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

Microchip Technology 1N5342AE3/TR13

Name: 1N5342AE3/TR13
Brand: Microchip Technology
SKU: 1N5342AE3/TR13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5342AE3/TR13

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: T-18, Axial

Datasheet:: 1N5342AE3/TR13.pdf

Description:: DIODE ZENER 6.8V 5W T18

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Product details

Overview

1N5342AE3/TR13 from Microsemi is a 6.8 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It delivers 175 mA maximum Zener current (IZM), exhibits 1.0 Ω dynamic impedance (ZZ) at 175 mA test current, and operates across –65°C to +150°C.

For engineers reviewing the 1N5342AE3/TR13 datasheet, 1N5342AE3/TR13 pinout, 1N5342AE3/TR13 application, or 1N5342AE3/TR13 equivalent, key selection criteria include its ±10% voltage tolerance (A suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR13), and thermal resistance of 25 °C/W junction-to-lead at 3/8″ lead length.

Technical Context

This Zener diode operates in reverse breakdown mode with cathode band marking polarity. Its regulation performance is specified at 25°C lead temperature (TL), with voltage measured 40±10 ms after DC current application. The device maintains stable V_Z across wide current ranges due to low dynamic impedance and minimal ΔV_Z (11.5 V max regulation variation between 10% and 50% I_ZM).

Thermal design relies on junction-to-lead conduction (25 °C/W) rather than ambient convection; derating begins above 25°C TL per Figure 1. It withstands 5.2 A non-recurrent 8.3 ms surge current (I_ZSM) and exhibits <10 μA reverse leakage at 5.2 V (V_R), confirming tight regulation near nominal V_Z.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.8 V ±10% - defines regulated output voltage under nominal bias; high-end tolerance = 7.48 V for I_ZM calculation.
Test Current (I_ZT)	175 mA - standardized operating point where V_Z and Z_Z are guaranteed; used for production testing.
Dynamic Impedance (Z_Z)	1.0 Ω - low AC resistance ensures minimal voltage shift with load current changes in regulation circuits.
Max Regulator Current (I_ZM)	700 mA - maximum continuous DC current at 25°C TL; determines power handling with heatsinking.
Reverse Leakage (I_R)	10 μA @ 5.2 V - confirms sharp knee and low off-state conduction below regulation threshold.
Voltage Regulation (ΔV_Z)	11.5 V - difference between V_Z at 10% and 50% of I_ZM; quantifies line regulation capability.
Surge Current (I_ZSM)	5.2 A - peak half-sine surge rating for transient overvoltage clamping without failure.

Pinout & Package

Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), 0.7 g weight, cathode indicated by colored band. Leads are RoHS-compliant annealed matte-tin plated per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Reference ground node	Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode.
Cathode (banded end)	Regulated output node	Provides stable 6.8 V reference when reverse-biased; must be held positive relative to anode.

Key Features

Feature	Design Value
JEDEC-registered Zener family	Ensures industry-standard mechanical dimensions, marking, and test methodology compliance for interchangeability.
Moisture sensitivity Level 1	No dry pack required before PCB assembly-reduces handling cost and avoids moisture-related popcorning.
Nonsensitive to ESD (MIL-STD-750 Method 1020)	Eliminates need for special ESD handling during manufacturing and field service.
RoHS-compliant (e3 suffix)	Meets EU Directive 2011/65/EU; tin-lead-free plating compatible with lead-free reflow profiles.
Tape-and-reel packaging (TR13)	Enables automated pick-and-place assembly; TR13 denotes EIA-296 standard 13-inch reel format.

Applications

Switch-Mode Power Supply Feedback	Overvoltage Protection Clamp
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Provides precise 6.8 V reference to error amplifier input; sets regulation threshold independent of input line or load variation. Use Value: Enables ±10% output voltage accuracy over temperature and line/load transients using low-cost discrete solution.	Use Scenario: Clamps transient surges on 5 V or 12 V rail caused by inductive switching or ESD events. IC Role / Device Role / Timing Role: Acts as shunt regulator that conducts excess current when rail exceeds 6.8 V + tolerance, diverting energy to ground. Use Value: Limits peak voltage to ≤7.48 V (max V_Z), protecting downstream logic ICs rated for 5.5 V or 13.2 V absolute maximum.
Programmable Reference Voltage Generator	Industrial Sensor Excitation Bias
Use Scenario: Generates stable bias for analog front-end circuits requiring adjustable reference via resistor divider from Zener output. IC Role / Device Role / Timing Role: Serves as primary voltage reference source; divider taps 6.8 V to produce 2.5 V or 4.096 V for ADC reference inputs. Use Value: Delivers <10 μA leakage and 1.0 Ω Z_Z, minimizing divider loading error and improving ADC effective resolution.	Use Scenario: Supplies excitation current to resistive temperature detectors (RTDs) or strain gauges in 4–20 mA transmitter modules. IC Role / Device Role / Timing Role: Maintains constant 6.8 V across sense resistor network, enabling accurate current sourcing independent of supply drift. Use Value: Supports operation from –65°C to +150°C ambient, meeting extended industrial temperature requirements without calibration drift.

Switch-Mode Power Supply Feedback

Overvoltage Protection Clamp

Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier.

IC Role / Device Role / Timing Role: Provides precise 6.8 V reference to error amplifier input; sets regulation threshold independent of input line or load variation.

Use Value: Enables ±10% output voltage accuracy over temperature and line/load transients using low-cost discrete solution.

Use Scenario: Clamps transient surges on 5 V or 12 V rail caused by inductive switching or ESD events.

