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Microchip Technology 1N5354BE3/TR8
- Part No.:
- 1N5354BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354BE3/TR8.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,299
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Product details
Overview
1N5354BE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±5% tolerance (B suffix), 70 mA test current (IZT), 2.5 Ω maximum dynamic impedance (ZZ), and 5.8 A maximum Zener current (IZM) when adequately heat-sunk. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature ranges.
For engineers reviewing the 1N5354BE3/TR8 datasheet, 1N5354BE3/TR8 pinout, 1N5354BE3/TR8 application, or 1N5354BE3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (5.8 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a voltage reference by maintaining stable reverse-bias conduction at its specified Zener voltage (17 V) over a wide current range (10–50% of IZM). Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation under load changes, and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with 3/8″ lead length heat sinking.
The 1N5354BE3/TR8 features cathode band polarity marking, UL94V-0 void-free epoxy encapsulation, and moisture sensitivity level 1-no dry pack required. It withstands 8.3 ms non-repetitive 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 ±5% - precise DC reference for feedback loops and clamp thresholds |
| Test Current (IZT) | 70 mA - operating point where VZ and dynamic impedance are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC resistance ensures stable regulation under varying load current |
| Max Zener Current (IZM) | 5.8 A - peak continuous reverse current sustainable with proper heat sinking |
| Power Dissipation | 5.0 W at TL = 25 °C - requires 3/8″ (10 mm) lead length for full rating |
| Voltage Regulation (ΔVZ) | 0.35 V max - difference between VZ measured at 10% and 50% of IZM |
| Thermal Resistance | 25 °C/W junction-to-lead - enables high-power operation with simple lead-based heatsinking |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), void-free UL94V-0 epoxy body, cathode indicated by color band, RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential rail; forward voltage ≤1.2 V @ 1.0 A |
| Cathode | Zener regulation terminal / Voltage reference output | Banded end; operated positive relative to anode; delivers stable 17 V reverse breakdown |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Standardized mechanical and electrical definition ensures cross-manufacturer compatibility and procurement reliability |
| ±5% voltage tolerance (B suffix) | Enables accurate voltage setting without trimming in mid-precision reference applications |
| RoHS-compliant e3 suffix | Meets global environmental compliance requirements with annealed matte-tin plating |
| Moisture Sensitivity Level 1 | No dry pack or baking required before PCB assembly-reduces manufacturing overhead |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly and testing |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback networks using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Primary DC voltage reference establishing precise output setpoint via TL431-compatible bias network. Use Value: 17 V Zener voltage provides margin above typical 12 V or 15 V rails while enabling stable regulation with 2.5 Ω dynamic impedance. | Use Scenario: Clamps transient overvoltages on DC bus lines in motor drives or industrial PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protection element diverting surge energy to ground when bus voltage exceeds safe threshold. Use Value: 5.8 A IZM and 5.8 A IZSM (8.3 ms half-sine) support robust clamping without thermal runaway under repeated surges. |
| Industrial Sensor Excitation | Reference Voltage Generator |
Use Scenario: Supplies stable excitation voltage to resistive bridge sensors (e.g., strain gauges, RTDs) in harsh-environment instrumentation. IC Role / Device Role / Timing Role: Passive voltage reference source replacing active regulators where low noise and simplicity are prioritized. Use Value: ΔVZ ≤0.35 V ensures <2.1% voltage drift across operating current range-critical for 12-bit+ measurement accuracy. | Use Scenario: Generates fixed bias voltage for analog comparators, ADC references, or op-amp level-shifting circuits in embedded controllers. IC Role / Device Role / Timing Role: Precision shunt reference providing known potential independent of supply rail fluctuations. Use Value: 17 V output supports high-side sensing topologies and offers headroom for downstream LDOs or regulators requiring ≥12 V input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354BRLG | Same 17 V ±5%, 5 W rating, but in bulk packaging (no tape/reel); identical electrical specs and T-18 package | No TR8 tape-and-reel format-suitable for manual or low-volume SMT rework, not automated pick-and-place | Select 1N5354BRLG only when reel packaging is unnecessary and cost-per-unit is prioritized over assembly automation compatibility |
| MMBZ5242B-TP | Surface-mount SOT-23 package, 17 V ±5%, but rated for only 0.25 W-lower power, higher thermal resistance (350 °C/W) | Not suitable for 5 W dissipation; limited to low-current bias/reference roles in space-constrained PCBs | Choose MMBZ5242B-TP only for ultra-compact designs where power <250 mW and thermal budget permits surface-mount limitations |
Compared with 1N5354BRLG and MMBZ5242B-TP, the 1N5354BE3/TR8 uniquely combines axial-leaded mechanical robustness, 5 W power handling, JEDEC-standardized form factor, and tape-and-reel readiness-making it optimal for high-reliability industrial power and protection circuits requiring automated assembly.
