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Microchip Technology 1N5350AE3/TR12
- Part No.:
- 1N5350AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350AE3/TR12.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,157
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Product details
Overview
1N5350AE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 13 V, ±10% tolerance (A suffix), 100 mA maximum Zener current (IZM), 2.5 Ω dynamic impedance (ZZ), and 1.0 μA reverse leakage at 9.4 V. It operates from –65 °C to +150 °C and is used for voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5350AE3/TR12 datasheet, 1N5350AE3/TR12 pinout, 1N5350AE3/TR12 application, or 1N5350AE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output voltage across wide operating current (100 mA IZM) and temperature ranges. Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation under load changes, and its 25 °C/W junction-to-lead thermal resistance supports reliable operation with standard lead-length heat sinking.
The 1N5350AE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band polarity marking and complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. It is rated for 260 °C soldering (10 s max) and withstands non-recurrent 8.3 ms half-sine surge currents up to 75 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±10% - defines nominal regulation point; high-end limit is 14.3 V for IZM calculation. |
| Test Current (IZT) | 100 mA - current at which VZ is measured; establishes baseline operating point. |
| Dynamic Impedance (ZZ) | 2.5 Ω - small-signal AC resistance; determines voltage stability under current transients. |
| Max Reverse Leakage (IR) | 1.0 μA at 9.4 V - ensures low standby power loss in high-impedance bias networks. |
| Max Zener Current (IZM) | 100 mA - maximum continuous DC current at 25 °C lead temperature; derates linearly above 25 °C. |
| Surge Current (IZSM) | 75 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal design using 3/8″ (10 mm) lead length as heatsink path. |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free thermosetting epoxy, UL94V-0 rated), cathode indicated by color band; leads are annealed matte-tin plated (RoHS compliant, solderable per MIL-STD-750 Method 2026).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse bias applied between cathode and anode to enable regulation. |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node; must be held positive relative to anode during operation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers. |
| ±10% voltage tolerance (A suffix) | Supports cost-sensitive applications where tighter regulation is not required. |
| RoHS-compliant e3 suffix | Meets global environmental compliance requirements without performance trade-off. |
| Level 1 moisture sensitivity | Eliminates need for dry-packaging or bake-out prior to assembly. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for special ESD controls in manufacturing. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback loop via optocoupler-coupled TL431 replacement. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 13 V threshold for error amplifier bias and shunt regulation. Use Value: Maintains ±10% output accuracy across line/load/temperature with 2.5 Ω dynamic impedance limiting ripple-induced drift. | Use Scenario: Protects 12 V rail against input surges in automotive body control module. IC Role / Device Role / Timing Role: Two-terminal shunt clamp absorbing transient energy above 14.3 V (VZ + tolerance). Use Value: Withstands 75 A 8.3 ms surges without degradation, enabling robust protection without active components. |
| Programmable Voltage Reference | DC-DC Converter Bias Network |
Use Scenario: Sets adjustable output voltage in LM317-based lab power supply using resistor divider. IC Role / Device Role / Timing Role: Stable 13 V reference replacing precision IC for coarse adjustment range. Use Value: Delivers <1 μA leakage at 9.4 V, minimizing divider current error and improving setpoint accuracy. | Use Scenario: Provides startup bias to PWM controller in offline AC-DC adapter before auxiliary winding energizes. IC Role / Device Role / Timing Role: High-current (100 mA) Zener supplying initial gate drive or VCC until self-biasing engages. Use Value: Sustains 5 W dissipation at 25 °C lead temp, enabling reliable start-up under worst-case input conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | Same 13 V nominal, but ±5% tolerance (B suffix) and higher IZM (100 mA vs. 100 mA same, but VZM = 13.65 V → IZM recalculated as 5 W / 13.65 V ≈ 366 mA) | Higher precision regulation needed; tighter voltage window required for feedback stability. | Select 1N5350B when ±5% tolerance is mandatory and thermal design supports higher IZM. |
| MMBZ5243B (SOT-23) | Surface-mount, 13 V ±5%, 225 mW PD, 10 Ω ZZ, 100 nA IR - lower power, higher impedance, smaller footprint. | Space-constrained PCBs where axial leads are impractical; low-power biasing only. | Choose MMBZ5243B only for low-current (<20 mA), space-limited designs; not a drop-in replacement. |
Compared with 1N5350B, the 1N5350AE3/TR12 trades voltage precision for cost and simplifies qualification in less demanding regulation roles; versus MMBZ5243B, it delivers 22× higher power handling and lower dynamic impedance but requires axial mounting and larger board area.
Availability
1N5350AE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage references requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for 1N5350AE3/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 for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standardized interchangeability across military and commercial applications.
FAQ
What is the Zener voltage tolerance of the 1N5350AE3/TR12?
The 1N5350AE3/TR12 has a ±10% Zener voltage tolerance, indicated by the "A" suffix in the part number. This means its actual regulation voltage falls between 11.7 V and 14.3 V at the test current of 100 mA and 25 °C lead temperature. The tolerance is confirmed in Microsemi's official datasheet revision D (2008) under Electrical Characteristics and Note 1.
Does the 1N5350AE3/TR12 require dry packing before reflow soldering?
No, the 1N5350AE3/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B Level 1 moisture sensitivity classification, meaning it can be stored and assembled without baking or humidity-controlled packaging. This is explicitly stated in the Features section of the Microsemi datasheet.
What is the maximum surge current rating for the 1N5350AE3/TR12?
The 1N5350AE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 75 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating is specified in the Electrical Characteristics table and supports transient overvoltage clamping in industrial and automotive environments.
How is thermal management handled for the 1N5350AE3/TR12 in high-power operation?
The 1N5350AE3/TR12 relies on junction-to-lead thermal resistance of 25 °C/W, measured at 3/8″ (10 mm) lead length from the body. Effective thermal management requires mounting with adequate copper land area and lead length to dissipate 5 W at 25 °C ambient; derating curves in Figure 1 show linear reduction above that temperature.
Is the 1N5350AE3/TR12 compatible with lead-free soldering processes?
Yes, the 1N5350AE3/TR12 features RoHS-compliant matte-tin plating and is rated for 260 °C for 10 seconds, fully compatible with standard lead-free reflow profiles. The "e3" suffix confirms RoHS compliance, and solderability is verified per MIL-STD-750 Method 2026.
1N5350AE3/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):
- 13 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 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
1N5350AE3/TR12 FAQ
1.How can I place an order for 1N5350AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350AE3/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 1N5350AE3/TR12 reliable?
The price and inventory of 1N5350AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5350AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350AE3/TR12 transactions.
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4.How is shipping managed for 1N5350AE3/TR12?
1N5350AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350AE3/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 1N5350AE3/TR12?
For technical support, including 1N5350AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350AE3/TR12 requirements.
6.How does Aetrix verify that 1N5350AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5350AE3/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 1N5350AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5350AE3/TR12?
All 1N5350AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350AE3/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 1N5350AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5350AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350AE3/TR12 Tags
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