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Microchip Technology 1N5350AE3/TR8
- Part No.:
- 1N5350AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350AE3/TR8.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,099
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Product details
Overview
1N5350AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 11 V, ±10% tolerance (A suffix), 2.5 Ω maximum dynamic impedance at 125 mA test current, and 8.0 A maximum surge current (8.3 ms half-sine). It operates from –65 °C to +150 °C and is used for primary voltage reference and overvoltage clamping in industrial power supplies.
For engineers reviewing the 1N5350AE3/TR8 datasheet, 1N5350AE3/TR8 pinout, 1N5350AE3/TR8 application, or 1N5350AE3/TR8 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for 11 V Zener regulation in high-reliability DC-DC feedback and transient suppression circuits.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown mode, with specified regulation over 10–50% of IZM (8.0 A) and minimal ΔVZ (0.25 V) across that range. Its 25 °C/W junction-to-lead thermal resistance enables stable 5 W dissipation when leads are mounted ≥10 mm from body.
The 1N5350AE3/TR8 uses a void-free thermosetting epoxy case (UL94V-0), tin-lead or matte-tin plating per MIL-STD-750 Method 2026, and cathode polarity marked by a band. It withstands ESD per MIL-STD-750 Method 1020 and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±10% - defines nominal regulation point under 125 mA test current at 25 °C lead temperature |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - maximum steady-state power with adequate heat sinking at 3/8″ lead length |
| Dynamic Impedance (ZZ) | 2.5 Ω max at IZT = 125 mA - low AC impedance ensures tight voltage regulation under varying load currents |
| Surge Current (IZSM) | 8.0 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Reverse Current (IR) | 5.0 μA max at VR = 8.0 V - confirms sharp knee and low leakage below regulation threshold |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables predictable thermal design with standard axial-lead PCB mounting |
| Operating Temperature | –65 °C to +150 °C - suitable for extended industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), 0.7 g weight, cathode indicated by band. Leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026. Solderable at 260 °C for 10 s max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in Zener mode | Connected to circuit ground or lower potential node during regulation; carries full reverse current in clamp operation |
| Cathode | Zener breakdown terminal / high-voltage side in regulation | Banded end; connected to input rail or voltage source; maintains stable 11 V reference relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N53xx series | Industry-standard footprint and reliability qualification enabling drop-in replacement across legacy designs |
| RoHS-compliant (e3 suffix) | Matte-tin lead finish compliant with EU RoHS Directive 2011/65/EU and compatible with Pb-free assembly processes |
| Level 1 moisture sensitivity | No dry pack or baking required before reflow-reduces manufacturing overhead and handling risk |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly or field service |
| High surge current rating | 8.0 A non-recurrent surge capability provides robust protection against line transients without external TVS |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp for 12 V Rail |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Primary-side Zener reference establishing precise 11 V threshold for TL431 or shunt regulator biasing. Use Value: Maintains ±10% output accuracy across –40 °C to +85 °C ambient with <0.25 V regulation delta from 1.6 A to 4.0 A load steps. |
Use Scenario: Clamping transient spikes on automotive 12 V battery-fed circuits during load dump events. IC Role / Device Role / Timing Role: Passive voltage limiter absorbing energy up to 8.0 A surges without degradation. Use Value: Prevents downstream IC damage by holding rail voltage ≤11.5 V during 8.3 ms transients per ISO 7637-2 Pulse 5a. |
| Programmable Reference for Analog Circuits | Field-Serviceable Voltage Calibration Standard |
Use Scenario: Providing stable 11 V reference for DAC output buffering and ADC input scaling in test equipment. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost IC references where ±10% tolerance is acceptable. Use Value: Delivers <2.5 Ω dynamic impedance at 125 mA, minimizing reference drift under varying analog signal loads. |
Use Scenario: On-board calibration point for handheld multimeters and portable data loggers requiring traceable voltage standards. IC Role / Device Role / Timing Role: Replaceable, field-swappable Zener element with documented VZ and ΔVZ performance. Use Value: Enables recalibration without soldering or component substitution tools-band-marked cathode ensures correct orientation during hot-swap. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | ±5% tolerance (B suffix) vs. ±10% (A); otherwise identical VZ, ZZ, IZM, and package | Higher precision required in feedback loops where 11 V ±0.55 V is insufficient; tighter regulation improves system accuracy | Select 1N5350B when reference stability dominates cost sensitivity and tighter tolerance justifies BOM change |
| MMBZ5242B (SOT-23) | Surface-mount, 0.5 W rating, 10 V nominal, ±5%; not pin-compatible; different thermal profile and surge capability | Used in space-constrained consumer electronics where axial leads are impractical and 8 A surge is unnecessary | Choose MMBZ5242B only for new compact designs accepting reduced power handling and no axial-lead compatibility |
Compared with 1N5350B and MMBZ5242B, the 1N5350AE3/TR8 uniquely balances axial-mount reliability, 5 W power handling, RoHS compliance, and cost-effective ±10% tolerance-making it optimal for industrial power supply replacements and legacy system maintenance where leaded form factor and surge resilience are mandatory.
