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Microchip Technology 1N5353AE3/TR12
- Part No.:
- 1N5353AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5353AE3/TR12.pdf
- Description:
- DIODE ZENER 16V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,783
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Product details
Overview
1N5353AE3/TR12 from Microsemi is a 16 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications. It delivers 75 mA maximum Zener current (IZM) at 25°C with 2.5 Ω dynamic impedance (ZZ) and operates across –65°C to +150°C.
For engineers reviewing the 1N5353AE3/TR12 datasheet, 1N5353AE3/TR12 pinout, 1N5353AE3/TR12 application, or 1N5353AE3/TR12 equivalent, key selection criteria include its ±10% voltage tolerance (A suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR12), 25 °C/W junction-to-lead thermal resistance, and 1.2 V forward voltage at 1.0 A.
Technical Context
This device functions as a two-terminal voltage reference by operating in reverse breakdown, maintaining stable output voltage under varying load and temperature conditions. Its low dynamic impedance (2.5 Ω) and tight voltage regulation (ΔVZ = 0.30 V) ensure minimal deviation between 10% and 50% of IZM.
The 1N5353AE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5.0 W steady-state dissipation at TL < 25°C (3/8″ lead length), and supports surge currents up to 75 A (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±10% - defines nominal regulation point; high-end tolerance limit is 17.6 V for IZM calculation. |
| Test Current (IZT) | 75 mA - standardized bias point for VZ measurement and impedance characterization. |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures stable regulation against load transients. |
| Max Regulator Current (IZM) | 75 mA - maximum DC current at 25°C with adequate heat sinking (TL < 25°C). |
| Reverse Current (IR) | 1.0 μA @ 11.5 V - leakage threshold confirming sharp knee behavior below regulation voltage. |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead value enables thermal design using 3/8″ lead length as heatsink path. |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - ensures low conduction loss if used in forward-biased clamp or series configuration. |
Pinout & Package
Package: T-18 axial-leaded plastic case per JEDEC DO-41 outline; void-free UL94V-0 epoxy body; cathode indicated by color band; leads plated with RoHS-compliant annealed matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode. |
| Cathode | Regulated output node | Banded end; held at stable VZ above anode; supplies reference voltage to error amplifier or protection circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures mechanical and electrical interchangeability with industry-standard 5 W Zeners (e.g., 1N53xxB series). |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; matte-tin plating ensures solderability without lead-based alloys. |
| Tape-and-reel packaging (TR12) | Standard EIA-296 format - supports automated SMT placement despite axial form factor (requires carrier tape adaptation). |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model discharges without parameter shift - reduces handling controls in production. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides precise 16 V reference to TL431-like shunt regulator or error amplifier input. Use Value: Maintains ±10% output accuracy across line/load/temperature with 2.5 Ω dynamic impedance limiting transient deviation. |
Use Scenario: Clamps rail voltage during load-dump or inductive kick events in automotive ECUs. IC Role / Device Role / Timing Role: Two-terminal shunt protector placed across sensitive 12 V logic rails. Use Value: Absorbs 75 A surge (8.3 ms) without failure while holding clamped voltage ≤17.6 V (VZ max). |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Sets bias point for analog front-end instrumentation amplifiers requiring stable excitation. IC Role / Device Role / Timing Role: Precision DC reference source for ratiometric sensor bridges or ADC references. Use Value: Delivers 16 V ±10% with 0.30 V regulation delta (ΔVZ) across 7.5–37.5 mA operating range. |
Use Scenario: Supplies regulated excitation to RTD or strain-gauge bridges in process control transmitters. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source replacing higher-cost IC references. Use Value: Operates continuously at 75 mA with 25 °C/W thermal resistance enabling passive heatsinking on PCB leads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5353B | Same 16 V rating but ±5% tolerance (B suffix); 2.5 Ω ZZ; identical IZM and thermal specs. | Higher precision regulation needed where tighter VZ tolerance is critical (e.g., metrology-grade references). | Select 1N5353B when ±5% VZ stability outweighs cost premium over 1N5353AE3/TR12. |
| MMBZ5245BS | SOT-23 surface-mount package; 16 V ±5%; 500 mW rating; 15 Ω ZZ; 100 mA IZM derated. | Space-constrained PCBs where axial leads are incompatible with layout or automated assembly flow. | Choose MMBZ5245BS only if board area and mounting method require SMT; not a drop-in replacement. |
Compared with 1N5353B and MMBZ5245BS, the 1N5353AE3/TR12 offers the lowest cost-per-watt solution for through-hole power regulation, balancing ±10% tolerance with robust 5 W surge capability and tape-and-reel compatibility for mixed-technology assembly.
