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Microchip Technology 1N5340E3/TR8
- Part No.:
- 1N5340E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340E3/TR8.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,940
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Product details
Overview
1N5340E3/TR8 from Microsemi is a 6.0 V, ±5% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply and reference circuits. It delivers 200 mA maximum Zener current (IZM) at 25°C with 1.0 Ω dynamic impedance (ZZ) and operates across –65°C to +150°C.
For engineers reviewing the 1N5340E3/TR8 datasheet, 1N5340E3/TR8 pinout, 1N5340E3/TR8 application, or 1N5340E3/TR8 equivalent, key selection factors include its 6.0 V nominal Zener voltage, 5 W steady-state power rating at lead temperature <25°C, low 1.0 Ω impedance at 200 mA test current, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown. Its regulation performance is defined by specified Zener voltage (VZ = 6.0 V), dynamic impedance (ZZ = 1.0 Ω), and voltage regulation (ΔVZ = 0.19 V) measured between 10% and 50% of IZM.
It features a T-18 axial package with cathode band marking, moisture sensitivity level 1 per J-STD-020B, and thermal resistance of 25°C/W junction-to-lead (3/8" lead length). Forward voltage is ≤1.2 V at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±5% - precise DC reference point for feedback loops and clamping |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C - supports high-current regulation with adequate heatsinking |
| Test Current (IZT) | 200 mA - standardized operating point for VZ and ZZ measurement |
| Dynamic Impedance (ZZ) | 1.0 Ω at IZT - low AC resistance ensures stable regulation under varying load |
| Max Regulator Current (IZM) | 790 mA - maximum continuous reverse current before thermal failure |
| Reverse Leakage (IR) | 1.0 μA at VR = 3.0 V - minimal off-state power loss in standby operation |
| Voltage Regulation (ΔVZ) | 0.19 V - variation between 10% and 50% of IZM defines regulation tightness |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-41 outline; void-free UL94V-0 epoxy body; cathode indicated by color band; leads plated with RoHS-compliant matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; held at stable 6.0 V above anode when reverse current ≥ IZT |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard DO-41 mechanical and electrical definitions |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - robust against electrostatic discharge during handling |
| High surge current capability | 12.7 A peak non-recurrent half-sine (8.3 ms) - withstands transient overvoltage events |
| RoHS-compliant construction | e3 suffix indicates lead-free matte-tin plating meeting EU Directive 2011/65/EU |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference element setting error amplifier threshold. Use Value: 6.0 V ±5% tolerance and 1.0 Ω dynamic impedance ensure <±1% output regulation accuracy under line/load transients. | Use Scenario: Placed across sensitive IC inputs to clamp induced surges from relay switching or ESD events. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground. Use Value: 12.7 A surge current rating and 0.19 V voltage regulation enable reliable clamping without degradation after repeated transients. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Paired with precision resistors to generate stable bias voltages for op-amp circuits or ADC references. IC Role / Device Role / Timing Role: Primary voltage reference source in analog signal conditioning stages. Use Value: Low 1.0 μA leakage at 3.0 V and –65°C to +150°C operating range support long-term stability in unregulated environments. | Use Scenario: Supplies excitation voltage to 4–20 mA current-loop sensors in factory automation systems. IC Role / Device Role / Timing Role: Stable excitation source maintaining sensor linearity and calibration integrity. Use Value: 5 W power rating and 25°C/W junction-to-lead thermal resistance allow continuous operation at full load without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B | Same 6.0 V ±5%, but leaded SnPb plating instead of RoHS-compliant matte tin | Not suitable for RoHS-restricted production; otherwise identical electrical behavior | Select 1N5340B only for legacy SnPb assembly or non-RoHS environments |
| MMSZ5234B-TP | Surface-mount SOD-123 package; 6.2 V ±5%; 500 mW rating; 10 Ω impedance at 20 mA | Limited to low-power, space-constrained PCBs; not interchangeable due to power and thermal differences | Choose MMSZ5234B-TP only for compact designs where 5 W dissipation is unnecessary |
Compared with 1N5340B and MMSZ5234B-TP, the 1N5340E3/TR8 provides RoHS compliance, 5 W power handling, and axial-leaded mounting flexibility-making it optimal for industrial power supplies requiring field-replaceable through-hole components.
Availability
1N5340E3/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, programmable voltage references, and industrial sensor excitation requiring stable component supply and long-lifecycle support.
Supply support for 1N5340E3/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 specifically for ruggedized, high-power voltage regulation in harsh-environment power conversion and protection systems where reliability and thermal robustness are critical.
FAQ
What is the Zener voltage tolerance of the 1N5340E3/TR8?
The 1N5340E3/TR8 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix in its base part number 1N5340B. The "E3" denotes RoHS-compliant plating, and "TR8" specifies tape-and-reel packaging per EIA-296. This tolerance ensures the actual VZ remains within 5.7 V to 6.3 V at 200 mA test current and 25°C lead temperature.
Can the 1N5340E3/TR8 be used in surface-mount designs?
No, the 1N5340E3/TR8 uses a T-18 axial-leaded package and is not a surface-mount device. For SMT equivalents, Microsemi offers the SMBJ5340B (DO-214AA) and SMBG5340B (DO-214AB), which share the same 6.0 V ±5% electrical characteristics but require different PCB layout and reflow profiles compared to the 1N5340E3/TR8.
What is the maximum surge current rating for the 1N5340E3/TR8?
The 1N5340E3/TR8 has a maximum non-recurrent surge current (IZSM) of 12.7 A, specified as the peak value of an 8.3 ms half-sine waveform. This rating enables the device to absorb transient overvoltage events-such as inductive kickback or ESD-without permanent degradation, provided the surge occurs infrequently and within thermal limits.
How does the thermal resistance of the 1N5340E3/TR8 affect its power handling?
The 1N5340E3/TR8 has a junction-to-lead thermal resistance of 25°C/W at 3/8" (10 mm) lead length. This means each watt dissipated raises the junction temperature 25°C above lead temperature. At 25°C ambient and no heatsink, its usable power drops to ~1.47 W on FR4; full 5 W operation requires maintaining lead temperature below 25°C via heatsinking or forced convection.
Is the 1N5340E3/TR8 suitable for automotive applications?
The 1N5340E3/TR8 operates from –65°C to +150°C and meets MIL-PRF-19500 screening levels when ordered with MQ/MX/MV prefixes (e.g., MX1N5340B). As shipped, the 1N5340E3/TR8 is not AEC-Q200 qualified, but its wide temperature range, ESD robustness, and surge capability make it suitable for under-hood industrial or commercial automotive subsystems where full qualification is not mandated.
1N5340E3/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:
- ±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
1N5340E3/TR8 FAQ
1.How can I place an order for 1N5340E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340E3/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 1N5340E3/TR8 reliable?
The price and inventory of 1N5340E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5340E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340E3/TR8?
1N5340E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340E3/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 1N5340E3/TR8?
For technical support, including 1N5340E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340E3/TR8 requirements.
6.How does Aetrix verify that 1N5340E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5340E3/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 1N5340E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5340E3/TR8?
All 1N5340E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340E3/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 1N5340E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5340E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340E3/TR8 Tags
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MM5Z5V1ST1G
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