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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX84-B5V1,215

Name: BZX84-B5V1,215
Brand: Nexperia USA Inc.
SKU: BZX84-B5V1,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B5V1,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BZX84-B5V1,215.pdf

Description:: DIODE ZENER 5.1V 250MW TO236AB

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Product details

Overview

BZX84-B5V1,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 5.1 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog supply rails and signal conditioning circuits.

For engineers reviewing the BZX84-B5V1,215 datasheet, BZX84-B5V1,215 pinout, BZX84-B5V1,215 application, or BZX84-B5V1,215 equivalent, key selection criteria include Zener voltage tolerance (±2 %), differential resistance (≤480 Ω at 5 mA), temperature coefficient (+1.2 mV/K), reverse current (≤2 μA at 1 V), and thermal resistance (330 K/W junction-to-solder point).

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its 5.1 V nominal Zener voltage is specified at I_Z = 5 mA with ±2 % tolerance, and exhibits a positive temperature coefficient of +1.2 mV/K - enabling predictable drift compensation in temperature-sensitive references.

The device features low differential resistance (480 Ω max at 5 mA) and tight reverse leakage (≤2 μA at V_R = 1 V), supporting accurate regulation in low-current bias networks and feedback paths. Its SOT23 footprint enables high-density placement on FR4 PCBs with standard reflow profiles.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	5.00 V to 5.20 V at I_Z = 5 mA - defines regulated output voltage range under nominal test current
Tolerance	±2 % - ensures voltage accuracy within 102 mV of nominal 5.1 V for precision referencing
Differential Resistance r_dif	≤480 Ω at I_Z = 5 mA - determines regulation stiffness and load-induced voltage variation
Reverse Current I_R	≤2 μA at V_R = 1 V - limits standby power loss in clamping or reference configurations
Temperature Coefficient S_Z	+1.2 mV/K at I_Z = 5 mA - quantifies voltage drift per degree Celsius for thermal design margining
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout
Non-repetitive Peak Power	40 W at t_p = 100 μs - supports transient surge suppression without failure

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and tin-plated copper terminations compatible with standard reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internal die bond wire stub; electrically isolated and must remain unconnected in PCB layout
3	Cathode (K)	Reverse-biased terminal; connects to higher-potential node and carries Zener current during regulation

Key Features

Feature	Design Value
Low-power Zener regulation	250 mW rating enables use in battery-powered and space-constrained analog subsystems
±2 % voltage tolerance	Meets E24 series precision requirements for cost-sensitive voltage reference applications
Three-terminal SOT23 package	Standardized footprint allows drop-in replacement and automated assembly compatibility
Positive temperature coefficient	+1.2 mV/K enables predictable thermal tracking when paired with negative-coefficient components
Low reverse leakage	≤2 μA at 1 V reverse bias minimizes quiescent current in always-on protection circuits

Applications

Power Supply Reference

Overvoltage Clamp

Use Scenario: Providing stable 5.1 V reference for ADC voltage dividers or op-amp bias networks in sensor signal chains.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node potential independent of supply ripple.

Use Value: Delivers 5.1 V ±2 % accuracy with <480 Ω dynamic impedance, ensuring <1 LSB error in 12-bit ADC systems.

Use Scenario: Protecting microcontroller GPIO pins from ESD or transient overvoltage events exceeding 5.5 V.

IC Role / Device Role / Timing Role: Clamping element shunting excess energy to ground when reverse voltage exceeds 5.2 V threshold.

Use Value: Limits pin voltage to ≤5.2 V with 40 W surge capability, preventing latch-up or oxide damage in 3.3 V I/O domains.

Current Source Bias

Linear Regulator Feedback

Use Scenario: Setting bias current for low-noise JFET amplifiers via constant-voltage drop across series resistor.

IC Role / Device Role / Timing Role: Stable voltage source establishing fixed voltage across external resistor to generate precise bias current.

