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Microchip Technology 1N5354AE3/TR12
- Part No.:
- 1N5354AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354AE3/TR12.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,722
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Product details
Overview
1N5354AE3/TR12 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 test current (IZT), 2.5 Ω maximum dynamic impedance (ZZ), and 5.8 A maximum Zener current (IZM) at 25°C lead temperature. It delivers stable voltage reference in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N5354AE3/TR12 datasheet, 1N5354AE3/TR12 pinout, 1N5354AE3/TR12 application, or 1N5354AE3/TR12 equivalent, key selection criteria include its 17 V Zener voltage, ±10% tolerance, 5 W power rating, axial T-18 package, and RoHS-compliant e3 plating - all critical for industrial power rail stabilization and legacy design replacement.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to clamp voltage across its terminals within defined regulation limits. Its low 2.5 Ω dynamic impedance ensures minimal voltage shift under varying load currents, and its 25 °C/W junction-to-lead thermal resistance supports reliable operation up to 5 W when mounted with ≥10 mm lead length from body.
The 1N5354AE3/TR12 is rated for -65°C to +150°C operating temperature, exhibits ≤0.5 µA reverse leakage at 12.2 V (VR), and maintains voltage regulation (ΔVZ) of ≤0.35 V between 10% and 50% of IZM - confirming tight regulation performance across its specified current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V nominal, ±10% tolerance - defines precise clamping threshold for 15.3–18.7 V regulation window |
| Power Dissipation | 5.0 W at TL = 25°C (3/8″ lead length) - sets maximum continuous thermal load without derating |
| Zener Test Current (IZT) | 70 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 2.5 Ω max - ensures <26 mV voltage change per 10 mA current variation near IZT |
| Max Reverse Leakage (IR) | 0.5 µA at VR = 12.2 V - confirms negligible standby current in high-impedance bias networks |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with discrete heatsinking via leads |
| Surge Current (IZSM) | 5.8 A peak (8.3 ms half-sine) - supports transient overvoltage suppression without failure |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC TO-204-AD), void-free thermosetting epoxy body (UL94V-0), matte-tin RoHS-compliant plating, cathode indicated by band. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode |
| Cathode | Zener breakdown terminal / Regulated output node | Banded end; held at stable 17 V relative to anode during regulation; used for feedback or clamping |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB family mechanical and electrical definitions for interchangeability |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies SMT reflow prep and long-term storage logistics |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special handling in assembly |
| High surge current capability | 5.8 A non-recurrent surge (8.3 ms) - withstands line transients without parameter shift or failure |
| Stable voltage regulation | ΔVZ ≤ 0.35 V across 10–50% IZM - ensures predictable error margin in precision feedback paths |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler feedback. IC Role / Device Role / Timing Role: Voltage reference element in secondary-side error amplifier loop. Use Value: Maintains ±1% output accuracy over line/load/temperature with 2.5 Ω ZZ limiting feedback error contribution. |
Use Scenario: Protecting microcontroller I/O pins from 24 V field wiring surges. IC Role / Device Role / Timing Role: Shunt clamping device placed between signal line and ground. Use Value: Clamps transients to ≤18.7 V (VZ + tolerance) before damage threshold, with 5.8 A surge rating absorbing IEC 61000-4-5 level 3 energy. |
| Legacy Equipment Replacement | Programmable Reference Divider |
Use Scenario: Replacing obsolete 1N5354A in aerospace maintenance spares inventory. IC Role / Device Role / Timing Role: Drop-in mechanical and electrical substitute in through-hole power boards. Use Value: Identical T-18 outline, 17 V ±10% VZ, and 5 W rating ensure no PCB or firmware changes required. |
Use Scenario: Generating stable 8.5 V reference from 17 V rail using matched resistor divider. IC Role / Device Role / Timing Role: Precision voltage source enabling accurate ratio-based scaling. Use Value: Low ΔVZ (≤0.35 V) and tight thermal coefficient minimize divider output drift across -55°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B | ±5% tolerance (vs. ±10% for 1N5354AE3/TR12); identical VZ, IZT, ZZ, and package | Higher precision needed in feedback loops where tighter regulation window reduces output error | Select 1N5354B when system-level accuracy demands <±0.85 V deviation at 17 V nominal |
| MMBZ5246BS | Surface-mount SOT-23 package; 17 V ±5%; 250 mW rating (vs. 5 W); 30 Ω ZZ | Space-constrained PCBs where thermal mass and surge immunity are secondary to footprint | Choose MMBZ5246BS only for low-power bias networks - not for primary regulation or surge clamping |
Compared with 1N5354B and MMBZ5246BS, the 1N5354AE3/TR12 offers the highest surge robustness (5.8 A) and thermal capacity (5 W) in axial form, making it optimal for industrial power stages where reliability under transient stress is prioritized over tight tolerance or miniaturization.
