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Microchip Technology 1N5340CE3/TR8
- Part No.:
- 1N5340CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340CE3/TR8.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,315
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Product details
Overview
1N5340CE3/TR8 from Microsemi is a 5.0 W axial-leaded silicon Zener diode with nominal regulation voltage of 6.0 V, ±2% tolerance (C suffix), 200 mA test current, and 790 Ω maximum dynamic impedance at IZT. 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 1N5340CE3/TR8 datasheet, 1N5340CE3/TR8 pinout, 1N5340CE3/TR8 application, or 1N5340CE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (12.7 A), regulation stability (ΔVZ = 0.19 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its Zener voltage is specified at 200 mA test current (IZT) with tight ±2% tolerance and exhibits low dynamic impedance (790 Ω max) and minimal voltage regulation drift (0.19 V ΔVZ) between 10% and 50% of IZM.
Thermal design relies on junction-to-lead thermal resistance of 25 °C/W at 3/8″ lead length, enabling 5.0 W steady-state dissipation at TL ≤ 25 °C. It is moisture-sensitive Level 1 per J-STD-020B and requires no dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±2% - precise reference for feedback networks requiring stable setpoint under varying load |
| Test Current (IZT) | 200 mA - defines operating point where VZ and ZZ are guaranteed |
| Max Dynamic Impedance (ZZ) | 790 Ω - limits output voltage variation under changing current, critical for low-noise references |
| Max Regulator Current (IZM) | 790 mA - maximum continuous DC current at rated power with adequate heat sinking |
| Voltage Regulation (ΔVZ) | 0.19 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| 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 - enables 5.0 W power dissipation with ≤25 °C temperature rise above lead temperature |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band; RoHS-compliant annealed matte-tin plating; weight 0.7 g; tape-and-reel packaging per EIA-296 (TR8 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference terminal | Connected to circuit ground or lower potential node in shunt regulation configuration |
| Cathode | Zener voltage output terminal | Banded end; connected to regulated node; must be held positive relative to anode during operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy voltage references without external trimming in feedback paths |
| JEDEC-registered 1N53xxB series | Guarantees mechanical and electrical interchangeability across qualified suppliers |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT assembly prep |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU and China RoHS II with lead-free matte-tin plating |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in TL431-based or discrete op-amp feedback circuits to regulate output voltage in AC/DC adapters and DC/DC converters. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.0 V setpoint for error amplifier comparison. Use Value: Tight ±2% tolerance ensures output accuracy within ±1% over line/load/temperature, reducing need for post-production calibration. | Use Scenario: Placed across sensitive IC inputs or bus lines to clamp transients exceeding 6.0 V. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing energy from ESD or inductive kickback events. Use Value: 12.7 A surge rating and low ΔVZ (0.19 V) limit clamping voltage overshoot, protecting downstream logic and analog components. |
| Programmable Voltage Reference | Current Source Biasing |
Use Scenario: Paired with a series resistor to generate stable bias voltages for op-amps, comparators, or ADC references. IC Role / Device Role / Timing Role: Precision two-terminal reference establishing fixed potential independent of supply variation. Use Value: 790 Ω dynamic impedance and 25 °C/W thermal resistance maintain <0.5% drift over 0–70 °C ambient when properly heatsunk. | Use Scenario: Configured in constant-current sink topology with transistor or op-amp to bias laser diodes or RF amplifiers. IC Role / Device Role / Timing Role: Stable voltage reference defining emitter/base voltage drop for current-setting resistors. Use Value: Low voltage regulation (0.19 V) ensures current stability within ±2% across 10–100 mA load range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B | Same 6.0 V nominal VZ, but ±5% tolerance (B suffix) vs. ±2% (C suffix); identical package and IZT/IZM | Acceptable where tighter tolerance not required; lower cost; higher VZ spread may require margining in feedback loops | Select 1N5340B only if system-level testing confirms ±5% VZ variation remains within regulation error budget. |
| MMSZ5234BT1G | Surface-mount SOD-123 package; same 6.0 V ±5%; 500 mW rating (vs. 5 W); 100 mA IZT; 170 Ω ZZ | Not suitable for high-power regulation; limited to low-current bias/reference use; incompatible pinout and thermal profile | Choose MMSZ5234BT1G only for space-constrained PCBs where power dissipation ≤0.5 W and board-level reflow compatibility is prioritized. |
Compared with 1N5340CE3/TR8, 1N5340B offers relaxed tolerance at lower cost but sacrifices reference accuracy, while MMSZ5234BT1G trades power handling and thermal robustness for miniaturization-neither is pin-compatible, and both require layout and thermal redesign.
Availability
1N5340CE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage references requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5340CE3/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 for rugged, high-stability voltage regulation in harsh-environment power systems where thermal resilience, surge immunity, and long-term parametric stability are critical.
FAQ
What is the Zener voltage tolerance of the 1N5340CE3/TR8?
The 1N5340CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its actual regulation voltage falls within 5.88 V to 6.12 V at 200 mA test current and 25 °C lead temperature. This tight tolerance supports precision feedback and reference applications where minimal setpoint drift is required. The 1N5340CE3/TR8 achieves this specification without external trimming or calibration.
Can the 1N5340CE3/TR8 be used in surface-mount designs?
No, the 1N5340CE3/TR8 is an axial-leaded T-18 package and is not compatible with surface-mount assembly. It requires through-hole mounting with 3/8″ (10 mm) lead length from body for rated 5.0 W dissipation. For SMT alternatives, consider Microsemi's SMBJ5340B or ON Semiconductor's 1SMA5918BT3G - both require separate thermal validation and are not drop-in replacements for the 1N5340CE3/TR8.
What is the maximum surge current rating for the 1N5340CE3/TR8?
The 1N5340CE3/TR8 has 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 enables the 1N5340CE3/TR8 to absorb transient overvoltages such as ESD events or inductive switching spikes without degradation. Derating applies for repeated surges, and sustained operation above IZM = 790 mA requires verified heat sinking.
How does the thermal resistance of the 1N5340CE3/TR8 affect its power handling?
The 1N5340CE3/TR8 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W at 3/8″ lead length. This allows full 5.0 W dissipation only when the lead temperature (TL) is maintained at or below 25 °C. At higher TL, power must be linearly derated - for example, at TL = 75 °C, max power drops to 3.0 W. PCB copper area does not substitute for proper lead heatsinking in the 1N5340CE3/TR8.
Is the 1N5340CE3/TR8 compliant with RoHS and REACH regulations?
Yes, the 1N5340CE3/TR8 carries the "e3" suffix, confirming RoHS compliance per EU Directive 2011/65/EU and China RoHS II. Its matte-tin plating is lead-free and meets MIL-STD-750 Method 2026 solderability requirements. Full REACH SVHC declaration is available from Microchip Technology's component compliance portal, and the 1N5340CE3/TR8 contains no substances above threshold concentrations.
1N5340CE3/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:
- ±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/TR8 FAQ
1.How can I place an order for 1N5340CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340CE3/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 1N5340CE3/TR8 reliable?
The price and inventory of 1N5340CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5340CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340CE3/TR8?
1N5340CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340CE3/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 1N5340CE3/TR8?
For technical support, including 1N5340CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340CE3/TR8 requirements.
6.How does Aetrix verify that 1N5340CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5340CE3/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 1N5340CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5340CE3/TR8?
All 1N5340CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340CE3/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 1N5340CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5340CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340CE3/TR8 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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