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Microchip Technology 1N5367/TR12
- Part No.:
- 1N5367/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367/TR12.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,376
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Product details
Overview
1N5367/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 43 V, ±5% tolerance (B suffix), 30 mA test current, 20 Ω dynamic impedance at IZT, and maximum Zener current of 190 mA at 25 °C lead temperature. It regulates voltage in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N5367/TR12 datasheet, 1N5367/TR12 pinout, 1N5367/TR12 application, or 1N5367/TR12 equivalent, this page provides verified electrical parameters, thermal derating behavior, JEDEC T-18 package details, and direct alternatives for 43 V/5 W Zener regulation in industrial and embedded systems.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to maintain stable output voltage across a wide current range (10–190 mA). Its 25 °C/W junction-to-lead thermal resistance enables 5 W dissipation with minimal heatsinking when leads are trimmed to 10 mm from body.
It exhibits low voltage regulation (ΔVZ = 2.8 V) between 10% and 50% of IZM, and maintains tight dynamic impedance (ZZ = 20 Ω) at 30 mA test current-critical for precision shunt regulation in feedback loops and clamp circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±5% - stable regulation point for 43 V reference designs |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - supports high-current shunt regulation without forced cooling |
| Test Current (IZT) | 30 mA - defined operating point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 20 Ω at IZT - low AC impedance ensures minimal output voltage variation under load transients |
| Max Zener Current (IZM) | 190 mA - maximum continuous DC current before thermal runaway at rated power |
| Voltage Regulation (ΔVZ) | 2.8 V - difference between VZ at 10% and 50% of IZM, indicating regulation linearity |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables predictable thermal design with standard lead length (10 mm) |
Pinout & Package
JEDEC T-18 axial-leaded plastic package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reverse bias reference ground | Connected to system ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / Voltage reference output | Banded end; connected to regulated node-must be held positive relative to anode during operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% voltage tolerance (B suffix) | Ensures 40.9–45.1 V regulation window without post-manufacturing trimming |
| Moisture Sensitivity Level 1 | No dry pack required-supports standard SMT reflow and manual assembly without baking |
| ESD robustness per MIL-STD-750 Method 1020 | Withstands handling without special ESD controls-reduces manufacturing yield loss |
| High surge current rating (IZSM = 190 A) | Survives 8.3 ms half-sine surges-suitable for transient overvoltage clamping |
| Low knee impedance (ZZK = 110 Ω @ 1 mA) | Maintains regulation even at very low bias currents-enables ultra-low-power standby references |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifier. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 43 V setpoint for error comparator input. Use Value: Enables accurate output regulation within ±5% across temperature and line variations using only passive components. | Use Scenario: Protecting downstream circuitry from transient voltage spikes exceeding 43 V. IC Role / Device Role / Timing Role: Passive clamp element diverting excess energy to ground when input exceeds 43 V. Use Value: Limits peak voltage to 45.1 V (max) during surges, preventing damage to 48 V-rated ICs and MOSFETs. |
| DC Bus Monitor | Programmable Threshold Detector |
Use Scenario: Monitoring 48 V telecom or industrial DC bus for undervoltage/overvoltage alarms. IC Role / Device Role / Timing Role: Zener-based threshold reference feeding comparator input for fault detection. Use Value: Provides stable 43 V trip point independent of supply ripple-reducing false triggers in noisy environments. | Use Scenario: Setting adjustable trip voltage in analog control circuits using resistor divider + Zener. IC Role / Device Role / Timing Role: Fixed-voltage anchor enabling programmable thresholds via scaling resistors. Use Value: Allows precise 43 V reference generation with <2.8 V regulation drift across operating current range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B | No TR12 tape-and-reel packaging; bulk or ammo pack only | Lacks automated placement compatibility; requires manual or vibratory feed handling | Select 1N5367B for prototyping or low-volume hand assembly where reel packaging is unnecessary |
| MMBZ5267B | Surface-mount SOT-23 package; 0.5 W rating; same 43 V/±5% spec | Not drop-in compatible-requires PCB redesign; suited for space-constrained layouts | Choose MMBZ5267B when board area is limited and thermal budget allows ≤0.5 W operation |
Compared with 1N5367/TR12, 1N5367B offers identical electrical performance but lacks tape-and-reel delivery, while MMBZ5267B trades 5 W power handling and axial mounting for miniaturization-making the TR12 version optimal for high-power, through-hole production use.
Availability
1N5367/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and DC bus monitoring applications requiring stable component supply and JEDEC-standard axial Zener performance.
Supply support for 1N5367/TR12 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, high-power voltage regulation in harsh-environment power systems-emphasizing thermal stability, surge resilience, and long-term parametric consistency.
FAQ
What is the Zener voltage tolerance of the 1N5367/TR12?
The 1N5367/TR12 has a ±5% Zener voltage tolerance, confirmed by the "B" suffix in its part number per Microsemi's datasheet. This means its measured VZ falls between 40.9 V and 45.1 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, making the 1N5367/TR12 suitable for industrial-grade reference applications where consistent regulation is critical.
Can the 1N5367/TR12 be used in surface-mount designs?
No-the 1N5367/TR12 uses a JEDEC T-18 axial-leaded package and is not surface-mount compatible. For SMT implementation, Microsemi offers the MMBZ5267B in SOT-23, which shares the same 43 V ±5% specification but is rated for only 0.5 W. Using the 1N5367/TR12 in SMT processes would require adapter hardware or through-hole rework, compromising reliability and thermal performance. Always verify mechanical fit and thermal path before substituting packages.
What is the maximum surge current rating for the 1N5367/TR12?
The 1N5367/TR12 has a maximum non-recurrent surge current (IZSM) of 190 A, specified for an 8.3 ms half-sine waveform. This rating reflects its capability to absorb transient energy without failure-essential for overvoltage clamp applications in power supplies and motor drives. The surge rating assumes proper lead length (10 mm) and ambient conditions per JEDEC standards; exceeding this value or applying repeated surges degrades long-term reliability of the 1N5367/TR12.
How does thermal derating affect the 1N5367/TR12's power handling?
The 1N5367/TR12 delivers 5.0 W only at 25 °C lead temperature (TL). Its power rating decreases linearly above that point at 20 mW/°C due to a thermal resistance of 25 °C/W junction-to-lead. At TL = 75 °C, maximum dissipation drops to 4.0 W. When mounted on FR4 with 1 oz copper, steady-state power falls to 1.47 W at 25 °C ambient-so heatsinking or airflow must be considered for sustained 5 W operation. This derating behavior is documented in Figure 1 of the 1N5367/TR12 datasheet.
Is the 1N5367/TR12 RoHS compliant?
Yes-the "TR12" suffix indicates tape-and-reel packaging, and the base part number includes the "e3" designation per Microsemi documentation, confirming RoHS compliance. The device uses RoHS-compliant matte-tin plating on leads and void-free UL94V-0 epoxy encapsulation. No lead content is present above EU RoHS thresholds, and the 1N5367/TR12 meets JEDEC J-STD-020B moisture sensitivity Level 1-eliminating dry-pack requirements during storage and assembly.
1N5367/TR12 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/TR12 FAQ
1.How can I place an order for 1N5367/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367/TR12 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/TR12 reliable?
The price and inventory of 1N5367/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5367/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5367/TR12?
1N5367/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367/TR12 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/TR12?
For technical support, including 1N5367/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367/TR12 requirements.
6.How does Aetrix verify that 1N5367/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5367/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5367/TR12?
All 1N5367/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N5367/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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