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

Nexperia USA Inc. BZX84-A11,215

Name: BZX84-A11,215
Brand: Nexperia USA Inc.
SKU: BZX84-A11,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-A11,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-A11,215.pdf

Description:: DIODE ZENER 11V 250MW TO236AB

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Product details

Overview

BZX84-A11,215 from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision low-power voltage reference and clamping in space-constrained PCBs. It delivers a nominal 11 V breakdown voltage at 5 mA, with 150 Ω typical differential resistance, 0.1 μA reverse current at 8.8 V, and operates across –55 °C to +150 °C ambient.

For engineers reviewing the BZX84-A11,215 datasheet, BZX84-A11,215 pinout, BZX84-A11,215 application, or BZX84-A11,215 equivalent, this device serves as a stable shunt reference in power supply feedback loops, overvoltage protection circuits, and analog signal conditioning where tight voltage tolerance and low thermal drift are required.

Technical Context

This Zener diode operates in reverse-biased breakdown mode, maintaining a stable 10.89–11.11 V regulation window at I_Z = 5 mA. Its temperature coefficient of +5.4 to +9.0 mV/K (typical) enables predictable drift compensation in mid-voltage references.

The device features non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), total DC power dissipation limited to 250 mW at T_amb ≤ 25 °C, and junction-to-ambient thermal resistance of 500 K/W on standard FR4 PCB - defining its safe operating area under transient and steady-state conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	10.89 V to 11.11 V at I_Z = 5 mA - defines precise regulation window for feedback or clamping
Differential Resistance r_dif	150 Ω max - determines output impedance and load regulation sensitivity
Reverse Current I_R	0.1 μA max at V_R = 8.8 V - ensures minimal leakage in standby or high-impedance bias networks
Total Power Dissipation P_tot	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB
Non-repetitive Peak Power	40 W for 100 μs - supports transient surge suppression without failure
Junction Temperature Range	–55 °C to +150 °C - enables operation in industrial and extended-temperature environments
Package	SOT23 (TO-236AB) - surface-mount footprint compatible with automated assembly and high-density layouts

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; compact 2.9 mm × 1.3 mm footprint, 1.1 mm height, and gull-wing terminations optimized for reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in shunt configuration
2	Not Connected (n.c.)	Internally unconnected; must remain floating - no PCB trace or component tie
3	Cathode (K)	Reverse-biased terminal; connects to regulated voltage node and current-limiting resistor

Key Features

Feature	Design Value
±1 % voltage tolerance	Enables direct replacement in precision feedback paths without recalibration
250 mW DC power rating	Supports stable regulation in low-current (<20 mA) reference applications without heatsinking
40 W non-repetitive surge capability	Withstands ESD and line transients per IEC 61000-4-2 Level 4 when properly current-limited
150 °C max junction temperature	Permits use in thermally demanding locations near power components or in sealed enclosures
SOT23 package compatibility	Matches industry-standard pick-and-place tooling and reflow profiles (J-STD-020)

Applications

Power Supply Feedback Reference

Overvoltage Clamp Protection

Use Scenario: Stabilizing output voltage in adjustable linear regulators (e.g., LM317) or switching converter error amplifiers.

IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 11 V setpoint to error amplifier input.

Use Value: ±1 % tolerance eliminates need for external trimming; 150 Ω r_dif ensures <0.5 % load regulation error at 5 mA.

Use Scenario: Limiting voltage spikes on 12 V rail inputs exposed to automotive load-dump or inductive kickback.

IC Role / Device Role / Timing Role: Passive clamping element diverting excess energy to ground during transients.

Use Value: 40 W peak power rating absorbs 100 μs surges up to 400 V without degradation when series impedance ≥36 Ω.

Signal-Level Voltage Translation

Analog Sensor Biasing

Use Scenario: Shifting logic-level signals between 3.3 V and 5 V domains using resistor-divider + Zener clamp topology.

IC Role / Device Role / Timing Role: Clamping diode establishing upper rail limit for bidirectional level-shifter circuit.

