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

Nexperia USA Inc. BZX84-B4V7,215

Name: BZX84-B4V7,215
Brand: Nexperia USA Inc.
SKU: BZX84-B4V7,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B4V7,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B4V7,215.pdf

Description:: DIODE ZENER 4.7V 250MW TO236AB

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Product details

Overview

BZX84-B4V7,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and clamping in signal conditioning, power supply feedback, and overvoltage protection circuits. It delivers 4.7 V nominal Zener voltage at 5 mA test current, with 3 Ω typical differential resistance, <3 µA reverse leakage at 3.7 V, and operates across −55 °C to +150 °C ambient.

For engineers reviewing the BZX84-B4V7,215 datasheet, BZX84-B4V7,215 pinout, BZX84-B4V7,215 application, or BZX84-B4V7,215 equivalent, this page provides verified electrical specifications, thermal performance data, SOT23 terminal mapping, real-world use cases in analog sensing and LDO feedback, and validated alternative parts with documented parameter differences.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage under varying load and temperature conditions. Its 4.7 V nominal Zener voltage is specified at I_Z = 5 mA, with a temperature coefficient of −3.5 mV/K to +0.2 mV/K, enabling predictable drift compensation in bias networks.

The device supports pulsed operation up to 40 W non-repetitive peak reverse power (t_p = 100 µs), while sustaining 250 mW continuous power dissipation on FR4 PCB with standard footprint. Its 300 pF capacitance at 0 V and 3 Ω dynamic impedance ensure minimal signal distortion in high-frequency clamp applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.61 V to 4.79 V at I_Z = 5 mA - defines precise regulation window for feedback loops
Differential Resistance (r_dif)	≤500 Ω max at I_Z = 1 mA; 3 Ω typ at I_Z = 5 mA - determines output impedance and load regulation error
Reverse Leakage (I_R)	≤3 µA max at V_R = 3.7 V - ensures minimal quiescent current in standby-sensitive circuits
Forward Voltage (V_F)	≤0.9 V at I_F = 10 mA - enables low-loss anode-side biasing in dual-rail clamp configurations
Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling without heatsinking
Junction Temperature (T_j)	−55 °C to +150 °C - supports operation in industrial and automotive-adjacent environments
Thermal Resistance (R_th(j-a))	500 K/W in free air - informs derating curves for ambient temperature rise above 25 °C

Pinout & Package

Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm body, 0.9 mm height, and standard reflow-compatible footprint per Figure 12.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Connected to lower-potential node in reverse-bias configuration; carries forward current during transient conduction
2	Not Connected (n.c.)	Internal die pad with no electrical connection; must remain unconnected on PCB to avoid parasitic coupling
3	Cathode (K)	Connected to higher-potential node; serves as voltage reference output point in shunt regulator topology

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tighter regulation than ±5 % variants (BZX84-C), reducing need for post-regulation trimming in mid-precision supplies
Low 3 Ω dynamic impedance at 5 mA	Minimizes output voltage shift under load transients, critical for ADC reference stability and op-amp bias networks
Non-repetitive 40 W surge rating	Withstands ESD and lightning-induced surges without degradation when used with series current-limiting resistor
150 °C maximum junction temperature	Supports placement near heat-generating components (e.g., power MOSFETs) without thermal shutdown risk
SOT23 footprint compatibility	Enables drop-in replacement in space-constrained designs using industry-standard pick-and-place and reflow processes

Applications

Power Supply Feedback

Analog Sensor Biasing

Use Scenario: Stabilizing output voltage in adjustable LDO regulators via resistive divider feedback to error amplifier.

IC Role / Device Role / Timing Role: Shunt voltage reference providing accurate 4.7 V setpoint for comparator input.

Use Value: Enables ±1.5 % output regulation accuracy over line/load/temperature with minimal external components.

Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in industrial transmitters.

IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source for ratiometric sensor excitation.

Use Value: Limits sensor output drift to <0.05 %/°C by matching Zener temperature coefficient to bridge TC.

Overvoltage Clamp

Signal Level Translation

Use Scenario: Protecting microcontroller GPIO pins from 5 V rail transients exceeding 5.5 V.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 4.7 V threshold.

