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Microchip Technology 1N5367/TR8
- Part No.:
- 1N5367/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367/TR8.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,571
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Product details
Overview
1N5367/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal zener voltage of 43 V, ±5% tolerance (B suffix), 30 mA test current, 20 Ω maximum dynamic impedance at IZT, and 190 mA maximum zener current (IZM) when adequately heat-sunk. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and precision reference applications across industrial and aerospace systems.
For engineers reviewing the 1N5367/TR8 datasheet, 1N5367/TR8 pinout, 1N5367/TR8 application, or 1N5367/TR8 equivalent, key selection criteria include its 43 V regulation point, 5 W steady-state power rating at 25 °C lead temperature, low 2.8 V voltage regulation (ΔVZ) across 10–50% IZM, RoHS-compliant matte-tin plating, and T-18 axial package compatibility with through-hole PCB assembly.
Technical Context
This discrete Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across wide current (30 mA to 190 mA) and temperature (−65 °C to +150 °C) ranges. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with 3/8″ (10 mm) lead length from body.
It features 0.5 μA maximum reverse leakage at 32.7 V (VR = 0.75 × VZ), 110 Ω maximum dynamic knee impedance (ZZK) at 1 mA, and 2.8 V maximum voltage regulation (ΔVZ) - confirming tight regulation stability under varying load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±5% at 30 mA - defines precise regulation point for feedback or clamping |
| Power Dissipation | 5.0 W at TL = 25 °C - requires minimum 3/8″ lead length for full rating |
| Dynamic Impedance (ZZ) | 20 Ω max at IZT = 30 mA - ensures minimal output voltage variation with current changes |
| Max Reverse Leakage (IR) | 0.5 μA at 32.7 V - guarantees low standby power loss in high-impedance bias networks |
| Voltage Regulation (ΔVZ) | 2.8 V max (10% to 50% IZM) - quantifies regulation linearity across operating range |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal design with standard lead-forming and board layout |
| Surge Current (IZSM) | 190 A peak (8.3 ms half-sine) - supports transient overvoltage suppression without failure |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-41 outline; cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to system ground or lower-potential rail during regulation |
| Cathode | Zener voltage output node | Banded end; connects to regulated voltage rail or error amplifier input |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Industry-standard reliability and interchangeability in legacy and new designs |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Robust handling in manufacturing without special static control beyond standard practices |
| High surge current rating (190 A) | Withstands lightning-induced transients and inductive switching spikes without degradation |
| e3 RoHS-compliant marking | Meets EU RoHS Directive 2011/65/EU with lead-free matte-tin plating |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage reference providing stable 43 V threshold for error signal generation. Use Value: Enables ±1% output regulation accuracy with minimal drift over −40 °C to +105 °C ambient. |
Use Scenario: Clamps DC bus voltage during regenerative braking or load dump events in motor drives. IC Role / Device Role / Timing Role: Shunt protection element diverting excess energy to ground above 43 V threshold. Use Value: Limits peak voltage to safe levels for downstream MOSFETs and controllers without crowbar action. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Provides stable excitation voltage for precision RTD or bridge sensor interfaces requiring low-drift reference. IC Role / Device Role / Timing Role: Low-noise, low-impedance voltage source replacing higher-cost IC references where 5% tolerance is acceptable. Use Value: Delivers 43 V reference with <2.8 V regulation delta across 30–95 mA load, reducing calibration complexity. |
Use Scenario: Supplies constant-voltage bias to 4–20 mA transmitter front-end circuitry in hazardous-area instrumentation. IC Role / Device Role / Timing Role: Stable shunt regulator maintaining excitation rail despite supply ripple and load transients. Use Value: Ensures sensor output linearity and long-term stability in Class I Div 1 environments with wide temperature swings. |
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 | Same 43 V ±5%, but in bulk (non-tape-and-reel) packaging; identical electrical specs and T-18 package | No reel logistics support; suitable for prototyping or low-volume hand assembly | Select 1N5367/TR8 for automated SMT-compatible pick-and-place; choose 1N5367B for bench testing or small-batch builds |
| MMSZ5269B-TP | Surface-mount SOD-123 package; 43 V ±5%; 500 mW rating (vs. 5 W); 100 Ω ZZ; 100 mA IZM | Not suitable for high-power regulation; limited thermal mass prevents sustained 5 W operation | Use MMSZ5269B-TP only in space-constrained, low-current (<50 mA) applications where board area outweighs power capability |
Compared with 1N5367/TR8, 1N5367B offers identical performance in non-reel form, while MMSZ5269B-TP trades 10× lower power handling and different thermal behavior for surface-mount compatibility - making 1N5367/TR8 the sole choice for robust 5 W axial-leaded regulation.
Availability
1N5367/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable voltage references, and industrial sensor excitation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1N5367/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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems where long-term stability, surge resilience, and JEDEC-standard interchangeability are critical.
FAQ
What is the zener voltage tolerance of the 1N5367/TR8?
The 1N5367/TR8 has a ±5% zener voltage tolerance, confirmed by the "B" suffix in its part number per Microsemi's documentation. This means its measured VZ falls between 40.85 V and 45.15 V at 30 mA test current and 25 °C lead temperature. The tolerance is guaranteed across the full operating temperature range of −65 °C to +150 °C, and applies to every unit shipped as 1N5367/TR8.
Can the 1N5367/TR8 be used without a heatsink?
Yes, the 1N5367/TR8 can operate at full 5 W power dissipation without an external heatsink when mounted with 3/8″ (10 mm) lead length from the body - its 25 °C/W junction-to-lead thermal resistance enables this. However, if leads are shorter or ambient temperature exceeds 25 °C, derating per Figure 1 in the datasheet is required. On FR4 PCB with 1 oz copper, its power rating drops to 1.47 W at 25 °C ambient.
What does the "TR8" suffix mean in 1N5367/TR8?
The "TR8" suffix indicates tape-and-reel packaging per EIA-296 standard, with 8 mm tape width and 1,000 units per reel. This format supports automated pick-and-place assembly. The base device remains electrically and mechanically identical to 1N5367B; only packaging differs. Microsemi specifies TR as the standard tape-and-reel option, and TR8 confirms the 8 mm carrier tape dimension.
Is the 1N5367/TR8 RoHS compliant?
Yes, the 1N5367/TR8 is RoHS compliant, as confirmed by the "e3" designation in Microsemi's official documentation and product markings. It uses annealed matte-tin plating on leads per MIL-STD-750 Method 2026 and contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above EU RoHS thresholds. Compliance is verified per JEDEC J-STD-609A.
How does the voltage regulation (ΔVZ) of 1N5367/TR8 affect circuit accuracy?
The 1N5367/TR8 specifies a maximum ΔVZ of 2.8 V - the difference between voltage measured at 10% and 50% of IZM (190 mA). This directly limits regulation accuracy in variable-load applications: for example, a 30–95 mA operating range yields ≤2.8 V total deviation. Designers use this value to size series resistors and verify that downstream circuitry tolerates this swing without functional impact.
1N5367/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:
- ±20%
- 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
1N5367/TR8 FAQ
1.How can I place an order for 1N5367/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367/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 1N5367/TR8 reliable?
The price and inventory of 1N5367/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5367/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5367/TR8?
1N5367/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367/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 1N5367/TR8?
For technical support, including 1N5367/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367/TR8 requirements.
6.How does Aetrix verify that 1N5367/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5367/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 1N5367/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5367/TR8?
All 1N5367/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367/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 1N5367/TR8 part is unused and in its original packaging.
Return procedure for 1N5367/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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