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Microchip Technology 1N5341A/TR12
- Part No.:
- 1N5341A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5341A/TR12.pdf
- Description:
- DIODE ZENER 6.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,365
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Product details
Overview
1N5341A/TR12 from Microsemi is a 6.2 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply reference and overvoltage protection circuits. It delivers 200 mA maximum Zener current (IZM) at 25°C with 1.0 Ω dynamic impedance (ZZ) at 200 mA test current, operates from –65°C to +150°C, and features cathode band polarity marking.
For engineers reviewing the 1N5341A/TR12 datasheet, 1N5341A/TR12 pinout, 1N5341A/TR12 application, or 1N5341A/TR12 equivalent, key selection criteria include its 6.2 V nominal Zener voltage, ±10% tolerance (A suffix), 5 W steady-state power rating at TL < 25°C, low 1.0 Ω dynamic impedance, and T-18 axial package compatibility with through-hole PCB mounting.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable output voltage across wide current and temperature ranges. Its 1.0 Ω dynamic impedance ensures minimal voltage variation under load changes, and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W operation with adequate heat sinking at 3/8" lead length.
The device meets MIL-PRF-19500 screening options when prefixed (e.g., MQ, MX), supports RoHS compliance via e3 suffix, and exhibits ESD insensitivity per MIL-STD-750 Method 1020. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, ±10% tolerance - defines precise regulation point for feedback loops and reference rails. |
| Power Dissipation | 5.0 W at TL < 25°C (3/8" lead length) - supports high-current regulation without forced cooling. |
| Test Current (IZT) | 200 mA - standardized operating point for measuring VZ and dynamic impedance. |
| Dynamic Impedance (ZZ) | 1.0 Ω max at IZT = 200 mA - ensures tight voltage regulation under varying load conditions. |
| Max Reverse Current (IR) | 10 μA max at VR = 4.9 V - guarantees low leakage in standby or precision biasing applications. |
| Surge Current (IZSM) | 20 A peak (8.3 ms half-sine) - withstands transient overvoltage events without failure. |
| Operating Temperature | –65°C to +150°C - suitable for industrial, automotive, and aerospace environments. |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL standard; void-free UL94V-0 epoxy body; tin-lead or RoHS-compliant matte-tin plating; cathode indicated by colored band; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to voltage rail requiring stabilization; supplies regulated 6.2 V when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures industry-standard mechanical and electrical interchangeability across manufacturers. |
| ±10% voltage tolerance (A suffix) | Cost-optimized regulation accuracy for non-critical power references and clamping functions. |
| Low 1.0 Ω dynamic impedance | Minimizes output voltage deviation under dynamic load steps - critical for stable feedback paths. |
| MIL-PRF-19500 screening option | Enables qualification for high-reliability programs (JAN/JANTX/V) via prefix addition (e.g., MQ1N5341A). |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to assembly - reduces manufacturing overhead. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates error amplifier reference in isolated flyback or forward converter feedback loop. IC Role / Device Role / Timing Role: Zener reference element providing stable 6.2 V threshold for optocoupler-driven control signal. Use Value: Maintains ±10% output voltage accuracy across line/load transients and temperature drift up to +150°C. |
Use Scenario: Clamps surge-induced voltage spikes on DC bus lines in motor drives or industrial PLC inputs. IC Role / Device Role / Timing Role: Transient voltage suppression device shunting excess energy to ground during overvoltage events. Use Value: Withstands 20 A surge (8.3 ms) while limiting rail voltage to ≤6.8 V - protects downstream MOSFETs and controllers. |
| Programmable Voltage Reference | DC-DC Converter Output Sensing |
Use Scenario: Serves as adjustable reference in precision linear regulator designs using external resistor dividers. IC Role / Device Role / Timing Role: Primary voltage reference source setting output level of LDO or op-amp-based regulator. Use Value: Delivers 6.2 V with 1.0 Ω dynamic impedance - enables <0.1% load regulation error in 1 A output designs. |
Use Scenario: Monitors regulated output voltage in buck converter feedback network for closed-loop stability. IC Role / Device Role / Timing Role: Precision sensing node in resistive divider feeding error amplifier input. Use Value: Low leakage (10 μA @ 4.9 V) prevents divider current error - preserves ±0.5% output accuracy over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5341B | ±5% tolerance (vs. ±10% for 1N5341A/TR12); identical VZ, IZT, ZZ, and package. | Used where tighter regulation accuracy is required in feedback references or precision clamps. | Select 1N5341B when ±5% VZ stability is mandatory; otherwise 1N5341A/TR12 offers cost advantage. |
| MMBZ5234B (SOT-23) | Surface-mount package; 6.2 V ±5%; 0.5 W rating (vs. 5 W); 17 Ω dynamic impedance. | Suitable for space-constrained, low-power logic-level clamping - not for high-current regulation. | Choose MMBZ5234B only for PCB area-limited designs with IZ < 100 mA; 1N5341A/TR12 remains preferred for 5 W loads. |
Compared with 1N5341B and MMBZ5234B, the 1N5341A/TR12 provides optimal balance of cost, 5 W power handling, and axial through-hole mountability for industrial power supplies - whereas 1N5341B trades cost for tighter tolerance, and MMBZ5234B sacrifices power and thermal performance for miniaturization.