Use Value: Limits pin voltage to ≤5.0 V during 100 µs surges up to 40 W, preventing latch-up or oxide damage.

Use Scenario: Converting 0–5 V logic signals to 0–4.7 V range for interfacing with legacy 4.7 V-tolerant peripherals.

IC Role / Device Role / Timing Role: Passive level-shifter using forward-biased anode and reverse-biased cathode paths.

Use Value: Achieves sub-10 ns propagation delay with <0.1 V undershoot due to low 300 pF capacitance and 0.9 V V_F.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5225BS-7-F	4.6 V nominal, ±5 % tolerance, 10 Ω r_dif, 200 mW P_tot	Higher impedance and looser tolerance reduce regulation accuracy in precision feedback loops	Prefer where cost sensitivity outweighs regulation tightness and thermal margin is constrained
Vishay BZX84-C4V7-TP	4.4 V to 5.0 V range (±5 %), 500 Ω r_dif max, same SOT23 package	Wider voltage spread increases design margin requirements for downstream circuitry	Select only when system-level tolerance budgets allow ≥±5 % variation in reference voltage

Compared with BZX84-B4V7,215, MMBZ5225BS-7-F trades regulation precision for broader availability, while BZX84-C4V7-TP sacrifices impedance and tolerance control for cost reduction-neither matches the 3 Ω/±2 % combination required for high-stability analog references.

Availability

BZX84-B4V7,215 is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded power management, and automotive-adjacent control modules requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZX84-B4V7,215 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 expert focused on high-volume, high-reliability discrete and logic devices, with manufacturing rooted in process innovation and automotive-grade quality systems.

The BZX84 series belongs to Nexperia's precision Zener regulator product line, engineered for low-power voltage reference and clamping in space-constrained, thermally demanding applications across industrial, computing, and consumer electronics.

FAQ

What is the maximum continuous reverse current this diode can sustain at 4.7 V?

The BZX84-B4V7,215 is not rated for continuous reverse conduction at its Zener voltage. Its maximum steady-state reverse current is limited by thermal dissipation: at 4.7 V, continuous current must be ≤53 mA to stay within 250 mW P_tot at 25 °C ambient. Derating applies above 25 °C per R_th(j-a) = 500 K/W.

Can this Zener diode replace a 5.1 V part in an existing circuit?

No-direct substitution is not recommended. At 4.7 V, it regulates ~8 % lower than a 5.1 V Zener, altering feedback ratios, clamp thresholds, and bias points. Circuit recalculations for resistor dividers, current limiting, and thermal margins are required before integration.

Does the n.c. pin require PCB routing or grounding?

No. Pin 2 is internally unconnected and must remain electrically floating on the PCB. Routing or grounding it introduces parasitic capacitance and potential noise coupling; the recommended layout isolates it from all traces and copper pours per Nexperia's SOT23 footprint guidelines.

How does temperature affect its Zener voltage stability?

Its temperature coefficient ranges from −3.5 mV/K to +0.2 mV/K at I_Z = 5 mA. Over −40 °C to +85 °C, this causes up to ±19 mV drift from nominal 4.7 V-approximately ±0.4 %. For tighter stability, pair with NTC thermistors or select temperature-compensated variants like BZX84-A4V7.

BZX84-B4V7,215 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):: 4.7 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 80 Ohms

Current - Reverse Leakage @ Vr:: 3 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-B4V7,215 FAQ

1.How can I place an order for BZX84-B4V7,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B4V7,215 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-B4V7,215 reliable?

The price and inventory of BZX84-B4V7,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B4V7,215 is usually 5 days.

3.What payment methods are accepted for BZX84-B4V7,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B4V7,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B4V7,215?

BZX84-B4V7,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B4V7,215 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-B4V7,215?

For technical support, including BZX84-B4V7,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B4V7,215 requirements.

6.How does Aetrix verify that BZX84-B4V7,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-B4V7,215 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-B4V7,215 meets industry standards.

7.What is the process for return or replacement of BZX84-B4V7,215?

All BZX84-B4V7,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B4V7,215, 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-B4V7,215 part is unused and in its original packaging.

Return procedure for BZX84-B4V7,215:

1.Submit a request within 90 days.

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

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