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Microchip Technology 1N5367A/TR12
- Part No.:
- 1N5367A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5367A/TR12.pdf
- Description:
- DIODE ZENER 43V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,953
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Product details
Overview
1N5367A/TR12 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, 20 Ω maximum dynamic impedance at IZT, and 190 mA maximum Zener current (IZM) when adequately heat-sunk. It provides stable voltage reference in power supply regulation and overvoltage protection circuits.
For engineers reviewing the 1N5367A/TR12 datasheet, 1N5367A/TR12 pinout, 1N5367A/TR12 application, or 1N5367A/TR12 equivalent, key selection criteria include its 43 V Zener voltage, ±10% tolerance, 5 W steady-state power rating at TL < 25°C, low thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating.
Technical Context
This device operates as a reverse-biased voltage regulator, maintaining stable output across wide current (10–190 mA) and temperature (–65°C to +150°C) ranges. Its 20 Ω dynamic impedance at 30 mA ensures minimal voltage variation under load changes.
Designed for axial-lead through-hole mounting on FR4 PCBs with 4 mm² copper pads, it delivers 1.47 W at TA = 25°C or full 5 W when lead temperature is maintained below 25°C using 3/8″ (10 mm) lead length from body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±10% - defines precise regulation point for feedback loops and clamp thresholds |
| Test Current (IZT) | 30 mA - operating point where VZ and ZZ are specified; used for calibration and stability verification |
| Dynamic Impedance (ZZ) | 20 Ω max at IZT - low AC resistance ensures tight voltage control under varying load currents |
| Max Zener Current (IZM) | 190 mA - maximum continuous DC current before thermal runaway; requires heatsinking above ~1.47 W |
| Power Dissipation | 5.0 W at TL < 25°C - achievable only with controlled lead temperature; derates linearly above 25°C |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with discrete lead heatsinking, not board-only dissipation |
| Reverse Leakage (IR) | 0.5 μA max at VR = 32.7 V - ensures negligible standby current in high-impedance bias networks |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to circuit ground or lower potential; carries forward current up to 1.0 A (VF ≤ 1.2 V) |
| Cathode | Zener regulation terminal / high-voltage reference node | Banded end; connected to unregulated input or overvoltage rail; maintains 43 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xx mechanical and electrical definitions for interchangeability |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to soldering |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - safe for assembly without special ESD controls |
| High surge current rating | 190 A peak (8.3 ms half-sine) - withstands transient overvoltages in industrial power rails |
| Stable voltage regulation | ΔVZ ≤ 2.8 V (10% to 50% of IZM) - ensures predictable clamping across operating range |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Used in optocoupler-based feedback loop of isolated 48 V DC-DC converter to regulate output within ±3%. IC Role / Device Role / Timing Role: Zener reference providing stable 43 V threshold to drive TL431 shunt regulator or transistor switch. Use Value: Enables accurate secondary-side regulation without auxiliary winding; ±10% tolerance accommodates cost-sensitive BOM while maintaining safety margin. | Use Scenario: Placed across motor drive bus to limit voltage spikes during inductive load switching in factory automation PLC outputs. IC Role / Device Role / Timing Role: Passive overvoltage protection element clamping transients above 47.3 V (43 V × 1.1). Use Value: Absorbs 5 W surges without degradation; 190 A surge rating handles repetitive 100 V/μs transients common in 24 V solenoid drivers. |
| Programmable Voltage Reference | Legacy Equipment Voltage Calibration |
Use Scenario: Paired with precision resistor divider to generate adjustable 5–40 V reference for analog sensor signal conditioning in test equipment. IC Role / Device Role / Timing Role: Primary Zener reference source setting upper bound of programmable output range. Use Value: Low 20 Ω dynamic impedance minimizes loading error; 30 mA IZT supports stable bias for op-amp reference buffers. | Use Scenario: Replacement part in 1990s telecom line card power monitor circuit requiring field-serviceable 43 V reference. IC Role / Device Role / Timing Role: Drop-in mechanical and electrical replacement for obsolete 1N5367A variants in repair depots. Use Value: Axial T-18 package matches original footprint; same marking, polarity band, and solder profile (260°C/10 s) enables direct rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5367B | ±5% tolerance (vs. ±10% for 1N5367A/TR12); identical VZ, IZT, ZZ, IZM, and package | Higher precision required in feedback loops where 43 V ±2.15 V is insufficient; tighter regulation improves system accuracy | Select 1N5367B when voltage stability over temperature and current is critical; same thermal and layout design applies |
| MMBZ5265BS-7-F | Surface-mount SOD-123 package; 43 V ±5%, 100 mW power rating; not a direct replacement for 5 W operation | Only suitable for low-power biasing or signal-level clamping; cannot replace 1N5367A/TR12 in power regulation roles | Choose MMBZ5265BS-7-F only for space-constrained, low-current (<5 mA) applications; requires PCB redesign |
Compared with 1N5367B and MMBZ5265BS-7-F, the 1N5367A/TR12 uniquely balances cost-effective ±10% tolerance with full 5 W dissipation capability in a serviceable axial package-making it optimal for legacy repair, industrial clamping, and medium-power regulation where precision is secondary to robustness.
