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Microchip Technology 1N5351BE3/TR13
- Part No.:
- 1N5351BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5351BE3/TR13.pdf
- Description:
- DIODE ZENER 14V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,132
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Product details
Overview
1N5351BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 14 V, ±5% tolerance (B suffix), 2.5 Ω maximum dynamic impedance at 100 mA test current, and 6.7 A maximum DC zener current when adequately heat-sunk. It operates across –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5351BE3/TR13 datasheet, 1N5351BE3/TR13 pinout, 1N5351BE3/TR13 application, or 1N5351BE3/TR13 equivalent, key selection criteria include its 14 V regulation point, 5 W steady-state power rating at 25 °C lead temperature, low 0.25 V voltage regulation (ΔVZ) across 10–50% IZM, RoHS-compliant matte-tin plating, and T-18 axial package compatibility with through-hole PCB assembly.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown mode. Its regulation stability relies on low dynamic impedance (ZZ = 2.5 Ω) and tight voltage tolerance (±5%), enabling consistent clamping under varying load currents from 10 mA to 6.7 A.
The 1N5351BE3/TR13 exhibits minimal voltage drift over temperature (–65 °C to +150 °C), maintains <0.5 μA reverse leakage at 10.1 V, and delivers high surge current capability (6.7 A peak, 8.3 ms half-sine) - critical for transient suppression in unregulated DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V nominal, ±5% tolerance - defines precise clamping threshold for 12–15 V system rails. |
| Test Current (IZT) | 100 mA - standard bias point for measuring VZ and ZZ; ensures stable regulation in mid-range loads. |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low resistance in breakdown enables minimal output voltage variation under current transients. |
| Max Regulator Current (IZM) | 6.7 A - maximum continuous DC current at TL = 25 °C with adequate heatsinking (3/8″ lead length). |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity. |
| Reverse Leakage (IR) | 1.0 μA max at 10.1 V - ensures negligible standby power loss in high-impedance reference circuits. |
| Thermal Resistance | 25 °C/W junction-to-lead - supports thermal design with standard axial-lead mounting and minimal heatsink area. |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL. Cathode indicated by color band; banded end must be held positive relative to anode during operation. RoHS-compliant matte-tin plated leads, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes reference potential for reverse-biased operation. |
| Cathode | Regulated output node | Banded terminal; held at stable 14 V above anode when reverse current ≥100 mA flows. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard DO-204AL mechanical and electrical definitions for interchangeability. |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to reflow or wave soldering. |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - withstands electrostatic discharge without parameter shift or failure. |
| High surge current rating | 6.7 A peak (8.3 ms half-sine) - protects downstream circuitry against short-duration overvoltage events. |
| e3 RoHS compliance | Lead-free matte-tin plating meets EU RoHS Directive 2011/65/EU and J-STD-609A Class 1 marking. |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference in 12 V switch-mode power supply secondary-side error amplifiers. IC Role / Device Role / Timing Role: Voltage reference element providing fixed 14 V reference to optocoupler input or TL431 comparator. Use Value: Enables ±1% output regulation accuracy despite line/load variations, leveraging 2.5 Ω ZZ and 0.25 V ΔVZ. |
Use Scenario: Clamping transient spikes on 12 V automotive control module inputs exposed to load-dump conditions. IC Role / Device Role / Timing Role: Shunt protector diverting surge energy above 14 V to ground before reaching sensitive logic ICs. Use Value: Absorbs up to 6.7 A surge current (8.3 ms) without degradation, maintaining clamping voltage within 14.35 V. |
| Programmable Reference Source | Temperature-Stable Bias Generator |
Use Scenario: Setting precise bias points in analog sensor signal conditioning circuits requiring stable 14 V reference. IC Role / Device Role / Timing Role: Primary voltage reference for op-amp gain-setting networks and ADC reference dividers. Use Value: Delivers <0.5 μA leakage at 10.1 V and ±5% tolerance, minimizing offset drift in high-impedance nodes. |
Use Scenario: Generating temperature-compensated bias voltages for RF amplifier stages in base station transceivers. IC Role / Device Role / Timing Role: Stable DC reference source operating continuously from –40 °C to +85 °C ambient. Use Value: Maintains regulation across –65 °C to +150 °C junction range with <2.5 Ω ZZ, reducing thermal coefficient impact on bias accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5351B (non-e3, non-TR) | Same electrical specs but SnPb-plated leads and bulk packaging; lacks RoHS compliance and tape-and-reel convenience. | Not suitable for lead-free manufacturing or automated pick-and-place; requires manual loading or tube-to-tray transfer. | Select only for legacy repair or non-RoHS environments where e3 compliance is not mandated. |