Availability
1N5350AE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive transient protection circuits, and analog reference subsystems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5350AE3/TR8 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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in mission-critical power systems where thermal stability, surge resilience, and JEDEC-standard form factor are essential.
FAQ
What is the Zener voltage tolerance of the 1N5350AE3/TR8?
The 1N5350AE3/TR8 has a ±10% Zener voltage tolerance, confirmed by the "A" suffix per Microsemi's datasheet revision D. This means its measured VZ falls between 9.9 V and 12.1 V at 125 mA test current and 25 °C lead temperature. The tolerance directly impacts regulation accuracy in feedback networks and must be accounted for in error budgeting for power supply designs using the 1N5350AE3/TR8.
Is the 1N5350AE3/TR8 RoHS compliant?
Yes, the "e3" suffix explicitly denotes RoHS compliance per EU Directive 2011/65/EU. The 1N5350AE3/TR8 uses matte-tin lead plating instead of tin-lead, and its void-free epoxy case meets UL94V-0 flammability requirements. This makes the 1N5350AE3/TR8 suitable for environmentally regulated production without process requalification.
What is the maximum continuous power dissipation for the 1N5350AE3/TR8?
The 1N5350AE3/TR8 is rated for 5.0 W steady-state power dissipation at TL = 25 °C with leads trimmed to 10 mm (3/8″) from the body. Derating is linear at 40 mW/°C above 25 °C lead temperature, per Figure 1 in the Microsemi datasheet. Mounting on FR4 with 4 mm² copper pads reduces effective power to 1.47 W at TA = 25 °C due to higher RθJA.
Does the 1N5350AE3/TR8 have a specified surge current rating?
Yes, the 1N5350AE3/TR8 has a maximum non-recurrent surge current (IZSM) of 8.0 A for an 8.3 ms half-sine waveform, as stated in the Electrical Characteristics table. This rating validates its use in transient voltage suppression applications such as automotive load dump protection, where the 1N5350AE3/TR8 clamps without failure under standardized stress conditions.
How is polarity marked on the 1N5350AE3/TR8?
The cathode of the 1N5350AE3/TR8 is marked by a visible band on the epoxy body. During Zener operation, the banded end must be held at a higher potential than the anode. This marking is consistent across all 1N53xx devices and is critical for correct orientation in feedback and clamp circuits-reversal will cause forward conduction instead of regulation, potentially damaging the 1N5350AE3/TR8 or downstream components.
1N5350AE3/TR8 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/TR8 FAQ
1.How can I place an order for 1N5350AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350AE3/TR8 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/TR8 reliable?
The price and inventory of 1N5350AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5350AE3/TR8?
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4.How is shipping managed for 1N5350AE3/TR8?
1N5350AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350AE3/TR8 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/TR8?
For technical support, including 1N5350AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350AE3/TR8 requirements.
6.How does Aetrix verify that 1N5350AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5350AE3/TR8 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/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5350AE3/TR8?
All 1N5350AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350AE3/TR8, 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/TR8 part is unused and in its original packaging.
Return procedure for 1N5350AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350AE3/TR8 Tags
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