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Microchip Technology 1N5364B/TR8
- Part No.:
- 1N5364B/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5364B/TR8.pdf
- Description:
- DIODE ZENER 33V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,689
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Product details
Overview
1N5364B/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 33 V, ±5% tolerance (B suffix), 10 Ω maximum dynamic impedance at 40 mA test current, and 150 mA maximum Zener current when adequately heat-sunk. 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 1N5364B/TR8 datasheet, 1N5364B/TR8 pinout, 1N5364B/TR8 application, or 1N5364B/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (150 A), low voltage regulation drift (ΔVZ = 3.5 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
The 1N5364B/TR8 functions as a two-terminal shunt regulator, maintaining stable 33 V output across wide operating current (1–150 mA) and temperature (–65°C to +150°C) ranges. Its low 10 Ω dynamic impedance ensures minimal voltage variation under load transients.
Designed for axial-lead through-hole mounting on FR4 PCBs with 1 oz copper, it delivers 1.47 W steady-state power at 25°C ambient (85 °C/W junction-to-ambient) and up to 5 W at 25°C lead temperature (3/8″ from body). Polarity is marked by cathode band; device operates with banded end positive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±5% - defines regulated output level for feedback and clamp circuits |
| Test Current (IZT) | 40 mA - standardized bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 10 Ω max - ensures <0.4 V deviation over 10–50% IZM range |
| Max Regulator Current (IZM) | 150 mA - maximum continuous DC current at 25°C lead temperature with heat sinking |
| Surge Current (IZSM) | 150 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
| Voltage Regulation (ΔVZ) | 3.5 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead, enabling thermal design with 3/8″ lead length from body |
Pinout & Package
Package: T-18 axial-leaded plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); leads plated with RoHS-compliant annealed matte tin, solderable per MIL-STD-750 Method 2026; cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal during reverse breakdown | Connected to lower-potential node (e.g., ground or return path) in shunt regulation |
| Cathode | Current source terminal during reverse breakdown | Banded end; connected to higher-potential node (e.g., supply rail or feedback node) |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures industry-standard mechanical and electrical interchangeability across suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% (A) or ±20% (no suffix) variants without premium cost |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; tin-lead alternative available upon request |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Shunt reference providing precise 33 V threshold to control PWM duty cycle. Use Value: Maintains ±1.65 V (±5%) output regulation across line/load/temperature with 10 Ω ZZ limiting feedback error. | Use Scenario: Protects downstream ICs from transient overvoltage events on 24–48 V industrial bus lines. IC Role / Device Role / Timing Role: Clamping element that conducts above 33 V to divert surge energy to ground. Use Value: Withstands 150 A (8.3 ms) surges while holding clamped voltage ≤36.5 V (33 V + ΔVZ). |
| Programmable Voltage Reference | DC-DC Converter Output Trim |
Use Scenario: Provides stable reference for DAC-based adjustable power supply setpoints in test equipment. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost bandgap ICs where 33 V output is required. Use Value: Delivers 33 V ±5% with <3.5 V regulation drift over 1–150 mA operating range. | Use Scenario: Fine-tunes output voltage of fixed-output DC-DC modules using external resistor divider. IC Role / Device Role / Timing Role: Adjustable reference node inserted between feedback resistors to shift regulation point. Use Value: Enables ±5% output adjustment range without modifying module internal compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5364B (non-TR8) | Same electrical specs; differs only in packaging - bulk vs. tape-and-reel (TR8 = EIA-296 standard 8 mm tape) | No functional difference; TR8 enables automated pick-and-place assembly | Select 1N5364B/TR8 for SMT production lines requiring reel-fed feeders |
| MMBZ5265B (SOT-23) | Surface-mount package; same 33 V ±5%, but lower 0.5 W power rating and 100 mA IZM | Not suitable for 5 W dissipation; limited to low-power bias/reference roles | Choose MMBZ5265B only when board space is constrained and power <0.5 W |
Compared with 1N5364B/TR8, the bulk 1N5364B offers identical performance but requires manual or tube-based placement, while MMBZ5265B trades power capability for miniaturization-neither is pin-compatible due to differing packages and thermal limits.
Availability
1N5364B/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and programmable voltage references requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5364B/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 1N53xxB series was designed for robust, high-power voltage regulation in harsh-environment power systems where stability, surge resilience, and long-term parametric consistency are critical.
FAQ
What is the Zener voltage tolerance of the 1N5364B/TR8?
The 1N5364B/TR8 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix per Microsemi's documentation. This means its nominal 33 V regulation falls within 31.35 V to 34.65 V at 40 mA test current and 25°C lead temperature. The tolerance is guaranteed across the full operating temperature range of –65°C to +150°C, and applies to all units bearing the B suffix in the 1N5333B–1N5388B family.
Can the 1N5364B/TR8 be used without a heatsink?
The 1N5364B/TR8 can operate without an external heatsink only at reduced power levels. At 25°C ambient on FR4 with 1 oz copper and specified pad geometry, its steady-state power is limited to 1.47 W. Full 5 W operation requires maintaining lead temperature (TL) at ≤25°C, typically achieved with ≥3/8″ lead length from body and adequate copper pour. Derating curves in the datasheet must be followed for safe operation above 25°C ambient.
What does the "TR8" suffix mean in 1N5364B/TR8?
The "TR8" suffix in 1N5364B/TR8 indicates tape-and-reel packaging per EIA-296 standard, using 8 mm carrier tape. This format supports automated surface-mount assembly equipment. Electrically and mechanically, 1N5364B/TR8 is identical to the bulk-packaged 1N5364B; the TR8 designation affects only packaging, not specifications, reliability, or performance. Reel quantity is typically 1,000 units per reel.
Is the 1N5364B/TR8 RoHS compliant?
Yes, the 1N5364B/TR8 is RoHS compliant, as confirmed by the "e3" designation in Microsemi's official documentation and product marking. Its leads feature RoHS-compliant annealed matte-tin plating, meeting EU Directive 2011/65/EU requirements. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is rated for soldering at 260°C for 10 seconds.
What is the maximum surge current rating for the 1N5364B/TR8?
The 1N5364B/TR8 has a maximum non-repetitive surge current (IZSM) rating of 150 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating enables transient suppression in industrial power rails and input-stage clamping. Surge capability assumes proper PCB layout (e.g., short traces, adequate copper) and is not intended for repetitive application. Exceeding this rating risks irreversible junction damage.
1N5364B/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:
- ±5%
- 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
1N5364B/TR8 FAQ
1.How can I place an order for 1N5364B/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5364B/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 1N5364B/TR8 reliable?
The price and inventory of 1N5364B/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5364B/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5364B/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5364B/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5364B/TR8?
1N5364B/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5364B/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 1N5364B/TR8?
For technical support, including 1N5364B/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5364B/TR8 requirements.
6.How does Aetrix verify that 1N5364B/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5364B/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 1N5364B/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5364B/TR8?
All 1N5364B/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5364B/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 1N5364B/TR8 part is unused and in its original packaging.
Return procedure for 1N5364B/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5364B/TR8 Tags
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MM5Z5V1ST1G
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