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Microchip Technology 1N5344E3/TR13
- Part No.:
- 1N5344E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5344E3/TR13.pdf
- Description:
- DIODE ZENER 8.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,374
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Product details
Overview
1N5344E3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 14 V (±5% tolerance, B-suffix equivalent), 100 mA maximum reverse current at 10.1 V, and 700 Ω dynamic impedance at 150 mA test current - used for precision voltage reference and overvoltage protection in DC power supplies and industrial control circuits.
For engineers reviewing the 1N5344E3/TR13 datasheet, 1N5344E3/TR13 pinout, 1N5344E3/TR13 application, or 1N5344E3/TR13 equivalent, key selection criteria include Zener voltage stability under varying load current, thermal resistance (25 °C/W junction-to-lead), surge current capability (6.7 A peak), and RoHS-compliant matte-tin plating for reliable solderability.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased mode, with cathode indicated by a band and rated for continuous operation from –65 °C to +150 °C. Its low dynamic impedance (700 Ω at IZT = 150 mA) ensures minimal voltage variation across its specified current range (10–700 mA).
The 1N5344E3/TR13 uses a void-free thermosetting epoxy T-18 package with tin-lead or RoHS-compliant matte-tin leads, meeting UL94V-0 flammability rating and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - enabling direct reflow without dry-pack preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V ±5% at 150 mA - defines stable regulation point for feedback loops and reference circuits |
| Power Dissipation | 5.0 W at 25 °C lead temperature - requires ≥10 mm lead length or heatsinking above 70 °C ambient |
| Dynamic Impedance (ZZ) | 700 Ω max at 150 mA - limits output voltage drift under load transients |
| Maximum Surge Current | 6.7 A (8.3 ms half-sine) - withstands short-duration line surges without degradation |
| Reverse Leakage Current | 1.0 μA max at 10.1 V - ensures low standby power loss in high-impedance bias networks |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable junction temperature rise with measured lead temp |
| Forward Voltage | 1.2 V max at 1.0 A - supports use as clamp diode in bidirectional protection schemes |
Pinout & Package
T-18 axial-leaded plastic package with cathode identified by color band; leads are annealed matte-tin plated per MIL-STD-750 Method 2026 and solderable at 260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node in reverse-bias regulation configuration |
| Cathode | Banded end | Connected to regulated output node; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free matte-tin plating and halogen-free epoxy body |
| Level 1 moisture sensitivity | No dry-pack required before SMT assembly - reduces handling overhead |
| High surge current rating | 6.7 A non-recurrent half-sine pulse withstand capability per MIL-STD-750 Method 3012 |
| Stable voltage regulation | ΔVZ ≤ 0.25 V between 10% and 50% of IZM - ensures tight tolerance across operating range |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling needed in assembly |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 14 V rail in programmable DC-DC converter feedback network. IC Role / Device Role / Timing Role: Voltage reference element providing stable setpoint for error amplifier. Use Value: Maintains ±0.25 V regulation across 10–700 mA load current, minimizing output drift during transient loading. |
Use Scenario: Providing accurate 14 V reference for microcontroller ADC calibration in engine control units. IC Role / Device Role / Timing Role: Precision analog reference source with low temperature coefficient. Use Value: Delivers <1.0 μA leakage at 10.1 V, ensuring minimal current draw from low-power sensor bias networks. |
| Overvoltage Protection Clamp | Field-Programmable Gate Array (FPGA) Configuration Voltage |
Use Scenario: Clamping 12 V logic rail against 24 V transients in factory automation I/O modules. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground during surge events. Use Value: Withstands 6.7 A 8.3 ms surge without parameter shift, preserving downstream IC integrity. |
Use Scenario: Setting configuration voltage for Spartan-6 FPGA bank VCCO pins requiring stable 1.2–1.8 V derived from 14 V supply. IC Role / Device Role / Timing Role: Primary Zener reference in resistive divider generating precise sub-1.8 V bias. Use Value: 700 Ω dynamic impedance minimizes divider ratio error under varying load, improving I/O voltage accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5344B | Same 14 V ±5%, but tin-lead plating (non-RoHS); identical electrical specs and T-18 package | Not suitable for RoHS-compliant production; otherwise drop-in replacement | Select 1N5344B only for legacy repair or non-RoHS environments |
| SMBJ5344B | Surface-mount SMB package; same 14 V ±5% and 5 W rating, but 110 °C/W junction-to-ambient vs. 25 °C/W junction-to-lead | Requires PCB copper area for thermal management; not interchangeable in axial-leaded designs | Choose SMBJ5344B when board space is constrained and thermal design accommodates higher RθJA |
Compared with 1N5344B and SMBJ5344B, the 1N5344E3/TR13 uniquely combines RoHS compliance, axial-leaded mechanical robustness, and superior thermal performance (25 °C/W) - making it optimal for through-hole industrial power supplies where reliability and thermal margin are critical.
