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

Nexperia USA Inc. BZX84-B13,235

Name: BZX84-B13,235
Brand: Nexperia USA Inc.
SKU: BZX84-B13,235
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84-B13,235

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: BZX84-B13,235.pdf

Description:: DIODE ZENER 13V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:9,780

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Product details

Overview

BZX84-B13,235 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 13 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-B13,235 datasheet, BZX84-B13,235 pinout, BZX84-B13,235 application, or BZX84-B13,235 equivalent, key selection criteria include Zener voltage tolerance (±2 %), thermal resistance (330 K/W to solder point), differential resistance (≤170 Ω at I_Z = 5 mA), and reverse current (≤0.1 μA at V_R = 10.4 V).

Technical Context

This device operates in reverse-biased Zener breakdown mode with a specified working voltage of 12.7 V to 13.3 V at 5 mA test current. Its temperature coefficient is +0.1 mV/K at I_Z = 5 mA, indicating minimal drift over temperature in mid-voltage range regulation.

The diode features a non-connected (n.c.) terminal (Pin 2), enabling simplified PCB layout while maintaining mechanical stability. Thermal performance is defined with R_th(j-sp) = 330 K/W to cathode solder point on FR4 PCB - critical for transient surge handling and steady-state thermal design.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	12.7 V to 13.3 V at I_Z = 5 mA - defines stable regulation window under nominal bias
Tolerance	±2 % - tighter than BZX84-C series (±5 %), suitable for moderate-precision references
Differential Resistance (r_diff)	≤170 Ω at I_Z = 5 mA - determines output impedance and load regulation error
Reverse Current (I_R)	≤0.1 μA at V_R = 10.4 V - ensures low leakage in standby or high-impedance sensing nodes
Total Power Dissipation (P_tot)	250 mW at T_amb ≤ 25 °C - sets maximum continuous DC power in standard FR4 mounting
Non-repetitive Peak Reverse Power	40 W for t_p = 100 μs - supports ESD/transient clamping without degradation
Junction Temperature (T_j)	−55 °C to +150 °C - enables operation in industrial ambient environments

Pinout & Package

Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with 1.9 mm × 1.1 mm footprint and 1.2 mm height; optimized for reflow and wave soldering per IPC-7351B.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-bias terminal; connected to lower-potential node in Zener regulation configuration
2	Not Connected (n.c.)	Internally unconnected; no electrical function - improves mechanical rigidity without circuit impact
3	Cathode (K)	Reverse-bias terminal; tied to regulated output or voltage reference node

Key Features

Feature	Design Value
Low-profile SMT packaging	SOT23 footprint enables high-density PCB layouts and automated assembly compatibility
Controlled Zener tolerance	±2 % (B-series) provides tighter regulation than general-purpose Zeners without premium cost
Thermal robustness	R_th(j-sp) = 330 K/W allows reliable operation up to 150 °C junction temperature
Transient surge capability	40 W non-repetitive peak power rating supports IEC 61000-4-2 ESD protection integration
Low leakage performance	0.1 μA max reverse current at 80 % of V_Z minimizes quiescent current in battery-powered systems

Applications

Power Supply Reference

Overvoltage Clamp

Use Scenario: Providing stable 13 V reference for op-amp biasing or ADC reference divider in industrial sensor signal chains.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to maintain fixed voltage across shunt load.

Use Value: ±2 % tolerance and +0.1 mV/K tempco ensure <±1.5 % total error over −40 °C to +85 °C ambient.

Use Scenario: Clamping microcontroller I/O lines against 15 V transients in 12 V automotive body electronics modules.

IC Role / Device Role / Timing Role: Shunt protector diverting surge current when voltage exceeds 13.3 V threshold.

Use Value: 40 W peak power rating handles 100 μs surges without parametric shift or failure.

Current Source Bias

Comparator Threshold Set

Use Scenario: Establishing constant current for LED biasing in portable instrumentation displays using resistor-Zener topology.

