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Microchip Technology 1N5340A/TR12
- Part No.:
- 1N5340A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340A/TR12.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,442
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Product details
Overview
1N5340A/TR12 from Microsemi is a 6.0 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications requiring stable breakdown under varying load and temperature conditions.
For engineers reviewing the 1N5340A/TR12 datasheet, 1N5340A/TR12 pinout, 1N5340A/TR12 application, or 1N5340A/TR12 equivalent, this part delivers verified 6.0 V regulation at 200 mA test current, low 1.0 Ω dynamic impedance, and high surge current capability (12.7 A) in a T-18 package with cathode band polarity marking.
Technical Context
This Zener operates in reverse-bias breakdown mode with a nominal zener voltage of 6.0 V measured at 200 mA (IZT), exhibiting minimal voltage variation (ΔVZ = 0.19 V) between 10% and 50% of its maximum regulated current (IZM = 790 mA). Its thermal resistance is 25 °C/W junction-to-lead at 10 mm lead length.
The device features a void-free thermosetting epoxy case (UL94V-0), tin-lead or RoHS-compliant matte-tin plating, and meets MIL-STD-750 Method 1020 for ESD insensitivity. It is rated for operation from –65 °C to +150 °C with moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±10% - precise regulation point for feedback and clamp circuits |
| Test Current (IZT) | 200 mA - standardized operating point for VZ measurement and stability validation |
| Dynamic Impedance (ZZ) | 1.0 Ω - low AC resistance ensures minimal voltage shift under dynamic load changes |
| Max Regulator Current (IZM) | 790 mA - maximum continuous DC current before thermal derating begins |
| Surge Current (IZSM) | 12.7 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
| Voltage Regulation (ΔVZ) | 0.19 V - difference between VZ at 10% and 50% of IZM, indicating tight regulation linearity |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - ensures predictable conduction during forward-bias fault conditions |
| Thermal Resistance (RθJL) | 25 °C/W - enables reliable 5 W dissipation with modest heatsinking at lead |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC TO-204AA; cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to lower-potential side in regulation circuit; carries full IZM current during operation |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential side; defines 6.0 V reference relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Ensures industry-standard mechanical and electrical interchangeability across suppliers |
| ±10% voltage tolerance (A suffix) | Cost-optimized regulation accuracy suitable for non-critical power rail clamping |
| 5.0 W steady-state power rating | Supports robust overvoltage protection without external heatsink in moderate ambient |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to PCB assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and ESD protection overhead in manufacturing |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated DC-DC converters to regulate output voltage via TL431-compatible reference. IC Role / Device Role / Timing Role: Zener reference element providing stable 6.0 V threshold for error amplifier input. Use Value: Maintains ±10% output regulation across line/load/temperature with minimal parts count and no active biasing. | Use Scenario: Placed across sensitive IC supply rails (e.g., microcontroller VDD) to shunt transient overvoltages exceeding 6.6 V. IC Role / Device Role / Timing Role: Passive voltage clamp limiting rail excursion during ESD or inductive switching events. Use Value: Absorbs up to 12.7 A surge (8.3 ms) without failure, protecting downstream logic from latch-up or damage. |
| Precision Reference Generator | Industrial Sensor Excitation |
Use Scenario: Paired with a current source to generate a stable 6.0 V reference for ADC voltage references or analog front-end biasing. IC Role / Device Role / Timing Role: Primary voltage reference node with low ΔVZ (0.19 V) ensuring consistent scaling across operating current range. Use Value: Enables <1% full-scale error in 12-bit measurement systems without trimming or calibration. | Use Scenario: Supplies excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh industrial environments. IC Role / Device Role / Timing Role: Stable, low-noise bias source maintaining constant sensor drive despite supply ripple or temperature drift. Use Value: Delivers 6.0 V ±0.6 V over –40 °C to +85 °C, reducing temperature-induced offset in bridge outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B/TR12 | ±5% tolerance (vs. ±10%); same VZ, IZT, ZZ, IZM, and package | Higher accuracy required in closed-loop feedback where tighter regulation reduces output variance | Select when system-level tolerance budget demands <±5% reference stability |
| MMBZ5234B-TP | Surface-mount SOT-23 package; 6.0 V ±5%; 0.25 W rating; 100 mA IZM | Low-power, space-constrained designs where board area and weight are critical | Select for portable or high-density PCBs where axial leads are impractical |
Compared with 1N5340A/TR12, the 1N5340B/TR12 offers improved voltage accuracy but identical thermal and surge performance, while MMBZ5234B-TP trades 5 W power handling for compactness and reduced thermal mass-making it unsuitable for high-energy clamping but ideal for signal-level referencing.
Availability
1N5340A/TR12 is available at Aetrix Electronics and suitable for switch-mode 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 1N5340A/TR12 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 voltage regulation in mission-critical power systems where thermal stability, surge resilience, and long-term parametric consistency are mandatory.
FAQ
What is the zener voltage tolerance of the 1N5340A/TR12?
The 1N5340A/TR12 has a nominal zener voltage of 6.0 V with a tolerance of ±10%, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ at 200 mA test current falls within 5.4 V to 6.6 V at 25 °C lead temperature. The tolerance is guaranteed across the full operating temperature range of –65 °C to +150 °C.
Can the 1N5340A/TR12 be used in surface-mount designs?
No, the 1N5340A/TR12 is an axial-leaded T-18 package device and is not compatible with surface-mount assembly processes. For SMT equivalents, Microsemi offers the SMBJ5340B series in DO-214AA (SMB) package. The 1N5340A/TR12 requires through-hole mounting with 10 mm lead length for specified thermal performance.
What is the maximum surge current rating for the 1N5340A/TR12?
The 1N5340A/TR12 is rated for a maximum non-repetitive surge current (IZSM) of 12.7 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper PCB layout with adequate copper pour and is validated per Microsemi's test methodology. Exceeding this value risks irreversible junction damage.
Does the 1N5340A/TR12 require dry packing before reflow soldering?
No, the 1N5340A/TR12 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and does not require dry pack or baking prior to soldering. The void-free epoxy body provides inherent moisture resistance, simplifying manufacturing flow and eliminating desiccant handling.
How does the voltage regulation (ΔVZ) specification impact circuit design with the 1N5340A/TR12?
The 1N5340A/TR12 specifies ΔVZ = 0.19 V-the difference between zener voltage measured at 10% and 50% of IZM (790 mA). This quantifies line regulation linearity: for example, if load current varies between 79 mA and 395 mA, output voltage shifts by ≤0.19 V. Designers use this to bound worst-case error in feedback or reference paths without additional compensation.
1N5340A/TR12 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/TR12 FAQ
1.How can I place an order for 1N5340A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340A/TR12 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/TR12 reliable?
The price and inventory of 1N5340A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5340A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340A/TR12?
1N5340A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340A/TR12 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/TR12?
For technical support, including 1N5340A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340A/TR12 requirements.
6.How does Aetrix verify that 1N5340A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5340A/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5340A/TR12?
All 1N5340A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340A/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N5340A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340A/TR12 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAZ12-13-F
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