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Nexperia USA Inc. BZX84-C9V1/DG/B3:2
- Part No.:
- BZX84-C9V1/DG/B3:2
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C9V1/DG/B3:2.pdf
- Description:
- DIODE ZENER 9.05V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,632
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Product details
Overview
BZX84-C9V1/DG/B3:2 from Nexperia is a 9.1 V, 250 mW silicon planar Zener diode in SOT-23 package with ±5% tolerance, 10 Ω dynamic impedance, and 5 µA maximum leakage current at 7.3 V, used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84-C9V1/DG/B3:2 datasheet, BZX84-C9V1/DG/B3:2 pinout, BZX84-C9V1/DG/B3:2 application, or BZX84-C9V1/DG/B3:2 equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, dynamic impedance, temperature coefficient, and SOT-23 footprint compatibility in space-constrained PCB designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. It features a nominal Zener voltage of 9.1 V at test current of 5 mA, with a temperature coefficient of +6.5 mV/K ensuring predictable drift over industrial temperature range (−65 °C to +150 °C).
The device uses planar epitaxial process for tight parameter control and high reliability. Its 250 mW power rating and low leakage current (<5 µA at 7.3 V) support precision biasing and reference functions in battery-powered and signal-conditioning applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V ±5% at IZ = 5 mA - defines regulated output voltage with bounded error margin |
| Power Dissipation (Ptot) | 250 mW - limits continuous thermal stress in SOT-23 package without heatsink |
| Dynamic Impedance (ZZT) | 10 Ω max at IZ = 5 mA - determines regulation stiffness against load current variation |
| Reverse Leakage (IR) | ≤5 µA at VR = 7.3 V - ensures minimal quiescent current in standby reference circuits |
| Temperature Coefficient (αVZ) | +6.5 mV/K - quantifies voltage drift per degree Celsius rise above 25 °C |
| Package | SOT-23 - surface-mount, 3-pin footprint compatible with automated assembly and compact layouts |
Pinout & Package
SOT-23 plastic surface-mount package with cathode-marked lead identification; standardized 3-terminal configuration for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / reverse-biased reference return | Connected to circuit ground or lower potential node in shunt regulator topology |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 9.1 V reference when reverse-biased above breakdown threshold |
| No Connect (Pin 3) | Internal die attachment pad - not electrically connected | Thermal relief pad only; must remain unconnected to avoid parasitic coupling or short |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables direct use in 9 V rail monitoring without external trimming |
| Low 10 Ω dynamic impedance | Maintains <100 mV output deviation across 1–10 mA load current swing |
| Industrial temperature range (−65 °C to +150 °C) | Supports operation in automotive engine control and industrial sensor modules |
| SOT-23 footprint compatibility | Allows drop-in replacement with other BZX84 series Zeners without layout change |
Applications
| Power Supply Monitoring | ADC Reference Stabilization |
|---|---|
Use Scenario: Monitoring 12 V automotive supply rails for undervoltage detection. IC Role / Device Role / Timing Role: Shunt reference providing precise 9.1 V threshold for comparator input. Use Value: Enables reliable trip point within ±0.46 V tolerance without calibration. | Use Scenario: Providing stable reference voltage for 10-bit SAR ADC in portable medical sensor. IC Role / Device Role / Timing Role: Low-drift Zener reference source replacing higher-cost bandgap ICs. Use Value: Delivers <0.1% full-scale error contribution at 5 mA bias current. |
| LED Current Regulation | Microcontroller Reset Circuit |
Use Scenario: Biasing constant-current LED driver in IoT status indicator. IC Role / Device Role / Timing Role: Voltage clamp defining emitter-base bias point for PNP transistor current mirror. Use Value: Limits LED current variation to ±3% over 3.3–5.5 V input range. | Use Scenario: Generating clean reset pulse during 3.3 V MCU power-up sequencing. IC Role / Device Role / Timing Role: Threshold detector feeding RC-delayed reset signal to microcontroller's nRST pin. Use Value: Ensures valid reset assertion until VCC exceeds 9.1 V × 0.9 = 8.19 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 9.1 V ±5%, 350 mW, 15 Ω ZZT, SOT-23 | Higher power rating allows greater current margin but larger thermal footprint | Prefer when >250 mW dissipation or >10 mA test current required |
| BZX84-C9V1,115 | Identical 9.1 V ±5%, 250 mW, SOT-23, but different reel packaging and traceability | No functional difference; differs only in logistics coding and RoHS compliance marking | Select for legacy BOM continuity where Nexperia's "115" suffix is specified |
Compared with BZX84-C9V1/DG/B3:2, MMBZ5240BS-7-F offers higher power headroom at cost of slightly degraded regulation stiffness, while BZX84-C9V1,115 provides identical electrical performance with alternate logistics coding for procurement alignment.
