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Microchip Technology 1N5344AE3/TR13
- Part No.:
- 1N5344AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5344AE3/TR13.pdf
- Description:
- DIODE ZENER 8.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,979
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Product details
Overview
1N5344AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal zener voltage of 14 V, ±10% tolerance (A suffix), 2.5 Ω maximum dynamic impedance at 175 mA test current, and 6.7 V maximum voltage regulation (ΔVZ) across 10–50% of IZM. It regulates voltage in power supply reference and overvoltage protection circuits operating from –65 °C to +150 °C.
For engineers reviewing the 1N5344AE3/TR13 datasheet, 1N5344AE3/TR13 pinout, 1N5344AE3/TR13 application, or 1N5344AE3/TR13 equivalent, key selection criteria include its 14 V zener voltage, 175 mA test current, 2.5 Ω dynamic impedance, 6.7 V voltage regulation, and RoHS-compliant e3 termination - all critical for stable DC reference design under thermal and current variation.
Technical Context
This device operates as a reverse-biased voltage reference with a specified zener breakdown at 14 V under 175 mA dc test current. Its 2.5 Ω dynamic impedance ensures minimal voltage shift with load current changes, and its 6.7 V ΔVZ reflects regulation stability between 10% and 50% of maximum zener current (IZM = 6.7 A).
The 1N5344AE3/TR13 uses a void-free thermosetting epoxy T-18 package with tin-plated leads, rated for 5 W steady-state dissipation at 25 °C lead temperature (3/8″ from body), and exhibits 85 °C/W junction-to-ambient thermal resistance when mounted on FR4 with defined copper pads and trace geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V nominal, ±10% tolerance - defines precise DC reference point for feedback or clamping circuits. |
| Test Current (IZT) | 175 mA - operating point where VZ and dynamic impedance are guaranteed per JEDEC spec. |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low impedance ensures stable output voltage under varying load current. |
| Voltage Regulation (ΔVZ) | 6.7 V max - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity. |
| Max Zener Current (IZM) | 6.7 A - maximum continuous reverse current before exceeding 5 W power limit at TL = 25 °C. |
| Thermal Resistance (RθJA) | 85 °C/W - junction-to-ambient value on FR4 board with 4 mm² copper pad; determines required heatsinking. |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - forward conduction threshold relevant for polarity-sensitive protection layouts. |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC TO-204AA, void-free UL94V-0 epoxy body, cathode indicated by band. Leads are annealed matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference return node | Connected to circuit ground or lower-potential rail; forms reference current path with cathode. |
| Cathode | Zener voltage output terminal | Banded end; held at regulated 14 V above anode potential when reverse biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB series mechanical and electrical definitions for interchangeability. |
| RoHS-compliant termination | e3 suffix confirms lead-free matte-tin plating meeting EU RoHS Directive 2011/65/EU requirements. |
| Level 1 moisture sensitivity | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and eliminates bake-out prior to assembly. |
| High surge current rating | 120 A peak non-recurrent half-sine (8.3 ms) - supports transient overvoltage suppression without failure. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands electrostatic discharge without parameter shift or damage. |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifier circuits. IC Role / Device Role / Timing Role: Zener reference element providing fixed 14 V reference against which output is compared. Use Value: Enables ±10% output regulation accuracy with low ΔVZ and 2.5 Ω ZZ minimizing load-induced drift. |
Use Scenario: Clamping transient surges on 12 V automotive or industrial control bus lines. IC Role / Device Role / Timing Role: Shunt protection device conducting excess energy to ground when bus exceeds 14 V. Use Value: Withstands 120 A surge (8.3 ms) and maintains regulation during repeated transients without degradation. |
| DC Voltage Monitor | Calibration Standard |
Use Scenario: Detecting undervoltage or overvoltage conditions in battery-powered instrumentation. IC Role / Device Role / Timing Role: Threshold detector comparing sensed voltage against 14 V reference via comparator input. Use Value: Stable 14 V reference over –65 °C to +150 °C enables reliable trip-point detection across wide environmental range. |
