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Microchip Technology 1N5340BE3/TR8
- Part No.:
- 1N5340BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340BE3/TR8.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,178
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Product details
Overview
1N5340BE3/TR8 from Microsemi is a 6.0 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 200 mA test current with 1.0 Ω dynamic impedance and operates across –65°C to +150°C.
For engineers reviewing the 1N5340BE3/TR8 datasheet, 1N5340BE3/TR8 pinout, 1N5340BE3/TR8 application, or 1N5340BE3/TR8 equivalent, key selection criteria include its 6.0 V nominal Zener voltage, 5 W steady-state power rating at TL < 25°C, low 1.0 Ω Zener impedance (ZZ), and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown. Its regulation performance is defined by measured VZ at IZT = 200 mA, dynamic impedance ZZ = 1.0 Ω at 1 kHz, and voltage regulation ΔVZ = 0.19 V between 10% and 50% of IZM.
Thermal design relies on junction-to-lead thermal resistance of 25°C/W at 10 mm lead length, enabling 5 W dissipation with adequate heatsinking. Reverse leakage is limited to ≤1.0 µA at VR = 3.0 V, and 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% at IZT = 200 mA - defines precise regulation setpoint for feedback or clamping |
| Power Dissipation (PD) | 5.0 W at TL < 25°C - supports high-current regulation without forced cooling when leads are heat-sunk |
| Dynamic Impedance (ZZ) | 1.0 Ω at 1 kHz - ensures minimal output voltage variation under load transients |
| Max Reverse Current (IR) | ≤1.0 µA at VR = 3.0 V - guarantees low standby leakage in precision bias networks |
| Thermal Resistance (RθJL) | 25°C/W junction-to-lead - enables direct thermal path to PCB copper or chassis via 10 mm leads |
| Operating Temperature | –65°C to +150°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free 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 | Reverse-biased reference terminal | Connected to lower-potential node; forms regulated reference when cathode is biased positive |
| Cathode | Reverse-biased reference terminal | Banded end; connected to higher-potential node; establishes 6.0 V drop relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions and electrical behavior across global supply chain |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT reflow compatibility |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations |
| High surge current rating (IZSM = 12.7 A) | Withstands 8.3 ms half-sine surges common in automotive load-dump and inductive switching events |
| e3 RoHS-compliant plating | Meets EU RoHS Directive 2011/65/EU and China RoHS without lead content or exemptions |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Provides stable 6.0 V reference for TL431 or similar shunt regulator IC input threshold. Use Value: Enables ±5% output regulation accuracy over line, load, and temperature with minimal component count. |
Use Scenario: Clamps transient voltage spikes on 5 V or 12 V rail caused by relay coil de-energization or motor commutation. IC Role / Device Role / Timing Role: Acts as two-terminal crowbar element absorbing surge energy before downstream ICs exceed absolute maximum ratings. Use Value: Limits peak voltage to ≤6.3 V (6.0 V + 5%) during 12.7 A surge, protecting logic-level MOSFETs and microcontrollers. |
| Precision Reference Generator | Industrial Sensor Biasing |
Use Scenario: Supplies stable excitation voltage to resistive bridge sensors (e.g., strain gauges) in weigh-scale or pressure transducers. IC Role / Device Role / Timing Role: Functions as low-drift, low-noise DC reference source independent of supply rail fluctuations. Use Value: Delivers 6.0 V ±0.3 V over –40°C to +85°C, reducing sensor offset drift by >40% versus unregulated bias. |
Use Scenario: Biases analog front-end circuitry (e.g., op-amp input stage) in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Maintains fixed reference potential for signal conditioning despite wide ambient temperature swings. Use Value: Supports operation from –25°C to +70°C with <0.2% VZ drift, meeting IEC 61000-6-2 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B (non-e3) | Identical electrical specs but SnPb-plated leads; not RoHS compliant | Restricted to legacy military/aerospace programs requiring Pb-based solder compatibility | Select only if Pb-containing assembly process is mandated and exemption documentation exists |
| MMSZ5234B-TP (Micro Commercial) | Surface-mount SOD-123 package; same 6.0 V ±5%, but PD = 500 mW and ZZ = 17 Ω | Suitable for space-constrained PCBs but cannot replace 1N5340BE3/TR8 in high-power regulation roles | Choose only for low-current biasing where thermal mass and surge capability are noncritical |
Compared with 1N5340B and MMSZ5234B-TP, the 1N5340BE3/TR8 uniquely combines 5 W power handling, 1.0 Ω impedance, axial-leaded mechanical robustness, and RoHS compliance-making it irreplaceable in high-reliability, high-surge industrial power designs.
Availability
1N5340BE3/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and precision reference generators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5340BE3/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 specifically for ruggedized voltage regulation in harsh-environment power systems-emphasizing surge resilience, wide temperature operation, and JEDEC-standardized mechanical interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5340BE3/TR8?
The 1N5340BE3/TR8 has a nominal Zener voltage of 6.0 V with a tolerance of ±5%, as indicated by the "B" suffix in its part number. This tolerance is guaranteed over the full operating temperature range of –65°C to +150°C and applies to devices tested at 200 mA Zener test current (IZT). The e3 suffix confirms RoHS compliance but does not affect voltage tolerance.
Can the 1N5340BE3/TR8 be used in surface-mount designs?
No-the 1N5340BE3/TR8 is an axial-leaded T-18 package device intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMBJ5340B or SMBG5340B in DO-214AA (SMB) packages. These share identical electrical specs but differ mechanically and thermally; direct substitution requires PCB redesign and thermal validation.
What is the maximum surge current rating for the 1N5340BE3/TR8?
The 1N5340BE3/TR8 has a maximum non-recurrent surge current (IZSM) of 12.7 A, specified for an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without degradation, making it suitable for automotive load-dump protection and industrial inductive switching clamp applications.
How does the thermal resistance of the 1N5340BE3/TR8 impact PCB layout?
The 1N5340BE3/TR8 has a junction-to-lead thermal resistance (RθJL) of 25°C/W when leads are trimmed to 10 mm from the body. To achieve full 5 W power dissipation, PCB traces connected to both leads must provide low-thermal-resistance paths-typically ≥4 mm² copper pads with ≥1 mm trace width-to avoid exceeding the 150°C maximum junction temperature.
Is the 1N5340BE3/TR8 suitable for precision voltage reference applications?
Yes-the 1N5340BE3/TR8 delivers 6.0 V regulation with 1.0 Ω dynamic impedance and 0.19 V voltage regulation (ΔVZ) across 10–50% of IZM, supporting stable references in feedback loops and sensor biasing. However, for sub-0.1% stability, external temperature compensation or higher-grade references (e.g., buried-Zener ICs) are recommended.
1N5340BE3/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:
- ±5%
- 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
1N5340BE3/TR8 FAQ
1.How can I place an order for 1N5340BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340BE3/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 1N5340BE3/TR8 reliable?
The price and inventory of 1N5340BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5340BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340BE3/TR8?
1N5340BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340BE3/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 1N5340BE3/TR8?
For technical support, including 1N5340BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340BE3/TR8 requirements.
6.How does Aetrix verify that 1N5340BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5340BE3/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 1N5340BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5340BE3/TR8?
All 1N5340BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340BE3/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 1N5340BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5340BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340BE3/TR8 Tags
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