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Microchip Technology 1N5342BE3/TR13
- Part No.:
- 1N5342BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5342BE3/TR13.pdf
- Description:
- DIODE ZENER 6.8V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,247
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Product details
Overview
1N5342BE3/TR13 from Microsemi is a 5.0 W axial-leaded silicon Zener diode with nominal regulation voltage of 6.8 V, ±5% tolerance (B suffix), 175 mA test current (IZT), 1.0 Ω maximum dynamic impedance (ZZ), and 700 mA maximum Zener current (IZM) at 25°C lead temperature. It regulates voltage in power supply reference and overvoltage protection circuits across industrial and automotive systems.
For engineers reviewing the 1N5342BE3/TR13 datasheet, 1N5342BE3/TR13 pinout, 1N5342BE3/TR13 application, or 1N5342BE3/TR13 equivalent, key selection factors include its 6.8 V regulation accuracy, 1.0 Ω low-impedance knee, 700 mA IZM capability with heatsinking, RoHS-compliant e3 plating, and TR13 tape-and-reel packaging for automated assembly.
Technical Context
This Zener operates in reverse-bias breakdown mode to maintain stable voltage under varying load and temperature conditions. Its 25 °C/W junction-to-lead thermal resistance enables 5.0 W dissipation at TL < 25°C with 3/8″ lead length, while derated to 1.47 W at TA = 25°C on FR4 board.
Regulation performance is defined by ΔVZ ≤ 0.15 V (difference between voltage at 10% and 50% of IZM), ZZK ≤ 200 Ω at 1.0 mA, and VR = 5.2 V for IR ≤ 10 μA - confirming tight low-current stability and minimal voltage drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±5% - precise reference voltage for feedback loops and clamping |
| Test Current (IZT) | 175 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 1.0 Ω max - low AC resistance ensures minimal voltage variation under ripple |
| Max Zener Current (IZM) | 700 mA - peak DC current sustainable with adequate heatsinking |
| Power Dissipation | 5.0 W at TL < 25°C - requires 3/8″ lead length for full rating |
| Reverse Leakage (IR) | 10 μA max at VR = 5.2 V - low off-state current minimizes standby loss |
| Voltage Regulation (ΔVZ) | 0.15 V max - difference between VZ at 10% and 50% of IZM |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-201AD; cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / voltage regulation output | Banded end; connected to regulated rail; sustains 6.8 V reverse bias during regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with DO-201AD mechanical and electrical standards for interchangeability |
| ±5% voltage tolerance (B suffix) | Ensures predictable regulation without post-manufacture trimming |
| RoHS-compliant e3 marking | Meets EU Directive 2011/65/EU; tin-lead-free matte-tin plating |
| Level 1 moisture sensitivity | Zero dry-pack requirement simplifies handling and storage logistics |
| High surge current rating | 11.5 A non-recurrent half-sine (8.3 ms) withstands transient overvoltage events |
Applications
| Switch-Mode Power Supply Feedback | Automotive ECU Voltage Clamp |
|---|---|
Use Scenario: Provides precision 6.8 V reference in optocoupler-coupled feedback loop of 12 V input DC-DC converter. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator to set error amplifier threshold and stabilize output voltage. Use Value: 1.0 Ω ZZ and 0.15 V ΔVZ ensure <±0.2% output variation under 10–90% load steps. | Use Scenario: Clamps microcontroller I/O line against load-dump transients up to 120 V in 24 V commercial vehicle ECU. IC Role / Device Role / Timing Role: Passive overvoltage protector absorbing energy during ISO 7637-2 Pulse 5a events. Use Value: 11.5 A surge rating and 6.8 V clamping threshold protect 5 V logic rails without crowbar action. |
| Industrial Sensor Signal Conditioning | Programmable Logic Controller Input Protection |
Use Scenario: Stabilizes excitation voltage for 4–20 mA current-loop pressure sensor in factory automation cabinet. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 6.8 V bias across sensor bridge, independent of 18–30 V supply fluctuations. Use Value: 700 mA IZM supports up to three parallel sensors while holding regulation within ±0.15 V. | Use Scenario: Protects 24 V digital input channel from field-wiring induced surges and polarity reversal in PLC backplane. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting input voltage to safe clamp level before Schottky front-end stage. Use Value: 10 μA IR at 5.2 V ensures negligible leakage current during normal 24 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5342BRLG | Same 6.8 V ±5%, 5 W rating, but in bulk packaging (no tape/reel); identical electrical specs | No TR13 reel format - unsuitable for high-speed pick-and-place | Select 1N5342BRLG only for manual prototyping or low-volume hand-soldering |
| MMBZ5235B-TP | Surface-mount SOD-123 package; 6.8 V ±5%; 0.5 W rating; 100 mA IZM; 10 Ω ZZ | Limited power handling - not suitable for >100 mA regulation or surge absorption | Choose MMBZ5235B-TP only for space-constrained PCBs where 5 W dissipation is unnecessary |
Compared with 1N5342BE3/TR13, 1N5342BRLG offers identical regulation performance but lacks tape-and-reel convenience, while MMBZ5235B-TP trades power capability and surge robustness for miniaturization - making the 1N5342BE3/TR13 optimal for high-reliability, medium-power axial-leaded designs.