| MMSZ5241B-TP (Micro Commercial Components) | Surface-mount SOD-123 package, 500 mW rating, 14 V ±5%, ZZ = 20 Ω - lower power, higher impedance, smaller footprint. | Used in space-constrained consumer electronics; cannot replace 1N5351BE3/TR13 in 5 W power dissipation roles. | Choose only for low-power, high-density designs where thermal derating and surge immunity are secondary to size. |
Compared with 1N5351B and MMSZ5241B-TP, the 1N5351BE3/TR13 uniquely combines 5 W power handling, axial T-18 form factor for mechanical robustness, RoHS-compliant matte-tin plating, and tape-and-reel delivery - making it optimal for industrial power supply reference and surge protection where reliability, thermal margin, and manufacturability converge.
Availability
1N5351BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, and programmable reference source designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N5351BE3/TR13 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 specifically for ruggedized voltage regulation in harsh-environment power systems - emphasizing wide temperature operation, high surge resilience, and JEDEC-standardized mechanical compatibility.
FAQ
What is the Zener voltage tolerance of the 1N5351BE3/TR13?
The 1N5351BE3/TR13 has a nominal Zener voltage of 14 V with ±5% tolerance, indicated by the "B" suffix in its part number per Microsemi's documentation. This means the actual measured VZ falls between 13.3 V and 14.7 V at 100 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance but does not affect voltage tolerance.
Can the 1N5351BE3/TR13 be used in surface-mount designs?
No - the 1N5351BE3/TR13 uses a T-18 axial-leaded package (JEDEC DO-204AL) intended for through-hole mounting. It is not compatible with SMT reflow processes or pick-and-place equipment. For surface-mount equivalents, Microsemi offers the SMBJ5351B or SMBG5351B in DO-214AA/DO-214AB packages, which share identical electrical specs but differ mechanically.
What is the maximum continuous current the 1N5351BE3/TR13 can handle?
The 1N5351BE3/TR13 supports a maximum continuous Zener current (IZM) of 6.7 A when operated at 25 °C lead temperature with 3/8″ (10 mm) lead length from the body and adequate heatsinking. At ambient temperature on FR4 board (1 oz Cu, 4 mm² pads), its steady-state power drops to 1.47 W, limiting usable current to approximately 105 mA at 14 V.
Does the 1N5351BE3/TR13 require moisture preconditioning before soldering?
No - the 1N5351BE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is not moisture-sensitive and requires no dry pack or baking prior to wave or reflow soldering. This simplifies manufacturing flow and eliminates risk of popcorning during assembly.
How does the voltage regulation (ΔVZ) specification apply to the 1N5351BE3/TR13?
The 1N5351BE3/TR13 specifies a maximum voltage regulation (ΔVZ) of 0.25 V, defined as the difference between its Zener voltage measured at 10% and 50% of IZM (i.e., 0.67 A and 3.35 A). This low value confirms excellent line regulation performance - critical for maintaining stable reference voltage across wide load current ranges in precision analog circuits.
1N5351BE3/TR13 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):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.1 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
1N5351BE3/TR13 FAQ
1.How can I place an order for 1N5351BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5351BE3/TR13 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 1N5351BE3/TR13 reliable?
The price and inventory of 1N5351BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5351BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5351BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5351BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5351BE3/TR13?
1N5351BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5351BE3/TR13 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 1N5351BE3/TR13?
For technical support, including 1N5351BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5351BE3/TR13 requirements.
6.How does Aetrix verify that 1N5351BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5351BE3/TR13 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 1N5351BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5351BE3/TR13?
All 1N5351BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5351BE3/TR13, 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 1N5351BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5351BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5351BE3/TR13 Tags
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