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Microchip Technology 1N5352E3/TR8
- Part No.:
- 1N5352E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352E3/TR8.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,861
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Product details
Overview
1N5352E3/TR8 from Microsemi is a 15 V, ±5% 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 1N5352E3/TR8 datasheet, 1N5352E3/TR8 pinout, 1N5352E3/TR8 application, or 1N5352E3/TR8 equivalent, key selection criteria include its 15 V nominal Zener voltage, 5 W steady-state power rating at lead temperature <25°C, low 2.5 Ω dynamic impedance at 75 mA test current, and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown. Its regulation performance is defined by Zener voltage (VZ = 15 V), dynamic impedance (ZZ = 2.5 Ω), and voltage regulation (ΔVZ = 0.25 V) measured between 10% and 50% of IZM.
It features a T-18 axial package with cathode band marking, moisture sensitivity level 1 per J-STD-020B, and thermal resistance of 25°C/W junction-to-lead (3/8" lead length) or 85°C/W junction-to-ambient on FR4 board. Forward voltage is ≤1.2 V at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±5% - stable reference point for feedback or clamping at nominal 15 V |
| Power Dissipation | 5.0 W at TL < 25°C - supports high-current regulation with adequate heat sinking |
| Test Current (IZT) | 75 mA - defines operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω - low impedance ensures minimal voltage shift under load variation |
| Max Reverse Current (IR) | 1.0 μA at VR = 10.8 V - tight leakage enables stable regulation near knee voltage |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design using standard axial-lead mounting |
| Operating Temp Range | -65°C to +150°C - suitable for industrial and automotive under-hood environments |
Pinout & Package
T-18 axial-leaded plastic package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased reference terminal | Connected to lower-potential node; current flows into cathode during regulation |
| Cathode | Reverse-biased reference terminal | Banded end; connected to higher-potential node; defines regulated output voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB series mechanical and electrical definitions |
| RoHS-compliant (e3 suffix) | Meets EU RoHS Directive 2011/65/EU with lead-free matte-tin plating |
| Moisture Sensitivity Level 1 | No dry pack required; safe for standard SMT reflow and manual assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling needed |
| High surge current rating | 6.3 A peak non-recurrent half-sine (8.3 ms) - robust against transient overvoltage events |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Primary-side voltage reference establishing precise 15 V threshold for error signal generation. Use Value: Maintains ±5% output accuracy across line/load/temperature with 2.5 Ω dynamic impedance minimizing feedback loop gain variation. | Use Scenario: Clamps transient voltage spikes on DC bus lines in motor drives or industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy above 15 V to protect downstream MOSFETs or controllers. Use Value: Withstands 6.3 A surge current (8.3 ms) and exhibits only 0.25 V regulation shift (ΔVZ) between 7.5 mA and 37.5 mA, ensuring predictable clamping threshold. |
| Precision Reference Generator | Industrial Sensor Excitation |
Use Scenario: Provides stable 15 V bias for op-amp-based instrumentation amplifiers in data acquisition systems. IC Role / Device Role / Timing Role: Low-drift voltage reference source replacing more expensive IC references where moderate accuracy suffices. Use Value: Delivers 15 V ±5% over -65°C to +150°C with 1.0 μA leakage at 10.8 V, enabling low-power, wide-temperature sensor front-ends. | Use Scenario: Supplies excitation voltage to resistive temperature detectors (RTDs) or strain gauges in process control transmitters. IC Role / Device Role / Timing Role: Stable, low-noise DC bias source maintaining constant bridge excitation despite supply ripple. Use Value: 2.5 Ω dynamic impedance minimizes voltage droop under varying bridge current, improving measurement linearity and reducing self-heating errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | Same 15 V ±5%, 5 W rating but non-RoHS tin-lead plating; no e3 suffix | Not compliant with RoHS Directive; requires exemption documentation for EU shipments | Select when legacy tin-lead assembly is mandated and environmental compliance is not required |
| MMBZ5245B | Surface-mount SOT-23 package; 15 V ±5%, 0.35 W power rating; higher ZZ = 17 Ω | Limited to low-power applications; unsuitable for >100 mA regulation or surge suppression | Select for space-constrained PCBs where 5 W dissipation is unnecessary and thermal mass is limited |
Compared with 1N5352B and MMBZ5245B, the 1N5352E3/TR8 uniquely combines RoHS compliance, 5 W axial power handling, and 2.5 Ω dynamic impedance-making it optimal for industrial power regulation where reliability, thermal margin, and regulatory conformance are jointly critical.
Availability
1N5352E3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and precision reference generator designs requiring stable component supply and full RoHS compliance.
Supply support for 1N5352E3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was engineered for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and JEDEC-standardized interchangeability across military and commercial applications.
FAQ
What is the Zener voltage tolerance of the 1N5352E3/TR8?
The 1N5352E3/TR8 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix in its full designation (1N5352B base with e3 RoHS and TR8 tape-and-reel). This means its measured VZ at 75 mA test current falls within 14.25 V to 15.75 V at 25°C lead temperature.
Does the 1N5352E3/TR8 require dry packing before reflow soldering?
No, the 1N5352E3/TR8 does not require dry packing. It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions and subjected to standard reflow profiles without preconditioning.
What is the maximum surge current rating for the 1N5352E3/TR8?
The 1N5352E3/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 6.3 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its capability to absorb transient overvoltage events without degradation when properly mounted.
How does the dynamic impedance of the 1N5352E3/TR8 affect regulation accuracy?
The 1N5352E3/TR8 has a dynamic impedance (ZZ) of 2.5 Ω at 75 mA test current. This low value means that for every 1 mA change in Zener current, the output voltage shifts by only ~2.5 mV-enabling tight regulation in feedback loops and low-drift reference applications.
Is the 1N5352E3/TR8 compatible with lead-free soldering processes?
Yes, the 1N5352E3/TR8 is RoHS-compliant (e3 suffix) with annealed matte-tin plating qualified per MIL-STD-750 Method 2026. It supports lead-free reflow up to 260°C for 10 seconds and is compatible with standard SAC305 and other Pb-free solder alloys.
1N5352E3/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):
- 15 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.8 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
1N5352E3/TR8 FAQ
1.How can I place an order for 1N5352E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352E3/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 1N5352E3/TR8 reliable?
The price and inventory of 1N5352E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5352E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352E3/TR8?
1N5352E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352E3/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 1N5352E3/TR8?
For technical support, including 1N5352E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352E3/TR8 requirements.
6.How does Aetrix verify that 1N5352E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5352E3/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 1N5352E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5352E3/TR8?
All 1N5352E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352E3/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 1N5352E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5352E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352E3/TR8 Tags
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