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Microchip Technology 1N5340A/TR8
- Part No.:
- 1N5340A/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340A/TR8.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,940
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Product details
Overview
1N5340A/TR8 from Microsemi is a silicon 5 W axial-leaded Zener diode with nominal regulation voltage of 6.0 V, ±10% tolerance (A suffix), 200 mA test current (IZT), 1.0 Ω maximum dynamic impedance (ZZ), and 790 mA maximum Zener current (IZM) at TL = 25°C. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N5340A/TR8 datasheet, 1N5340A/TR8 pinout, 1N5340A/TR8 application, or 1N5340A/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (12.7 A), reverse leakage (1.0 µA @ 3.0 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a voltage reference by maintaining stable reverse-bias breakdown at 6.0 V under regulated DC current up to 790 mA when adequately heat-sunk. Its low 1.0 Ω dynamic impedance ensures minimal voltage variation across 10–50% IZM, and its 25 °C/W junction-to-lead thermal resistance enables high-power operation with standard lead-length mounting.
The 1N5340A/TR8 features a void-free thermosetting epoxy T-18 package rated for -65°C to +150°C operation, moisture sensitivity Level 1 (no dry pack required), and cathode polarity indicated by a band. It withstands 8.3 ms half-sine surge currents up to 12.7 A and exhibits <0.19 V voltage regulation (ΔVZ) between 10% and 50% IZM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±10% - precise regulation point for 5 V system references and clamp thresholds |
| Test Current (IZT) | 200 mA - operating point where VZ and ZZ are specified; defines minimum stable bias current |
| Dynamic Impedance (ZZ) | 1.0 Ω max - low AC impedance ensures tight voltage stability under varying load current |
| Max Zener Current (IZM) | 790 mA - maximum continuous DC current at TL = 25°C with 3/8" lead length heat sinking |
| Reverse Leakage (IR) | 1.0 µA max @ 3.0 V - negligible standby current in undervoltage detection or bias networks |
| Surge Current (IZSM) | 12.7 A - peak non-repetitive 8.3 ms half-sine capability for transient overvoltage clamping |
| Voltage Regulation (ΔVZ) | 0.19 V max - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case with cathode band marking; void-free UL94V-0 epoxy body; 0.7 g weight; leads plated with RoHS-compliant annealed matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common or lower-potential rail; forward voltage ≤1.2 V @ 1.0 A |
| Cathode | Zener breakdown terminal / Regulated output node | Banded end; operated positive w.r.t. anode; delivers stable 6.0 V under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Industry-standard 1N53xx designation ensures cross-manufacturer compatibility and design continuity |
| ±10% voltage tolerance (A suffix) | Cost-optimized tolerance for non-critical reference and clamping applications without precision trimming |
| 5.0 W steady-state power at TL < 25°C | Enables high-current shunt regulation without external heatsink when mounted with 10 mm lead length |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions during assembly; suitable for high-volume manufacturing |
| Moisture sensitivity Level 1 | No dry-pack requirement or bake-out prior to reflow; simplifies SMT-compatible tape-and-reel (TR8) logistics |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifier loop. IC Role / Device Role / Timing Role: Provides fixed 6.0 V reference against which output voltage is compared. Use Value: Maintains ±10% regulation accuracy across 200 mA to 790 mA bias current, enabling stable loop control without trimming. |
Use Scenario: Protecting downstream ICs from transient voltage spikes on 5 V or 12 V rails. IC Role / Device Role / Timing Role: Shunts excess energy to ground when rail exceeds 6.0 V + tolerance. Use Value: Withstands 12.7 A surge (8.3 ms) and limits clamping voltage to ≤6.19 V (6.0 V + ΔVZ), preventing latch-up. |
| Industrial Sensor Bias Network | Programmable Logic Controller Input Protection |
Use Scenario: Supplying stable excitation voltage to resistive bridge sensors in harsh environments. IC Role / Device Role / Timing Role: Acts as low-drift, temperature-stable voltage source for Wheatstone bridge arms. Use Value: Delivers 6.0 V ±10% from -65°C to +150°C with <0.19 V regulation shift, ensuring sensor linearity. |