Use Scenario: Providing traceable 14 V reference in portable multimeter or benchtop calibrator designs. IC Role / Device Role / Timing Role: Primary voltage standard in self-contained calibration subsystem. Use Value: ±10% tolerance and low 6.7 V ΔVZ support repeatable, field-serviceable calibration without external adjustment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5344B | Same 14 V nominal VZ, but ±5% tolerance (B suffix) and 2.5 Ω ZZ at 175 mA - tighter voltage spec, identical power and thermal ratings. | Preferred where tighter regulation tolerance is required, e.g., precision feedback loops or metrology-grade references. | Select 1N5344B if ±5% VZ is mandatory; 1N5344AE3/TR13 remains optimal for cost-sensitive, general-purpose 14 V clamping. |
| MMBZ5242B (SOT-23) | Surface-mount 14 V Zener, 0.35 W rating, ±5% tolerance, 20 Ω ZZ - lower power, higher impedance, different package and thermal profile. | Suitable only for low-current biasing or signal-level clamping; cannot replace 1N5344AE3/TR13 in 5 W power applications. | Choose MMBZ5242B only for space-constrained PCBs with <100 mA zener current; not a functional replacement for 5 W load handling. |
Compared with 1N5344B and MMBZ5242B, the 1N5344AE3/TR13 delivers the highest power capability (5 W), lowest dynamic impedance (2.5 Ω), and axial-leaded mechanical robustness - making it uniquely suited for high-reliability, high-current voltage reference and protection roles where thermal margin and surge resilience are critical.
Availability
1N5344AE3/TR13 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and DC voltage monitor applications requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for 1N5344AE3/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 discrete components for aerospace, defense, and industrial markets.
The 1N53xx series was designed as a JEDEC-standardized family of 5 W axial Zeners for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and long-term parametric consistency.
FAQ
What is the zener voltage tolerance of the 1N5344AE3/TR13?
The 1N5344AE3/TR13 has a ±10% zener voltage tolerance, indicated by the "A" suffix in its part number. This means its actual breakdown voltage falls between 12.6 V and 15.4 V at 175 mA test current and 25 °C lead temperature, per JEDEC specification and Microsemi's published electrical characteristics table.
Does the 1N5344AE3/TR13 require dry packing before PCB assembly?
No, the 1N5344AE3/TR13 does not require dry packing. It carries IPC/JEDEC J-STD-020B Level 1 moisture sensitivity rating, meaning it can be stored and assembled without baking or humidity-controlled handling - simplifying manufacturing logistics and reducing process risk.
What is the maximum surge current rating for the 1N5344AE3/TR13?
The 1N5344AE3/TR13 is rated for a maximum non-recurrent surge current (IZSM) of 120 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating is confirmed in Microsemi's official datasheet and supports robust transient suppression in automotive and industrial power rails.
How is the cathode identified on the 1N5344AE3/TR13?
The cathode of the 1N5344AE3/TR13 is marked by a visible color band on the epoxy body. When installed, the banded end must be held at a more positive potential than the anode (unbanded end) to achieve reverse-biased zener operation - correct polarity is essential for proper voltage regulation.
What thermal resistance applies when the 1N5344AE3/TR13 is mounted on a standard FR4 PCB?
When mounted on an FR4 printed circuit board with 1 oz copper, 4 mm² copper pad, and 1 mm × 25 mm trace, the 1N5344AE3/TR13 exhibits a junction-to-ambient thermal resistance (RθJA) of 85 °C/W. This value is critical for calculating safe operating temperature rise under sustained 5 W dissipation.
1N5344AE3/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:
- ±10%
- 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
1N5344AE3/TR13 FAQ
1.How can I place an order for 1N5344AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5344AE3/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 1N5344AE3/TR13 reliable?
The price and inventory of 1N5344AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5344AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5344AE3/TR13?
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1N5344AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5344AE3/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 1N5344AE3/TR13?
For technical support, including 1N5344AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5344AE3/TR13 requirements.
6.How does Aetrix verify that 1N5344AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5344AE3/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 1N5344AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5344AE3/TR13?
All 1N5344AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5344AE3/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 1N5344AE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5344AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5344AE3/TR13 Tags
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