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Microchip Technology 1N5367CE3/TR8
- Part No.:
- 1N5367CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367CE3/TR8.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,106
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Product details
Overview
1N5367CE3/TR8 from Microsemi is a 5 W axial-leaded Zener diode with nominal regulation voltage of 43 V, ±2% tolerance (C suffix), 30 mA test current, 20 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.5 μA at 32.7 V. 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 1N5367CE3/TR8 datasheet, 1N5367CE3/TR8 pinout, 1N5367CE3/TR8 application, or 1N5367CE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (190 A), voltage regulation (ΔVZ = 2.8 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output voltage across wide current (30 mA to 190 mA) and temperature (–65 °C to +150 °C) ranges. Its low dynamic impedance (20 Ω) and tight ±2% voltage tolerance ensure minimal deviation under load variation.
The 1N5367CE3/TR8 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5 W steady-state dissipation at 25 °C lead temperature and 1.47 W on FR4 PCB. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity and withstands 8.3 ms half-sine surge currents up to 190 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±2% - precise regulation point for feedback networks requiring high accuracy |
| Test Current (IZT) | 30 mA - operating point where VZ and ZZ are specified; defines nominal bias condition |
| Dynamic Impedance (ZZ) | 20 Ω at IZT - low AC resistance ensures minimal voltage shift under dynamic load changes |
| Max Reverse Leakage (IR) | 0.5 μA at 32.7 V - guarantees negligible standby current in high-impedance reference paths |
| Max Regulator Current (IZM) | 190 mA - maximum DC current before exceeding 5 W power limit at 25 °C lead temp |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal design with 3/8″ (10 mm) lead length for full 5 W operation |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL, void-free UL94V-0 epoxy body, cathode indicated by colored band, matte-tin plated leads compliant with MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common or ground when used in shunt regulation configuration |
| Cathode | Zener breakdown terminal / Regulated output node | Connected to regulated rail; banded end must be held positive relative to anode for proper operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables use in precision feedback circuits without external trimming components |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances |
| JEDEC-registered 1N53xxB series | Guarantees standardized electrical and mechanical specifications across qualified manufacturers |
| Level 1 moisture sensitivity | Eliminates dry pack requirement and floor life limitations for assembly planning |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations during assembly |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides stable 43 V reference for optocoupler-based feedback in isolated 48 V output DC-DC converters. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise error amplifier input threshold. Use Value: ±2% tolerance and 20 Ω ZZ maintain <±0.5% output regulation across line/load transients. | Use Scenario: Supplies excitation voltage to bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Precision voltage reference source with ultra-low leakage (<0.5 μA). Use Value: Low ΔVZ (2.8 V) and wide temperature range (–65 °C to +150 °C) ensure sensor linearity stability over environmental extremes. |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Clamps transient surges on 36 V battery rails in automotive body control modules. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 190 A 8.3 ms surges without failure. Use Value: High IZSM rating and robust epoxy package enable reliable field operation under ISO 7637-2 pulse 5a stress. | Use Scenario: Sets trip point for comparator-based undervoltage lockout in telecom power shelves. IC Role / Device Role / Timing Role: Stable reference input to LM393 comparator with minimal drift. Use Value: Tight tolerance and low knee impedance (500 Ω at 1 mA) ensure repeatable activation thresholds across production lots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B | Same 43 V nominal VZ, but ±5% tolerance (B suffix) vs. ±2% (C suffix); otherwise identical electrical specs and package | Acceptable where tighter tolerance not required; lower cost alternative for non-critical references | Select 1N5367B only if system-level testing confirms ±5% VZ variation remains within feedback loop stability margin |
| MMSZ5267ET1G | Surface-mount SOD-123 package; 43 V ±5%; 500 mW rating (vs. 5 W); ZZ = 35 Ω at 10 mA | Not suitable for high-power clamping; limited to low-current reference or portable electronics | Choose MMSZ5267ET1G only for space-constrained PCBs where power dissipation ≤0.5 W and tolerance ≥±5% is acceptable |
Compared with 1N5367B and MMSZ5267ET1G, the 1N5367CE3/TR8 delivers superior thermal performance (25 °C/W vs. >200 °C/W for SOD-123), higher surge capability (190 A vs. ~10 A), and tighter voltage control-making it the only option for industrial-grade 5 W shunt regulation.
Availability
1N5367CE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and programmable threshold detectors requiring stable component supply and long-term obsolescence management.
Supply support for 1N5367CE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5367CE3/TR8?
The 1N5367CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its actual regulation voltage falls within 42.14 V to 43.86 V at 30 mA test current and 25 °C lead temperature. The tighter tolerance supports precision feedback designs where reference accuracy directly impacts output regulation performance. This specification is verified per JEDEC Registered Data and applies across the full operating temperature range.
Can the 1N5367CE3/TR8 be used in surface-mount applications?
No, the 1N5367CE3/TR8 is an axial-leaded T-18 package device and is not compatible with surface-mount assembly processes. For SMT equivalents, Microsemi offers the SMBJ5367B or SMBG5367B in DO-214AA/DO-214AB packages. These share the same 43 V nominal Zener voltage but differ in power rating (3 W), thermal resistance (>100 °C/W), and surge capability. The 1N5367CE3/TR8 requires through-hole mounting with 3/8″ (10 mm) lead length for full 5 W operation.
What is the maximum surge current rating for the 1N5367CE3/TR8?
The 1N5367CE3/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 190 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper heat sinking and is validated per Microsemi's test methodology. The surge capability allows the 1N5367CE3/TR8 to absorb transient energy in automotive load-dump or industrial switching events without degradation. Derating applies above 25 °C ambient or lead temperature.
Does the 1N5367CE3/TR8 require dry packing before reflow soldering?
No, the 1N5367CE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is exempt from dry pack requirements and has unlimited floor life at standard ambient conditions. Its void-free thermosetting epoxy body provides inherent moisture resistance. The device can be stored and assembled without baking or humidity-controlled environments, simplifying manufacturing logistics and reducing process risk compared to MSL 3+ components.
How does the voltage regulation (ΔVZ) specification impact circuit design for the 1N5367CE3/TR8?
The 1N5367CE3/TR8 specifies ΔVZ = 2.8 V-the difference between Zener voltage measured at 10% and 50% of IZM (190 mA). This parameter quantifies regulation linearity across its usable current range. In practice, it means the output voltage will vary by no more than 2.8 V as load current shifts from ~19 mA to ~95 mA. Designers use this value to size series resistors and verify that downstream circuitry tolerates this voltage swing under worst-case operating conditions.
1N5367CE3/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):
- 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/TR8 FAQ
1.How can I place an order for 1N5367CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367CE3/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 1N5367CE3/TR8 reliable?
The price and inventory of 1N5367CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5367CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5367CE3/TR8?
1N5367CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367CE3/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 1N5367CE3/TR8?
For technical support, including 1N5367CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367CE3/TR8 requirements.
6.How does Aetrix verify that 1N5367CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5367CE3/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 1N5367CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5367CE3/TR8?
All 1N5367CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367CE3/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 1N5367CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5367CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5367CE3/TR8 Tags
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