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Microchip Technology 1N5364A/TR8
- Part No.:
- 1N5364A/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5364A/TR8.pdf
- Description:
- DIODE ZENER 33V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,396
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Product details
Overview
1N5364A/TR8 from Microsemi is a 33 V, ±10% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications requiring stable breakdown under high surge conditions. It delivers 33 V regulation at 40 mA test current with 10 Ω dynamic impedance and supports up to 150 mA maximum Zener current when adequately heat-sunk.
For engineers reviewing the 1N5364A/TR8 datasheet, 1N5364A/TR8 pinout, 1N5364A/TR8 application, or 1N5364A/TR8 equivalent, key selection criteria include its ±10% voltage tolerance (A suffix), 5 W steady-state power rating at 25°C lead temperature, low 10 Ω Zener impedance at 40 mA, and robust 150 mA surge current capability per 8.3 ms half-sine waveform.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 33 V measured at 40 mA (IZT) and 25°C lead temperature. Its regulation performance is defined by ΔVZ = 3.5 V - the difference between voltages at 10% and 50% of IZM - and maintains tight dynamic impedance (ZZ = 10 Ω) across its operating current range.
The 1N5364A/TR8 uses a void-free thermosetting epoxy T-18 package with tin-lead or RoHS-compliant matte-tin plating, rated for -65°C to +150°C operation. Thermal resistance is 25°C/W junction-to-lead (3/8" lead length) and 85°C/W junction-to-ambient on FR4 with specified copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±10% - defines regulated output voltage in shunt regulator configurations |
| Test Current (IZT) | 40 mA - dc current at which VZ is guaranteed; sets bias point for stable regulation |
| Dynamic Impedance (ZZ) | 10 Ω - low ac impedance ensures minimal voltage shift under load transients |
| Max Zener Current (IZM) | 150 mA - maximum continuous dc current before thermal runaway with proper heat sinking |
| Power Dissipation (Pd) | 5.0 W at TL = 25°C - steady-state power handling capacity with 3/8" lead length |
| Voltage Regulation (ΔVZ) | 3.5 V - variation between voltages measured at 15 mA and 75 mA (10%/50% of IZM) |
| Surge Current (IZSM) | 150 A - peak non-repetitive 8.3 ms half-sine current for transient suppression |
| Reverse Leakage (IR) | 0.5 μA max at VR = 25.1 V - ensures minimal quiescent power loss in standby mode |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL standard; cathode indicated by band; moisture sensitivity level 1 (no dry pack required); weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower potential node in shunt regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Banded end; connected to regulated rail; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions and electrical behavior across global supply chain |
| ±10% voltage tolerance (A suffix) | Enables cost-effective regulation where tighter tolerances are not required |
| 5 W power rating with 25°C/W thermal resistance | Supports high-current regulation without external heatsink in leaded mounting |
| Nonsensitive to ESD per MIL-STD-750 Method 1020 | Reduces handling precautions and eliminates need for ESD-protected assembly lines |
| RoHS-compliant option (e3 suffix) | Meets environmental compliance requirements without derating or performance trade-off |
| Tape-and-reel packaging (TR8) | Enables automated SMT placement compatibility despite axial-leaded form factor |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters using optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference providing precise 33 V threshold for TL431-type shunt regulator IC biasing. Use Value: Maintains ±10% output regulation across line/load variations while surviving 150 A surge events from transformer leakage spikes. | Use Scenario: Protects PLC analog input channels from accidental 48 V DC field wiring faults. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess current above 33 V to ground before front-end op-amp damage. Use Value: Limits transient voltage to safe 33 V level with only 0.5 μA leakage at 25.1 V, preserving signal integrity during normal operation. |
| Programmable Logic Controller Reference | DC Motor Drive Bus Voltage Monitor |
Use Scenario: Supplies stable 33 V reference for ADC voltage scaling in industrial control modules. IC Role / Device Role / Timing Role: Precision voltage reference source for 12-bit analog-to-digital conversion subsystem. Use Value: Delivers 33 V ±10% with 10 Ω dynamic impedance, minimizing code spread due to supply ripple in noisy factory environments. | Use Scenario: Monitors 48 V bus in H-bridge motor drives to trigger shutdown if voltage exceeds safe limit. IC Role / Device Role / Timing Role: Overvoltage detection element feeding comparator input in fault protection circuitry. Use Value: Activates protection at precisely 33 V with 3.5 V regulation window, allowing margin for bus ripple while avoiding nuisance trips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5364B/TR8 | ±5% tolerance (B suffix) vs. ±10% (A suffix); otherwise identical electrical specs and package | Higher precision regulation required; tighter voltage window needed for sensitive references | Select 1N5364B/TR8 when system-level accuracy demands <±5% VZ stability |
| MMBZ5263B-TP | Surface-mount SOD-123 package; 33 V ±5%; 0.5 W rating; 10x smaller footprint | Space-constrained PCBs; automated pick-and-place assembly; lower power dissipation needs | Select MMBZ5263B-TP for compact designs where 500 mW suffices and thermal management permits |
Compared with 1N5364A/TR8, the 1N5364B/TR8 offers improved voltage accuracy but same thermal and surge capability, while the MMBZ5263B-TP trades power handling and surge robustness for miniaturization and SMT compatibility.
