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Nexperia USA Inc. BZX84-C11/DG/B3,23
- Part No.:
- BZX84-C11/DG/B3,23
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C11/DG/B3,23.pdf
- Description:
- DIODE ZENER 11V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,922
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Product details
Overview
BZX84-C11/DG/B3,23 from Nexperia is a 11 V, 250 mW surface-mount Zener diode in SOT-23 package with ±5% tolerance, 100 nA maximum leakage at 8.3 V, and 15 Ω dynamic impedance, used for voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84-C11/DG/B3,23 datasheet, BZX84-C11/DG/B3,23 pinout, BZX84-C11/DG/B3,23 application, or BZX84-C11/DG/B3,23 equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, thermal resistance, and SOT-23 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across its terminals under varying load and supply conditions. Its 11 V nominal Zener voltage is specified at test current of 5 mA, with dynamic impedance measured at 15 Ω to quantify voltage variation per mA change in current.
The device uses planar epitaxial process for consistent breakdown characteristics and low leakage. Thermal resistance from junction-to-ambient is 500 K/W in free air, limiting continuous power handling to 250 mW at 25 °C ambient without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% at IZ = 5 mA - defines regulated output voltage tolerance band in feedback or clamp circuits |
| Power Dissipation (Ptot) | 250 mW - maximum continuous power before thermal runaway in SOT-23 package at 25 °C ambient |
| Dynamic Impedance (ZZ) | 15 Ω - quantifies voltage stability: ΔVZ ≈ 15 mV per 1 mA current change near operating point |
| Reverse Leakage (IR) | ≤100 nA at 8.3 V - ensures minimal parasitic current draw in high-impedance bias networks |
| Junction-to-Ambient RthJA | 500 K/W - determines temperature rise: +125 K per 250 mW in still air, requiring derating above 25 °C |
| Package | SOT-23 - 3-pin surface-mount outline compatible with standard pick-and-place and reflow profiles |
Pinout & Package
SOT-23 plastic surface-mount package with gull-wing leads; cathode marked by band on top surface. Standard pin assignment: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC) - confirmed per Nexperia SOT-23 mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower potential node; reverse-biased during regulation to enable Zener conduction |
| Pin 2 | Cathode | Connected to higher potential node; voltage referenced to this terminal in clamp or shunt regulator |
| Pin 3 | NC | No internal connection; electrically isolated; must remain unconnected in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables precise voltage clamping without post-production trimming in cost-sensitive consumer designs |
| Low 100 nA leakage at 8.3 V | Maintains signal integrity in high-impedance sensor biasing and reference divider networks |
| 15 Ω dynamic impedance | Supports stable regulation under ±2 mA load variation in 3.3 V/5 V rail monitoring circuits |
| SOT-23 footprint | Reduces PCB area by >60% vs. DO-35, enabling dense layout in space-constrained IoT edge nodes |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamps transient surges on USB VBUS line to prevent damage to downstream USB controllers. IC Role / Device Role / Timing Role: Shunt regulator providing fast-response voltage clamp at 11 V threshold. Use Value: Limits peak voltage to safe level while drawing <1 mA fault current, avoiding fuse blowout or LDO shutdown. | Use Scenario: Generates clean reset pulse when main supply drops below 11 V during brown-out events. IC Role / Device Role / Timing Role: Precision voltage reference triggering external reset IC or MCU internal POR circuit. Use Value: Ensures deterministic reset assertion with ±0.55 V voltage window, eliminating false resets from ripple. |
| Industrial Sensor Signal Conditioning | Low-Power Battery Monitor |
Use Scenario: Stabilizes excitation voltage for resistive bridge sensors in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ratiometric measurement circuits. Use Value: Maintains <0.1% full-scale error over -40 to +85 °C due to tight Zener tolerance and low tempco. | Use Scenario: Monitors lithium coin-cell voltage to trigger low-battery warning at 11 V equivalent (scaled via resistor divider). IC Role / Device Role / Timing Role: Low-current voltage threshold detector in ultra-low-power wake-up path. Use Value: Draws only 100 nA standby current, extending battery life beyond 5 years in always-on wearables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 10 V nominal, ±5%, 350 mW, SOT-23 - higher power rating but 1 V lower Zener voltage | Requires resistor network adjustment to match 11 V regulation point; better suited for higher-current clamp loads | Select when >250 mW dissipation or tighter thermal margin is required |
| BZX84-C10,215 | 10 V nominal, ±5%, 250 mW, SOT-23 - identical package and power, 1 V lower Zener voltage | Direct footprint replacement but shifts regulation threshold; not drop-in for 11 V design | Choose only if system-level recalibration of reference or clamp level is acceptable |
Compared with BZX84-C11/DG/B3,23, MMBZ5240BS-7-F offers higher power headroom at lower voltage, while BZX84-C10,215 maintains identical thermal and layout constraints but requires circuit-level voltage scaling.
Availability
BZX84-C11/DG/B3,23 is available at Aetrix Electronics and suitable for USB protection, microcontroller reset, industrial sensor conditioning, and low-power battery monitoring requiring stable component supply and long-term obsolescence management.
Supply support for BZX84-C11/DG/B3,23 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 high-volume, high-reliability discrete and logic devices, with manufacturing in Europe and Asia.
This part belongs to the BZX84-C series of general-purpose Zener diodes designed for precision voltage regulation and overvoltage protection in cost-sensitive, space-constrained consumer and industrial electronics.
FAQ
What is the maximum reverse current before breakdown for BZX84-C11/DG/B3,23?
The device exhibits ≤100 nA reverse leakage current at 8.3 V, well below the 5 mA test current where Zener breakdown is defined. Breakdown onset occurs gradually starting near 9.5 V, with full regulation established at 11 V ±5% when biased at 5 mA per datasheet test conditions.
Can BZX84-C11/DG/B3,23 be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficient and mismatched breakdown voltages, causing current hogging and thermal runaway when paralleled. For >250 mW requirements, use a single higher-power Zener or active regulation instead.
Is the SOT-23 package lead-free and RoHS compliant?
Yes - BZX84-C11/DG/B3,23 is manufactured with lead-free terminations and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with exemption 7a for lead in high-melting-temperature type solders.
How does dynamic impedance affect regulation accuracy in variable-load circuits?
With 15 Ω dynamic impedance, a ±2 mA load current change causes ±30 mV output variation. This limits regulation accuracy in circuits where load current swings exceed ±1 mA unless compensated with series resistance or feedback control.
BZX84-C11/DG/B3,23 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C11/DG/B3,23 FAQ
1.How can I place an order for BZX84-C11/DG/B3,23 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C11/DG/B3,23 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-C11/DG/B3,23 reliable?
The price and inventory of BZX84-C11/DG/B3,23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C11/DG/B3,23 is usually 5 days.
3.What payment methods are accepted for BZX84-C11/DG/B3,23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C11/DG/B3,23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C11/DG/B3,23?
BZX84-C11/DG/B3,23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C11/DG/B3,23 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-C11/DG/B3,23?
For technical support, including BZX84-C11/DG/B3,23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C11/DG/B3,23 requirements.
6.How does Aetrix verify that BZX84-C11/DG/B3,23 is sourced from the original manufacturer or authorized distributors?
All BZX84-C11/DG/B3,23 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-C11/DG/B3,23 meets industry standards.
7.What is the process for return or replacement of BZX84-C11/DG/B3,23?
All BZX84-C11/DG/B3,23 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C11/DG/B3,23, 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-C11/DG/B3,23 part is unused and in its original packaging.
Return procedure for BZX84-C11/DG/B3,23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C11/DG/B3,23 Tags
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