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Microchip Technology 1N5341/TR8
- Part No.:
- 1N5341/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5341/TR8.pdf
- Description:
- DIODE ZENER 6.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,646
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Product details
Overview
1N5341/TR8 from Microsemi is a 5.1 V, ±5% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It delivers stable regulation at 240 mA test current with 1.5 Ω dynamic impedance and supports operation from –65°C to +150°C.
For engineers reviewing the 1N5341/TR8 datasheet, 1N5341/TR8 pinout, 1N5341/TR8 application, or 1N5341/TR8 equivalent, this page provides verified electrical parameters, thermal derating behavior, JEDEC T-18 package details, and validated alternatives for industrial power management designs.
Technical Context
This Zener operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode. Its regulation performance is specified at 25°C lead temperature (TL), with voltage measured 40±10 ms after DC current application.
Thermal resistance is 25°C/W junction-to-lead at 3/8″ (10 mm) lead length, enabling 5 W steady-state dissipation when adequately heat-sunk; on FR4 PCB with 4 mm² copper pads, derated power drops to 1.47 W at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V ±5% - precise reference voltage for feedback networks in 5 V SMPS designs |
| Test Current (IZT) | 240 mA - operating point where VZ and dynamic impedance are guaranteed |
| Dynamic Impedance (ZZ) | 1.5 Ω - low AC resistance ensures minimal output voltage variation under load transients |
| Max Regulator Current (IZM) | 930 mA - maximum continuous DC current at rated power with proper heatsinking |
| Reverse Current (IR) | 1.0 µA @ 3.9 V - leakage remains negligible below knee voltage, supporting low-power standby modes |
| Surge Current (IZSM) | 14.4 A - withstands non-repetitive 8.3 ms half-sine surges, e.g., from line transients or ESD events |
| Voltage Regulation (ΔVZ) | 0.39 V - difference between VZ at 10% and 50% of IZM, indicating tight regulation across operating range |
Pinout & Package
JEDEC T-18 axial-leaded plastic package with void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by band. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink in reverse bias | Connected to circuit ground or lower-potential node during regulation |
| Cathode (banded end) | Regulated voltage output | Provides stable 5.1 V reference when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered T-18 package | Industry-standard axial footprint compatible with manual and wave soldering, no dry pack required (Moisture Sensitivity Level 1) |
| 5 W power rating with 25°C/W θJL | Enables high-current regulation without external heatsink when leads serve as thermal path |
| ±5% voltage tolerance (B suffix) | Meets precision requirements for closed-loop DC-DC converter feedback without trimming |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions in assembly environments |
| RoHS-compliant option (e3 suffix) | Supports environmental compliance for industrial and telecom equipment without performance trade-off |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Provides precise 5.1 V reference to TL431 shunt regulator or directly biases optocoupler LED. Use Value: Maintains ±1% output accuracy across line/load/temperature with minimal parts count. | Use Scenario: Protecting microcontroller I/O pins from transient overvoltage on 5 V rails. IC Role / Device Role / Timing Role: Clamps voltage to 5.1 V before it exceeds absolute maximum ratings of downstream logic. Use Value: Absorbs 14.4 A surge (8.3 ms) without failure, preventing latch-up or gate oxide damage. |
| Programmable Reference Source | Industrial Sensor Excitation |
Use Scenario: Generating stable excitation voltage for resistive bridge sensors in process control transmitters. IC Role / Device Role / Timing Role: Supplies regulated 5.1 V to Wheatstone bridge, minimizing drift-induced measurement error. Use Value: ΔVZ = 0.39 V ensures <0.1% full-scale error contribution over 10–50% IZM range. | Use Scenario: Biasing analog front-end circuits in 4–20 mA loop-powered field instruments. IC Role / Device Role / Timing Role: Stabilizes local 5 V rail for op-amps and ADCs operating from limited loop power. Use Value: Low 1.5 Ω ZZ prevents gain error under varying sensor signal loading conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5341B | No TR8 tape-and-reel packaging; bulk or ammo pack only | Same electrical specs, but unsuitable for automated pick-and-place assembly | Select 1N5341/TR8 for SMT production lines requiring reel-fed feeders |
| MMBZ5231B | Surface-mount SOT-23 package, 500 mW rating, 5.1 V ±5% | Lower power handling and different thermal profile; not drop-in for 5 W thermal paths | Choose MMBZ5231B only for space-constrained, low-power signal-level references |
Compared with 1N5341B and MMBZ5231B, the 1N5341/TR8 uniquely combines JEDEC T-18 mechanical robustness, 5 W thermal capability, and tape-and-reel automation support-making it optimal for industrial power supply manufacturing where reliability and throughput both matter.
