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Microchip Technology 1N5352BE3/TR8
- Part No.:
- 1N5352BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352BE3/TR8.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,769
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Product details
Overview
1N5352BE3/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 1N5352BE3/TR8 datasheet, 1N5352BE3/TR8 pinout, 1N5352BE3/TR8 application, or 1N5352BE3/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.
Technical Context
This device functions as a two-terminal voltage reference by operating in reverse breakdown, maintaining stable output voltage across wide current (10–75 mA) and temperature (–65°C to +150°C) ranges. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with minimal heatsinking when leads are mounted 10 mm from body.
Designed for axial-lead through-hole mounting on FR4 PCBs, it features UL94V-0 void-free epoxy encapsulation, cathode band polarity marking, and 0.7 g mass. The e3/TR8 suffix confirms RoHS compliance and tape-and-reel packaging per EIA-296.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±5% - precise regulation point for feedback or clamping at nominal load |
| Test Current (IZT) | 75 mA - defined operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures minimal voltage shift under varying load current |
| Max Regulator 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 - sustained power handling without derating in lead-temperature-controlled environments |
| Reverse Current (IR) | 1.0 μA @ 10.8 V - leakage threshold confirming stable regulation onset below VZ |
| Voltage Regulation (ΔVZ) | 0.25 V - difference between VZ measured at 10% and 50% of IZM, indicating tight regulation linearity |
Pinout & Package
Package: T-18 axial-leaded plastic case (UL94V-0 epoxy), 0.7 g mass, cathode indicated by band. Leads are annealed matte-tin plated per MIL-STD-750, solderable at 260°C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; held at stable 15 V relative to anode during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB mechanical and electrical definitions for interchangeability |
| ±5% voltage tolerance (B suffix) | Guarantees VZ between 14.25 V and 15.75 V at 75 mA, enabling predictable loop gain in feedback designs |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with matte-tin lead finish, eliminating lead-based solder compatibility concerns |
| Tape-and-reel packaging (TR8) | EIA-296 compliant format supporting automated SMT placement despite axial-lead form factor |
| Moisture sensitivity Level 1 | No dry pack required prior to assembly-reduces handling cost and avoids moisture-related popcorning |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Integrated into the optocoupler feedback path of a 12–24 V DC-DC converter to regulate output within ±1%. IC Role / Device Role / Timing Role: Zener diode providing precise 15 V reference to drive optocoupler LED current proportional to output error. Use Value: 2.5 Ω dynamic impedance minimizes output voltage deviation during transient load steps, improving regulation accuracy. | Use Scenario: Placed across a 12 V automotive microcontroller rail to clamp transients above 15.75 V. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy during load dump events. Use Value: 6.3 A IZM rating enables single-device clamping of 500 W surges (8.3 ms half-sine), reducing need for parallel devices. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Used with a precision resistor divider to generate a stable 5 V reference from a 24 V supply in a PLC analog input module. IC Role / Device Role / Timing Role: Primary voltage reference element establishing calibration baseline for ADC measurements. Use Value: ΔVZ = 0.25 V ensures reference stability across 7.5–37.5 mA operating range, directly improving measurement repeatability. | Use Scenario: Biasing a 4–20 mA current loop transmitter requiring a stable excitation voltage for RTD sensing. IC Role / Device Role / Timing Role: Fixed-voltage source powering Wheatstone bridge circuitry with low thermal drift. Use Value: –65°C to +150°C operating range supports deployment in unheated outdoor enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352BRLG | Same 15 V ±5%, 5 W rating but in bulk packaging (no TR8 tape/reel); identical electrical specs and T-18 package | Preferred for manual prototyping or low-volume hand-soldered builds where reel feeding is unnecessary | Select 1N5352BRLG when automated assembly is not required and cost-per-unit is prioritized over packaging convenience |
| MMBZ5245BS-7-F | Surface-mount SOD-123 package, 15 V ±5%, 0.35 W power rating - not a drop-in replacement due to 14× lower power and different footprint | Suitable only for low-power signal-level references; cannot replace 1N5352BE3/TR8 in 5 W power regulation roles | Choose MMBZ5245BS-7-F only for space-constrained PCBs where thermal load is <350 mW and axial leads are prohibited |
Compared with 1N5352BE3/TR8, 1N5352BRLG offers identical performance in bulk form for non-automated use, while MMBZ5245BS-7-F provides surface-mount compatibility at the cost of 93% lower power handling-making it unsuitable for primary power rail regulation.
Availability
1N5352BE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5352BE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for robust, high-power voltage regulation in harsh-environment power systems-emphasizing thermal resilience, surge immunity, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance for 1N5352BE3/TR8?
The 1N5352BE3/TR8 has a ±5% Zener voltage tolerance, confirmed by the "B" suffix in its part number. This means its nominal 15 V Zener voltage is guaranteed between 14.25 V and 15.75 V when measured at 75 mA test current and 25°C lead temperature. The e3/TR8 suffix does not affect tolerance-it only denotes RoHS compliance and tape-and-reel packaging.
Can 1N5352BE3/TR8 be used in surface-mount designs?
No, the 1N5352BE3/TR8 is an axial-leaded T-18 package intended for through-hole mounting. It is not compatible with SMT reflow processes due to its lead geometry and thermal mass. For surface-mount equivalents, Microsemi offers the SMBJ5352B or SMBG5352B in DO-214AA/DO-214AB packages-but those are distinct part numbers with different ratings and footprints.
What is the maximum surge current rating for 1N5352BE3/TR8?
The 1N5352BE3/TR8 has a maximum non-recurrent surge current (IZSM) of 6.3 A, specified as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper PCB layout with adequate copper area for thermal dissipation and is validated per JEDEC standards. It reflects the device's ability to absorb transient energy without failure during events like load dump or inductive switching.
How does thermal resistance impact 1N5352BE3/TR8 power handling?
The 1N5352BE3/TR8 has a junction-to-lead thermal resistance of 25 °C/W at 10 mm lead length, enabling full 5 W dissipation when lead temperature is maintained below 25°C. On FR4 boards with standard copper pads, junction-to-ambient resistance rises to 85 °C/W, limiting steady-state power to 1.47 W at 25°C ambient-so heatsinking or lead-length optimization is essential for high-power operation.
Is 1N5352BE3/TR8 suitable for precision reference applications?
Yes, the 1N5352BE3/TR8 supports precision reference use via its 2.5 Ω dynamic impedance at 75 mA and 0.25 V voltage regulation (ΔVZ) across 10–50% of IZM. However, it lacks temperature coefficient specs in the provided datasheet-designers requiring <0.01%/°C drift should add external compensation or consider temperature-compensated references like the 1N821 series for metrology-grade stability.
1N5352BE3/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:
- ±5%
- 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
1N5352BE3/TR8 FAQ
1.How can I place an order for 1N5352BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352BE3/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 1N5352BE3/TR8 reliable?
The price and inventory of 1N5352BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5352BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352BE3/TR8 transactions.
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4.How is shipping managed for 1N5352BE3/TR8?
1N5352BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352BE3/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 1N5352BE3/TR8?
For technical support, including 1N5352BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352BE3/TR8 requirements.
6.How does Aetrix verify that 1N5352BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5352BE3/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 1N5352BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5352BE3/TR8?
All 1N5352BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352BE3/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 1N5352BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5352BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352BE3/TR8 Tags
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BZT52C5V6T-7
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MM5Z5V1ST1G
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