Availability
1N5341A/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable voltage references, and DC-DC converter output sensing requiring stable component supply and long-term obsolescence management.
Supply support for 1N5341A/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, RF, and power management solutions for aerospace, defense, and industrial markets.
The 1N53xxA/B series belongs to Microsemi's legacy silicon Zener diode product line, engineered for robust voltage regulation in harsh-environment power systems where thermal stability, surge resilience, and long-term parameter consistency are critical.
FAQ
What is the Zener voltage tolerance of the 1N5341A/TR12?
The 1N5341A/TR12 has a nominal Zener voltage of 6.2 V with a ±10% tolerance, as designated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ falls between 5.58 V and 6.82 V at 200 mA test current and 25°C. The tolerance directly impacts regulation accuracy in feedback networks and must be accounted for in design margins.
Can the 1N5341A/TR12 be used in surface-mount designs?
No - the 1N5341A/TR12 uses a T-18 axial-leaded package intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMBJ5341B (SMB package, 5 W) or MMBZ5234B (SOT-23, 0.5 W). Substituting 1N5341A/TR12 into an SMT layout would require mechanical redesign and is not electrically or thermally advisable.
What is the maximum surge current rating for the 1N5341A/TR12?
The 1N5341A/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 20 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating enables reliable clamping of transient overvoltages in industrial power rails without degradation, provided the device is properly heatsunk and not subjected to repeated surges beyond derated limits.
How does the thermal resistance of the 1N5341A/TR12 affect its power handling?
The 1N5341A/TR12 has a junction-to-lead thermal resistance of 25 °C/W at 3/8" lead length, allowing full 5 W dissipation at TL < 25°C. On FR4 PCB (1 oz Cu, 4 mm² pads), its junction-to-ambient resistance rises to 85 °C/W, limiting steady-state power to ~1.47 W at TA = 25°C. Effective heat sinking is essential to sustain rated power.
Is the 1N5341A/TR12 RoHS compliant?
Yes - the "TR12" suffix indicates tape-and-reel packaging; RoHS compliance is achieved when the "e3" suffix is added (e.g., 1N5341Ae3/TR12). Standard 1N5341A/TR12 may use tin-lead plating unless specified otherwise. For new designs requiring RoHS, confirm ordering with e3 suffix and verify material declarations with Aetrix Electronics.
1N5341A/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):
- 6.2 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
1N5341A/TR12 FAQ
1.How can I place an order for 1N5341A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5341A/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 1N5341A/TR12 reliable?
The price and inventory of 1N5341A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5341A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5341A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5341A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5341A/TR12?
1N5341A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5341A/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 1N5341A/TR12?
For technical support, including 1N5341A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5341A/TR12 requirements.
6.How does Aetrix verify that 1N5341A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5341A/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 1N5341A/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5341A/TR12?
All 1N5341A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5341A/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 1N5341A/TR12 part is unused and in its original packaging.
Return procedure for 1N5341A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5341A/TR12 Tags
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