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Microchip Technology 1N5352BE3/TR12
- Part No.:
- 1N5352BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352BE3/TR12.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,999
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Product details
Overview
1N5352BE3/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) at 25°C with 2.5 Ω dynamic impedance (ZZ) and operates across –65°C to +150°C.
For engineers reviewing the 1N5352BE3/TR12 datasheet, 1N5352BE3/TR12 pinout, 1N5352BE3/TR12 application, or 1N5352BE3/TR12 equivalent, this page provides verified electrical parameters, thermal derating behavior, RoHS-compliant packaging details, and validated alternative parts for industrial power management designs.
Technical Context
This device functions as a two-terminal voltage reference where reverse-biased operation maintains stable 15 V output across 10–50% of IZM (7.5–37.5 mA). Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with 3/8″ lead length heat sinking.
It exhibits 0.25 V voltage regulation (ΔVZ) between 10% and 50% of IZM, confirming tight regulation stability under varying load currents. The cathode band marking and tin-plated leads comply with MIL-STD-750 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±5% at 75 mA test current - defines nominal regulation point with bounded error for feedback accuracy |
| Power Dissipation (Pd) | 5.0 W at TL = 25°C with 3/8″ lead length - sets maximum continuous DC power handling under defined thermal mounting |
| Dynamic Impedance (ZZ) | 2.5 Ω at 75 mA - determines small-signal AC voltage variation under load transients |
| Max Reverse Current (IR) | 1.0 μA at 10.8 V - ensures minimal leakage below knee voltage, critical for low-power standby modes |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal design using lead conduction path, not ambient convection |
| Operating Temperature | –65°C to +150°C - supports deployment in automotive engine compartments and industrial motor drives |
| Surge Current (IZSM) | 6.3 A peak (8.3 ms half-sine) - withstands transient overvoltage events without degradation |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL. Cathode identified by single black band; banded end must be held positive relative to anode during regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; supplies stable 15 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N53xxB series | Industry-standard footprint and electrical behavior enabling drop-in replacement across multiple vendors |
| RoHS-compliant e3 suffix | Lead-free matte-tin plating meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack |
| Low ΔVZ (0.25 V) | Ensures ≤1.7% output variation across 10–50% of rated current-critical for closed-loop regulator stability |
| High surge current rating (6.3 A) | Survives IEC 61000-4-5 line surges without parameter shift or failure |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for handling precautions in assembly |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Primary-side voltage reference establishing precise 15 V setpoint for error amplifier input. Use Value: Maintains ±1.5% output accuracy over temperature and line variations due to low ΔVZ and stable VZ tolerance. |
Use Scenario: Shunts excess energy during input surge events on 12–24 V DC rails in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Two-terminal crowbar element clamping rail voltage to 15 V before downstream IC damage occurs. Use Value: Withstands 6.3 A 8.3 ms surges without degradation, eliminating need for external TVS diodes in cost-sensitive designs. |
| Precision Voltage Reference | DC-DC Converter Biasing |
Use Scenario: Provides stable bias for op-amp comparators in battery management systems requiring accurate cell voltage thresholds. IC Role / Device Role / Timing Role: Low-drift 15 V reference source feeding high-impedance comparator inputs. Use Value: Delivers <1 μA leakage at 10.8 V, minimizing input offset errors and enabling sub-10 mV threshold resolution. |
Use Scenario: Supplies regulated gate drive voltage for high-side N-channel MOSFETs in synchronous buck controllers. IC Role / Device Role / Timing Role: Local 15 V rail generator ensuring consistent VGS for optimal RDS(on) control. Use Value: Supports 75 mA continuous current with 2.5 Ω ZZ, maintaining <37.5 mV droop across full load range. |
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 (non-e3) | Same electrical specs but SnPb lead finish; not RoHS compliant | Restricted to legacy military/aerospace programs requiring tin-lead solder compatibility | Select only if Pb-based assembly process is mandated and exemption applies |
| MMSZ5245B-TP (Micro Commercial) | Surface-mount SOD-123 package; 15 V ±5%, 500 mW rating; higher ZZ (17 Ω) | Limited to low-power signal-level references; unsuitable for >100 mA regulation loads | Choose for space-constrained PCBs where thermal mass and power handling are secondary to footprint |
Compared with 1N5352BE3/TR12, the 1N5352B offers identical regulation performance but lacks RoHS compliance, while MMSZ5245B-TP trades 10× lower power capacity and higher impedance for miniaturization-neither is pin-compatible, and both require layout revision.
Availability
1N5352BE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom DC-DC converters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5352BE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was engineered for robust voltage regulation in harsh environments, emphasizing thermal resilience, surge immunity, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of 1N5352BE3/TR12?
The 1N5352BE3/TR12 has a ±5% Zener voltage tolerance, confirmed by the "B" suffix in its part number per Microsemi's documentation. This means its measured VZ falls between 14.25 V and 15.75 V at 75 mA test current and 25°C lead temperature. This tolerance directly impacts feedback accuracy in regulated power supplies and must be accounted for in error budget calculations for the 1N5352BE3/TR12.
Can 1N5352BE3/TR12 be used without a heatsink?
Yes, the 1N5352BE3/TR12 can operate without an external heatsink at power levels below 1.47 W when mounted on a standard FR4 PCB with 4 mm² copper pads, per its thermal resistance specification of 85°C/W junction-to-ambient. At full 5 W, however, it requires 3/8″ lead length heat sinking to maintain junction temperature within –65°C to +150°C limits. Derating curves in the 1N5352BE3/TR12 datasheet define safe operating area versus ambient temperature.
What does the "e3" and "TR12" suffix mean in 1N5352BE3/TR12?
The "e3" suffix indicates RoHS-compliant matte-tin plating per JEDEC standards, while "TR12" denotes tape-and-reel packaging per EIA-296 with 12,000 units per reel. These suffixes do not affect electrical performance but define environmental compliance and logistics format. Both features are factory-verified for the 1N5352BE3/TR12 and documented in Microsemi's 2008 REV D datasheet.
How does the voltage regulation (ΔVZ) of 1N5352BE3/TR12 impact circuit stability?
The 1N5352BE3/TR12 specifies ΔVZ = 0.25 V-the difference between voltage measured at 10% and 50% of IZM (7.5 mA and 37.5 mA). This low value ensures minimal output variation across operating current changes, directly improving loop stability in feedback-regulated systems. In practice, this allows the 1N5352BE3/TR12 to maintain tighter output tolerances without additional compensation components.
Is 1N5352BE3/TR12 suitable for surge protection applications?
Yes, the 1N5352BE3/TR12 is rated for 6.3 A peak surge current (IZSM) under 8.3 ms half-sine waveform conditions, making it suitable for transient overvoltage clamping in DC power rails. Its ability to absorb surge energy without parameter shift-validated per Microsemi's test methodology-enables use as a primary protection element in industrial controls where cost and reliability are prioritized over response speed. Always verify clamping behavior with actual 1N5352BE3/TR12 waveforms in final design.
1N5352BE3/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:
- ±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/TR12 FAQ
1.How can I place an order for 1N5352BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352BE3/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 1N5352BE3/TR12 reliable?
The price and inventory of 1N5352BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5352BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352BE3/TR12?
1N5352BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352BE3/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 1N5352BE3/TR12?
For technical support, including 1N5352BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352BE3/TR12 requirements.
6.How does Aetrix verify that 1N5352BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5352BE3/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 1N5352BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5352BE3/TR12?
All 1N5352BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352BE3/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 1N5352BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5352BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352BE3/TR12 Tags
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