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Microchip Technology 1N5342E3/TR13
- Part No.:
- 1N5342E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5342E3/TR13.pdf
- Description:
- DIODE ZENER 6.8V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
1N5342E3/TR13 from Microsemi is a 5.1 V, ±5% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection, and reference applications. It delivers 240 mA maximum Zener test current (IZT), 1.5 Ω dynamic impedance (ZZ), and operates across –65°C to +150°C.
For engineers reviewing the 1N5342E3/TR13 datasheet, 1N5342E3/TR13 pinout, 1N5342E3/TR13 application, or 1N5342E3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (14.4 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a precision shunt voltage regulator, maintaining stable output voltage under varying load and temperature conditions. Its low dynamic impedance (1.5 Ω) ensures minimal voltage deviation across 10–50% of IZM, and its 25 °C/W junction-to-lead thermal resistance supports reliable operation at full 5 W dissipation with 3/8″ lead length heat sinking.
The 1N5342E3/TR13 uses a void-free UL94V-0 thermosetting epoxy case with cathode band polarity marking and is rated for 260 °C soldering (10 s). It meets MIL-STD-750 Method 1020 for ESD insensitivity and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V ±5% - precise regulation point for 5 V system references |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C - enables high-current regulation with adequate heatsinking |
| Zener Test Current (IZT) | 240 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 1.5 Ω - low AC resistance ensures tight voltage regulation under dynamic load changes |
| Max Surge Current (IZSM) | 14.4 A (8.3 ms half-sine) - withstands transient overvoltage events in power rails |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - allows direct thermal path to PCB copper or chassis |
| Reverse Leakage (IR) | 10 μA @ VR = 3.9 V - low leakage preserves efficiency in high-impedance bias networks |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), 0.7 g weight, cathode indicated by color band. Leads are annealed matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during reverse breakdown | Connected to lower-potential node (e.g., ground or return path) in shunt regulator configuration |
| Cathode | Current exit terminal during reverse breakdown | Banded end; connected to regulated voltage node - must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant e3 suffix | Matte-tin lead finish meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 |
| Tight ±5% VZ tolerance (B suffix) | Reduces need for post-production trimming in voltage reference circuits |
| Level 1 moisture sensitivity | No dry pack or baking required before SMT reflow - simplifies manufacturing handling |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling protocols during assembly and test |
| High IZM (930 mA) | Supports robust overvoltage clamping in 12 V automotive and industrial power rails |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 5.1 V threshold for TL431-like control loop stability. Use Value: 1.5 Ω ZZ minimizes output ripple contribution; ±5% VZ tolerance ensures <±0.26 V error at nominal load. | Use Scenario: Protects 5 V logic rails from transient surges in PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping voltage above 5.1 V during EFT or ESD events. Use Value: 14.4 A IZSM handles 1 kV/500 A surge pulses per IEC 61000-4-5; 25 °C/W RθJL prevents thermal runaway during repeated clamping. |
| Programmable Voltage Reference | Automotive Battery Monitoring |
Use Scenario: Sets accurate bias points in analog sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Stable DC reference source for op-amp offset nulling or ADC reference scaling. Use Value: ΔVZ = 0.39 V (10–50% IZM) ensures <±0.04 V drift across operating current range; –65°C to +150°C rating supports extended temperature designs. | Use Scenario: Monitors 12 V battery voltage in engine control units with wide ambient variation. IC Role / Device Role / Timing Role: Zener-based comparator input threshold for low-battery warning circuitry. Use Value: 10 μA IR at 3.9 V guarantees negligible current draw on battery; UL94V-0 case withstands under-hood thermal cycling. |
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 VZ (5.1 V), ±5%, but non-RoHS tin-lead plating; no e3 suffix | Not suitable for RoHS-compliant production; requires Pb-containing solder process | Select 1N5342B only for legacy repair or non-RoHS environments |
| MMSZ5231B-TP | Surface-mount SOD-123 package; 5.1 V ±5%; 500 mW rating (not 5 W) | Limited to low-power biasing; cannot replace 1N5342E3/TR13 in high-current regulation | Use MMSZ5231B-TP only in space-constrained, low-power designs where thermal mass is limited |
Compared with 1N5342B and MMSZ5231B-TP, the 1N5342E3/TR13 uniquely combines RoHS compliance, 5 W power handling, axial-leaded mechanical robustness, and 25 °C/W thermal resistance - making it the only option for high-reliability, high-current, through-hole Zener regulation in industrial and automotive systems.
Availability
1N5342E3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply and long-term lifecycle support.
Supply support for 1N5342E3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized, high-power Zener regulation in harsh-environment power systems - emphasizing thermal performance, surge resilience, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of the 1N5342E3/TR13?
The 1N5342E3/TR13 has a Zener voltage tolerance of ±5%, as indicated by the "B" in its base part number (1N5342B) and confirmed in Microsemi's REV D datasheet. This tolerance applies at 25°C lead temperature with 240 mA test current, enabling predictable regulation within ±0.255 V of 5.1 V in production designs.
Does the 1N5342E3/TR13 require dry packing before use?
No, the 1N5342E3/TR13 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored and processed without baking or humidity-controlled packaging - simplifying handling in standard manufacturing environments.
What is the maximum surge current rating for the 1N5342E3/TR13?
The 1N5342E3/TR13 has a maximum non-recurrent surge current (IZSM) of 14.4 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating supports robust transient suppression in 12 V automotive and industrial power bus applications without degradation.
How is polarity marked on the 1N5342E3/TR13?
The 1N5342E3/TR13 uses a cathode band - a single colored ring near one end of the axial body - to indicate the cathode terminal. The banded end must be held at higher potential than the opposite (anode) end during normal Zener operation, consistent with standard diode marking conventions.
What is the thermal resistance from junction to lead for the 1N5342E3/TR13?
The thermal resistance from junction to lead (RθJL) for the 1N5342E3/TR13 is 25 °C/W when measured at 3/8″ (10 mm) lead length from the body. This low value enables effective heat conduction into PCB copper pours or metal chassis, supporting continuous 5 W operation with appropriate mechanical mounting.
1N5342E3/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:
- ±20%
- 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
1N5342E3/TR13 FAQ
1.How can I place an order for 1N5342E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5342E3/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 1N5342E3/TR13 reliable?
The price and inventory of 1N5342E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5342E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5342E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5342E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5342E3/TR13?
1N5342E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5342E3/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 1N5342E3/TR13?
For technical support, including 1N5342E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5342E3/TR13 requirements.
6.How does Aetrix verify that 1N5342E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5342E3/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 1N5342E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5342E3/TR13?
All 1N5342E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5342E3/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 1N5342E3/TR13 part is unused and in its original packaging.
Return procedure for 1N5342E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5342E3/TR13 Tags
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MM5Z5V1ST1G
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