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Microchip Technology 1N5352E3/TR12
- Part No.:
- 1N5352E3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352E3/TR12.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,109
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Product details
Overview
1N5352E3/TR12 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), exhibits 2.5 Ω dynamic impedance (ZZ) at 100 mA test current, and operates across –65°C to +150°C.
For engineers reviewing the 1N5352E3/TR12 datasheet, 1N5352E3/TR12 pinout, 1N5352E3/TR12 application, or 1N5352E3/TR12 equivalent, key selection criteria include its 15 V nominal Zener voltage with tight ±5% tolerance, 5 W steady-state power rating at lead temperature <25°C, low 2.5 Ω dynamic impedance, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
The 1N5352E3/TR12 functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its Zener voltage is specified at 15 V ±5% under 75 mA DC test current (IZT), with dynamic impedance measured at 1 kHz AC superimposed on IZT.
It features a thermal resistance of 25 °C/W junction-to-lead (at 10 mm lead length) and 85 °C/W junction-to-ambient on FR4 PCB, enabling stable regulation up to 150°C junction temperature when adequately heat-sunk. The cathode is marked by a band, requiring the banded end to be biased positive relative to the anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±5% - precise regulation point for feedback and clamping at nominal load |
| Test Current (IZT) | 75 mA - defined operating point where VZ and ZZ are guaranteed |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures minimal voltage shift under varying load current |
| Max Zener Current (IZM) | 6.3 A - peak DC current capability with adequate heat sinking at TL < 25°C |
| Power Dissipation | 5.0 W at TL < 25°C - supports high-current regulation without derating in lead-mounted configurations |
| Reverse Leakage (IR) | 1.0 μA max at VR = 10.8 V - negligible standby current in high-impedance bias networks |
| Voltage Regulation (ΔVZ) | 0.25 V - difference between VZ at 10% and 50% of IZM, indicating stability across operating range |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; connected to regulated voltage point; must be held at higher potential than 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 Directive 2011/65/EU; matte-tin plating eliminates lead-based solder compatibility issues |
| Moisture Sensitivity Level 1 | No dry pack required; safe for standard SMT reflow and manual assembly without baking |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - withstands handling without special precautions |
| High surge current rating | 18.7 A peak half-sine (8.3 ms) - protects downstream circuitry during transient overvoltage events |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated DC-DC converters to regulate output voltage within ±1%. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier setpoint. Use Value: 2.5 Ω dynamic impedance minimizes output voltage drift across line/load transients. | Use Scenario: Placed across motor driver outputs to clamp inductive kickback spikes above 15 V. IC Role / Device Role / Timing Role: Passive overvoltage protection element absorbing energy during flyback events. Use Value: 6.3 A IZM and 18.7 A surge rating enable reliable single-pulse energy dissipation without failure. |
| Industrial Sensor Reference | Programmable Logic Controller Input Protection |
Use Scenario: Provides stable 15 V reference for 4–20 mA transmitter ICs in harsh factory environments. IC Role / Device Role / Timing Role: Two-terminal shunt reference maintaining accuracy across –40°C to +85°C ambient. Use Value: ±5% tolerance and –65°C to +150°C operating range ensure long-term calibration stability. | Use Scenario: Connected between PLC analog input channel and ground to limit ESD and surge voltages. IC Role / Device Role / Timing Role: Front-end protection device clamping transients before signal conditioning circuitry. Use Value: Low 1.0 μA leakage at 10.8 V prevents loading of high-impedance sensor inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | Same 15 V ±5%, but leaded version without e3 RoHS suffix or TR12 tape-and-reel packaging | Non-RoHS compliant; requires Pb-based solder process; supplied in bulk or ammo pack | Select when legacy Pb-process compatibility or cost-sensitive non-RoHS production is required |
| MMSZ5245B-TP | 15 V ±5%, 500 mW SOD-123 package; 17 Ω ZZ at 20 mA; 100 mA IZM max | Surface-mount only; lower power; unsuitable for >0.5 W continuous dissipation | Select only for space-constrained, low-power designs where board real estate outweighs thermal performance needs |
Compared with 1N5352B and MMSZ5245B-TP, the 1N5352E3/TR12 provides full 5 W power handling in axial-leaded form with RoHS compliance and tape-and-reel delivery-making it optimal for industrial power supplies requiring robust, through-hole mounted regulation with traceable sourcing.
Availability
1N5352E3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and sensor reference designs requiring stable component supply with full RoHS compliance and tape-and-reel packaging.
Supply support for 1N5352E3/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 specifically for ruggedized voltage regulation in high-temperature, high-surge environments-emphasizing thermal robustness, JEDEC standardization, and military-grade screening options.
FAQ
What is the Zener voltage tolerance of the 1N5352E3/TR12?
The 1N5352E3/TR12 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix in its registered family designation (1N5352B). This tolerance applies at 25°C lead temperature with 75 mA test current, and is confirmed in Microsemi's official datasheet revision D (2008).
Does the 1N5352E3/TR12 require dry packing before reflow soldering?
No, the 1N5352E3/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 classification, meaning it is safe for standard reflow profiles-including 260°C for 10 seconds-without prior baking or moisture barrier bag handling.
What is the maximum surge current rating for the 1N5352E3/TR12?
The 1N5352E3/TR12 has a maximum non-recurrent surge current (IZSM) of 18.7 A, specified as the peak value of an 8.3 ms half-sine waveform. This rating enables reliable transient suppression in motor control and power supply applications without degradation.
How is polarity marked on the 1N5352E3/TR12?
The 1N5352E3/TR12 uses a cathode band to indicate polarity: the banded end is the cathode and must be biased positive relative to the unmarked (anode) end. This marking is consistent across all 1N53xxB-series devices and is visible on the molded epoxy body.
What does the "TR12" suffix mean in 1N5352E3/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12 mm tape width and component orientation optimized for automated pick-and-place assembly. The "e3" denotes RoHS-compliant matte-tin plating, making 1N5352E3/TR12 fully compliant with environmental directives.
1N5352E3/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):
- 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/TR12 FAQ
1.How can I place an order for 1N5352E3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352E3/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 1N5352E3/TR12 reliable?
The price and inventory of 1N5352E3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352E3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5352E3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352E3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352E3/TR12?
1N5352E3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352E3/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 1N5352E3/TR12?
For technical support, including 1N5352E3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352E3/TR12 requirements.
6.How does Aetrix verify that 1N5352E3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5352E3/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 1N5352E3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5352E3/TR12?
All 1N5352E3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352E3/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 1N5352E3/TR12 part is unused and in its original packaging.
Return procedure for 1N5352E3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352E3/TR12 Tags
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MM5Z5V1ST1G
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