IC Role / Device Role / Timing Role: Acts as shunt regulator that conducts excess current when rail exceeds 6.8 V + tolerance, diverting energy to ground.

Use Value: Limits peak voltage to ≤7.48 V (max V_Z), protecting downstream logic ICs rated for 5.5 V or 13.2 V absolute maximum.

Programmable Reference Voltage Generator

Industrial Sensor Excitation Bias

Use Scenario: Generates stable bias for analog front-end circuits requiring adjustable reference via resistor divider from Zener output.

IC Role / Device Role / Timing Role: Serves as primary voltage reference source; divider taps 6.8 V to produce 2.5 V or 4.096 V for ADC reference inputs.

Use Value: Delivers <10 μA leakage and 1.0 Ω Z_Z, minimizing divider loading error and improving ADC effective resolution.

Use Scenario: Supplies excitation current to resistive temperature detectors (RTDs) or strain gauges in 4–20 mA transmitter modules.

IC Role / Device Role / Timing Role: Maintains constant 6.8 V across sense resistor network, enabling accurate current sourcing independent of supply drift.

Use Value: Supports operation from –65°C to +150°C ambient, meeting extended industrial temperature requirements without calibration drift.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5342B	Same V_Z (6.8 V) but ±5% tolerance (B suffix); higher I_ZM = 700 mA vs. 700 mA (identical); identical package and thermal specs.	Preferred where tighter voltage tolerance is required for precision references; same PCB layout and thermal design.	Select 1N5342B when ±5% V_Z stability is mandatory; otherwise 1N5342AE3/TR13 offers cost advantage for less critical regulation.
MMBZ5235B-TP	Surface-mount SOD-123 package; 6.8 V ±5%; 200 mW power rating; 100 mA I_ZM; not axial-leaded or 5 W rated.	Suitable only for low-power signal-level referencing; cannot replace 1N5342AE3/TR13 in high-current regulation or surge-clamp roles.	Choose MMBZ5235B-TP only for space-constrained PCBs with <100 mA Zener current needs; not a functional replacement for 5 W applications.

Compared with 1N5342B and MMBZ5235B-TP, the 1N5342AE3/TR13 uniquely balances RoHS compliance, tape-and-reel automation support, and full 5 W power handling in an axial-leaded form factor-making it optimal for industrial power supplies where reliability, manufacturability, and thermal robustness are prioritized over ultra-tight voltage tolerance.

Availability

1N5342AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable reference voltage generators requiring stable component supply across extended temperature ranges and high-reliability manufacturing environments.

Supply support for 1N5342AE3/TR13 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

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.

The 1N53xx series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems-emphasizing thermal robustness, ESD immunity, and JEDEC-standardized mechanical compatibility.

FAQ

What is the Zener voltage tolerance of the 1N5342AE3/TR13?

The 1N5342AE3/TR13 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in its part number. This means its nominal 6.8 V Zener voltage may range from 6.12 V to 7.48 V at 25°C lead temperature under specified test conditions. This tolerance is confirmed in the Electrical Characteristics table on page 1 of the Microsemi datasheet, where "A suffix designates ±10% tolerance."

Does the 1N5342AE3/TR13 require dry packing before PCB assembly?

No, the 1N5342AE3/TR13 does not require dry packing before PCB assembly. Its moisture sensitivity level is rated IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions without desiccant or dry cabinet. This is explicitly stated in the Features section of the Microsemi datasheet as "moisture classification is Level 1 … with no dry pack required."

What is the maximum surge current rating for the 1N5342AE3/TR13?

The 1N5342AE3/TR13 has a maximum non-recurrent surge current (I_ZSM) rating of 5.2 A. This value corresponds to the peak of an 8.3 ms half-sine waveform, as defined in Note 5 of the datasheet. It reflects the device's ability to absorb transient energy without failure during overvoltage events such as ESD or inductive kickback.

How is polarity marked on the 1N5342AE3/TR13?

The 1N5342AE3/TR13 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a more positive potential than the unbanded (anode) end during reverse-bias operation. This marking convention is documented in the Mechanical and Packaging section of the datasheet under "POLARITY," and is consistent across all 1N53xx devices.

What does the "TR13" suffix indicate in the 1N5342AE3/TR13 part number?

"TR13" indicates tape-and-reel packaging per EIA-296 standard on a 13-inch reel. This format enables automated surface-mount assembly and is distinct from bulk or ammo-pack options. The datasheet confirms this in the Features section: "TAPE & REEL option: Standard per EIA-296 (add 'TR' suffix to part number)." The "e3" suffix separately denotes RoHS compliance.

1N5342AE3/TR13 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 6.8 V

Tolerance:: ±10%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 1 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 4.9 V

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1 A

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: T-18

1N5342AE3/TR13 FAQ

1.How can I place an order for 1N5342AE3/TR13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5342AE3/TR13 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 1N5342AE3/TR13 reliable?

The price and inventory of 1N5342AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5342AE3/TR13 is usually 5 days.

3.What payment methods are accepted for 1N5342AE3/TR13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5342AE3/TR13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5342AE3/TR13?

1N5342AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5342AE3/TR13 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 1N5342AE3/TR13?

For technical support, including 1N5342AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5342AE3/TR13 requirements.

6.How does Aetrix verify that 1N5342AE3/TR13 is sourced from the original manufacturer or authorized distributors?

All 1N5342AE3/TR13 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 1N5342AE3/TR13 meets industry standards.

7.What is the process for return or replacement of 1N5342AE3/TR13?

All 1N5342AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5342AE3/TR13, 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 1N5342AE3/TR13 part is unused and in its original packaging.

Return procedure for 1N5342AE3/TR13:

1.Submit a request within 90 days.

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

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