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Microchip Technology 1N5367CE3/TR12
- Part No.:
- 1N5367CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367CE3/TR12.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,460
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Product details
Overview
1N5367CE3/TR12 from Microsemi is a 5.0 W axial-leaded silicon Zener diode with nominal regulation voltage of 43 V, ±2% tolerance (C suffix), 30 mA test current, 20 Ω dynamic impedance at IZT, and 190 mA maximum Zener current when adequately heat-sunk. It provides stable voltage reference in power supply regulation and overvoltage protection circuits.
For engineers reviewing the 1N5367CE3/TR12 datasheet, 1N5367CE3/TR12 pinout, 1N5367CE3/TR12 application, or 1N5367CE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, power derating behavior at elevated lead temperature, surge current capability (2.8 A peak), and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This device operates as a reverse-biased voltage regulator with specified Zener voltage measured at 25 °C lead temperature using 40 ±10 ms DC current application. Its regulation stability relies on low dynamic impedance (20 Ω at 30 mA) and tight ±2% voltage tolerance across operating temperature range.
Thermal performance is defined by junction-to-lead thermal resistance of 25 °C/W at 10 mm lead length, enabling 5.0 W steady-state dissipation at TL < 25 °C. At ambient mounting on FR4 (1 oz Cu, 4 mm² pad), power rating drops to 1.47 W due to higher 85 °C/W junction-to-ambient resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±2% - precise reference for feedback loops in 48 V system regulators |
| Test Current (IZT) | 30 mA - defines operating point where VZ and ZZ are guaranteed |
| Dynamic Impedance (ZZ) | 20 Ω max at IZT - ensures minimal output voltage shift under load transients |
| Max Zener Current (IZM) | 190 mA - maximum continuous DC current at TL < 25 °C with adequate heatsinking |
| Surge Current (IZSM) | 2.8 A peak (8.3 ms half-sine) - withstands short-duration overvoltage events |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between VZ measured at 10% and 50% of IZM |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - limits conduction loss during forward bias fault conditions |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-201AD; void-free UL94V-0 epoxy body; cathode indicated by band; leads plated with RoHS-compliant annealed matte-tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to circuit ground or lower potential; forms reference path with cathode |
| Cathode | Regulated output node | Banded end; connected to unregulated input; delivers stable 43 V to load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy feedback without external trimming in 43 V SMPS designs |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with matte-tin plating and halogen-free epoxy |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to PCB assembly |
| 2.8 A non-recurrent surge rating | Protects downstream circuitry against transient overvoltages per IEC 61000-4-5 |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model discharges without parameter shift or failure |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference diode providing precise 43 V threshold for TL431-like comparator action. Use Value: Maintains ±1% output regulation across line/load/temperature with no external calibration. | Use Scenario: Clamps transient spikes on 48 V telecom distribution rails. IC Role / Device Role / Timing Role: Shunt protection element diverting surge energy to ground before IC damage occurs. Use Value: Absorbs 2.8 A (8.3 ms) surges without degradation, preserving downstream DC-DC converters. |
| Industrial Sensor Excitation | Programmable Voltage Reference |
Use Scenario: Supplies stable excitation voltage to 4–20 mA current-loop pressure sensors. IC Role / Device Role / Timing Role: Precision shunt reference establishing fixed 43 V rail for sensor bridge biasing. Use Value: Delivers <0.02% long-term drift and <10 ppm/°C TC over –40 °C to +125 °C. | Use Scenario: Sets reference voltage for analog-to-digital converter input scaling. IC Role / Device Role / Timing Role: Low-noise, low-impedance voltage source replacing bulkier IC references. Use Value: Provides 43 V reference with 20 Ω output impedance, reducing gain error in 16-bit ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B | ±5% tolerance (B suffix) vs. ±2% (C suffix); otherwise identical electrical specs and package | Acceptable where 43 V ±2.15 V meets system margin vs. tighter 43 V ±0.86 V required here | Select 1N5367B only if cost sensitivity outweighs voltage accuracy requirements in feedback paths |
| MMSZ5267ET1G | Surface-mount SOD-123 package; 500 mW rating; 43 V ±5%; 100 Ω ZZ at 10 mA | Not suitable for 5 W continuous dissipation; limited to low-power bias/reference roles | Choose MMSZ5267ET1G only for space-constrained PCBs where power < 0.5 W and ±5% tolerance is acceptable |
Compared with 1N5367B and MMSZ5267ET1G, the 1N5367CE3/TR12 uniquely combines ±2% tolerance, 5 W power handling, axial-leaded through-hole mounting, and RoHS compliance-making it optimal for industrial power supplies requiring precision and robustness.
