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Microchip Technology 1N5367BE3/TR8
- Part No.:
- 1N5367BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367BE3/TR8.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,116
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Product details
Overview
1N5367BE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 43 V, ±5% tolerance (B suffix), 20 Ω maximum dynamic impedance at 30 mA test current, and 190 mA maximum Zener current when adequately heat-sunk. It regulates voltage across industrial power supplies and voltage reference circuits operating from −65 °C to +150 °C.
For engineers reviewing the 1N5367BE3/TR8 datasheet, 1N5367BE3/TR8 pinout, 1N5367BE3/TR8 application, or 1N5367BE3/TR8 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for stable 43 V reference design.
Technical Context
This device operates as a two-terminal voltage reference in reverse-bias mode, with cathode indicated by a band and requiring the banded end to be held positive relative to the anode. Its regulation stability relies on low dynamic impedance (20 Ω) and tight voltage regulation (ΔVZ = 2.8 V between 10% and 50% of IZM).
Thermal performance is defined by junction-to-lead resistance of 25 °C/W at 3/8″ lead length, enabling 5 W dissipation at TL < 25 °C; on FR4 board it delivers 1.47 W at TA = 25 °C with specified copper pad geometry. Surge rating is 190 A (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±5% - precise reference point for feedback loops and overvoltage clamping at 43 V nominal. |
| Test Current (IZT) | 30 mA - operating point where VZ and ZZ are specified; sets bias condition for stable regulation. |
| Dynamic Impedance (ZZ) | 20 Ω max - low AC resistance ensures minimal output voltage variation under load transients. |
| Max Zener Current (IZM) | 190 mA - maximum continuous DC current before thermal runaway, assuming adequate heat sinking. |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between VZ measured at 19 mA and 95 mA; quantifies regulation linearity. |
| Surge Current (IZSM) | 190 A (8.3 ms half-sine) - peak non-repetitive surge capability for transient suppression. |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - defines conduction loss during forward-bias fault conditions. |
| Thermal Resistance (RθJL) | 25 °C/W - enables thermal design of lead-mounting layout to maintain junction below 150 °C. |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-201AD; void-free UL94V-0 epoxy body; tin-lead or RoHS-compliant matte-tin plating; cathode identified by band; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias current sink terminal | Connected to lower-potential node; carries full Zener current during regulation. |
| Cathode | Reverse-bias voltage reference terminal | Banded end; held at regulated 43 V output; referenced to system ground or supply return. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Guarantees mechanical and electrical compliance with industry-standard DO-201AD axial package. |
| ±5% voltage tolerance (B suffix) | Reduces calibration overhead in mid-precision reference designs without requiring trimming. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints-ready for standard SMT/reflow or hand-soldering. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands handling without special grounding protocols, reducing assembly-line failure risk. |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation. IC Role / Device Role / Timing Role: Voltage reference element setting output voltage via optocoupler feedback network. Use Value: Maintains ±5% output accuracy across temperature and line/load variations using its 43 V Zener point and 20 Ω dynamic impedance. | Use Scenario: Protecting downstream 48 V telecom circuitry from input surges exceeding 50 V. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground when input exceeds 43 V threshold. Use Value: Absorbs 190 A surge (8.3 ms) without failure, leveraging its rated 5 W steady-state and robust thermal resistance. |
| Programmable Voltage Monitor | High-Temperature Sensor Biasing |
Use Scenario: Setting trip threshold for comparator-based undervoltage lockout in automotive engine control units. IC Role / Device Role / Timing Role: Precision reference input to comparator IC, defining activation voltage level. Use Value: Operates reliably from −65 °C to +150 °C with minimal VZ drift, enabling direct mounting near hot engine components. | Use Scenario: Providing stable bias current to RTD or thermistor signal conditioning circuitry in oil & gas downhole tools. IC Role / Device Role / Timing Role: Constant-current source via series resistor + Zener, delivering predictable excitation. Use Value: Delivers consistent 30 mA test current with <2.8 V regulation error, ensuring repeatable sensor response across wide temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B | No e3 or TR8 suffix - not RoHS-compliant; bulk packaging only. | Lacks tape-and-reel delivery and lead-free finish; unsuitable for automated assembly or EU-market products. | Select only for legacy repair or non-RoHS prototyping where tape-and-reel is unnecessary. |
| MMBZ5265BS-7-F | Surface-mount SOD-123 package; 43 V ±5%; 225 mW rating; 30 Ω ZZ. | Lower power (0.225 W vs. 5 W); limited surge capability; suited for space-constrained low-power logic rails. | Choose only for PCB area-limited consumer electronics where 5 W dissipation is unnecessary. |
Compared with 1N5367B and MMBZ5265BS-7-F, the 1N5367BE3/TR8 uniquely combines 5 W axial-leaded power handling, RoHS compliance, tape-and-reel automation readiness, and MIL-grade thermal robustness - making it the sole option for high-reliability industrial 43 V reference and clamp roles.
Availability
1N5367BE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom overvoltage protection, and high-temperature sensor biasing requiring stable component supply, long-term lifecycle support, and RoHS-compliant procurement.
Supply support for 1N5367BE3/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 voltage regulation in harsh-environment power systems, emphasizing thermal resilience, surge survivability, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5367BE3/TR8?
The 1N5367BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its actual regulation voltage falls within 40.85 V to 45.15 V at 30 mA test current and 25 °C lead temperature. The tolerance remains valid across its full operating temperature range of −65 °C to +150 °C, as confirmed in Microsemi's official datasheet revision D.
Can the 1N5367BE3/TR8 be used in surface-mount designs?
No, the 1N5367BE3/TR8 is an axial-leaded T-18 (DO-201AD) package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5367B or SMBG5367B in SMB/SMBG packages - but these differ in thermal performance, surge rating, and footprint. The 1N5367BE3/TR8 requires through-hole mounting with ≥10 mm lead length for rated 5 W operation.
What is the maximum power dissipation of the 1N5367BE3/TR8 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper) with 4 mm² copper pads and 1 mm track width × 25 mm length, the 1N5367BE3/TR8 has a thermal resistance of 85 °C/W and a steady-state power rating of 1.47 W at 25 °C ambient. Exceeding this requires forced air cooling, larger copper areas, or external heatsinking to avoid junction temperature exceedance.
Does the 1N5367BE3/TR8 meet RoHS requirements?
Yes, the "e3" suffix explicitly denotes RoHS compliance per EU Directive 2011/65/EU. The 1N5367BE3/TR8 uses RoHS-compliant annealed matte-tin plating on leads and a halogen-free UL94V-0 epoxy body. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is certified for use in environmentally regulated markets.
How is polarity marked on the 1N5367BE3/TR8?
The 1N5367BE3/TR8 uses a single black band to mark the cathode terminal. During operation, the banded end must be held at a higher potential than the unmarked (anode) end to achieve reverse-bias Zener conduction. Forward conduction occurs at ≤1.2 V, but the device is intended exclusively for reverse-bias regulation - incorrect polarity will prevent voltage stabilization.
1N5367BE3/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:
- ±5%
- 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
1N5367BE3/TR8 FAQ
1.How can I place an order for 1N5367BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367BE3/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 1N5367BE3/TR8 reliable?
The price and inventory of 1N5367BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367BE3/TR8 is usually 5 days.
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Once your 1N5367BE3/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 1N5367BE3/TR8?
For technical support, including 1N5367BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367BE3/TR8 requirements.
6.How does Aetrix verify that 1N5367BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5367BE3/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 1N5367BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5367BE3/TR8?
All 1N5367BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367BE3/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 1N5367BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5367BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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