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Microchip Technology 1N5359AE3/TR8
- Part No.:
- 1N5359AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359AE3/TR8.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,557
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Product details
Overview
1N5359AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 24 V, ±10% tolerance (A suffix), 50 mA test current, 3.5 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 μA at 19.4 V. It operates from −65 °C to +150 °C and is used for voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5359AE3/TR8 datasheet, 1N5359AE3/TR8 pinout, 1N5359AE3/TR8 application, or 1N5359AE3/TR8 equivalent, this page provides verified electrical parameters, thermal performance data, RoHS-compliant packaging details, and validated alternative parts for industrial power regulation designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with 3/8″ lead length heat sinking, while its 85 °C/W junction-to-ambient rating applies to FR4 PCB mounting with defined copper pad geometry.
The device exhibits minimal voltage regulation drift (ΔVZ = 0.55 V) between 10% and 50% of maximum Zener current (IZM = 100 mA), and maintains low dynamic impedance (ZZ = 3.5 Ω) at 50 mA test current-critical for precision shunt regulation in analog control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±10% - defines nominal regulation point for feedback networks and voltage clamping |
| Test Current (IZT) | 50 mA - operating point where VZ and ZZ are specified; sets minimum bias for stable regulation |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT - determines output voltage variation under changing load current |
| Max Reverse Current (IR) | 0.5 μA at VR = 19.4 V - ensures negligible leakage below knee voltage, preserving efficiency |
| Max Zener Current (IZM) | 100 mA - maximum continuous DC current before thermal runaway; requires heatsinking above ~1.47 W on PCB |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
| Surge Current (IZSM) | 100 A - peak non-repetitive half-sine (8.3 ms) capability for transient overvoltage suppression |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables 5 W operation with simple lead-length heatsinking |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; tape-and-reel per EIA-296 (TR8 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node in shunt regulator | Connected to circuit ground or lower-potential node; carries full load current in shunt configuration |
| Cathode | Zener breakdown terminal / Regulated voltage output node | Banded end; connected to unregulated input via series resistor; supplies stable 24 V to feedback or clamp circuitry |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Industry-standard reliability and interchangeability in legacy and new designs |
| ±10% voltage tolerance (A suffix) | Cost-optimized regulation accuracy suitable for non-critical voltage references |
| Moisture sensitivity Level 1 | No dry pack required; simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Robust handling in standard manufacturing environments without special ESD controls |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; tin-lead alternative available without e3 |
| High surge current rating | 100 A (8.3 ms half-sine) enables standalone transient suppression without external TVS |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback loops using optocoupler-coupled TL431 alternatives. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 24 V threshold to error amplifier input. Use Value: Maintains ±10% output regulation across line/load variations without active IC, reducing BOM cost and failure points. | Use Scenario: Protecting 24 V rail inputs of industrial PLC modules against 100 V transients induced by relay switching or inductive loads. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing energy during surge events exceeding 24 V. Use Value: Withstands 100 A surge (8.3 ms) without degradation, eliminating need for secondary TVS in cost-sensitive designs. |
| DC-DC Converter Output Monitoring | Fieldbus Voltage Regulation |
Use Scenario: Providing local 24 V reference for ADC-based monitoring of 24 V system bus in telecom shelf management units. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric ADC measurement calibration. Use Value: Low ΔVZ (0.55 V) and stable VZ over temperature ensure <±2% measurement error across −40 °C to +85 °C. | Use Scenario: Regulating 24 V supply for RS-485 transceivers and CAN nodes in factory automation networks. IC Role / Device Role / Timing Role: Local shunt regulator maintaining clean 24 V for communication ICs despite shared power rail noise. Use Value: 3.5 Ω ZZ minimizes ripple coupling into signal paths, improving common-mode rejection in noisy plant environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 24 V nominal VZ but ±5% tolerance (B suffix) and 3.5 Ω ZZ at 50 mA | Higher regulation accuracy required for tighter feedback loops or precision references | Select when ±5% VZ tolerance is needed; otherwise 1N5359AE3/TR8 offers lower cost for less critical uses |
| MMBZ5248BS | Surface-mount SOD-123 package, 24 V ±5%, 500 mW rating, 30 Ω ZZ at 20 mA | Space-constrained PCBs requiring automated placement; not suitable for 5 W continuous dissipation | Choose for compact layouts with <1 W average power; use 1N5359AE3/TR8 where axial leads and 5 W thermal capacity are required |
Compared with 1N5359B and MMBZ5248BS, the 1N5359AE3/TR8 delivers higher power handling (5 W vs. 0.5 W) and axial-lead mechanical robustness for high-reliability industrial power rails, while trading tolerance accuracy for cost and thermal margin in non-precision applications.
Availability
1N5359AE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, PLC I/O modules, and telecom DC-DC converters requiring stable component supply with RoHS compliance and tape-and-reel packaging.
Supply support for 1N5359AE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed 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 1N5359AE3/TR8?
The 1N5359AE3/TR8 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 21.6 V and 26.4 V at 50 mA test current and 25 °C. The tolerance is confirmed in Microsemi's official datasheet revision D (2008), Note 1, and applies across the full operating temperature range of −65 °C to +150 °C.
Can the 1N5359AE3/TR8 be used without a heatsink?
The 1N5359AE3/TR8 can dissipate up to 1.47 W continuously without a heatsink when mounted on an FR4 PCB with specified copper pads (4 mm²) and traces (1 mm wide × 25 mm long), per its 85 °C/W junction-to-ambient rating. For full 5 W operation, a 3/8″ (10 mm) lead length from the body is required to achieve the 25 °C/W junction-to-lead thermal resistance-effectively using the lead as a heatsink.
What does the "e3" and "TR8" suffix mean in 1N5359AE3/TR8?
The "e3" suffix indicates RoHS-compliant construction with matte-tin plating, per EU Directive 2011/65/EU. The "TR8" denotes tape-and-reel packaging per EIA-296 standards, with 8 mm tape width and component orientation optimized for automated pick-and-place equipment. Both suffixes are defined in Microsemi's 1N5333B–1N5388B datasheet, Features section and Mechanical and Packaging notes.
How does the 1N5359AE3/TR8 perform under surge conditions?
The 1N5359AE3/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 100 A, defined as a single 8.3 ms half-sine waveform. This capability allows it to absorb transient energy from inductive load switching or lightning-induced surges on 24 V rails without degradation, provided the surge interval allows full thermal recovery-verified per Microsemi's test methodology in Note 5 of the datasheet.
Is the 1N5359AE3/TR8 suitable for automotive applications?
The 1N5359AE3/TR8 operates across −65 °C to +150 °C and meets MIL-PRF-19500 screening levels when ordered with MQ/MX/MV prefixes, but the base 1N5359AE3/TR8 is not AEC-Q200 qualified. It is widely used in industrial and telecom power systems; for automotive use, consult Microchip's qualified equivalents or add appropriate screening prefixes per application requirements.
1N5359AE3/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:
- ±10%
- 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
1N5359AE3/TR8 FAQ
1.How can I place an order for 1N5359AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359AE3/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 1N5359AE3/TR8 reliable?
The price and inventory of 1N5359AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5359AE3/TR8?
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4.How is shipping managed for 1N5359AE3/TR8?
1N5359AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359AE3/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 1N5359AE3/TR8?
For technical support, including 1N5359AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359AE3/TR8 requirements.
6.How does Aetrix verify that 1N5359AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5359AE3/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 1N5359AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5359AE3/TR8?
All 1N5359AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359AE3/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 1N5359AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5359AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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