Use Scenario: Limiting input voltage to PLC digital input modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end protection element absorbing induced surges before signal conditioning stage. Use Value: Low 1.0 Ω dynamic impedance minimizes voltage overshoot during fast transients, preserving input integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B/TR8 | ±5% tolerance (B suffix) vs. ±10% (A); identical VZ, IZT, ZZ, IZM, and package | Higher precision required in feedback loops where tighter regulation reduces output error | Select 1N5340B/TR8 when system accuracy demands <±0.3 V deviation at 6.0 V nominal |
| MMBZ5234B-TP | Surface-mount SOD-123 package; 500 mW rating; 6.2 V nominal; ±5%; 20 mA IZT | Low-power, space-constrained PCBs where 5 W dissipation and axial leads are impractical | Choose MMBZ5234B-TP only for <100 mA applications with board area constraints; not a power replacement |
Compared with 1N5340B/TR8, the 1N5340A/TR8 trades voltage precision for cost and robustness in high-current clamping; versus MMBZ5234B-TP, it provides 15.8× higher power handling and axial-mount flexibility but requires more board space and thermal management.
Availability
1N5340A/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and programmable logic controller input protection requiring stable component supply and long-term obsolescence management.
Supply support for 1N5340A/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 1N53xx series was designed for ruggedized voltage regulation in mission-critical power systems, emphasizing thermal performance, surge resilience, and extended temperature operation without derating.
FAQ
What is the Zener voltage tolerance of the 1N5340A/TR8?
The 1N5340A/TR8 has a nominal Zener voltage of 6.0 V with ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ falls between 5.4 V and 6.6 V at 200 mA test current and 25°C lead temperature. The tolerance is confirmed in the Electrical Characteristics table on page 1 of the official datasheet.
Can the 1N5340A/TR8 be used in surface-mount designs?
No - the 1N5340A/TR8 is an axial-leaded T-18 package and is not compatible with SMT reflow processes. While it ships in tape-and-reel (TR8) format for automated placement, its leads require through-hole mounting. For surface-mount alternatives, consider the SMBJ5340B or MMBZ5234B-TP, which differ in power rating, tolerance, and package.
What is the maximum surge current rating for the 1N5340A/TR8?
The 1N5340A/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 12.7 A, defined as the peak of an 8.3 ms half-sine waveform. This value is specified in the Electrical Characteristics table and reflects its capability to absorb transient overvoltage events without failure when properly mounted.
How does the thermal resistance affect the 1N5340A/TR8's power handling?
The 1N5340A/TR8 has a junction-to-lead thermal resistance of 25 °C/W at 3/8" (10 mm) lead length. This allows full 5.0 W dissipation at TL < 25°C. On FR4 PCB with 1 oz copper, junction-to-ambient resistance rises to 85 °C/W, limiting steady-state power to 1.47 W at TA = 25°C - a critical derating factor for board-level thermal design.
Is the 1N5340A/TR8 RoHS compliant?
Yes - the 1N5340A/TR8 is RoHS compliant, as confirmed by the "e3" suffix in Microsemi's part numbering and documentation. Its leads use RoHS-compliant annealed matte-tin plating per MIL-STD-750 Method 2026, and the epoxy body meets UL94V-0 flammability standards.
1N5340A/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 V
- Tolerance:
- ±10%
- 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
1N5340A/TR8 FAQ
1.How can I place an order for 1N5340A/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340A/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 1N5340A/TR8 reliable?
The price and inventory of 1N5340A/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340A/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5340A/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340A/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340A/TR8?
1N5340A/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340A/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 1N5340A/TR8?
For technical support, including 1N5340A/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340A/TR8 requirements.
6.How does Aetrix verify that 1N5340A/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5340A/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 1N5340A/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5340A/TR8?
All 1N5340A/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340A/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 1N5340A/TR8 part is unused and in its original packaging.
Return procedure for 1N5340A/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340A/TR8 Tags
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