Use Value: Maintains 5.1 V ±2 % across resistor with <2 μA leakage, enabling sub-1 % current accuracy in amplifier biasing.

Use Scenario: Acting as voltage reference in adjustable linear regulator feedback divider (e.g., LM317-based supplies).

IC Role / Device Role / Timing Role: Precision reference node defining output voltage setpoint through resistor ratio calculation.

Use Value: Provides 5.1 V reference with +1.2 mV/K TC, allowing predictable output drift compensation in 5–12 V programmable supplies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5222BS	Same 5.1 V nominal, ±5 % tolerance, 225 mW P_tot, 300 Ω r_dif	Looser tolerance and lower power rating reduce accuracy in precision references but suit general-purpose clamping	Select when ±5 % voltage tolerance is acceptable and board space permits identical SOT23 footprint
Vishay BZX84-C5V1	Same 5.1 V nominal, ±5 % tolerance, 250 mW P_tot, 480 Ω r_dif, identical pinout	Higher leakage (≤5 μA at 1 V) and wider tolerance limit use in low-current, high-accuracy circuits	Choose for cost-sensitive designs where ±5 % regulation is sufficient and thermal performance matches

Compared with BZX84-B5V1,215, MMBZ5222BS offers tighter differential resistance but looser tolerance and lower power, while BZX84-C5V1 matches power and package but sacrifices voltage accuracy and leakage performance - making the BZX84-B5V1,215 optimal for mid-precision, low-leakage 5.1 V reference needs.

Availability

BZX84-B5V1,215 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and linear regulator feedback applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for BZX84-B5V1,215 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability and efficiency.

The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for low-power voltage regulation and clamping in consumer, industrial, and communication equipment where compact size and parametric consistency are critical.

FAQ

What is the maximum continuous forward current for BZX84-B5V1,215?

The BZX84-B5V1,215 is not designed for continuous forward conduction. Its absolute maximum forward current is 200 mA, but operation in forward bias is limited to brief pulses (e.g., ESD testing). In normal Zener regulation, it operates in reverse breakdown with typical Zener current ranging from 1 mA to 20 mA.

Can BZX84-B5V1,215 be used in automotive applications?

No. The BZX84-B5V1,215 is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 7, January 2023). It lacks AEC-Q101 qualification, extended temperature validation, and automotive-grade traceability. For automotive use, Nexperia offers separate -Q qualified variants such as BZX84-Q series.

How does the +1.2 mV/K temperature coefficient affect circuit performance?

The +1.2 mV/K coefficient means the Zener voltage increases by approximately 1.2 mV per degree Celsius rise in junction temperature. At 5.1 V nominal, this equates to ~0.024 %/°C drift - relevant for applications operating across –40 °C to +125 °C ambient, where total drift may reach ±200 mV without compensation.

Is the NC pin (pin 2) required to be grounded or left floating?

Pin 2 is internally not connected and must remain unconnected on the PCB. No routing, solder mask opening, or thermal pad should be assigned to it. Connecting it risks mechanical stress on internal bond wires or unintended parasitic coupling, potentially degrading Zener voltage stability or surge performance.

BZX84-B5V1,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZX84

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 5.1 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 2 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:: TO-236AB

BZX84-B5V1,215 FAQ

1.How can I place an order for BZX84-B5V1,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B5V1,215 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-B5V1,215 reliable?

The price and inventory of BZX84-B5V1,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B5V1,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B5V1,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B5V1,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B5V1,215?

BZX84-B5V1,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B5V1,215 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-B5V1,215?

For technical support, including BZX84-B5V1,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B5V1,215 requirements.

6.How does Aetrix verify that BZX84-B5V1,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B5V1,215 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-B5V1,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B5V1,215?

All BZX84-B5V1,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B5V1,215, 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-B5V1,215 part is unused and in its original packaging.

Return procedure for BZX84-B5V1,215:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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