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Microchip Technology 1N5359BE3/TR8
- Part No.:
- 1N5359BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359BE3/TR8.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
1N5359BE3/TR8 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 current 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/TR8 datasheet, 1N5359BE3/TR8 pinout, 1N5359BE3/TR8 application, or 1N5359BE3/TR8 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 in reverse-biased mode, maintaining stable output voltage across wide operating current (IZM = 100 mA) and temperature ranges. Its low dynamic impedance (3.5 Ω) and tight voltage regulation (ΔVZ = 0.55 V) ensure minimal deviation under load transients.
The 1N5359BE3/TR8 uses a void-free thermosetting epoxy T-18 package rated UL94V-0, with cathode indicated by band and leads solderable at 260 °C for 10 s. Thermal resistance is specified at 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±5% - precise regulation point for feedback networks requiring stable 24 V reference |
| Power Dissipation | 5.0 W at 25 °C lead temperature - supports high-current regulation when heat-sunk |
| Test Current (IZT) | 50 mA - standard bias point for measuring VZ and dynamic impedance |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT - low AC impedance ensures minimal voltage shift under varying load current |
| Max Reverse Current (IR) | 0.5 μA at 19.4 V - guarantees low leakage in high-impedance sensing circuits |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic case (UL94V-0 epoxy), cathode identified by color band. Leads are annealed matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse bias applied across anode–cathode |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node; reverse voltage applied relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N53xxB registration | Industry-standard footprint and electrical behavior for drop-in compatibility in legacy designs |
| RoHS-compliant e3 suffix | Lead-free matte-tin plating meets EU RoHS Directive 2011/65/EU and J-STD-609A Class 1 |
| Moisture Sensitivity Level 1 | No dry pack required; safe for standard SMT reflow and manual assembly without baking |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling needed during board assembly |
| High surge current capability | 100 A peak (8.3 ms) enables use in transient suppression without external TVS stacking |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback path via optocoupler interface. IC Role / Device Role / Timing Role: Zener reference element providing stable 24 V threshold for TL431 or optocoupler LED biasing. Use Value: Tight ±5% tolerance and low ΔVZ (0.55 V) minimize output voltage drift across line/load/temperature variations. | Use Scenario: Supplies precise excitation voltage to bridge-based pressure or strain sensors in harsh industrial environments. IC Role / Device Role / Timing Role: Stable 24 V reference source for ratiometric ADC front-end conditioning circuits. Use Value: Low leakage (0.5 μA at 19.4 V) prevents sensor offset error; wide –65 °C to +150 °C operation supports extended temperature deployments. |
| Overvoltage Clamp for 24 V Systems | Programmable Current Source Bias |
Use Scenario: Clamps transient spikes on 24 V DC bus in factory automation controllers to protect downstream logic and drivers. IC Role / Device Role / Timing Role: Shunt regulator absorbing excess energy during load dump or inductive kick events. Use Value: 100 A surge rating handles automotive-style load-dump transients; 5 W steady-state dissipation sustains clamping during sustained overvoltage. | Use Scenario: Sets bias current for constant-current LED drivers or analog current-loop transmitters (e.g., 4–20 mA). IC Role / Device Role / Timing Role: Precision voltage reference establishing ISET in current mirror or op-amp-based current sources. Use Value: 3.5 Ω dynamic impedance ensures stable current setpoint despite supply ripple; ±5% VZ enables <1% current accuracy with appropriate resistor tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B (non-e3, non-TR8) | Same electrical specs but SnPb lead finish and bulk packaging; not RoHS-compliant | Restricted to legacy military/aerospace programs exempt from RoHS | Select only if SnPb solder process and non-tape-and-reel delivery are required |
| MMSZ5242B-TP (Micro Commercial Co.) | Surface-mount SOD-123 package; 24 V ±5%, 500 mW rating; higher ZZ (30 Ω) | Limited to low-power signal-level regulation; unsuitable for >100 mA continuous operation | Choose only for space-constrained PCBs where 5 W dissipation is unnecessary |
Compared with 1N5359B and MMSZ5242B-TP, the 1N5359BE3/TR8 uniquely combines 5 W power handling, axial-leaded through-hole mounting, RoHS compliance, and tape-and-reel delivery-making it optimal for high-reliability industrial power supply production.
Availability
1N5359BE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, factory automation controllers, sensor excitation circuits, and overvoltage protection systems requiring stable component supply and long-term manufacturability.
Supply support for 1N5359BE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized voltage regulation in mission-critical power systems where long-term stability, surge resilience, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5359BE3/TR8?
The 1N5359BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 24 V regulation point falls within 22.8 V to 25.2 V at 25 °C lead temperature, per JEDEC specification and Microsemi's published electrical characteristics table.
Does the 1N5359BE3/TR8 require dry packing before reflow soldering?
No, the 1N5359BE3/TR8 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored and processed under standard ambient conditions without baking prior to soldering-even at 260 °C for 10 seconds.
What is the maximum steady-state power dissipation of the 1N5359BE3/TR8 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper, 4 mm² pads, 1 mm track width, 25 mm length), the 1N5359BE3/TR8 has a steady-state power rating of 1.47 W at 25 °C ambient temperature, based on its 85 °C/W junction-to-ambient thermal resistance.
Can the 1N5359BE3/TR8 be used as a direct replacement for the legacy 1N5359B?
Yes, the 1N5359BE3/TR8 is electrically and mechanically identical to the 1N5359B except for RoHS-compliant matte-tin plating (e3) and tape-and-reel packaging (TR8). All electrical parameters-including VZ, IZM, ZZ, and ΔVZ-match exactly per Microsemi's datasheet Rev D.
What is the surge current rating of the 1N5359BE3/TR8, and how is it defined?
The 1N5359BE3/TR8 has a maximum non-recurrent surge current rating of 100 A, defined as the peak value of an 8.3 ms half-sine waveform per Note 5 in the Microsemi datasheet. This rating validates its use in transient overvoltage suppression without derating for short-duration events.
1N5359BE3/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):
- 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/TR8 FAQ
1.How can I place an order for 1N5359BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359BE3/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 1N5359BE3/TR8 reliable?
The price and inventory of 1N5359BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5359BE3/TR8?
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1N5359BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359BE3/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 1N5359BE3/TR8?
For technical support, including 1N5359BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359BE3/TR8 requirements.
6.How does Aetrix verify that 1N5359BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5359BE3/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 1N5359BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5359BE3/TR8?
All 1N5359BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359BE3/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 1N5359BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5359BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359BE3/TR8 Tags
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