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Microchip Technology 1N5350BE3/TR8
- Part No.:
- 1N5350BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350BE3/TR8.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,008
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Product details
Overview
1N5350BE3/TR8 from Microsemi is a 13 V, ±5% tolerance, 5 W axial-leaded silicon Zener diode optimized for voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications. It delivers 100 mA maximum Zener current (IZM) at 25°C with 2.5 Ω dynamic impedance (ZZ) and operates across –65°C to +150°C.
For engineers reviewing the 1N5350BE3/TR8 datasheet, 1N5350BE3/TR8 pinout, 1N5350BE3/TR8 application, or 1N5350BE3/TR8 equivalent, key selection factors include its 13 V nominal Zener voltage, 5 W steady-state power rating at lead temperature <25°C, low 0.25 V voltage regulation (ΔVZ), and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown mode, with Zener voltage specified at 13 V ±5% under 100 mA test current (IZT). Its thermal resistance is 25 °C/W junction-to-lead (3/8" lead length) and 85 °C/W junction-to-ambient on FR4 board, enabling stable regulation under moderate heatsinking.
The 1N5350BE3/TR8 exhibits minimal voltage variation versus current-0.25 V ΔVZ between 10% and 50% of IZM-and withstands 7.0 A non-repetitive surge current (8.3 ms half-sine). Its cathode band polarity and void-free UL94V-0 epoxy case support reliable axial mounting in industrial and telecom power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±5% at 100 mA - defines precise regulation point for feedback and clamping circuits |
| Power Dissipation | 5.0 W at TL < 25°C - supports high-current regulation when leads are adequately heat-sunk |
| Dynamic Impedance (ZZ) | 2.5 Ω at 100 mA - ensures tight voltage stability under varying load currents |
| Reverse Current (IR) | 1.0 μA max at 9.4 V - guarantees low leakage in standby and precision biasing |
| Voltage Regulation (ΔVZ) | 0.25 V - difference between VZ measured at 10% and 50% of IZM, indicating line regulation quality |
| Surge Current (IZSM) | 7.0 A (8.3 ms half-sine) - enables robust transient overvoltage suppression without failure |
| Operating Temperature | –65°C to +150°C - suitable for under-hood automotive, industrial controls, and telecom infrastructure |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL, void-free UL94V-0 epoxy body, 0.7 g weight, 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 | Forward conduction terminal / reference ground node | Connected to circuit ground or lower potential side in shunt regulator configuration |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to input rail or error amplifier feedback point to clamp voltage at 13 V |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, marking, and electrical behavior across global supply chain |
| Moisture sensitivity Level 1 | No dry pack required-reduces handling cost and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Enables safe handling in standard production environments without special ESD controls |
| High surge current capability | 7.0 A peak (8.3 ms) supports transient immunity in unregulated DC inputs and lightning-prone interfaces |
| Tight voltage tolerance (±5%) | Reduces need for post-assembly trimming in voltage reference and feedback networks |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
|
Use Scenario: Regulates output voltage in flyback converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 13 V reference to TL431 or similar error amplifier. Use Value: Maintains ±1% output regulation across line/load/temperature with 0.25 V ΔVZ and 2.5 Ω ZZ. |
Use Scenario: Protects 12 V rail in PLC I/O module against 24 V miswiring or inductive kickback. IC Role / Device Role / Timing Role: Passive overvoltage clamp placed between rail and ground, conducting only above 13 V. Use Value: Absorbs 5 W continuously and 7 A surges without degradation, preventing downstream IC damage. |
| Telecom Line Card Reference | Automotive Body Control Module Bias |
|
Use Scenario: Supplies stable bias to op-amp comparators monitoring -48 V telecom battery voltage. IC Role / Device Role / Timing Role: Precision 13 V reference source for analog sensing circuitry in harsh EMI environments. Use Value: Delivers low-drift performance across –40°C to +85°C with <1 μA leakage at 9.4 V. |