Availability
1N5364A/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage clamps, and programmable logic controller references requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5364A/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 1N53xxA/B series was designed specifically for ruggedized voltage regulation in harsh-environment power systems where surge immunity, wide temperature operation, and long-term parametric stability are critical.
FAQ
What is the Zener voltage tolerance of the 1N5364A/TR8?
The 1N5364A/TR8 has a nominal Zener voltage of 33 V with a ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual breakdown voltage falls between 29.7 V and 36.3 V at 40 mA and 25°C lead temperature. The tolerance is confirmed in the Electrical Characteristics table on page 1 of the official datasheet, where all "A"-suffix devices are explicitly assigned ±10%.
What does the "TR8" suffix mean in 1N5364A/TR8?
The "TR8" suffix in 1N5364A/TR8 indicates tape-and-reel packaging per EIA-296 standard, with 8 mm tape width and component orientation optimized for automated axial-leaded placement equipment. This format enables high-volume manufacturing without manual handling, while retaining the standard T-18 axial-leaded form factor. The TR8 option is documented in the Mechanical and Packaging section of the datasheet.
Can the 1N5364A/TR8 be used in surface-mount designs?
The 1N5364A/TR8 is an axial-leaded through-hole device in T-18 package and is not inherently surface-mount compatible. However, it can be mounted on SMT boards using axial-to-SMT adapter carriers or wave-soldered after paste printing. For native SMT implementation, Microsemi offers surface-mount equivalents like SMBJ5364B, which shares identical electrical specs but uses DO-214AA package.
What is the maximum surge current rating for the 1N5364A/TR8?
The 1N5364A/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 150 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating is specified in the Electrical Characteristics table and reflects the device's ability to absorb transient energy without failure - critical for protecting downstream circuitry from inductive switching spikes or lightning-induced surges.
How does thermal resistance affect the 1N5364A/TR8's power handling?
The 1N5364A/TR8 has a junction-to-lead thermal resistance of 25°C/W at 3/8" lead length, meaning each watt dissipated raises the junction temperature 25°C above lead temperature. At ambient mounting (FR4 board), junction-to-ambient resistance rises to 85°C/W, limiting usable power to ~1.47 W unless heatsinking is applied. Derating curves in Figure 1 show linear reduction beyond 25°C lead temperature.
1N5364A/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):
- 33 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 23.8 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
1N5364A/TR8 FAQ
1.How can I place an order for 1N5364A/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5364A/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 1N5364A/TR8 reliable?
The price and inventory of 1N5364A/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5364A/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5364A/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5364A/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5364A/TR8?
1N5364A/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5364A/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 1N5364A/TR8?
For technical support, including 1N5364A/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5364A/TR8 requirements.
6.How does Aetrix verify that 1N5364A/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5364A/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 1N5364A/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5364A/TR8?
All 1N5364A/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5364A/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 1N5364A/TR8 part is unused and in its original packaging.
Return procedure for 1N5364A/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5364A/TR8 Tags
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