W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C9V1W-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 BZX84C9V1W-7 part is unused and in its original packaging.
Return procedure for BZX84C9V1W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C9V1W-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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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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