Use Scenario: Sets threshold for microcontroller reset supervisor detecting undervoltage on 12 V battery rail. IC Role / Device Role / Timing Role: Zener-based reset generator triggering MCU reset below 11.5 V (13 V × 0.88). Use Value: Operates reliably from –40°C to +125°C with no derating needed up to 100°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350BRLG | Same 13 V ±5%, 5 W rating, but in bulk packaging (no tape/reel); RoHS-compliant matte-tin plating identical | No TR8 tape-and-reel format-requires manual loading or different feeder setup | Select 1N5350BRLG for prototyping or low-volume hand-soldered assemblies where reel logistics are unnecessary |
| MMBZ5243B-TP | Surface-mount SOT-23 package; 13 V ±5%, but rated only 225 mW - not power-equivalent | Not suitable for >200 mA regulation; limited thermal mass prevents 5 W operation without external heatsink | Choose MMBZ5243B-TP only for space-constrained signal-level references-not for power regulation roles filled by 1N5350BE3/TR8 |
Compared with 1N5350BRLG and MMBZ5243B-TP, the 1N5350BE3/TR8 uniquely combines axial-leaded manufacturability, 5 W dissipation, and tape-and-reel compatibility-making it optimal for automated through-hole production of industrial power supplies requiring robust voltage clamping.
Availability
1N5350BE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and telecom line card references requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5350BE3/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 specifically for ruggedized 5 W Zener regulation in mission-critical power systems-emphasizing wide temperature operation, surge resilience, and JEDEC-standardized form factor.
FAQ
What is the Zener voltage tolerance of the 1N5350BE3/TR8?
The 1N5350BE3/TR8 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix in its part number. This means its nominal 13 V Zener voltage is guaranteed between 12.35 V and 13.65 V at 100 mA test current and 25°C lead temperature. The e3 suffix confirms RoHS compliance, and TR8 denotes tape-and-reel packaging per EIA-296.
Can the 1N5350BE3/TR8 be used in surface-mount designs?
No-the 1N5350BE3/TR8 uses an axial-leaded T-18 package (JEDEC DO-204AL) and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5350B or SMBG5350B in DO-214AA/DO-214AB packages, which share the same 13 V ±5% specification but require reflow-compatible layout and thermal design.
What is the maximum continuous Zener current for the 1N5350BE3/TR8?
The 1N5350BE3/TR8 supports a maximum continuous Zener current (IZM) of 100 mA at 25°C lead temperature (TL < 25°C with 3/8" lead length). At 25°C ambient on FR4 board, its steady-state power drops to 1.47 W, limiting usable current to approximately 113 mA before exceeding thermal limits-requiring careful PCB copper area design for higher loads.
Does the 1N5350BE3/TR8 require moisture preconditioning before reflow?
No-the 1N5350BE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and requires no dry pack or baking prior to soldering. Its void-free thermosetting epoxy body provides inherent moisture resistance, simplifying manufacturing flow and reducing process risk.
How does the voltage regulation (ΔVZ) specification impact circuit performance for the 1N5350BE3/TR8?
The 1N5350BE3/TR8 specifies ΔVZ = 0.25 V-the difference between Zener voltage measured at 10% and 50% of IZM (i.e., 10 mA and 50 mA). This low value indicates excellent line regulation, ensuring output voltage remains stable across wide current variations in feedback or clamping applications without additional compensation.
1N5350BE3/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):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 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
1N5350BE3/TR8 FAQ
1.How can I place an order for 1N5350BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350BE3/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 1N5350BE3/TR8 reliable?
The price and inventory of 1N5350BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5350BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350BE3/TR8?
1N5350BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350BE3/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 1N5350BE3/TR8?
For technical support, including 1N5350BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350BE3/TR8 requirements.
6.How does Aetrix verify that 1N5350BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5350BE3/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 1N5350BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5350BE3/TR8?
All 1N5350BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350BE3/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 1N5350BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5350BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350BE3/TR8 Tags
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