Availability
1N5354AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and legacy equipment replacement requiring stable component supply and long-lifecycle support.
Supply support for 1N5354AE3/TR12 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 for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and JEDEC-standard interoperability across military and commercial applications.
FAQ
What is the Zener voltage tolerance of the 1N5354AE3/TR12?
The 1N5354AE3/TR12 has a ±10% Zener voltage tolerance, as indicated by the "A" suffix in its part number. This means its measured VZ at 70 mA test current falls within 15.3 V to 18.7 V at 25°C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging per EIA-296 standard. This tolerance is validated per JEDEC registration and applies across the full operating temperature range.
Can the 1N5354AE3/TR12 be used in surface-mount designs?
No - the 1N5354AE3/TR12 uses an axial-leaded T-18 package and is not compatible with SMT assembly. For surface-mount equivalents, Microsemi offers the SMBJ5354B (DO-214AB) and SMBG5354B (DO-214AA), both rated for 5 W and sharing identical 17 V ±10% VZ and electrical specs. The 1N5354AE3/TR12 requires through-hole mounting with ≥10 mm lead length for full 5 W dissipation.
What is the maximum surge current rating for the 1N5354AE3/TR12?
The 1N5354AE3/TR12 is rated for 5.8 A peak non-recurrent surge current (IZSM), defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating is confirmed in the manufacturer's Electrical Characteristics table and reflects the device's ability to absorb transient energy without parametric shift or failure - critical for input-stage clamping in industrial power inputs.
How does the thermal resistance of the 1N5354AE3/TR12 affect PCB layout?
The 1N5354AE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W when leads are trimmed to 10 mm from the body. To achieve full 5 W power dissipation, PCB layout must provide adequate copper area on both leads and avoid excessive trace length or narrow widths that increase thermal impedance. Mounting on FR4 with 4 mm² pads yields 85 °C/W junction-to-ambient - requiring derating to ~1.47 W at 25°C ambient.
Is the 1N5354AE3/TR12 suitable for automotive applications?
The 1N5354AE3/TR12 operates from -65°C to +150°C and meets MIL-STD-750 ESD testing, but it is not AEC-Q200 qualified. While used in some automotive subsystems (e.g., body control modules), its qualification is limited to industrial and military screening levels (JAN/JANTX available with prefix). For production automotive use, consult Microchip's AEC-Q200-certified Zener portfolio - the 1N5354AE3/TR12 serves best in non-safety-critical industrial replacements.
1N5354AE3/TR12 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/TR12 FAQ
1.How can I place an order for 1N5354AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354AE3/TR12 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/TR12 reliable?
The price and inventory of 1N5354AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5354AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354AE3/TR12?
1N5354AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354AE3/TR12 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/TR12?
For technical support, including 1N5354AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354AE3/TR12 requirements.
6.How does Aetrix verify that 1N5354AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5354AE3/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5354AE3/TR12?
All 1N5354AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354AE3/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N5354AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354AE3/TR12 Tags
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