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Microchip Technology 1N5341B/TR12
- Part No.:
- 1N5341B/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5341B/TR12.pdf
- Description:
- DIODE ZENER 6.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,761
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Product details
Overview
1N5341B/TR12 from Microsemi is a 5.0 W axial-leaded silicon Zener diode with nominal regulation voltage of 6.2 V ±5%, 200 mA test current (IZT), 1.0 Ω maximum dynamic impedance (ZZ), and 765 mA maximum Zener current (IZM) at 25°C lead temperature. It operates from −65°C to +150°C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5341B/TR12 datasheet, 1N5341B/TR12 pinout, 1N5341B/TR12 application, or 1N5341B/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (12.4 A), voltage regulation (ΔVZ = 0.10 V), and RoHS-compliant e3 marking compatibility.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its Zener voltage is specified at 6.2 V with ±5% tolerance (B suffix), measured at 200 mA dc test current (IZT) and 25°C lead temperature (TL). The low dynamic impedance (1.0 Ω) ensures stable regulation across load variations.
It exhibits minimal voltage drift versus current-ΔVZ = 0.10 V between 10% and 50% of IZM-and withstands non-recurring 8.3 ms half-sine surge currents up to 12.4 A. Thermal design requires attention to lead length (3/8″ from body) to maintain 25 °C/W junction-to-lead resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% - precise regulation point for feedback sensing in linear regulators and shunt references. |
| Test Current (IZT) | 200 mA - operating point where VZ and ZZ are guaranteed; defines minimum stable bias current. |
| Dynamic Impedance (ZZ) | 1.0 Ω max - low AC resistance ensures minimal output voltage variation under dynamic load changes. |
| Max Zener Current (IZM) | 765 mA - maximum continuous DC current at TL = 25°C with adequate heat sinking (3/8″ lead length). |
| Voltage Regulation (ΔVZ) | 0.10 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity. |
| Surge Current (IZSM) | 12.4 A - peak non-recurring 8.3 ms half-sine current handling for transient overvoltage suppression. |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead resistance at 3/8″ (10 mm) lead length; critical for power derating calculations. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free thermosetting epoxy, UL94V-0 rated), cathode indicated by band. Leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| 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 / regulation output node | Banded end; connected to regulated voltage rail; carries full Zener current during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB mechanical and electrical specifications for interchangeability. |
| Moisture Sensitivity Level 1 | No dry pack required-enables immediate PCB assembly without baking preconditioning. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020-reduces handling precautions in manufacturing environments. |
| RoHS-compliant (e3) | Lead-free plating and packaging meet EU Directive 2011/65/EU requirements. |
| High surge current capability | Withstands 12.4 A (8.3 ms half-sine) - suitable for input-stage transient clamping in industrial power supplies. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Shunt-connected across optocoupler input in isolated flyback converter feedback path. IC Role / Device Role / Timing Role: Precision voltage reference defining output regulation setpoint via TL431-compatible bias network. Use Value: 6.2 V ±5% tolerance and 0.10 V ΔVZ ensure ±1.5% output voltage accuracy across line/load/temperature. | Use Scenario: Biasing bridge sensor outputs in 4–20 mA transmitter front-end circuits. IC Role / Device Role / Timing Role: Stable excitation reference for Wheatstone bridge and instrumentation amplifier stages. Use Value: Low 1.0 Ω dynamic impedance minimizes reference error due to varying sensor current draw. |
| Overvoltage Protection Clamp | Programmable Threshold Detector |
Use Scenario: Connected between microcontroller I/O rail and ground to clamp transients exceeding 6.2 V. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting voltage stress on 5 V logic inputs. Use Value: 12.4 A surge rating absorbs repetitive 100 ns–1 µs spikes without degradation. | Use Scenario: Paired with comparator to trigger fault response when supply exceeds 6.2 V threshold. IC Role / Device Role / Timing Role: Fixed-voltage reference establishing hysteresis-free trip point for brown-out detection. Use Value: Tight ±5% tolerance eliminates need for external trimming resistors in cost-sensitive monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5341B (non-TR12) | Same electrical specs; differs only in packaging-bulk vs. tape-and-reel (TR12 = 12,000 pcs/reel). | No functional difference; TR12 enables automated SMT placement; bulk preferred for hand-solder prototyping. | Select 1N5341B/TR12 for high-volume production requiring reel-fed pick-and-place; choose bulk for evaluation or low-run assembly. |
| MMBZ5234B (SOT-23) | Surface-mount package; same 6.2 V ±5% rating but lower 0.5 W power rating and higher 10 Ω ZZ. | Not suitable for 5 W dissipation; limited to low-current (<100 mA) reference or signal-level clamping. | Choose MMBZ5234B only for space-constrained PCBs where power dissipation ≤0.5 W is sufficient. |
Compared with 1N5341B/TR12, the bulk version offers identical performance with manual handling flexibility, while MMBZ5234B trades power capability and regulation precision for miniaturization-making it unsuitable as a direct replacement in 5 W applications.