Availability
BZX84-C9V1/DG/B3:2 is available at Aetrix Electronics and suitable for power supply monitoring, ADC reference stabilization, and microcontroller reset circuit design requiring stable component supply and consistent parametric performance across production batches.
Supply support for BZX84-C9V1/DG/B3:2 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
This part belongs to the BZX84-C series of general-purpose Zener diodes, engineered for precision voltage reference and regulation in space-constrained, low-power analog subsystems.
FAQ
What is the maximum reverse current before breakdown for BZX84-C9V1/DG/B3:2?
The device exhibits ≤5 µA reverse leakage at 7.3 V, well below its 9.1 V nominal Zener voltage. Breakdown begins gradually near 8.6 V and reaches full regulation at 9.1 V ±5% with 5 mA test current. Operation below 8.6 V remains in non-conductive region with negligible current flow.
Can BZX84-C9V1/DG/B3:2 be used in series for higher voltage reference?
Yes - two units in series yield ~18.2 V reference with doubled dynamic impedance (~20 Ω) and cumulative tolerance (±7.1%). However, mismatched temperature coefficients may increase drift; dedicated higher-voltage Zeners or bandgap references are preferred for critical applications.
Is the SOT-23 pinout compatible with standard pick-and-place equipment?
Yes - it conforms to JEDEC MO-215 standard for SOT-23 packages, with 0.95 mm pitch, 1.3 mm body width, and defined anode/cathode orientation. All major placement machines recognize this footprint using standard vision fiducials and vacuum nozzle profiles.
Does BZX84-C9V1/DG/B3:2 meet AEC-Q200 requirements for automotive use?
No - this variant is qualified to general industrial standards (JEDEC JESD22), not AEC-Q200. For automotive applications, Nexperia offers the AEC-Q200-qualified BZX84-A9V1 variant with extended qualification testing and PPAP documentation support.
BZX84-C9V1/DG/B3:2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 9.05 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C9V1/DG/B3:2 FAQ
1.How can I place an order for BZX84-C9V1/DG/B3:2 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C9V1/DG/B3:2 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 BZX84-C9V1/DG/B3:2 reliable?
The price and inventory of BZX84-C9V1/DG/B3:2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C9V1/DG/B3:2 is usually 5 days.
3.What payment methods are accepted for BZX84-C9V1/DG/B3:2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C9V1/DG/B3:2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C9V1/DG/B3:2?
BZX84-C9V1/DG/B3:2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C9V1/DG/B3:2 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 BZX84-C9V1/DG/B3:2?
For technical support, including BZX84-C9V1/DG/B3:2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C9V1/DG/B3:2 requirements.
6.How does Aetrix verify that BZX84-C9V1/DG/B3:2 is sourced from the original manufacturer or authorized distributors?
All BZX84-C9V1/DG/B3:2 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 BZX84-C9V1/DG/B3:2 meets industry standards.
7.What is the process for return or replacement of BZX84-C9V1/DG/B3:2?
All BZX84-C9V1/DG/B3:2 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C9V1/DG/B3:2, 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 BZX84-C9V1/DG/B3:2 part is unused and in its original packaging.
Return procedure for BZX84-C9V1/DG/B3:2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C9V1/DG/B3:2 Tags
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