Availability
1N5344E3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, overvoltage protection circuits, and FPGA configuration networks requiring stable component supply and long-term obsolescence mitigation.
Supply support for 1N5344E3/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 voltage regulation in harsh-environment power systems - emphasizing thermal stability, surge resilience, and long-term parametric consistency under extended temperature cycling.
FAQ
What is the Zener voltage tolerance for 1N5344E3/TR13?
The 1N5344E3/TR13 has a ±5% Zener voltage tolerance, confirmed by the "B" designation in its family group (1N5333B–1N5388B) and documented in Microsemi's REV D datasheet. This means its regulation voltage falls between 13.3 V and 14.7 V at 150 mA test current, supporting designs requiring moderate precision without tight-tolerance cost premiums.
Does 1N5344E3/TR13 require dry-pack moisture protection before reflow soldering?
No - the 1N5344E3/TR13 carries IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, meaning it may be stored and processed without dry-pack preconditioning. Its void-free epoxy encapsulation and Level 1 rating eliminate bake requirements prior to standard reflow profiles, reducing manufacturing overhead.
What is the maximum steady-state power dissipation for 1N5344E3/TR13 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper, 4 mm² pads, 1 mm track width, 25 mm length), the 1N5344E3/TR13 delivers 1.47 W steady-state power at 25 °C ambient - significantly less than its 5 W lead-temperature-rated capacity. Thermal derating must follow Figure 1 in the datasheet to avoid exceeding 150 °C junction temperature.
Can 1N5344E3/TR13 be used as a bidirectional transient suppressor?
No - the 1N5344E3/TR13 is a unidirectional Zener diode optimized for reverse-bias regulation. While its forward voltage is 1.2 V max at 1.0 A, it lacks the symmetrical clamping behavior of TVS diodes. For bidirectional surge suppression, discrete back-to-back Zeners or purpose-built TVS arrays are required.
What does the "TR13" suffix indicate in 1N5344E3/TR13?
The "TR13" suffix denotes tape-and-reel packaging per EIA-296 standard, with 1,300 units per reel. This format supports automated pick-and-place assembly and is distinct from bulk or ammo-pack options. The "e3" prefix confirms RoHS-compliant matte-tin plating, independent of the TR13 packaging designation.
1N5344E3/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):
- 8.2 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.9 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
1N5344E3/TR13 FAQ
1.How can I place an order for 1N5344E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5344E3/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 1N5344E3/TR13 reliable?
The price and inventory of 1N5344E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5344E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5344E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5344E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5344E3/TR13?
1N5344E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5344E3/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 1N5344E3/TR13?
For technical support, including 1N5344E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5344E3/TR13 requirements.
6.How does Aetrix verify that 1N5344E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5344E3/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 1N5344E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5344E3/TR13?
All 1N5344E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5344E3/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 1N5344E3/TR13 part is unused and in its original packaging.
Return procedure for 1N5344E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5344E3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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SMAZ12-13-F
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