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Microchip Technology 1N5340CE3/TR12
- Part No.:
- 1N5340CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340CE3/TR12.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,523
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Product details
Overview
1N5340CE3/TR12 from Microsemi is a 6.0 V, ±2% tolerance, 5 W axial-leaded silicon Zener diode optimized for precision 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 1N5340CE3/TR12 datasheet, 1N5340CE3/TR12 pinout, 1N5340CE3/TR12 application, or 1N5340CE3/TR12 equivalent, key selection criteria include Zener voltage tolerance (±2%), maximum surge current (12.7 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This Zener diode operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be biased positive relative to the anode. Its low 1.0 Ω dynamic impedance at 200 mA ensures minimal voltage variation under load changes, while its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with standard 3/8″ lead length heat sinking.
The device meets JEDEC 1N53xxB registration requirements and supports MIL-PRF-19500 screening (JAN/JANTX/JANTXV) via prefix addition. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required - and it withstands 260 °C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±2% - precise reference for feedback networks requiring tight regulation |
| Test Current (IZT) | 200 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 1.0 Ω max - low AC resistance ensures stable output under varying load currents |
| Max Regulator Current (IZM) | 790 mA - maximum DC current at which 5 W power rating is maintained with proper heatsinking |
| Surge Current (IZSM) | 12.7 A - peak non-repetitive half-sine (8.3 ms) capability for transient overvoltage clamping |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables full 5 W operation with 3/8″ (10 mm) lead length from body |
| Operating Temperature | –65°C to +150°C - suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case per JEDEC TO-204AA; void-free UL94V-0 epoxy body; cathode indicated by band; leads plated with RoHS-compliant annealed matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal to be at lower potential than cathode |
| Cathode (banded end) | Zener regulation node | Connected to regulated rail or feedback point; must be held positive relative to anode to maintain breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without external trimming components |
| RoHS-compliant e3 suffix | Meets global environmental compliance requirements without performance trade-offs |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints during assembly |
| 1.2 V forward voltage max @ 1.0 A | Ensures low-loss forward conduction when used in dual-direction clamp configurations |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for special ESD controls in production |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 6.0 V threshold to TL431 or similar shunt regulator. Use Value: ±2% tolerance ensures output accuracy within ±1% over line/load/temperature, reducing need for post-production calibration. | Use Scenario: Clamps transient surges on 5 V logic rails caused by inductive switching or ESD events. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting excess energy to ground before downstream IC damage occurs. Use Value: 12.7 A surge rating and 1.0 Ω ZZ enable effective clamping of 8.3 ms transients without voltage overshoot exceeding 6.3 V. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Serves as stable excitation source for resistive bridge sensors in pressure or load-cell interfaces. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference replacing higher-cost bandgap ICs in cost-sensitive analog front ends. Use Value: 25 °C/W thermal resistance and –65°C to +150°C range support stable operation in unregulated enclosures with ambient swings. | Use Scenario: Provides regulated bias voltage to 4–20 mA transmitter circuits in process control systems. IC Role / Device Role / Timing Role: Primary voltage reference for current-loop DAC stages requiring long-term stability and temperature resilience. Use Value: Minimal ΔVZ (0.19 V) between 10% and 50% of IZM ensures consistent loop compliance voltage across operating current range. |
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 nominal voltage but ±5% tolerance (B suffix) vs. ±2% (C suffix) | Lower accuracy acceptable in non-critical biasing or coarse clamping roles | Select when tighter tolerance is unnecessary and cost optimization is prioritized |
| MMSZ4685-TP | Surface-mount SOD-123 package; 6.2 V nominal; ±5%; 500 mW rating | Not suitable for 5 W continuous dissipation; limited to low-power signal-level regulation | Choose only for space-constrained PCBs where power demand is ≤0.5 W and thermal design cannot accommodate axial leads |
Compared with 1N5340B and MMSZ4685-TP, the 1N5340CE3/TR12 uniquely combines ±2% tolerance, 5 W power handling, axial-leaded mechanical robustness, and RoHS compliance - making it the only option for high-accuracy, high-power, through-hole Zener regulation in industrial power systems.
Availability
1N5340CE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for 1N5340CE3/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, high-power voltage regulation in harsh-environment power conversion and protection systems - emphasizing thermal resilience, surge robustness, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of the 1N5340CE3/TR12?
The 1N5340CE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 6.0 V regulation is guaranteed between 5.88 V and 6.12 V at 200 mA test current and 25°C lead temperature. This tight tolerance supports high-accuracy feedback and reference applications where wider tolerances would require additional trimming or compensation.
Does the 1N5340CE3/TR12 require dry packing before PCB assembly?
No, the 1N5340CE3/TR12 does not require dry packing. It is rated at Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has no floor-life limitation and can be stored and assembled without baking or humidity-controlled packaging. This simplifies inventory handling and reduces manufacturing overhead compared to higher-MSL components.
What is the maximum continuous power dissipation for the 1N5340CE3/TR12?
The 1N5340CE3/TR12 is rated for 5.0 W continuous power dissipation at 25°C lead temperature (TL) with 3/8″ (10 mm) lead length from the body. Derating is required above 25°C - approximately 20 mW/°C - per the published power derating curve. On FR4 board with 1 oz copper, steady-state power drops to 1.47 W at 25°C ambient due to higher junction-to-ambient thermal resistance.
Can the 1N5340CE3/TR12 be used as a replacement for the 1N5340B?
Yes, the 1N5340CE3/TR12 can functionally replace the 1N5340B in most circuits, as both share identical 6.0 V nominal Zener voltage, 200 mA test current, and 5 W power rating. However, the 1N5340CE3/TR12 offers tighter ±2% tolerance versus ±5% for the B-suffix version, improving regulation accuracy without layout or schematic changes.
What is the surge current rating of the 1N5340CE3/TR12 and how is it defined?
The 1N5340CE3/TR12 has a maximum non-repetitive surge current (IZSM) of 12.7 A, defined as the peak value of a single 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy during overvoltage events such as lightning-induced spikes or inductive kickback, ensuring survivability beyond steady-state operating limits without degradation.
1N5340CE3/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:
- ±2%
- 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
1N5340CE3/TR12 FAQ
1.How can I place an order for 1N5340CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340CE3/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 1N5340CE3/TR12 reliable?
The price and inventory of 1N5340CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5340CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340CE3/TR12?
1N5340CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340CE3/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 1N5340CE3/TR12?
For technical support, including 1N5340CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340CE3/TR12 requirements.
6.How does Aetrix verify that 1N5340CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5340CE3/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 1N5340CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5340CE3/TR12?
All 1N5340CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340CE3/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 1N5340CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5340CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340CE3/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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