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Microchip Technology 1N5361AE3/TR12
- Part No.:
- 1N5361AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5361AE3/TR12.pdf
- Description:
- DIODE ZENER 27V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
1N5361AE3/TR12 from Microsemi is a 5 W axial-leaded Zener diode with nominal regulation voltage of 27 V, ±10% tolerance (A suffix), 50 mA test current (IZT), 5.0 Ω dynamic impedance (ZZ), and maximum reverse current of 0.5 μA at 20.1 V (VR). 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 1N5361AE3/TR12 datasheet, 1N5361AE3/TR12 pinout, 1N5361AE3/TR12 application, or 1N5361AE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (120 A), voltage regulation (ΔVZ = 0.60 V), 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, maintaining stable output voltage across wide current (10–120 mA) and temperature (–65 °C to +150 °C) ranges. Its low dynamic impedance (5.0 Ω) and tight voltage regulation (ΔVZ = 0.60 V) ensure minimal deviation under load transients.
The 1N5361AE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5.0 W steady-state dissipation at 25 °C lead temperature and 1.47 W on FR4 PCB. It meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity and withstands 260 °C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±10% - defines nominal regulation point; high-end tolerance limit is 29.7 V for IZM calculation |
| Test Current (IZT) | 50 mA - standardized bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 5.0 Ω - low AC resistance ensures stable voltage under varying load currents |
| Max Reverse Current (IR) | 0.5 μA @ 20.1 V - confirms sharp knee and low leakage below regulation threshold |
| Max Regulator Current (IZM) | 120 mA - maximum DC current at which 5 W dissipation is maintained with adequate heatsinking |
| Voltage Regulation (ΔVZ) | 0.60 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
| Surge Current (IZSM) | 120 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free thermosetting epoxy, UL94V-0), cathode indicated by colored band. Leads are RoHS-compliant annealed matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference/ground terminal | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output terminal | Banded end; held at stable 27 V relative to anode during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB series mechanical and electrical definitions |
| RoHS-compliant plating | Matte-tin termination enables lead-free assembly without compromising solderability or reliability |
| Level 1 moisture sensitivity | No dry pack required; supports standard SMT/reflow handling without baking |
| High surge current rating | 120 A (8.3 ms half-sine) provides robust transient voltage suppression in power rails |
| Low thermal resistance | 25 °C/W junction-to-lead (3/8″ lead length) enables high-power operation with simple heatsinking |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp for DC Bus |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or forward converter auxiliary supplies. IC Role / Device Role / Timing Role: Zener reference diode providing precise 27 V reference for optocoupler-based feedback loop. Use Value: Maintains ±10% regulation over –40 °C to +85 °C ambient, enabling consistent output voltage accuracy without trimming. |
Use Scenario: Protecting 24 V DC bus against load-dump transients in factory automation controllers. IC Role / Device Role / Timing Role: Shunt clamp absorbing energy spikes exceeding 29.7 V (27 V × 1.1). Use Value: Withstands 120 A surge (8.3 ms) without failure, preventing downstream MOSFET or controller damage. |
| Programmable Logic Controller Input Protection | Test Equipment Voltage Calibration Standard |
Use Scenario: Safeguarding digital input circuits against ESD and field-wiring faults in PLC modules. IC Role / Device Role / Timing Role: Low-leakage (0.5 μA) shunt limiter clamping reverse voltage before IC input stage. Use Value: Nonsensitive to ESD per MIL-STD-750 Method 1020 and maintains integrity after repeated 2 kV HBM events. |
Use Scenario: Serving as traceable 27 V reference in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Stable Zener element in temperature-compensated reference divider networks. Use Value: ΔVZ = 0.60 V ensures <2.2% variation across 10–60 mA operating range, supporting 0.1% calibration accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5361B | ±5% tolerance (B suffix) vs. ±10% (A suffix); identical VZ nominal, IZT, ZZ, and package | Higher precision needed for tighter feedback loops or reduced calibration drift | Select 1N5361B when voltage stability over temperature and aging must be improved beyond ±10% |
| MMSZ5261ET1G | Surface-mount SOD-123 package (200 mW), 27 V ±5%, 20 mA IZT, 35 Ω ZZ - not power-compatible | Only suitable for low-power signal-level clamping, not 5 W regulation | Choose MMSZ5261ET1G only for space-constrained PCBs where power dissipation ≤200 mW is acceptable |
Compared with 1N5361B and MMSZ5261ET1G, the 1N5361AE3/TR12 uniquely delivers 5 W axial-leaded regulation at ±10% tolerance with proven surge resilience and industrial temperature range - making it irreplaceable for high-energy clamping and mains-connected reference designs.
Availability
1N5361AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, programmable logic controller (PLC) input protection, and test equipment voltage calibration requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5361AE3/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 for ruggedized voltage regulation in harsh environments - emphasizing thermal robustness, surge immunity, and extended temperature operation over consumer-grade alternatives.
FAQ
What is the Zener voltage tolerance of the 1N5361AE3/TR12?
The 1N5361AE3/TR12 has a ±10% Zener voltage tolerance, denoted by the "A" suffix in its part number. This means its actual regulation voltage falls between 24.3 V and 29.7 V at 50 mA test current and 25 °C lead temperature. The tolerance directly impacts system accuracy in feedback and clamp applications, and must be accounted for in worst-case design margins.
Can the 1N5361AE3/TR12 be used without a heatsink?
The 1N5361AE3/TR12 can dissipate up to 5.0 W only when the lead temperature (TL) is maintained at ≤25 °C - typically requiring a heatsink or ≥3/8″ (10 mm) lead length for thermal conduction. On a standard FR4 board with 1 oz copper, its derated power drops to 1.47 W at 25 °C ambient; sustained 5 W operation without heatsinking will exceed junction temperature limits and cause premature failure.
What does the "e3" and "TR12" suffix indicate in 1N5361AE3/TR12?
The "e3" suffix indicates RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026, ensuring lead-free solderability. The "TR12" denotes tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel - optimized for automated SMT placement despite its axial-leaded form factor.
How is the maximum Zener current (IZM) of 120 mA calculated for the 1N5361AE3/TR12?
The 120 mA IZM for the 1N5361AE3/TR12 is derived from P = VZM × IZM, where P = 5.0 W and VZM = 29.7 V (27 V × 1.1 for ±10% tolerance). Solving gives IZM = 5.0 W / 29.7 V ≈ 120 mA. This value assumes proper heatsinking to maintain TL ≤ 25 °C; operation above this current risks thermal runaway.
Is the 1N5361AE3/TR12 suitable for automotive applications?
The 1N5361AE3/TR12 operates from –65 °C to +150 °C and meets MIL-STD-750 ESD testing, but it is not AEC-Q200 qualified. While used in under-hood industrial controls, it lacks automotive-specific qualification documentation. For automotive ECUs, consider AEC-Q200-certified alternatives unless full qualification testing is performed per vehicle OEM requirements.
1N5361AE3/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):
- 27 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 19.4 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
1N5361AE3/TR12 FAQ
1.How can I place an order for 1N5361AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5361AE3/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 1N5361AE3/TR12 reliable?
The price and inventory of 1N5361AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5361AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5361AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5361AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5361AE3/TR12?
1N5361AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5361AE3/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 1N5361AE3/TR12?
For technical support, including 1N5361AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5361AE3/TR12 requirements.
6.How does Aetrix verify that 1N5361AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5361AE3/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 1N5361AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5361AE3/TR12?
All 1N5361AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5361AE3/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 1N5361AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5361AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5361AE3/TR12 Tags
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