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Microchip Technology 1N5348AE3/TR13
- Part No.:
- 1N5348AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5348AE3/TR13.pdf
- Description:
- DIODE ZENER 11V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,920
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Product details
Overview
1N5348AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a 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 capability. It operates across –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in DC power supplies and analog signal conditioning circuits.
For engineers reviewing the 1N5348AE3/TR13 datasheet, 1N5348AE3/TR13 pinout, 1N5348AE3/TR13 application, or 1N5348AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), steady-state power rating (5 W at TL < 25 °C), reverse leakage current (≤5.0 µA at 8.0 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 mode, with Zener voltage specified at 125 mA (IZT) and measured at lead temperature TL = 25 °C ±8/–2 °C. Its low dynamic impedance (2.5 Ω) ensures stable regulation under varying load currents.
The 1N5348AE3/TR13 exhibits minimal voltage drift versus current - ΔVZ ≤ 0.25 V between 10% and 50% of IZM - and maintains regulation across wide temperature extremes due to its –65 °C to +150 °C operating range and moisture-sensitive level 1 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±10% - defines regulated output voltage under nominal 125 mA test current; supports stable reference in unregulated supply rails. |
| Power Dissipation | 5.0 W at TL < 25 °C - requires ≥10 mm lead length from body for full rating; derates linearly above 25 °C. |
| Dynamic Impedance (ZZ) | 2.5 Ω max @ IZT = 125 mA - low impedance enables tight voltage regulation during transient load changes. |
| Reverse Leakage Current | ≤5.0 µA @ VR = 8.0 V - ensures minimal quiescent power loss in standby or high-impedance bias networks. |
| Surge Current (IZSM) | 8.0 A peak (8.3 ms half-sine) - withstands short-duration transients without degradation in protection circuits. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables direct thermal path to PCB copper or heatsink via axial leads. |
| Operating Temperature | –65 °C to +150 °C - suitable for automotive under-hood, industrial control, and aerospace environments. |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (Void-free UL94V-0 epoxy); cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side | Connected to circuit ground or lower potential node when used in reverse-bias regulation configuration. |
| Cathode | Zener breakdown terminal / regulated output side | Banded end; connected to input rail; delivers stable 11 V reference to load when reverse-biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior, mechanical dimensions, and test methodology across global suppliers. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating; no lead or hazardous substance restrictions impact reliability. |
| Level 1 moisture sensitivity | No dry pack required prior to soldering; compatible with standard reflow and wave processes without bake-out. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020; eliminates need for special handling in assembly lines or field service. |
| High surge current rating | 8.0 A non-recurrent half-sine (8.3 ms) supports robust transient suppression in DC power inputs. |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing unregulated 12–15 V DC rails in industrial PLC power modules where line regulation is poor. IC Role / Device Role / Timing Role: Two-terminal shunt regulator maintaining constant 11 V reference for op-amp biasing and comparator thresholds. Use Value: Delivers ±10% regulation accuracy with 2.5 Ω dynamic impedance, minimizing output variation under ±200 mA load swings. |
Use Scenario: Clamping transient spikes on 12 V automotive sensor supply lines exposed to load-dump events. IC Role / Device Role / Timing Role: Passive crowbar element conducting only above 11 V to divert surge energy to ground. Use Value: Withstands 8.0 A surge (8.3 ms) without parametric shift, preserving downstream IC integrity during ISO 7637-2 pulses. |
| Analog Signal Reference | Temperature-Stable Bias Network |
Use Scenario: Providing fixed 11 V reference for 12-bit ADC voltage dividers in environmental monitoring sensors. IC Role / Device Role / Timing Role: Precision voltage source establishing known scale factor for ratiometric measurements. Use Value: Maintains regulation within ΔVZ ≤ 0.25 V across –40 °C to +85 °C ambient, enabling <0.5% measurement error. |
Use Scenario: Generating stable bias current for discrete transistor amplifiers in telecom line drivers. IC Role / Device Role / Timing Role: Zener-based current source with thermal compensation via series resistor. Use Value: Leverages –65 °C to +150 °C operating range and 25 °C/W thermal resistance to minimize drift over chassis temperature gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5348B | Same 11 V nominal VZ but ±5% tolerance (B suffix) vs. ±10% (A suffix); identical package, power, and thermal specs. | Higher precision required in feedback loops where tighter regulation reduces loop gain error. | Select 1N5348B when system-level voltage accuracy demands <±0.55 V deviation at 11 V. |
| MMBZ5242B (SOT-23) | Surface-mount 10 V Zener, 0.35 W rating, ±5% tolerance; not pin-compatible; different thermal path and surge capability. | Suitable only for low-power, space-constrained PCBs where 5 W dissipation and 8 A surge are unnecessary. | Choose MMBZ5242B only if board area is critical and max continuous current remains below 35 mA. |
Compared with 1N5348B and MMBZ5242B, the 1N5348AE3/TR13 offers optimal balance of cost, axial-mount flexibility, and 5 W power handling for industrial power rail stabilization - neither over-engineered nor under-specified for legacy through-hole designs requiring proven reliability.
Availability
1N5348AE3/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and analog signal reference applications requiring stable component supply and long-term obsolescence management.
Supply support for 1N5348AE3/TR13 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 for ruggedized voltage regulation in harsh-environment systems where long-term stability, surge resilience, and JEDEC-standard interchangeability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5348AE3/TR13?
The 1N5348AE3/TR13 has a Zener voltage tolerance of ±10%, denoted by the "A" suffix in the part number. Its nominal regulation voltage is 11 V, meaning the actual VZ falls between 9.9 V and 12.1 V at 125 mA test current and TL = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 1 of the Microsemi datasheet.
Does the 1N5348AE3/TR13 require dry packing before soldering?
No, the 1N5348AE3/TR13 does not require dry packing prior to soldering. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1 classification, verified in the Features section of the datasheet. This allows standard SMT or through-hole assembly without baking, reducing manufacturing overhead and moisture-related defects.
What is the maximum surge current rating for the 1N5348AE3/TR13?
The 1N5348AE3/TR13 is rated for a maximum non-recurrent surge current (IZSM) of 8.0 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating is explicitly listed in the Electrical Characteristics table and supports transient suppression in automotive and industrial power inputs per ISO 7637-2 requirements.
How is thermal performance specified for the 1N5348AE3/TR13?
Thermal performance of the 1N5348AE3/TR13 is specified as 25 °C/W junction-to-lead (at 3/8″ lead length from body) and 85 °C/W junction-to-ambient on FR4 with defined copper pad geometry. These values appear in the Maximum Ratings section and directly inform heatsinking requirements for sustained 5 W operation.
Is the 1N5348AE3/TR13 RoHS compliant?
Yes, the 1N5348AE3/TR13 is RoHS compliant, as indicated by the "e3" suffix in the part number. The device uses RoHS-compliant annealed matte-tin plating on leads and meets UL94V-0 flammability standards for its epoxy body - both confirmed in the Mechanical and Packaging section of the datasheet.
1N5348AE3/TR13 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):
- 11 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8 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
1N5348AE3/TR13 FAQ
1.How can I place an order for 1N5348AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5348AE3/TR13 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 1N5348AE3/TR13 reliable?
The price and inventory of 1N5348AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5348AE3/TR13 is usually 5 days.
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Once your 1N5348AE3/TR13 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 1N5348AE3/TR13?
For technical support, including 1N5348AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5348AE3/TR13 requirements.
6.How does Aetrix verify that 1N5348AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5348AE3/TR13 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 1N5348AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5348AE3/TR13?
All 1N5348AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5348AE3/TR13, 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 1N5348AE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5348AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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