IC Role / Device Role / Timing Role: Voltage reference defining emitter-base drop across series transistor for current regulation.

Use Value: 170 Ω differential resistance limits current variation to <±3 % across 10–100 mA load range.

Use Scenario: Setting precise 13 V trip point for battery undervoltage lockout in 14.4 V Li-ion pack management.

IC Role / Device Role / Timing Role: Stable reference input to comparator's inverting input for hysteresis-free threshold detection.

Use Value: Low 0.1 μA leakage prevents false triggering in high-impedance comparator input networks.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5243B	13 V, ±5 % tolerance, 350 mW P_tot, SOT23 package	Higher power but looser tolerance; less stable reference, better surge margin	Select when higher continuous dissipation is needed and ±5 % regulation is acceptable
Vishay BZX84-C13	13 V, ±5 % tolerance, same 250 mW P_tot, identical SOT23 footprint	Same thermal and package specs, but wider voltage spread (12.4–14.1 V)	Choose for cost-sensitive designs where ±5 % tolerance meets system accuracy requirements

Compared with BZX84-B13,235, MMBZ5243B offers 40 % higher power but sacrifices regulation precision, while BZX84-C13 matches footprint and power but trades ±2 % for ±5 % tolerance - making the B-series optimal for mid-accuracy, space-constrained analog references.

Availability

BZX84-B13,235 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical device power rails, and automotive body control module voltage clamping requiring stable component supply and long-term obsolescence management.

Supply support for BZX84-B13,235 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, with manufacturing in Asia and Europe.

The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, designed specifically for cost-effective, space-efficient voltage reference and protection in consumer, industrial, and communication equipment.

FAQ

What is the maximum continuous forward current for BZX84-B13,235?

The absolute maximum forward current is 200 mA per limiting values table. However, forward conduction is not its intended operating mode - it is designed for reverse-biased Zener regulation. Continuous forward bias above 10 mA risks thermal overstress due to low thermal resistance and lack of forward-rated derating curves.

Can BZX84-B13,235 replace a 12 V Zener in an existing design?

No - its nominal Zener voltage is 13 V (12.7–13.3 V range), not 12 V. Substituting it for a 12 V part would raise regulation voltage by ~1 V, potentially exceeding downstream IC absolute maximum ratings. Use BZX84-B12 (%Z7 marking) for true 12 V replacement with identical ±2 % tolerance and SOT23 package.

Is Pin 2 electrically functional or purely mechanical?

Pin 2 is explicitly marked "n.c." (not connected) in the official pinning diagram and data sheet. It has no internal bond wire or semiconductor connection - its sole purpose is mechanical reinforcement of the leadframe during SMT placement and reflow, with zero electrical role in circuit operation.

How does temperature affect regulation accuracy over −40 °C to +125 °C?

At I_Z = 5 mA, the temperature coefficient is +0.1 mV/K. Over 165 °C range, this yields ±16.5 mV drift (±0.13 % of 13 V), well within the ±2 % initial tolerance. Combined drift remains <±2.1 %, preserving regulation integrity in extended-temperature industrial applications.

BZX84-B13,235 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):: 13 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 30 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-B13,235 FAQ

1.How can I place an order for BZX84-B13,235 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84-B13,235 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-B13,235 reliable?

The price and inventory of BZX84-B13,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B13,235 is usually 5 days.

3.What payment methods are accepted for BZX84-B13,235?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B13,235 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84-B13,235?

BZX84-B13,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84-B13,235 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-B13,235?

For technical support, including BZX84-B13,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B13,235 requirements.

6.How does Aetrix verify that BZX84-B13,235 is sourced from the original manufacturer or authorized distributors?

All BZX84-B13,235 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-B13,235 meets industry standards.

7.What is the process for return or replacement of BZX84-B13,235?

All BZX84-B13,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B13,235, 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-B13,235 part is unused and in its original packaging.

Return procedure for BZX84-B13,235:

1.Submit a request within 90 days.

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

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