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Microchip Technology 1N5366AE3/TR12
- Part No.:
- 1N5366AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5366AE3/TR12.pdf
- Description:
- DIODE ZENER 39V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,280
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Product details
Overview
1N5366AE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 39 V, ±10% tolerance (A suffix), 30 mA test current, and 14 Ω dynamic impedance at IZT. 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 1N5366AE3/TR12 datasheet, 1N5366AE3/TR12 pinout, 1N5366AE3/TR12 application, or 1N5366AE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, maximum surge current (170 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown. Its Zener voltage is specified at 39 V ±10% under 30 mA DC test current, with dynamic impedance of 14 Ω measured at 1 kHz with 10% AC ripple superimposed on IZT.
Voltage regulation (ΔVZ) is 3.1 V - defined as the difference between voltages measured at 10% and 50% of maximum Zener current (IZM = 170 mA). It exhibits low thermal resistance (25 °C/W) when leads are held at 3/8″ (10 mm) from body, enabling stable regulation under high-current transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±10% - defines nominal regulation point; actual range 35.1–42.9 V at 30 mA |
| Test Current (IZT) | 30 mA - standardized DC bias for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 14 Ω - small-signal AC resistance at 1 kHz; determines load regulation sensitivity |
| Max Surge Current (IZSM) | 170 A - peak non-repetitive half-sine (8.3 ms); supports transient overvoltage clamping |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - derates linearly above 25 °C with 25 °C/W thermal resistance |
| Reverse Leakage (IR) | 0.5 μA max at 29.7 V - ensures minimal quiescent current in standby regulation circuits |
| Voltage Regulation (ΔVZ) | 3.1 V - variation between 10% and 50% of IZM; quantifies regulation linearity across operating range |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by band. Leads are annealed matte-tin plated per MIL-STD-750 Method 2026, RoHS compliant (e3 suffix), weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; maintained at VZ above anode during breakdown; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures mechanical and electrical interchangeability across qualified suppliers and legacy designs |
| Moisture Sensitivity Level 1 | No dry pack required; compatible with standard SMT reflow and manual assembly without baking |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling in production and field service environments |
| High surge current rating (170 A) | Provides robust transient suppression in industrial power rails without external crowbar devices |
| Stable regulation over −65 °C to +150 °C | Supports operation in extended-temperature automotive and aerospace power conditioning modules |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Precision 39 V reference in isolated DC-DC converter feedback loop. IC Role / Device Role / Timing Role: Zener diode provides stable voltage reference for optocoupler-based error amplifier. Use Value: ±10% tolerance and 14 Ω ZZ enable <1% output voltage drift across load and temperature variations. | Use Scenario: Clamping transient spikes on 24 V DC control bus in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Shunts excess energy to ground during inductive kickback or lightning-induced surges. Use Value: 170 A surge rating and 3.1 V ΔVZ ensure reliable clamping without thermal runaway up to 8.3 ms events. |
| Programmable Logic Controller (PLC) Input Protection | Test Equipment Voltage Calibration Standard |
Use Scenario: Reverse-polarity and overvoltage protection for 36–42 V sensor input channels. IC Role / Device Role / Timing Role: Front-end Zener limits input voltage to safe levels before signal conditioning circuitry. Use Value: 39 V nominal VZ aligns with 40 V system margin; 0.5 μA leakage minimizes loading on high-impedance sensor sources. | Use Scenario: Stable reference source in benchtop multimeter calibration circuitry. IC Role / Device Role / Timing Role: Provides traceable 39 V reference point for analog front-end gain/offset adjustment. Use Value: Low ΔVZ (3.1 V) and tight thermal resistance (25 °C/W) reduce calibration drift during warm-up cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5366B | ±5% tolerance (vs. ±10% for 1N5366AE3/TR12); same VZ, IZT, ZZ, and package | Higher precision required in feedback loops where tighter output voltage stability is critical | Select 1N5366B when regulation accuracy dominates cost or availability constraints |
| MMBZ5265BS-7-F | Surface-mount SOD-123 package; 39 V ±5%; 200 mW rating (vs. 5 W); 30 Ω ZZ | Low-power portable electronics where board space and thermal mass limit use of axial devices | Choose MMBZ5265BS-7-F only for space-constrained, low-current (<50 mA) applications - not a drop-in replacement |
Compared with 1N5366B and MMBZ5265BS-7-F, the 1N5366AE3/TR12 delivers higher power handling (5 W vs. 0.2 W), superior surge immunity (170 A vs. ~1 A), and axial-leaded mechanical robustness - making it optimal for industrial power regulation where reliability under thermal and electrical stress is prioritized over miniaturization.