Availability
1N5367A/TR12 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, and legacy equipment repair requiring stable component supply and long-term obsolescence support.
Supply support for 1N5367A/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, mixed-signal, and RF solutions 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 immunity, and long-term parametric stability over decades of field operation.
FAQ
What is the Zener voltage tolerance of the 1N5367A/TR12?
The 1N5367A/TR12 has a nominal Zener voltage of 43 V with a ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ falls between 38.7 V and 47.3 V at 30 mA test current and 25°C lead temperature. The tolerance directly impacts regulation accuracy in feedback networks and must be accounted for in worst-case design margins.
Can the 1N5367A/TR12 be used in surface-mount designs?
No, the 1N5367A/TR12 is an axial-leaded T-18 package intended for through-hole mounting only. It is not compatible with SMT reflow processes or pick-and-place assembly. For surface-mount equivalents, Microsemi offers the SMBJ5367B or SMBG5367B series-but those are distinct part numbers with different thermal and electrical derating curves than the 1N5367A/TR12.
What is the maximum power dissipation of the 1N5367A/TR12 under standard conditions?
The 1N5367A/TR12 is rated for 5.0 W steady-state power dissipation only when lead temperature (TL) is maintained below 25°C, typically achieved using 3/8″ (10 mm) lead length from the body as a heatsink. On a standard FR4 PCB with 1 oz copper and 4 mm² pads, its usable power drops to 1.47 W at 25°C ambient-requiring careful thermal design to avoid exceeding junction temperature limits.
Does the 1N5367A/TR12 meet RoHS requirements?
Yes, the 1N5367A/TR12 is RoHS compliant, as confirmed by the "e3" designation in Microsemi's official documentation and its matte-tin lead plating per MIL-STD-750 Method 2026. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and requires no dry pack per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity classification.
How does the 1N5367A/TR12 handle surge conditions?
The 1N5367A/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 190 A (peak, 8.3 ms half-sine wave), enabling reliable operation during transient overvoltage events such as inductive kickback or lightning-induced surges. Its robust construction-including void-free epoxy encapsulation and low thermal resistance-ensures repeatable performance without parameter shift after multiple surge exposures, provided average power remains within 5 W limits.
1N5367A/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:
- ±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/TR12 FAQ
1.How can I place an order for 1N5367A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5367A/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 1N5367A/TR12 reliable?
The price and inventory of 1N5367A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5367A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5367A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5367A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5367A/TR12?
1N5367A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5367A/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 1N5367A/TR12?
For technical support, including 1N5367A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5367A/TR12 requirements.
6.How does Aetrix verify that 1N5367A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5367A/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 1N5367A/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5367A/TR12?
All 1N5367A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5367A/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 1N5367A/TR12 part is unused and in its original packaging.
Return procedure for 1N5367A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5367A/TR12 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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