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Microchip Technology 1N5359BE3/TR12
- Part No.:
- 1N5359BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359BE3/TR12.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,646
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Product details
Overview
1N5359BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 24 V, ±5% tolerance (B suffix), 3.5 Ω dynamic impedance at 50 mA test current, and maximum reverse leakage of 0.5 μA at 19.4 V. It operates from –65°C to +150°C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5359BE3/TR12 datasheet, 1N5359BE3/TR12 pinout, 1N5359BE3/TR12 application, or 1N5359BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (100 A), voltage regulation (ΔVZ = 0.55 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-biased breakdown mode. Its Zener voltage is specified at 24 V ±5% under 50 mA DC test current (IZT), with dynamic impedance measured at 1 kHz AC superimposed on IZT.
The 1N5359BE3/TR12 exhibits low voltage regulation (ΔVZ = 0.55 V between 10% and 50% of IZM), minimal knee impedance (ZZK = 500 Ω at 1 mA), and high surge capability (100 A peak, 8.3 ms half-sine) - enabling stable regulation across wide current and temperature ranges without external biasing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% at 50 mA - defines precise regulation point for feedback networks |
| Power Dissipation | 5.0 W at TL = 25°C (3/8″ lead length) - requires heatsinking above ambient derating threshold |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT = 50 mA - ensures minimal output voltage variation under load transients |
| Max Reverse Leakage (IR) | 0.5 μA at VR = 19.4 V - guarantees low standby power loss in high-impedance circuits |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - withstands transient overvoltage events without degradation |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ at 10% and 50% of IZM, indicating tight regulation linearity |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design with standard axial mounting |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free UL94V-0 epoxy), cathode indicated by band; leads are RoHS-compliant annealed matte-tin plated per MIL-STD-750 Method 2026.
| 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 end; supplies stable 24 V reference when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB mechanical and electrical definitions for interchangeability |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - safe for manual handling and standard SMT lines |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with matte-tin plating - no lead or hazardous substances |
| High surge endurance | Rated for 100 A non-recurrent surge (8.3 ms) - protects downstream circuitry during line transients |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler feedback network. IC Role / Device Role / Timing Role: Zener reference element setting precise 24 V threshold for TL431 or optocoupler LED drive. Use Value: Tight ΔVZ (0.55 V) and low ZZ (3.5 Ω) maintain <±1% output regulation across 10–100% load range. | Use Scenario: Provides stable excitation voltage for 4–20 mA current-loop pressure transducers. IC Role / Device Role / Timing Role: Precision shunt reference supplying constant 24 V to sensor bridge and signal conditioning ICs. Use Value: 0.5 μA IR at 19.4 V minimizes error contribution in high-impedance Wheatstone bridge interfaces. |
| Overvoltage Protection Clamp | Programmable Logic Controller Input Protection |
Use Scenario: Clamps induced surges on 24 V DC control bus in factory automation systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across bus rails to limit spikes to ≤24.6 V. Use Value: 100 A surge rating absorbs IEC 61000-4-5 Level 4 surges without failure or parameter shift. | Use Scenario: Protects digital input channels of PLC modules against field-wiring faults and ESD. IC Role / Device Role / Timing Role: Shunt clamp on 24 V input line, diverting fault current away from input buffer ICs. Use Value: Low thermal resistance (25 °C/W) enables reliable operation at 5 W dissipation during sustained overvoltage events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | No TR12 tape-and-reel packaging; same electrical specs and T-18 package | Not optimized for automated pick-and-place; requires manual or bulk loading | Select 1N5359B only for prototyping or low-volume hand assembly where reel packaging is unnecessary |
| MMSZ5245B-TP | Surface-mount SOD-123 package (200 mW), 24 V ±5%, higher ZZ (30 Ω), lower IZM (100 mA) | Designed for space-constrained PCBs; unsuitable for 5 W continuous dissipation | Choose MMSZ5245B-TP only for low-power signal-level references where board area is critical and power <0.2 W |
Compared with 1N5359B and MMSZ5245B-TP, the 1N5359BE3/TR12 uniquely delivers 5 W power handling in axial-leaded form with tape-and-reel delivery - making it optimal for industrial power supply production where thermal robustness, ESD immunity, and automated assembly converge.
Availability
1N5359BE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage clamping circuits, and programmable logic controller input protection requiring stable component supply and full traceability.
Supply support for 1N5359BE3/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 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems - emphasizing thermal stability, surge resilience, and long-term parametric consistency under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5359BE3/TR12?
The 1N5359BE3/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its regulated voltage falls within 22.8 V to 25.2 V at 50 mA test current and 25°C lead temperature, as confirmed in the official Microsemi datasheet revision D (2008).
Does the 1N5359BE3/TR12 require dry packing before soldering?
No, the 1N5359BE3/TR12 does not require dry packing. It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and assembled without baking or humidity-controlled handling - a direct benefit of its void-free thermosetting epoxy encapsulation.
What is the maximum steady-state power dissipation of the 1N5359BE3/TR12 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz Cu, 4 mm² copper pads, 1 mm track width, 25 mm length), the 1N5359BE3/TR12 has a steady-state power rating of 1.47 W at 25°C ambient temperature. This derated value reflects its 85°C/W junction-to-ambient thermal resistance under those specific board conditions.
Is the 1N5359BE3/TR12 suitable for surge protection applications?
Yes, the 1N5359BE3/TR12 is explicitly rated for surge protection: it supports a non-recurrent peak surge current (IZSM) of 100 A with 8.3 ms half-sine waveform duration. This capability is validated per Microsemi's test methodology and makes it appropriate for clamping transient overvoltages in 24 V industrial control systems.
How is polarity marked on the 1N5359BE3/TR12?
The 1N5359BE3/TR12 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a more positive potential than the anode to operate in Zener breakdown mode. This marking is consistent across all T-18 packaged devices in the 1N53xxB family and aligns with JEDEC standard orientation.
1N5359BE3/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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 17.3 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
1N5359BE3/TR12 FAQ
1.How can I place an order for 1N5359BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359BE3/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 1N5359BE3/TR12 reliable?
The price and inventory of 1N5359BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5359BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5359BE3/TR12?
1N5359BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359BE3/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 1N5359BE3/TR12?
For technical support, including 1N5359BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359BE3/TR12 requirements.
6.How does Aetrix verify that 1N5359BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5359BE3/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 1N5359BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5359BE3/TR12?
All 1N5359BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359BE3/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 1N5359BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5359BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359BE3/TR12 Tags
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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