Availability
1N5366AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supply reference, overvoltage protection clamp, and PLC input protection requiring stable component supply and long-term obsolescence management.
Supply support for 1N5366AE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems - emphasizing thermal stability, surge resilience, and JEDEC-standardized form factor compatibility.
FAQ
What is the Zener voltage tolerance for 1N5366AE3/TR12?
The 1N5366AE3/TR12 has a Zener voltage tolerance of ±10%, as indicated by the "A" suffix in its part number. This means its regulated voltage falls within 35.1 V to 42.9 V when measured at the specified 30 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging per EIA-296 standards.
Can 1N5366AE3/TR12 be used in surface-mount designs?
No, the 1N5366AE3/TR12 is an axial-leaded T-18 package device and is not compatible with surface-mount assembly processes. For SMT equivalents, Microsemi offers the SMBJ5366B (DO-214AB) and SMBG5366B (DO-214AA) variants - but these require PCB layout changes and thermal validation due to differing thermal resistance and mounting geometry compared to the axial 1N5366AE3/TR12.
What is the maximum steady-state power dissipation for 1N5366AE3/TR12 at ambient temperature?
When mounted on a standard FR4 PCB (1 oz Cu, 4 mm² copper pads), the 1N5366AE3/TR12 has a steady-state power rating of 1.47 W at 25 °C ambient. This derates linearly above 25 °C at 11.8 mW/°C, based on its 85 °C/W junction-to-ambient thermal resistance - significantly lower than its 5 W rating at 25 °C lead temperature, which assumes active heat sinking.
How does the voltage regulation (ΔVZ) specification impact circuit design with 1N5366AE3/TR12?
The 3.1 V ΔVZ specification for 1N5366AE3/TR12 - defined as the voltage difference between 10% and 50% of IZM (170 mA) - directly affects load regulation performance. In practice, this means output voltage can vary up to ±1.55 V across the usable current range, requiring designers to verify that downstream circuitry tolerates this swing or implement current-limiting or buffering stages to maintain stability.
Is 1N5366AE3/TR12 suitable for automotive under-hood applications?
Yes, the 1N5366AE3/TR12 is rated for operation from −65 °C to +150 °C and features moisture sensitivity level 1 (no dry pack required), making it suitable for under-hood automotive applications. However, its axial T-18 package requires mechanical retention and vibration-resistant mounting; designers must validate solder joint reliability and thermal cycling performance per AEC-Q200 when deployed in engine control units or battery management interfaces.
1N5366AE3/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):
- 39 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 28.1 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
1N5366AE3/TR12 FAQ
1.How can I place an order for 1N5366AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5366AE3/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 1N5366AE3/TR12 reliable?
The price and inventory of 1N5366AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5366AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5366AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5366AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5366AE3/TR12?
1N5366AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5366AE3/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 1N5366AE3/TR12?
For technical support, including 1N5366AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5366AE3/TR12 requirements.
6.How does Aetrix verify that 1N5366AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5366AE3/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 1N5366AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5366AE3/TR12?
All 1N5366AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5366AE3/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 1N5366AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5366AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5366AE3/TR12 Tags
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