Use Value: Low 0.1 μA leakage at 8.8 V prevents loading of high-impedance divider nodes; fast response maintains signal integrity.

Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge sensors in measurement front-ends.

IC Role / Device Role / Timing Role: Precision voltage source delivering constant 11 V bias independent of supply variation.

Use Value: +5.4 to +9.0 mV/K tempco allows predictable drift compensation; 250 mW rating supports continuous 1 mA bias current.

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 MMBZ5240BS-7-F	10 V nominal, ±5 % tolerance, 225 mW P_tot, SOT23 package	Looser tolerance increases feedback loop error; higher r_dif (~250 Ω) degrades regulation accuracy	Select when cost sensitivity outweighs precision requirements and 10 V suffices
Vishay BZX84-C11-TP	11 V nominal, ±5 % tolerance, 300 mW P_tot, same SOT23 footprint	Wider voltage spread (10.4–11.6 V) requires design margin; higher power enables higher bias current	Choose for higher surge robustness where ±5 % regulation window is acceptable

Compared with BZX84-A11,215, the MMBZ5240BS-7-F trades precision for cost and the BZX84-C11-TP trades tolerance for higher surge resilience - making the A-grade part optimal for designs requiring stable 11 V reference within ±1 % across temperature and life.

Availability

BZX84-A11,215 is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and analog sensor biasing requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for BZX84-A11,215 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 leadership in automotive-qualified and industrial-grade components.

The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power voltage reference and clamping in consumer, industrial, and computing applications where SMT scalability and parametric consistency are critical.

FAQ

What is the maximum continuous forward current for BZX84-A11,215?

The BZX84-A11,215 is not rated for continuous forward conduction; its absolute maximum forward current is 200 mA only for short pulses. In normal Zener operation, it functions in reverse breakdown, and forward bias should be avoided except during transient events like ESD - where VF remains ≤0.9 V at 10 mA.

Can BZX84-A11,215 replace BZX84-B11 or BZX84-C11 in existing designs?

Yes, but with trade-offs: BZX84-A11,215 offers tighter ±1 % tolerance versus ±2 % (B-series) or ±5 % (C-series), improving regulation accuracy. However, its lower power rating (250 mW vs. 300 mW for C-series) may require verifying thermal margin if bias current exceeds 22.7 mA at 25 °C ambient.

How does the temperature coefficient affect regulation stability across –40 °C to +85 °C?

At 11 V, the BZX84-A11,215 exhibits a positive temperature coefficient of +5.4 to +9.0 mV/K. Over –40 °C to +85 °C (ΔT = 125 K), this produces a worst-case drift of +1.125 V - meaning regulation shifts from ~10.5 V to ~11.6 V. Designers must account for this in closed-loop systems requiring sub-1 % total error.

Is BZX84-A11,215 suitable for automotive applications?

No - this variant is not automotive-qualified. The datasheet explicitly states non-automotive qualification (Rev. 7, Section 13). For automotive use, Nexperia offers separate –Q qualified variants (e.g., BZX84-A11-Q), which undergo AEC-Q101 stress testing and include enhanced process controls and traceability.

BZX84-A11,215 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):: 11 V

Tolerance:: ±1%

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BZX84-A11,215 FAQ

1.How can I place an order for BZX84-A11,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-A11,215 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-A11,215 reliable?

The price and inventory of BZX84-A11,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A11,215 is usually 5 days.

3.What payment methods are accepted for BZX84-A11,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A11,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-A11,215?

BZX84-A11,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-A11,215 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-A11,215?

For technical support, including BZX84-A11,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A11,215 requirements.

6.How does Aetrix verify that BZX84-A11,215 is sourced from the original manufacturer or authorized distributors?

All BZX84-A11,215 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-A11,215 meets industry standards.

7.What is the process for return or replacement of BZX84-A11,215?

All BZX84-A11,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A11,215, 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-A11,215 part is unused and in its original packaging.

Return procedure for BZX84-A11,215:

1.Submit a request within 90 days.

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

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