Availability
1N5341B/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning, overvoltage protection circuits, and programmable threshold detection requiring stable component supply and JEDEC-standard Zener performance.
Supply support for 1N5341B/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for robust, high-power voltage regulation in harsh-environment power systems where long-term stability, surge resilience, and JEDEC interoperability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5341B/TR12?
The 1N5341B/TR12 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix per Microsemi's documentation. This means its nominal 6.2 V regulation voltage falls within 5.89 V to 6.51 V at 200 mA test current and 25°C lead temperature. The tolerance is guaranteed across the full operating temperature range of −65°C to +150°C, making the 1N5341B/TR12 suitable for applications demanding consistent reference accuracy without calibration.
How does thermal resistance affect the 1N5341B/TR12's power handling capability?
The 1N5341B/TR12 has a junction-to-lead thermal resistance of 25 °C/W when mounted with 3/8″ (10 mm) lead length from the body. At ambient temperatures above 25°C, its 5.0 W power rating must be derated linearly-e.g., at TL = 75°C, maximum dissipation drops to 3.75 W. This thermal behavior directly limits usable Zener current in enclosed or high-temperature environments and must be accounted for in heatsinking design to prevent premature failure of the 1N5341B/TR12.
Is the 1N5341B/TR12 RoHS compliant?
Yes, the 1N5341B/TR12 is RoHS compliant, as confirmed by the "e3" suffix in its full manufacturer designation (1N5341B/TR12 e3). This indicates lead-free matte-tin plating on leads and compliance with EU Directive 2011/65/EU. The device meets exemption 7a for lead in high-melting-temperature type solders and is qualified for use in environmentally regulated commercial and industrial electronics without restriction.
What is the maximum surge current rating for the 1N5341B/TR12?
The 1N5341B/TR12 is rated for a maximum non-recurring surge current (IZSM) of 12.4 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without parametric shift or catastrophic failure. Engineers apply this spec when designing input-stage clamping networks for AC/DC adapters or motor drives where line surges exceed steady-state Zener current-ensuring the 1N5341B/TR12 remains functional after repeated exposure.
Can the 1N5341B/TR12 be used as a direct replacement for older 1N5341 variants?
Yes, the 1N5341B/TR12 is a direct replacement for legacy 1N5341 devices with identical electrical and mechanical specifications, including Zener voltage, power rating, and T-18 package dimensions. The "B" suffix confirms ±5% tolerance, and "TR12" denotes tape-and-reel packaging-no circuit or layout changes are needed. However, verify that prior versions lacked the e3 RoHS marking if compliance is required, as the 1N5341B/TR12 explicitly meets current environmental standards.
1N5341B/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:
- ±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
1N5341B/TR12 FAQ
1.How can I place an order for 1N5341B/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5341B/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 1N5341B/TR12 reliable?
The price and inventory of 1N5341B/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5341B/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5341B/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5341B/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5341B/TR12?
1N5341B/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5341B/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 1N5341B/TR12?
For technical support, including 1N5341B/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5341B/TR12 requirements.
6.How does Aetrix verify that 1N5341B/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5341B/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 1N5341B/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5341B/TR12?
All 1N5341B/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5341B/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 1N5341B/TR12 part is unused and in its original packaging.
Return procedure for 1N5341B/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5341B/TR12 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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