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Microchip Technology 1N5354AE3/TR8
- Part No.:
- 1N5354AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354AE3/TR8.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,817
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Product details
Overview
1N5354AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±10% tolerance (A suffix), 70 mA maximum Zener current (IZM), 2.5 Ω dynamic impedance (ZZ) at 70 mA test current, and operates from –65°C to +150°C. It serves as a precision voltage reference or shunt regulator in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N5354AE3/TR8 datasheet, 1N5354AE3/TR8 pinout, 1N5354AE3/TR8 application, or 1N5354AE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (10 A), reverse leakage (0.5 µA at 12.2 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a shunt voltage regulator by maintaining a stable reverse-biased breakdown voltage across its terminals under varying load and line conditions. Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation with current changes up to 70 mA, and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W operation when mounted with ≥10 mm lead length from body.
The 1N5354AE3/TR8 uses a void-free thermosetting epoxy case (UL94V-0 rated) with cathode band polarity marking and is rated for 260 °C soldering (10 s max). It meets moisture sensitivity Level 1 per J-STD-020B-no dry pack required-and exhibits ESD insensitivity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V ±10% - defines regulated output voltage under nominal test current; high-end tolerance = 18.7 V for IZM calculation. |
| Test Current (IZT) | 70 mA - dc current at which VZ is measured; establishes baseline operating point for regulation accuracy. |
| Dynamic Impedance (ZZ) | 2.5 Ω - small-signal ac resistance at IZT; determines voltage deviation under load transients. |
| Max Reverse Current (IR) | 0.5 µA at 12.2 V - leakage below breakdown; critical for low-power standby regulation stability. |
| Max Zener Current (IZM) | 70 mA - maximum continuous dc current at 25 °C lead temperature; derates linearly above 25 °C. |
| Surge Current (IZSM) | 10 A (8.3 ms half-sine) - peak non-repetitive surge capability; supports transient overvoltage clamping. |
| Voltage Regulation (ΔVZ) | 0.35 V - difference between VZ at 10% and 50% of IZM; quantifies regulation linearity across operating range. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free thermosetting epoxy, UL94V-0), 0.7 g weight, cathode indicated by colored band. Leads are annealed matte-tin plated (RoHS compliant, solderable per MIL-STD-750 Method 2026).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; reverse bias applied to cathode for regulation. |
| Cathode | Zener breakdown terminal / regulation output node | Banded end; connected to unregulated input; maintains stable 17 V relative to anode during reverse conduction. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized mechanical dimensions, marking, and electrical behavior across global suppliers. |
| ±10% voltage tolerance (A suffix) | Provides cost-optimized regulation accuracy suitable for non-critical power rails and protection circuits. |
| RoHS-compliant e3 suffix | Confirms lead-free matte-tin plating and full compliance with EU RoHS Directive 2011/65/EU. |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints-ready for standard SMT/reflow or hand-solder processes. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Enables handling without special static controls-reduces assembly risk in industrial environments. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler interface. IC Role / Device Role / Timing Role: Shunt reference providing precise 17 V threshold to TL431-like control IC or discrete transistor comparator. Use Value: Maintains ±10% output regulation across line/load variations; low ΔVZ (0.35 V) minimizes feedback error propagation. | Use Scenario: Protects downstream 15 V logic rail from transient surges exceeding 18.7 V (VZ max). IC Role / Device Role / Timing Role: Passive clamp element conducting only when input exceeds 17 V ±10%, diverting excess current to ground. Use Value: Absorbs 10 A surge (8.3 ms) without failure; 0.5 µA leakage at 12.2 V avoids loading sensitive analog nodes. |
| Industrial Sensor Excitation | Programmable Voltage Reference |
Use Scenario: Supplies stable excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh ambient (-40°C to +85°C). IC Role / Device Role / Timing Role: Low-drift shunt regulator establishing fixed bias point independent of supply ripple. Use Value: Operates continuously from –65°C to +150°C; 25 °C/W thermal resistance allows direct PCB mounting without heatsink. | Use Scenario: Sets reference voltage for ADC/DAC biasing or comparator thresholds in test equipment calibration paths. IC Role / Device Role / Timing Role: Precision voltage source replacing higher-cost references where ±10% tolerance is acceptable. Use Value: Delivers 70 mA max current with 2.5 Ω ZZ, enabling stable reference under moderate load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B | Same 17 V nominal VZ, but ±5% tolerance (B suffix); identical package, IZM, ZZ, and thermal specs. | Higher regulation accuracy required in feedback loops where tighter output tolerance is mandated. | Select 1N5354B when ±5% VZ is needed; otherwise 1N5354AE3/TR8 offers cost advantage for less critical rails. |
| SMBJ5354B | Surface-mount SMB package; same 17 V ±5%, 5 W rating, but different thermal resistance (junction-to-ambient ≈ 85 °C/W on FR4). | Required for space-constrained PCB layouts or automated SMT assembly; not drop-in compatible due to package and thermal profile. | Choose SMBJ5354B only when board real estate or assembly process demands SMT; axial 1N5354AE3/TR8 remains optimal for through-hole or high-reliability lead-mounted designs. |
Compared with 1N5354B and SMBJ5354B, the 1N5354AE3/TR8 provides cost-effective ±10% regulation in axial form with superior junction-to-lead thermal performance (25 °C/W), making it ideal for through-hole power supplies and industrial clamps where layout flexibility and thermal robustness outweigh tight tolerance needs.