Availability
1N5342BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, sensor interface modules, and programmable logic controller input stages requiring stable component supply and long-term obsolescence management.
Supply support for 1N5342BE3/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 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge immunity, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5342BE3/TR13?
The 1N5342BE3/TR13 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its measured VZ at 175 mA test current falls within 6.46 V to 7.14 V at 25°C lead temperature. The e3 suffix confirms RoHS compliance, and TR13 denotes tape-and-reel packaging - all consistent with Microsemi's published specifications for this variant.
Can the 1N5342BE3/TR13 be used without a heatsink?
The 1N5342BE3/TR13 can operate at up to 1.47 W continuously without a heatsink when mounted on an FR4 PCB with 4 mm² copper pads and 1 mm track width, per its 85°C/W junction-to-ambient thermal resistance. Full 5.0 W dissipation requires TL < 25°C with 3/8″ lead length - meaning external heatsinking or forced-air cooling is mandatory above ~1.5 W in typical ambient conditions.
What does the "TR13" suffix mean in 1N5342BE3/TR13?
The "TR13" suffix in 1N5342BE3/TR13 indicates EIA-296 standard tape-and-reel packaging with 13-inch reels. This format supports automated SMT placement equipment and ensures consistent orientation (cathode band facing outward). The base part 1N5342BE3 remains electrically and mechanically identical - TR13 adds only packaging and logistics compatibility for high-volume manufacturing.
How does the 1N5342BE3/TR13 perform under surge conditions?
The 1N5342BE3/TR13 is rated for 11.5 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform, per Microsemi's datasheet. This enables reliable clamping during ISO 7637-2 load-dump transients or inductive switching spikes. Its 6.8 V regulation and low ΔVZ (0.15 V) ensure stable clamping voltage even during surge recovery, distinguishing it from generic TVS diodes with wider clamping spreads.
Is the 1N5342BE3/TR13 suitable for precision reference applications?
The 1N5342BE3/TR13 provides adequate precision for industrial-grade references - with ±5% VZ tolerance, 1.0 Ω dynamic impedance, and 0.15 V voltage regulation - but is not intended for metrology or high-accuracy instrumentation. For sub-1% stability, designers should consider temperature-compensated references like the LM385 or REF50xx series. The 1N5342BE3/TR13 excels where cost, ruggedness, and power-handling outweigh ultra-fine voltage accuracy.
1N5342BE3/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:
- ±5%
- 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
1N5342BE3/TR13 FAQ
1.How can I place an order for 1N5342BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5342BE3/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 1N5342BE3/TR13 reliable?
The price and inventory of 1N5342BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5342BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5342BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5342BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5342BE3/TR13?
1N5342BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5342BE3/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 1N5342BE3/TR13?
For technical support, including 1N5342BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5342BE3/TR13 requirements.
6.How does Aetrix verify that 1N5342BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5342BE3/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 1N5342BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5342BE3/TR13?
All 1N5342BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5342BE3/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 1N5342BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5342BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5342BE3/TR13 Tags
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