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Microchip Technology 1N5367A/TR8
- Part No.:
- 1N5367A/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367A/TR8.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,648
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Product details
Overview
1N5367A/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 43 V, ±10% tolerance (A suffix), 30 mA test current (IZT), 20 Ω dynamic impedance (ZZ), and maximum reverse leakage of 0.5 μA at 32.7 V (VR). 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 1N5367A/TR8 datasheet, 1N5367A/TR8 pinout, 1N5367A/TR8 application, or 1N5367A/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 across wide current (10–190 mA) and temperature (–65 °C to +150 °C) ranges. Its low 25 °C/W junction-to-lead thermal resistance enables high steady-state power dissipation (5 W at TL < 25 °C) when mounted with 10 mm lead length from body.
The 1N5367A/TR8 exhibits minimal voltage drift versus current-ΔVZ of only 2.8 V between 10% and 50% of IZM-and maintains tight regulation under transient surges (8.3 ms half-sine, 190 A peak). Its cathode band polarity and UL94V-0 void-free epoxy case support reliable axial mounting in high-reliability PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±10% - defines nominal regulation point; actual range 38.7–47.3 V at 30 mA test current |
| Power Dissipation | 5.0 W at TL < 25 °C - requires ≥10 mm lead length from body for full rating; derates linearly above 25 °C |
| Dynamic Impedance (ZZ) | 20 Ω - ensures low voltage variation under load changes; measured at 1 kHz with 10% AC ripple on 30 mA DC |
| Reverse Leakage (IR) | 0.5 μA max at VR = 32.7 V - guarantees minimal standby current in voltage-reference circuits |
| Surge Current (IZSM) | 190 A peak - withstands non-repetitive 8.3 ms half-sine transients common in power-line protection |
| Thermal Resistance | 25 °C/W junction-to-lead - enables high-current operation with simple lead-based heat sinking |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between voltage at 10% and 50% of IZM (190 mA), indicating regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic case (UL94V-0 epoxy), cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; forward voltage ≤1.2 V at 1.0 A |
| Cathode | Banded end | Connected to higher-potential node; reverse-biased during regulation; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, marking, and electrical behavior across global supply chain |
| Moisture sensitivity Level 1 | No dry pack required before PCB assembly; compatible with standard reflow and wave soldering |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020; eliminates need for special handling in production environments |
| High surge current capability | 190 A peak (8.3 ms half-sine) supports robust overvoltage clamping without degradation |
| Stable regulation over temperature | Operates continuously from –65 °C to +150 °C with predictable VZ drift and ΔVZ performance |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stable 43 V reference in isolated DC-DC converter feedback loop for telecom power modules. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing error signal to PWM controller. Use Value: ±10% VZ tolerance and 2.8 V ΔVZ ensure consistent regulation across input line and load variations. |
Use Scenario: Clamping transient spikes on 48 V DC bus in factory automation controllers. IC Role / Device Role / Timing Role: Shunt protector diverting surge energy to ground during lightning-induced transients. Use Value: 190 A surge rating and low 20 Ω ZZ enable fast, repeatable clamping without thermal runaway. |
| Test Equipment Calibration Source | Automotive Battery Monitoring |
Use Scenario: Precision voltage reference in handheld multimeter front-end circuitry. IC Role / Device Role / Timing Role: Primary regulation element establishing known voltage threshold for ADC reference scaling. Use Value: 0.5 μA IR at 32.7 V minimizes loading error on high-impedance reference dividers. |
Use Scenario: Monitoring 42 V auxiliary battery in commercial vehicle start-stop systems. IC Role / Device Role / Timing Role: Overvoltage detector triggering shutdown when battery exceeds safe threshold. Use Value: –65 °C to +150 °C operating range matches under-hood environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B/TR8 | ±5% VZ tolerance (vs. ±10%); identical VZ nominal, IZT, ZZ, and package | Higher accuracy required in feedback loops where tighter regulation reduces output error | Select when system demands <±5% reference stability; same thermal and surge specs apply |
| MMBZ5267ET1G | Surface-mount SOT-23 package; 43 V ±5%, 20 mA IZT, 30 Ω ZZ, 500 mW rating | Used in space-constrained, high-density PCBs where axial leads are impractical | Choose for automated SMT assembly; not interchangeable due to power rating and package mismatch |
Compared with 1N5367A/TR8, the 1N5367B/TR8 offers improved voltage accuracy without layout or thermal changes, while MMBZ5267ET1G provides surface-mount compatibility at reduced power handling-neither is pin-compatible, but both serve overlapping regulation roles in different form factors.
Availability
1N5367A/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and test equipment calibration requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1N5367A/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 1N53xx series was designed specifically for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standardized manufacturability.
FAQ
What is the Zener voltage tolerance of the 1N5367A/TR8?
The 1N5367A/TR8 has a nominal Zener voltage of 43 V with ±10% tolerance, meaning its actual regulation voltage falls between 38.7 V and 47.3 V when tested at 30 mA (IZT) and 25 °C. This tolerance is defined by the "A" suffix per Microsemi's documentation and applies across the full operating temperature range of –65 °C to +150 °C.
Can the 1N5367A/TR8 be used in surface-mount designs?
No, the 1N5367A/TR8 is an axial-leaded T-18 package device and is not suitable for surface-mount assembly. For SMT equivalents, consider Microsemi's SMBJ5367B or ON Semiconductor's MMBZ5267ET1G-both rated for 43 V but differ in power rating, package, and thermal performance. The 1N5367A/TR8 requires through-hole mounting with ≥10 mm lead length for full 5 W dissipation.
What is the maximum surge current rating for the 1N5367A/TR8?
The 1N5367A/TR8 is rated for a non-repetitive peak surge current (IZSM) of 190 A, specified for an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure, making it suitable for clamping applications in industrial power systems where line surges occur. Derating applies for repeated surges or elevated ambient temperatures.
How does the thermal resistance of the 1N5367A/TR8 affect PCB layout?
The 1N5367A/TR8 has a junction-to-lead thermal resistance of 25 °C/W when leads are trimmed to 10 mm from the body. To achieve full 5 W power dissipation, PCB layout must maintain this lead length and avoid excessive copper pour near the body that impedes convection. On FR4 with 4 mm² pads, junction-to-ambient resistance rises to 85 °C/W, limiting steady-state power to ~1.47 W unless additional heatsinking is applied.
Is the 1N5367A/TR8 RoHS compliant?
Yes, the 1N5367A/TR8 is RoHS compliant, as confirmed by the "e3" suffix in Microsemi's official documentation. Its leads feature annealed matte-tin plating compliant with RoHS Directive 2011/65/EU, and its void-free thermosetting epoxy case meets UL94V-0 flammability standards. No exemptions are required for lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE content.
1N5367A/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:
- ±10%
- 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
1N5367A/TR8 FAQ
1.How can I place an order for 1N5367A/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367A/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 1N5367A/TR8 reliable?
The price and inventory of 1N5367A/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367A/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5367A/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367A/TR8 transactions.
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4.How is shipping managed for 1N5367A/TR8?
1N5367A/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367A/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 1N5367A/TR8?
For technical support, including 1N5367A/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367A/TR8 requirements.
6.How does Aetrix verify that 1N5367A/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5367A/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 1N5367A/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5367A/TR8?
All 1N5367A/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367A/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 1N5367A/TR8 part is unused and in its original packaging.
Return procedure for 1N5367A/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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