Availability
1N5354AE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply, tape-and-reel packaging (TR8), and RoHS-compliant manufacturing.
Supply support for 1N5354AE3/TR8 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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in mission-critical power systems-emphasizing wide temperature operation, surge resilience, and JEDEC-standardized axial packaging for long-term field reliability.
FAQ
What is the Zener voltage tolerance of the 1N5354AE3/TR8?
The 1N5354AE3/TR8 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual breakdown voltage falls between 15.3 V and 18.7 V at 70 mA test current and 25 °C lead temperature. The "e3" suffix confirms RoHS compliance, and "TR8" denotes tape-and-reel packaging with 8 mm carrier tape.
How much power can the 1N5354AE3/TR8 dissipate continuously?
The 1N5354AE3/TR8 is rated for 5.0 W steady-state power dissipation at 25 °C lead temperature (TL), with thermal resistance of 25 °C/W junction-to-lead at 10 mm lead length. When mounted on FR4 PCB with specified copper pads, its derated power drops to 1.47 W at 25 °C ambient. Derating curves in the Microsemi datasheet define safe operating limits above 25 °C.
What is the maximum reverse leakage current for the 1N5354AE3/TR8?
The 1N5354AE3/TR8 specifies a maximum reverse leakage current (IR) of 0.5 µA at 12.2 V (90% of nominal VZ). This value is measured under standard test conditions (25 °C) and reflects the device's ability to remain effectively non-conductive below its Zener knee, ensuring minimal parasitic loading in high-impedance reference circuits.
Is the 1N5354AE3/TR8 suitable for surge protection applications?
Yes-the 1N5354AE3/TR8 supports a peak non-repetitive surge current (IZSM) of 10 A for an 8.3 ms half-sine waveform, making it suitable for transient overvoltage clamping. Its 17 V regulation threshold and low dynamic impedance (2.5 Ω) enable rapid response to surges while maintaining stable clamping voltage, provided adequate heat sinking is used for repeated events.
Does the 1N5354AE3/TR8 require dry packing before use?
No-the 1N5354AE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and requires no dry pack or baking prior to soldering. Its void-free thermosetting epoxy case inherently resists moisture absorption, allowing immediate use in reflow, wave, or hand-solder processes per MIL-STD-202 Method 2026.
1N5354AE3/TR8 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):
- 17 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 12.2 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
1N5354AE3/TR8 FAQ
1.How can I place an order for 1N5354AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354AE3/TR8 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 1N5354AE3/TR8 reliable?
The price and inventory of 1N5354AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5354AE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354AE3/TR8 transactions.
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4.How is shipping managed for 1N5354AE3/TR8?
1N5354AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354AE3/TR8 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 1N5354AE3/TR8?
For technical support, including 1N5354AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354AE3/TR8 requirements.
6.How does Aetrix verify that 1N5354AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5354AE3/TR8 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 1N5354AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5354AE3/TR8?
All 1N5354AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354AE3/TR8, 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 1N5354AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5354AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354AE3/TR8 Tags
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BZT52C5V6T-7
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MM5Z5V1ST1G
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