Availability
1N5367CE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection circuits, and sensor excitation systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5367CE3/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 1N53xxB series was designed specifically for high-stability, high-power voltage regulation in harsh-environment power conversion and protection applications-emphasizing thermal robustness, surge resilience, and tight parametric control.
FAQ
What is the Zener voltage tolerance of the 1N5367CE3/TR12?
The 1N5367CE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its regulated voltage falls within 42.14 V to 43.86 V at 25 °C lead temperature and 30 mA test current. This tighter tolerance supports precision feedback in regulated power supplies where ±5% devices like the 1N5367B would introduce unacceptable output variation. The 1N5367CE3/TR12 maintains this specification across its full operating temperature range.
Can the 1N5367CE3/TR12 be used without a heatsink?
The 1N5367CE3/TR12 can operate without an external heatsink only at significantly derated power levels. Its full 5.0 W rating applies only when lead temperature (TL) is held below 25 °C-typically requiring substantial copper pour or chassis mounting. On standard FR4 PCBs with 4 mm² copper pads, its steady-state rating drops to 1.47 W at 25 °C ambient. For continuous operation near 5 W, active or passive heatsinking maintaining TL < 25 °C is mandatory. The 1N5367CE3/TR12's 25 °C/W junction-to-lead thermal resistance enables this performance when properly mounted.
What does the "e3" and "TR12" suffix mean in 1N5367CE3/TR12?
The "e3" suffix indicates RoHS-compliant construction with matte-tin lead plating and halogen-free epoxy encapsulation per EU Directive 2011/65/EU. The "TR12" denotes tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel-optimized for automated SMT placement despite the device being axial-leaded and intended for through-hole assembly. This configuration ensures consistent feeding in pick-and-place machines while preserving the 1N5367CE3/TR12's thermal and electrical integrity.
How does the 1N5367CE3/TR12 handle surge currents?
The 1N5367CE3/TR12 is rated for a non-recurrent surge current (IZSM) of 2.8 A, defined as the peak of an 8.3 ms half-sine waveform. This capability allows it to absorb transient overvoltages-such as those from inductive switching or lightning-induced surges-without degradation. Its robust construction, including low thermal resistance and moisture-resistant epoxy, ensures reliable clamping performance in telecom and industrial environments. The 1N5367CE3/TR12 sustains this rating across its full operating temperature range when mounted per specified lead length.
Is the 1N5367CE3/TR12 suitable for surface-mount assembly?
No, the 1N5367CE3/TR12 is not suitable for surface-mount assembly. It uses the axial-leaded T-18 (DO-201AD) package with 10 mm lead length, designed for through-hole mounting and manual or wave soldering. While supplied on tape-and-reel (TR12), this format accommodates automated handling-not SMT reflow. Attempting reflow soldering would exceed its 260 °C/10 s maximum solder temperature limit and risk delamination or parameter shift. For SMT applications, Microsemi offers surface-mount equivalents like SMBJ5367B, but the 1N5367CE3/TR12 must be mounted through-hole to meet its published specifications.
1N5367CE3/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):
- 43 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 31 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
1N5367CE3/TR12 FAQ
1.How can I place an order for 1N5367CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367CE3/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 1N5367CE3/TR12 reliable?
The price and inventory of 1N5367CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5367CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5367CE3/TR12?
1N5367CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367CE3/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 1N5367CE3/TR12?
For technical support, including 1N5367CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367CE3/TR12 requirements.
6.How does Aetrix verify that 1N5367CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5367CE3/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 1N5367CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5367CE3/TR12?
All 1N5367CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367CE3/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 1N5367CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5367CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5367CE3/TR12 Tags
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