Availability
1N5353AE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable voltage references, and industrial sensor excitation systems requiring stable component supply and long-term obsolescence management.
Supply support for 1N5353AE3/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 1N53xx series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standardized mechanical compatibility.
FAQ
What is the Zener voltage tolerance of the 1N5353AE3/TR12?
The 1N5353AE3/TR12 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in its part number. This means its nominal 16 V regulation point falls within 14.4 V to 17.6 V at 25°C under specified test conditions (IZT = 75 mA). The e3 suffix confirms RoHS compliance, and TR12 indicates tape-and-reel packaging per EIA-296.
Can the 1N5353AE3/TR12 be used in surface-mount designs?
The 1N5353AE3/TR12 is an axial-leaded T-18 (DO-41) device and is not inherently surface-mount compatible. While it can be mounted on SMT boards using through-hole reflow or manual insertion, it requires dedicated pad layouts and hole drilling. For true SMT implementation, consider alternatives like the SMBJ5353B or MMBZ5245BS - neither is a direct replacement for the 1N5353AE3/TR12.
What is the maximum surge current rating for the 1N5353AE3/TR12?
The 1N5353AE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 75 A, defined as the peak of an 8.3 ms half-sine waveform. This rating assumes proper PCB layout with adequate copper mass and thermal relief; actual clamping performance depends on external series impedance and duty cycle. The 1N5353AE3/TR12 maintains structural integrity under this stress without parameter degradation.
How does the thermal resistance of the 1N5353AE3/TR12 affect PCB layout?
The 1N5353AE3/TR12 specifies 25 °C/W junction-to-lead thermal resistance at 3/8″ (10 mm) lead length - meaning PCB traces must extend ≥10 mm from the diode body to act as effective heatsinks. Mounting on FR4 with 4 mm² copper pads yields 85 °C/W junction-to-ambient, so continuous 5 W operation requires forced air or external heatsinking. Layout must avoid thermal bottlenecks near the leads to sustain 1N5353AE3/TR12 reliability.
Is the 1N5353AE3/TR12 suitable for precision reference applications?
The 1N5353AE3/TR12 provides functional voltage reference capability but is not optimized for high-precision use due to its ±10% tolerance and 0.30 V voltage regulation (ΔVZ) across 10–50% of IZM. For applications demanding <±1% stability or low tempco, consider tighter-tolerance variants like 1N5353B (±5%) or integrated references such as REF5016. The 1N5353AE3/TR12 remains appropriate for cost-sensitive, medium-accuracy regulation where its 5 W rating and surge resilience are primary requirements.
1N5353AE3/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):
- 16 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 11.5 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
1N5353AE3/TR12 FAQ
1.How can I place an order for 1N5353AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5353AE3/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 1N5353AE3/TR12 reliable?
The price and inventory of 1N5353AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5353AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5353AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5353AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5353AE3/TR12?
1N5353AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5353AE3/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 1N5353AE3/TR12?
For technical support, including 1N5353AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5353AE3/TR12 requirements.
6.How does Aetrix verify that 1N5353AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5353AE3/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 1N5353AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5353AE3/TR12?
All 1N5353AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5353AE3/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 1N5353AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5353AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5353AE3/TR12 Tags
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BZT52C5V6T-7
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