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Nexperia USA Inc. BZX84-C2V7/DG/B4R
- Part No.:
- BZX84-C2V7/DG/B4R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C2V7/DG/B4R.pdf
- Description:
- DIODE ZENER 2.7V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,518
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Product details
Overview
BZX84-C2V7/DG/B4R from Nexperia is a surface-mount Zener diode with nominal breakdown voltage of 2.7 V ±5%, power dissipation of 300 mW, and maximum Zener impedance of 100 Ω at 5 mA. It provides precise voltage regulation in low-power biasing and reference circuits for sensor signal conditioning in industrial temperature transmitters.
For engineers reviewing the BZX84-C2V7/DG/B4R datasheet, BZX84-C2V7/DG/B4R pinout, BZX84-C2V7/DG/B4R application, or BZX84-C2V7/DG/B4R equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at operating current, leakage current at rated voltage, thermal resistance, and SOT-23 package compatibility with automated PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its 2.7 V nominal Zener voltage targets low-voltage reference needs in 3.3 V and 2.5 V system rails, with 5 mA test current defining the specified voltage and impedance parameters.
The device uses planar epitaxial technology for consistent voltage distribution and low noise performance. Its SOT-23 package enables high-density placement while supporting thermal dissipation up to 300 mW at 25 °C ambient, with derating above that temperature per the published thermal resistance curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V ±5% at IZ = 5 mA - defines stable reference point for low-voltage analog circuitry |
| Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - limits continuous current to ~111 mA at 2.7 V in ambient conditions |
| Zener Impedance (ZZT) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under small-signal load changes |
| Reverse Leakage (IR) | ≤5 µA at VR = 1 V - guarantees negligible current draw in standby or pre-breakdown states |
| Thermal Resistance (RthJA) | 400 K/W - determines junction temperature rise: +40 °C rise per 100 mW dissipated in still air |
| Package | SOT-23 - 3-pin surface-mount footprint compatible with standard pick-and-place and reflow processes |
Pinout & Package
SOT-23 package with cathode-marked lead configuration; standardized pin assignment per JEDEC TO-236AB outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during Zener operation; carries reverse current when cathode is biased positive |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to anode during regulation |
| NC / Dummy (Pin 3) | Non-connected internal tie | Internally unconnected; electrically isolated and not used in circuit design |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±5% at 5 mA enables accurate 2.7 V reference without external trimming |
| Low dynamic impedance | ≤100 Ω supports stable regulation under small-signal load transients |
| Low leakage current | ≤5 µA at 1 V minimizes error in high-impedance bias networks |
| SOT-23 footprint | Standardized 3-pin package allows drop-in replacement and automated assembly |
Applications
| Industrial Sensor Biasing | Low-Voltage Reference Supply |
|---|---|
Use Scenario: Providing stable bias current to RTD or thermistor bridges in field-mounted temperature transmitters. IC Role / Device Role / Timing Role: Zener diode acting as precision voltage reference for op-amp excitation circuitry. Use Value: 2.7 V output matches common ADC input ranges and avoids headroom issues in 3.3 V systems. | Use Scenario: Generating fixed reference for comparator hysteresis thresholds in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Passive voltage clamp establishing known trip point independent of supply rail variation. Use Value: Low 5 µA leakage preserves battery life while maintaining threshold accuracy over temperature. |
| Microcontroller Reset Circuit | ESD-Protected Signal Clamping |
Use Scenario: Setting reset threshold voltage for 3.3 V microcontrollers with internal brown-out detection. IC Role / Device Role / Timing Role: Zener-based voltage divider feeding reset supervisor IC input. Use Value: Tight ±5% tolerance ensures deterministic reset activation at 2.56–2.84 V window. | Use Scenario: Protecting analog front-end inputs from transient overvoltage in automotive cabin sensors. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp limiting signal line excursion to 2.7 V + Vf. Use Value: 100 Ω Zener impedance limits clamping overshoot during fast ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C2V7,115 (Nexperia) | Same electrical specs; differs only in packaging tape/reel coding (115 vs B4R) | No functional difference; identical use in PCB assembly and circuit behavior | Select based on reel size and logistics requirements, not performance |
| MMSZ4675T1G (ON Semiconductor) | 2.7 V ±5%, 500 mW rating, higher power handling but larger SOD-123 footprint | Requires PCB layout change; suitable where higher surge margin is needed | Choose only if thermal margin >300 mW is required; otherwise SOT-23 preferred for density |
Compared with BZX84-C2V7/DG/B4R, the /115 variant offers identical regulation performance with alternate packaging logistics, while MMSZ4675T1G trades compactness for higher power capability-making it relevant only when sustained >300 mW dissipation is expected.
Availability
BZX84-C2V7/DG/B4R is available at Aetrix Electronics and suitable for industrial sensor biasing, low-voltage reference supply, and microcontroller reset circuit design requiring stable component supply and consistent parametric performance across production batches.
Supply support for BZX84-C2V7/DG/B4R 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, headquartered in Nijmegen, Netherlands.
This part belongs to the BZX84 series of general-purpose Zener diodes designed specifically for voltage regulation and reference applications in space-constrained, cost-sensitive consumer and industrial electronics.
FAQ
What is the maximum reverse current this Zener diode can handle continuously?
The BZX84-C2V7/DG/B4R is rated for 300 mW total power dissipation at 25 °C ambient. At its 2.7 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 111 mA. Derating applies above 25 °C per the 400 K/W thermal resistance specification.
Does this device have a specified Zener voltage temperature coefficient?
Yes-the BZX84-C2V7/DG/B4R has a typical temperature coefficient of –1.75 mV/K near 25 °C. This negative coefficient means its Zener voltage decreases by about 1.75 mV per degree Celsius rise in junction temperature, a key factor in precision reference designs over wide temperature ranges.
Can this Zener diode be used in place of a TVS for ESD protection?
No-it is not rated or characterized for ESD pulse handling. While it clamps above 2.7 V, its 300 mW rating and lack of defined peak pulse power make it unsuitable for IEC 61000-4-2 ESD protection. Dedicated low-capacitance TVS diodes like PESD5V0S1BA should be used instead.
Is the third pin in the SOT-23 package electrically connected?
No-the third pin (Pin 3) in the SOT-23 package of BZX84-C2V7/DG/B4R is internally unconnected and serves only as a mechanical tie bar. It must remain floating in PCB layout and carries no electrical function in the Zener operation.
BZX84-C2V7/DG/B4R 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:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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-C2V7/DG/B4R FAQ
1.How can I place an order for BZX84-C2V7/DG/B4R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C2V7/DG/B4R 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-C2V7/DG/B4R reliable?
The price and inventory of BZX84-C2V7/DG/B4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C2V7/DG/B4R is usually 5 days.
3.What payment methods are accepted for BZX84-C2V7/DG/B4R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C2V7/DG/B4R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C2V7/DG/B4R?
BZX84-C2V7/DG/B4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C2V7/DG/B4R 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-C2V7/DG/B4R?
For technical support, including BZX84-C2V7/DG/B4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C2V7/DG/B4R requirements.
6.How does Aetrix verify that BZX84-C2V7/DG/B4R is sourced from the original manufacturer or authorized distributors?
All BZX84-C2V7/DG/B4R 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-C2V7/DG/B4R meets industry standards.
7.What is the process for return or replacement of BZX84-C2V7/DG/B4R?
All BZX84-C2V7/DG/B4R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C2V7/DG/B4R, 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-C2V7/DG/B4R part is unused and in its original packaging.
Return procedure for BZX84-C2V7/DG/B4R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C2V7/DG/B4R Tags
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