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Diodes Incorporated BZX84C9V1-7-F
- Part No.:
- BZX84C9V1-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C9V1-7-F.pdf
- Description:
- DIODE ZENER 9.1V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,537
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Product details
Overview
BZX84C9V1-7-F from Diodes Incorporated is a 350mW surface-mount Zener diode with nominal zener voltage 9.1V (±5.5% tolerance), 15Ω dynamic impedance at 5mA test current, and 0.5µA maximum reverse leakage at 6.0V. It operates from −65°C to +150°C and is housed in an SOT23 package. It provides precise voltage regulation in low-power power supply rails and reference circuits.
For engineers reviewing the BZX84C9V1-7-F datasheet, BZX84C9V1-7-F pinout, BZX84C9V1-7-F application, or BZX84C9V1-7-F equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, and AEC-Q101-qualified alternatives for automotive and industrial voltage reference design.
Technical Context
This Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its 9.1V nominal zener voltage is specified at 5mA test current (IZT), with temperature coefficient of +3.8mV/°C - indicating positive drift over temperature.
Thermal resistance junction-to-ambient is 357°C/W under free-air conditions with terminals held at ambient, enabling stable regulation up to 350mW dissipation at 25°C. Power derating begins linearly above 25°C per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1V nominal, 8.5–9.6V range at 5mA - defines regulated output voltage tolerance band |
| Power Dissipation (PD) | 350mW maximum at 25°C - sets upper limit for continuous DC power handling |
| Zener Impedance (ZZT) | 15Ω at 5mA - determines output voltage stability under load current variation |
| Reverse Leakage (IR) | 0.5µA max at VR = 6.0V - ensures minimal quiescent current in standby regulation |
| Temperature Coefficient | +3.8mV/°C - quantifies voltage drift per degree Celsius rise above 25°C |
| Operating Temperature | −65°C to +150°C - supports extended-range industrial and automotive environments |
Pinout & Package
Package: SOT23 - surface-mount plastic case with matte tin-plated alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential side in reverse-bias regulation configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential side; voltage referenced to this node during regulation |
| NC / Dummy (Pin 3) | Non-connected internal tie | Electrically isolated; no circuit function - mechanical support only |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance control and repeatable breakdown characteristics across production lots |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; <900ppm Br+Cl, <1000ppm Sb |
| SOT23 footprint compatibility | Standardized 3-pin layout enables drop-in replacement in existing PCB designs without layout change |
Applications
| Power Supply Voltage Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback node in adjustable DC-DC converter ICs requiring ±1% output accuracy. IC Role / Device Role / Timing Role: Provides fixed reference voltage for error amplifier comparison against output divider ratio. Use Value: 15Ω ZZT ensures <10mV output shift under 150µA load variation, maintaining regulation integrity. |
Use Scenario: Clamping transient surges on 9V rail in automotive body control modules. IC Role / Device Role / Timing Role: Shunts excess energy to ground when line voltage exceeds 9.6V peak. Use Value: 350mW rating sustains 100ms surge events without degradation; 0.5µA IR minimizes standby loss. |
| Low-Power Sensor Biasing | Microcontroller Reset Circuit |
Use Scenario: Generating stable 9.1V bias for precision analog front-end op-amps in industrial sensor nodes. IC Role / Device Role / Timing Role: Supplies clean, temperature-compensated excitation voltage to bridge sensors. Use Value: +3.8mV/°C TC allows predictable calibration offset correction across −40°C to +125°C. |
Use Scenario: Holding microcontroller reset pin low until 9V supply stabilizes post-power-on. IC Role / Device Role / Timing Role: Acts as threshold detector triggering reset release at defined voltage level. Use Value: 8.5–9.6V VZ window ensures reliable release timing across process and temperature corners. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BLT1G | 9.1V nominal, 100Ω ZZT @ 20mA, 300mW PD, SOT23 | Higher impedance reduces regulation precision; lower power rating limits surge handling | Acceptable where cost sensitivity outweighs regulation accuracy requirements |
| BZX84-C9V1,115 | 9.1V nominal, 15Ω ZZT @ 5mA, 350mW PD, SOT23 - identical specs, Nexperia branding | No functional difference; qualified to AEC-Q101 but with different qualification report traceability | Drop-in substitute with identical electrical and thermal behavior; preferred for multi-source procurement |
Compared with BZX84C9V1-7-F, MMBZ5240BLT1G trades regulation accuracy for cost, while BZX84-C9V1,115 offers identical performance with alternate supply-chain traceability - enabling dual-sourcing without design revalidation.
Availability
BZX84C9V1-7-F is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial sensor signal conditioning, and medical portable device voltage references requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84C9V1-7-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This part belongs to the BZX84C series of standard Zener diodes designed for general-purpose voltage regulation and clamping in space-constrained, high-reliability applications - emphasizing manufacturability, thermal stability, and automotive qualification.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C9V1-7-F?
The device exhibits sharp reverse breakdown at its nominal zener voltage of 9.1V, with guaranteed operation between 8.5V and 9.6V at 5mA test current. Below 6.0V, reverse leakage remains ≤0.5µA - confirming no significant conduction prior to the specified knee region.
Can BZX84C9V1-7-F be used in place of a 9V battery replacement circuit?
No - it is not a power source but a voltage reference/clamp. While it regulates at ~9.1V, its 350mW power limit restricts sustained current to ~38mA at full regulation. It cannot deliver the 100+ mA typical of 9V alkaline batteries and lacks energy storage capability.
Is the SOT23 package lead-free and RoHS-compliant?
Yes - BZX84C9V1-7-F uses matte tin finish over alloy 42 leadframe, fully compliant with RoHS 3 (2015/863/EU), with bromine and chlorine each <900ppm and antimony <1000ppm. It carries the "Green" designation per Diodes Incorporated's specification.
How does temperature affect the zener voltage of this diode?
It exhibits a +3.8mV/°C temperature coefficient, meaning VZ increases by approximately 3.8mV per °C rise above 25°C. At +125°C, VZ shifts +380mV - from 9.1V to ~9.48V - a predictable, linear drift used in compensated reference designs.
BZX84C9V1-7-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):
- 9.1 V
- Tolerance:
- ±6%
- Power - Max:
- 350 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 ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C9V1-7-F FAQ
1.How can I place an order for BZX84C9V1-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C9V1-7-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 BZX84C9V1-7-F reliable?
The price and inventory of BZX84C9V1-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C9V1-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C9V1-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C9V1-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C9V1-7-F?
BZX84C9V1-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C9V1-7-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 BZX84C9V1-7-F?
For technical support, including BZX84C9V1-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C9V1-7-F requirements.
6.How does Aetrix verify that BZX84C9V1-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C9V1-7-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 BZX84C9V1-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C9V1-7-F?
All BZX84C9V1-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C9V1-7-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 BZX84C9V1-7-F part is unused and in its original packaging.
Return procedure for BZX84C9V1-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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