Availability
1N5341/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable reference sources requiring stable component supply and long-term obsolescence management.
Supply support for 1N5341/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 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and JEDEC-standardized manufacturability.
FAQ
What is the Zener voltage tolerance for 1N5341/TR8?
The 1N5341/TR8 has a ±5% Zener voltage tolerance, confirmed by the "B" suffix in its part number per Microsemi's datasheet. This means its nominal 5.1 V regulation falls within 4.845 V to 5.355 V at 240 mA test current and 25°C lead temperature. The tolerance is guaranteed across the full operating temperature range of –65°C to +150°C, making 1N5341/TR8 suitable for untrimmed feedback applications in industrial power supplies.
Can 1N5341/TR8 be used in surface-mount designs?
No, the 1N5341/TR8 uses a through-hole JEDEC T-18 axial-leaded package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5341B (DO-214AA) and SMBG5341B (DO-214AB), both rated at 5 W but requiring different PCB footprints and reflow profiles. The 1N5341/TR8 must be mounted axially with 10 mm lead length from body to achieve its rated 5 W dissipation and 25°C/W thermal resistance.
What is the maximum surge current rating for 1N5341/TR8?
The 1N5341/TR8 has a maximum non-repetitive surge current (IZSM) of 14.4 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating enables the device to absorb common power-line transients and ESD events without degradation. The surge capability is validated per JEDEC standards and is independent of steady-state power rating-meaning 1N5341/TR8 can handle short-duration overloads while maintaining regulation integrity during normal operation.
How does thermal derating affect 1N5341/TR8 power dissipation?
When mounted on FR4 PCB with 4 mm² copper pads, the 1N5341/TR8 is derated to 1.47 W at 25°C ambient; its power rating decreases linearly above that temperature at 11.8 mW/°C. In contrast, with 3/8″ (10 mm) lead length from body and adequate heatsinking, it maintains full 5 W up to 25°C lead temperature, then derates at 200 mW/°C. Engineers must select mounting method based on system thermal constraints-1N5341/TR8's dual derating curves allow flexible implementation in either chassis-mounted or PCB-integrated designs.
Is 1N5341/TR8 RoHS compliant?
Yes, the 1N5341/TR8 is RoHS compliant, indicated by the "e3" suffix in Microsemi's full part numbering convention (e.g., 1N5341B e3). The device uses annealed matte-tin plating on leads and UL94V-0 epoxy encapsulation, meeting EU Directive 2011/65/EU requirements. No exemptions apply, and the material declaration confirms absence of lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE above threshold limits-making 1N5341/TR8 suitable for global industrial and telecom deployments.
1N5341/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):
- 6.2 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 3 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
1N5341/TR8 FAQ
1.How can I place an order for 1N5341/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5341/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 1N5341/TR8 reliable?
The price and inventory of 1N5341/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5341/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5341/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5341/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5341/TR8?
1N5341/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5341/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 1N5341/TR8?
For technical support, including 1N5341/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5341/TR8 requirements.
6.How does Aetrix verify that 1N5341/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5341/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 1N5341/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5341/TR8?
All 1N5341/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5341/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 1N5341/TR8 part is unused and in its original packaging.
Return procedure for 1N5341/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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