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Microchip Technology 1N5354E3/TR13
- Part No.:
- 1N5354E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354E3/TR13.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
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Product details
Overview
1N5354E3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±5% tolerance (B-suffix equivalent), 70 mA test current, 2.5 Ω maximum dynamic impedance at IZT, and 5.8 A maximum Zener current when adequately heat sunk. It serves as a precision voltage reference or shunt regulator in power supply feedback loops, overvoltage protection circuits, and voltage-clamping applications.
For engineers reviewing the 1N5354E3/TR13 datasheet, 1N5354E3/TR13 pinout, 1N5354E3/TR13 application, or 1N5354E3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (5.8 A), reverse leakage behavior at VR = 12.2 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates 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 deviation over its specified operating current range (10–50% of IZM), and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with standard 3/8" lead length mounting.
The 1N5354E3/TR13 features a void-free thermosetting epoxy case rated UL94V-0, cathode band polarity marking, and moisture sensitivity level 1 per J-STD-020B-eliminating dry-pack requirements. It withstands 8.3 ms half-sine surge currents up to 5.8 A and exhibits ≤0.35 V voltage regulation (ΔVZ) between 10% and 50% of IZM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V nominal, ±5% tolerance - defines precise clamping/reference point for feedback or protection circuits |
| Test Current (IZT) | 70 mA - operating point at which VZ is specified; used to set bias in regulator designs |
| Dynamic Impedance (ZZ) | 2.5 Ω max at IZT - determines output voltage stability under load transients |
| Max Zener Current (IZM) | 5.8 A - peak continuous DC current sustainable with adequate heat sinking at TL = 25 °C |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables 5 W operation with minimal temperature rise using standard axial-lead mounting |
| Surge Current (IZSM) | 5.8 A (8.3 ms half-sine) - supports transient overvoltage suppression without failure |
| Voltage Regulation (ΔVZ) | 0.35 V max - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case (UL94V-0 epoxy), cathode indicated by colored band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt configuration | Connected to circuit ground or lower potential node when used as voltage clamp |
| Cathode | Zener breakdown terminal / high-side connection in shunt configuration | Banded end; connected to regulated rail or input node requiring voltage stabilization |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized mechanical dimensions, marking, and reliability testing across manufacturers |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating and lead-free assembly compatibility |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before PCB assembly-reduces handling cost and process risk |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events without parameter shift or failure-ideal for manual handling |
| High surge current capability | 5.8 A non-repetitive 8.3 ms half-sine rating enables robust transient voltage suppression |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 17 V reference to TL431 or similar error amplifier. Use Value: Tight ±5% tolerance and low ΔVZ (0.35 V) ensure <±1% output regulation accuracy across line/load/temperature. | Use Scenario: Placed across sensitive IC inputs to clamp transient spikes exceeding 17 V. IC Role / Device Role / Timing Role: Passive shunt clamp absorbing energy from ESD or inductive kickback events. Use Value: 5.8 A surge rating and 25 °C/W RθJL allow safe dissipation of 8.3 ms transients without thermal runaway. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Paired with precision resistors to generate stable 17 V excitation for analog sensor bridges. IC Role / Device Role / Timing Role: Primary voltage reference source in ratiometric measurement systems. Use Value: Low dynamic impedance (2.5 Ω) minimizes loading error on resistor dividers, preserving reference accuracy. | Use Scenario: Supplies regulated bias to pressure or temperature transducers in factory automation modules. IC Role / Device Role / Timing Role: Stable shunt regulator maintaining constant excitation despite 12–24 V input variation. Use Value: Operates reliably from −65 °C to +150 °C ambient, supporting extended industrial temperature range requirements. |
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, ±5%, 5 W rating but non-RoHS tin-lead plating; no e3 suffix | Not suitable for lead-free assembly; requires different reflow profile and post-solder cleaning | Select 1N5354B only if legacy tin-lead process is mandated and RoHS compliance is not required |
| MMSZ5246B-TP | Surface-mount SOD-123 package; 16 V nominal, ±5%, 500 mW - not power-equivalent | Cannot replace 1N5354E3/TR13 in 5 W applications; limited to low-power signal-level clamping | Choose MMSZ5246B-TP only for space-constrained PCBs where <1 W dissipation suffices |
Compared with 1N5354B and MMSZ5246B-TP, the 1N5354E3/TR13 uniquely combines RoHS compliance, 5 W power handling, axial-leaded through-hole mounting, and JEDEC-standardized T-18 packaging-making it the sole option for high-reliability, lead-free, medium-power shunt regulation in industrial power supplies and protection circuits.
Availability
1N5354E3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supply feedback, overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N5354E3/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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized 5 W axial Zener regulation in harsh-environment power systems-emphasizing thermal robustness, surge immunity, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of the 1N5354E3/TR13?
The 1N5354E3/TR13 has a nominal Zener voltage of 17 V with ±5% tolerance, as confirmed by the "B" designation implied by its electrical specification table entry and consistent with Microsemi's suffix coding (B = ±5%). This tolerance is verified in the Electrical Characteristics table on page 1 of the official datasheet, where 1N5354B is listed with VZ = 17 V and IZT = 70 mA.
Does the 1N5354E3/TR13 require dry packing before PCB assembly?
No, the 1N5354E3/TR13 does not require dry packing. Its moisture sensitivity level is rated IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking or dry-pack requirements-confirmed in the Features section of the datasheet.
What is the maximum steady-state power dissipation of the 1N5354E3/TR13 at 25°C?
The 1N5354E3/TR13 is rated for 5.0 watts steady-state power dissipation at 25 °C lead temperature (TL), as stated in the Maximum Ratings section. When mounted on an FR4 PCB with defined copper pads, its derated power drops to 1.47 W at 25 °C ambient (TA), per the thermal resistance specification of 85 °C/W junction-to-ambient.
How is polarity marked on the 1N5354E3/TR13?
The cathode of the 1N5354E3/TR13 is marked by a visible colored band on the body; the diode must be operated with this banded end held positive relative to the opposite (anode) end during reverse-bias regulation. This marking convention is explicitly defined in the Mechanical and Packaging section of the datasheet.
What is the surge current rating of the 1N5354E3/TR13?
The 1N5354E3/TR13 has a maximum non-repetitive surge current (IZSM) rating of 5.8 A for an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table. This value is derived from its 5 W power rating and 17 V Zener voltage, and is validated under standardized test conditions per Microsemi's published data.
1N5354E3/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):
- 17 V
- Tolerance:
- ±20%
- 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
1N5354E3/TR13 FAQ
1.How can I place an order for 1N5354E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354E3/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 1N5354E3/TR13 reliable?
The price and inventory of 1N5354E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354E3/TR13 is usually 5 days.
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Once your 1N5354E3/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 1N5354E3/TR13?
For technical support, including 1N5354E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354E3/TR13 requirements.
6.How does Aetrix verify that 1N5354E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5354E3/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 1N5354E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5354E3/TR13?
All 1N5354E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354E3/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 1N5354E3/TR13 part is unused and in its original packaging.
Return procedure for 1N5354E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354E3/TR13 Tags
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