Availability
1N5354BE3/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and industrial sensor excitation systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5354BE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed as a JEDEC-standardized, high-power axial Zener platform for ruggedized voltage regulation in mission-critical power conversion and protection applications-emphasizing thermal performance, surge resilience, and long-term stability.
FAQ
What is the Zener voltage tolerance of the 1N5354BE3/TR8?
The 1N5354BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its actual regulation voltage falls within 16.15 V to 17.85 V at 70 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR8 denotes tape-and-reel packaging per EIA-296 standard. This tolerance enables predictable performance in feedback and clamp circuits without calibration.
Can the 1N5354BE3/TR8 be used without a heatsink?
The 1N5354BE3/TR8 can operate at up to 1.47 W continuously without a heatsink when mounted on a standard FR4 PCB with 4 mm² copper pads and 1 mm trace width, due to its 85 °C/W junction-to-ambient thermal resistance. For full 5 W dissipation, a 3/8″ (10 mm) lead length must be maintained from the body to achieve the rated 25 °C/W junction-to-lead resistance-effectively using the leads as a heatsink. Derating curves in the datasheet define safe operating limits at elevated temperatures.
What does the "TR8" suffix mean in 1N5354BE3/TR8?
The "TR8" suffix in 1N5354BE3/TR8 indicates tape-and-reel packaging per EIA-296 standard, with 8 mm carrier tape width and component orientation optimized for automated pick-and-place equipment. The "e3" denotes RoHS-compliant matte-tin plating, and "B" specifies ±5% Zener voltage tolerance. Together, these suffixes define the complete commercial-grade, assembly-ready variant of the base 1N5354B device.
How does the 1N5354BE3/TR8 handle surge conditions?
The 1N5354BE3/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 5.8 A, defined as the peak of an 8.3 ms half-sine waveform. This capability allows it to absorb transient overvoltages in industrial environments without failure. Its low dynamic impedance (2.5 Ω) and tight voltage regulation (ΔVZ ≤0.35 V) ensure consistent clamping behavior across surge events, supporting reliable protection in motor drive DC links and power supply inputs.
Is the 1N5354BE3/TR8 suitable for automotive applications?
The 1N5354BE3/TR8 operates across –65 °C to +150 °C and meets MIL-PRF-19500 screening levels when ordered with MQ/MX/MV prefixes-but the standard 1N5354BE3/TR8 is not AEC-Q200 qualified. It is widely used in industrial and telecom power systems where extended temperature and surge resilience are required. For automotive-grade deployment, users must specify screened versions (e.g., JANTXV-1N5354B) and validate against vehicle-level EMC and lifetime requirements.
1N5354BE3/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:
- ±5%
- 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
1N5354BE3/TR8 FAQ
1.How can I place an order for 1N5354BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354BE3/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 1N5354BE3/TR8 reliable?
The price and inventory of 1N5354BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5354BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354BE3/TR8?
1N5354BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354BE3/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 1N5354BE3/TR8?
For technical support, including 1N5354BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354BE3/TR8 requirements.
6.How does Aetrix verify that 1N5354BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5354BE3/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 1N5354BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5354BE3/TR8?
All 1N5354BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354BE3/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 1N5354BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5354BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354BE3/TR8 Tags
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