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Microchip Technology 1N5367C/TR8
- Part No.:
- 1N5367C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367C/TR8.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,163
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Product details
Overview
1N5367C/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 43 V, ±2% tolerance (C suffix), 20 Ω dynamic impedance at 30 mA test current, and maximum reverse current 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 industrial power supplies.
For engineers reviewing the 1N5367C/TR8 datasheet, 1N5367C/TR8 pinout, 1N5367C/TR8 application, or 1N5367C/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-bias mode, maintaining stable output voltage across wide current variation (IZM = 190 mA at TL = 25 °C). Its low dynamic impedance (20 Ω) and tight ±2% VZ tolerance ensure minimal voltage drift under load changes.
The 1N5367C/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 derated linearly above that point. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±2% - precise regulation point for feedback loops in switching regulators. |
| Test Current (IZT) | 30 mA - standardized bias point for VZ measurement and impedance characterization. |
| Dynamic Impedance (ZZ) | 20 Ω at IZT - low AC resistance ensures stable voltage under varying load currents. |
| Max Reverse Current (IR) | 0.5 µA at 32.7 V - confirms sharp knee and low leakage below regulation threshold. |
| Max Regulator Current (IZM) | 190 mA - maximum DC current sustainable with adequate heat sinking at TL = 25 °C. |
| Surge Current (IZSM) | 190 A (8.3 ms half-sine) - withstands transient overvoltage events in power rails. |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free thermosetting epoxy, UL94V-0), cathode indicated by colored band. Leads are annealed matte-tin plated (RoHS compliant), solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower potential in Zener operation | Must be held at lower voltage than cathode to enable reverse breakdown regulation. |
| Cathode | Current exit terminal in forward bias; marked with band; higher potential in Zener operation | Connected to regulated output node; polarity critical-reverse connection prevents regulation. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback control in precision reference circuits without external trimming. |
| 25 °C/W junction-to-lead thermal resistance | Allows 5 W dissipation with modest heatsinking (e.g., 3/8″ lead length), simplifying thermal design. |
| Moisture sensitivity Level 1 (J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to assembly, reducing manufacturing cost. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits handling without special ESD controls, lowering production risk in standard environments. |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp in Telecom Line Cards |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier setpoint. Use Value: ±2% VZ tolerance reduces output variation across temperature and unit-to-unit spread. | Use Scenario: Protecting downstream circuitry from lightning-induced surges on -48 V DC distribution lines. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess energy during transients. Use Value: 190 A surge rating handles 8.3 ms half-sine surges without degradation. |
| Programmable Voltage Monitor Threshold | Calibrated Reference for ADC Biasing |
Use Scenario: Setting trip point for comparator-based undervoltage lockout (UVLO) in battery-powered systems. IC Role / Device Role / Timing Role: Stable analog reference defining detection threshold independent of supply rail. Use Value: Low ΔVZ (2.8 V) ensures consistent trip voltage across operating current range. | Use Scenario: Providing known reference voltage to bias input stages of 12-bit SAR ADCs in sensor signal chains. IC Role / Device Role / Timing Role: Low-drift DC reference source for analog front-end calibration. Use Value: 20 Ω ZZ minimizes loading-induced error when sourcing bias current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B/TR8 | ±5% VZ tolerance instead of ±2%; otherwise identical electrical specs and package. | Suitable where tighter regulation not required; lower cost alternative for non-critical references. | Select 1N5367B/TR8 only if system-level tolerance budget allows ≥±5% output variation. |
| MMSZ5267ET1G | Surface-mount SOD-123 package; 43 V ±5%; 500 mW rating; ZZ = 35 Ω at 10 mA. | Used in space-constrained PCBs; insufficient for 5 W continuous dissipation; requires different layout and thermal design. | Choose MMSZ5267ET1G only for low-power, high-density designs where 190 mA IZM is unnecessary. |
Compared with 1N5367B/TR8 and MMSZ5267ET1G, the 1N5367C/TR8 uniquely delivers ±2% regulation accuracy in a through-hole 5 W package-enabling high-reliability industrial references without redesigning thermal or mechanical interfaces.
Availability
1N5367C/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line card protection, programmable voltage monitors, and calibrated ADC biasing requiring stable component supply and long-term obsolescence management.
Supply support for 1N5367C/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB/C series was designed for robust, high-power voltage regulation in harsh-environment power systems-emphasizing thermal performance, surge resilience, and long-term stability over wide temperature ranges.
FAQ
What is the Zener voltage tolerance of the 1N5367C/TR8?
The 1N5367C/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix per Microsemi's datasheet. This means its nominal 43 V regulation voltage falls within 42.14 V to 43.86 V at 25 °C lead temperature. The 1N5367C/TR8 achieves this tighter tolerance versus the ±5% 1N5367B/TR8 variant, making it suitable for precision reference applications where output stability is critical.
What is the maximum continuous current the 1N5367C/TR8 can handle?
The 1N5367C/TR8 supports a maximum DC Zener current (IZM) of 190 mA when mounted with 3/8″ (10 mm) lead length from the body at 25 °C lead temperature. This corresponds to its 5 W power rating. Derating applies above 25 °C per Figure 1 in the datasheet; for example, at TL = 75 °C, IZM drops to approximately 133 mA. The 1N5367C/TR8 must be adequately heat sunk to sustain this current continuously.
Does the 1N5367C/TR8 require dry packing before PCB assembly?
No, the 1N5367C/TR8 does not require dry packing before PCB assembly. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it is not hygroscopic and poses no popcorning risk during reflow. The 1N5367C/TR8 can be stored and assembled directly from tape-and-reel packaging (TR8) without baking or humidity-controlled handling.
How is polarity marked on the 1N5367C/TR8?
The 1N5367C/TR8 uses a cathode band-typically a single colored stripe near one end of the axial body-to indicate polarity. The banded end is the cathode and must be connected to the higher-potential node in Zener regulation mode. Connecting the 1N5367C/TR8 with reversed polarity results in forward conduction (~1.2 V drop) and no voltage regulation. This marking is consistent across the full 1N5333–1N5388 family.
What is the surge current rating of the 1N5367C/TR8?
The 1N5367C/TR8 is rated for a peak non-recurrent surge current (IZSM) of 190 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure-critical for overvoltage protection in telecom and industrial power systems. The 1N5367C/TR8 maintains this capability due to its low thermal resistance (25 °C/W) and robust epoxy encapsulation.
1N5367C/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
1N5367C/TR8 FAQ
1.How can I place an order for 1N5367C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367C/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 1N5367C/TR8 reliable?
The price and inventory of 1N5367C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5367C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367C/TR8 transactions.
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4.How is shipping managed for 1N5367C/TR8?
1N5367C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367C/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 1N5367C/TR8?
For technical support, including 1N5367C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367C/TR8 requirements.
6.How does Aetrix verify that 1N5367C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5367C/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 1N5367C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5367C/TR8?
All 1N5367C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367C/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 1N5367C/TR8 part is unused and in its original packaging.
Return procedure for 1N5367C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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