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Microchip Technology 1N5354C/TR8
- Part No.:
- 1N5354C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354C/TR8.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,388
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Product details
Overview
1N5354C/TR8 from Microsemi is a silicon 5 W axial-leaded Zener diode with nominal regulation voltage of 17 V, ±2% tolerance (C suffix), 70 mA test current (IZT), 2.5 Ω maximum dynamic impedance (ZZ), and 5.8 V maximum voltage regulation (ΔVZ) across 10–50% of IZM. It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5354C/TR8 datasheet, 1N5354C/TR8 pinout, 1N5354C/TR8 application, or 1N5354C/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 A), reverse leakage at VR = 12.2 V (≤0.5 µA), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output voltage under varying load and line conditions. Its low dynamic impedance (2.5 Ω) and tight ±2% VZ tolerance ensure minimal voltage drift across operating current range (10–50% of IZM).
Designed for axial-lead through-hole mounting on FR4 PCBs, it delivers 5 W steady-state power at TL < 25 °C (3/8″ lead length), derating linearly above that temperature. Thermal resistance is specified as 25 °C/W junction-to-lead and 85 °C/W junction-to-ambient under defined PCB layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V ±2% - precise regulation point at 70 mA test current; enables accurate reference generation in feedback loops. |
| Power Dissipation | 5.0 W at TL < 25 °C - supports high-current regulation when adequately heat-sunk via leads. |
| Dynamic Impedance (ZZ) | 2.5 Ω max - ensures low AC voltage variation under changing load currents, critical for stable reference performance. |
| Max Reverse Leakage (IR) | ≤0.5 µA at VR = 12.2 V - guarantees minimal standby power loss and high impedance in off-state operation. |
| Voltage Regulation (ΔVZ) | 5.8 V max - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity across operating range. |
| Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - withstands transient overvoltage events without degradation. |
| Junction-to-Lead Rθ | 25 °C/W - enables thermal design using lead conduction; requires ≥10 mm lead length from body for rated power. |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (UL94V-0 epoxy), cathode indicated by 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-voltage side | Connected to circuit ground or lower potential node during Zener operation; carries full reverse current when cathode is biased positive. |
| Cathode | Zener regulation terminal / high-voltage side | Banded end; connected to unregulated input; establishes stable 17 V reference relative to anode when reverse-biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter closed-loop control in regulated power supplies without external trimming components. |
| Moisture sensitivity Level 1 | No dry pack required prior to assembly; simplifies handling and eliminates bake-out steps in manufacturing. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling protocols during board assembly and testing. |
| High surge current capability (75 A) | Provides inherent transient overvoltage clamping without requiring supplemental TVS devices in many applications. |
| RoHS compliant (e3 suffix) | Meets global environmental compliance requirements; tin-lead alternative available upon request. |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation circuits. IC Role / Device Role / Timing Role: Precision voltage reference element providing error signal to optocoupler-based feedback loop. Use Value: ±2% VZ tolerance and 2.5 Ω dynamic impedance minimize output voltage drift across line/load/temperature variations. |
Use Scenario: Clamping transient spikes on 24 V DC bus lines in factory automation controllers. IC Role / Device Role / Timing Role: Shunt protection device diverting surge energy to ground when bus exceeds 17 V. Use Value: 75 A surge rating and low ΔVZ ensure reliable clamping without thermal runaway during repetitive transients. |
| Programmable Logic Controller Input Conditioning | Test Equipment Voltage Calibration Standard |
Use Scenario: Level-shifting and voltage limiting for 24 V digital input modules accepting field signals. IC Role / Device Role / Timing Role: Input protection and threshold-setting element defining logic-high recognition level. Use Value: Low IR (≤0.5 µA) prevents loading of upstream sensors; axial package allows easy replacement in field-serviceable modules. |
Use Scenario: Stable reference source in benchtop multimeter calibration fixtures and automated test systems. IC Role / Device Role / Timing Role: Primary DC voltage standard traceable to NIST via calibrated measurement at 70 mA IZT. Use Value: Tight ±2% tolerance and minimal ΔVZ (5.8 V) support sub-0.1% absolute accuracy when operated within specified thermal conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B/TR8 | ±5% VZ tolerance (vs. ±2% for 1N5354C/TR8); otherwise identical electrical specs and package. | Acceptable where cost sensitivity outweighs precision requirement; higher VZ drift across temperature and current. | Select when budget constraints dominate and system-level calibration compensates for looser tolerance. |
| MMSZ5246ET1G | Surface-mount SOD-123 package (vs. axial T-18); 17 V ±5%, 20 mA IZT, 30 Ω ZZ - lower power (500 mW). | Used in space-constrained PCBs; unsuitable for 5 W continuous dissipation or high-surge environments. | Choose only for low-power, high-density designs where thermal management and surge immunity are not primary concerns. |
Compared with 1N5354B/TR8 and MMSZ5246ET1G, the 1N5354C/TR8 provides superior voltage stability and thermal robustness for industrial-grade 5 W regulation, making it optimal for applications demanding long-term reliability under wide ambient and load variations.
Availability
1N5354C/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controller input conditioning, and test equipment voltage calibration requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for 1N5354C/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized, high-stability voltage regulation in harsh-environment power systems where long-term parametric consistency and surge resilience are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5354C/TR8?
The 1N5354C/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix per Microsemi's documentation. This means its nominal 17 V regulation voltage falls within 16.66 V to 17.34 V at 70 mA test current and 25 °C lead temperature. This tight tolerance supports precision feedback and reference applications without external trimming.
Can the 1N5354C/TR8 be used in surface-mount designs?
No - the 1N5354C/TR8 uses an axial-leaded T-18 package intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMBJ5354B series, while third-party alternatives like MMSZ5246ET1G exist but differ significantly in power rating (500 mW vs. 5 W), tolerance (±5%), and dynamic impedance (30 Ω vs. 2.5 Ω).
What is the maximum surge current rating for the 1N5354C/TR8?
The 1N5354C/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 75 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient overvoltage events without failure, making it suitable for clamping in industrial power rails subject to switching surges or lightning-induced spikes.
How does thermal resistance affect the 1N5354C/TR8's power handling?
The 1N5354C/TR8 has a junction-to-lead thermal resistance of 25 °C/W. To sustain 5 W dissipation, the lead temperature (TL) must remain below 25 °C - typically achieved with ≥10 mm lead length from the body and adequate copper pour. On FR4 with standard pads, junction-to-ambient resistance rises to 85 °C/W, limiting usable power to ~1.47 W at 25 °C ambient.
Is the 1N5354C/TR8 RoHS compliant?
Yes - the "e3" designation in Microsemi's official documentation confirms RoHS compliance for the 1N5354C/TR8. Its leads feature annealed matte-tin plating per MIL-STD-750 Method 2026, and the void-free epoxy body meets UL94V-0 flammability standards, satisfying EU Directive 2011/65/EU requirements.
1N5354C/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:
- ±2%
- 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
1N5354C/TR8 FAQ
1.How can I place an order for 1N5354C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354C/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 1N5354C/TR8 reliable?
The price and inventory of 1N5354C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5354C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354C/TR8?
1N5354C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354C/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 1N5354C/TR8?
For technical support, including 1N5354C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354C/TR8 requirements.
6.How does Aetrix verify that 1N5354C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5354C/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 1N5354C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5354C/TR8?
All 1N5354C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354C/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 1N5354C/TR8 part is unused and in its original packaging.
Return procedure for 1N5354C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354C/TR8 Tags
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