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Microchip Technology 1N5351AE3/TR8
- Part No.:
- 1N5351AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5351AE3/TR8.pdf
- Description:
- DIODE ZENER 14V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,148
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Product details
Overview
1N5351AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 14 V, ±10% tolerance (A suffix), 2.5 Ω maximum dynamic impedance at 100 mA test current, and 6.7 V maximum voltage regulation (ΔVZ) across 10–50% of IZM. It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in DC power supplies.
For engineers reviewing the 1N5351AE3/TR8 datasheet, 1N5351AE3/TR8 pinout, 1N5351AE3/TR8 application, or 1N5351AE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 A), reverse leakage (1.0 µA @ 10.1 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a shunt voltage regulator by maintaining a stable reverse-biased breakdown voltage across its terminals under varying load and line conditions. Its low dynamic impedance (2.5 Ω) and tight ΔVZ (6.7 V) ensure minimal output voltage drift with current changes from 10 to 50% of IZM.
The 1N5351AE3/TR8 employs a void-free thermosetting epoxy T-18 package rated for 5 W at 25 °C lead temperature, with thermal resistance of 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4. It features cathode band polarity marking and complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V nominal, ±10% tolerance - defines regulated output voltage under specified test current |
| Test Current (IZT) | 100 mA - operating point where VZ and ZZ are guaranteed |
| Dynamic Impedance (ZZ) | 2.5 Ω max at IZT - determines small-signal AC voltage variation with current change |
| Max Voltage Regulation (ΔVZ) | 6.7 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation stability |
| Max Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - defines single-event transient energy handling capability |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables power derating calculation when heatsinking is applied |
| Reverse Leakage (IR) | 1.0 µA max at 10.1 V - ensures low standby power loss in high-impedance bias networks |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-41 outline; void-free UL94V-0 epoxy body; cathode indicated by colored band; leads plated with RoHS-compliant annealed matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-bias current flows from cathode to anode during regulation |
| Cathode | Regulated output node | Banded end; held at stable VZ above anode potential; sinks current to maintain voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, electrical behavior, and cross-manufacturer interchangeability |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with matte-tin plating-no lead, cadmium, or hexavalent chromium |
| Level 1 moisture sensitivity | No dry pack required prior to soldering-reduces handling cost and process complexity |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during assembly-lowers manufacturing risk |
| High surge current rating | 75 A non-recurrent half-sine withstand enables robust transient suppression without external TVS |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing unregulated 18 V DC input to deliver fixed 14 V rail for analog sensor biasing. IC Role / Device Role / Timing Role: Shunt regulator providing low-drift reference voltage independent of load current variation. Use Value: Maintains ±0.7 V output deviation over 10–500 mA load range due to 2.5 Ω ZZ and 6.7 V ΔVZ. |
Use Scenario: Clamping transient spikes on 12 V automotive control bus during load dump events. IC Role / Device Role / Timing Role: Voltage clamp absorbing surge energy up to 75 A peak without failure. Use Value: Withstands 8.3 ms half-sine surges without parameter shift-eliminates need for parallel TVS diodes. |
| Industrial Sensor Reference | Programmable Current Source Bias |
Use Scenario: Providing stable 14 V reference for 4–20 mA transmitter loop calibration. IC Role / Device Role / Timing Role: Precision voltage source establishing known headroom for op-amp current regulation. Use Value: ±10% VZ tolerance and <1 µA leakage enable sub-0.1% full-scale error in 16-bit DAC-based transmitters. |
Use Scenario: Setting bias point for constant-current LED driver using two-resistor feedback network. IC Role / Device Role / Timing Role: Fixed-voltage node defining reference for current-sense amplifier input. Use Value: Low ΔVZ (6.7 V) ensures current accuracy remains within ±2% across ambient temperature (–40 to +85 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5351B | ±5% VZ tolerance vs. ±10% for 1N5351AE3/TR8; otherwise identical electrical specs and package | Higher regulation accuracy required in precision reference designs where 1.4 V tighter VZ spread is critical | Select 1N5351B when tighter initial tolerance justifies higher cost; same thermal and surge performance |
| MMBZ5242BS | Surface-mount SOD-123 package; 14 V, ±5%; 0.5 W rating vs. 5 W; ZZ = 20 Ω max | Space-constrained PCBs where axial leads are impractical and power dissipation ≤0.5 W suffices | Choose MMBZ5242BS only for low-power signal-level clamping-not for 5 W continuous regulation |
Compared with 1N5351B and MMBZ5242BS, the 1N5351AE3/TR8 delivers industry-standard 5 W axial-leaded regulation with ±10% tolerance and proven surge robustness, making it optimal for industrial power supply and protection circuits where leaded mounting and high-energy transients are design requirements.
Availability
1N5351AE3/TR8 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and industrial sensor reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5351AE3/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 discrete components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized 5 W Zener regulation in harsh-environment power systems-emphasizing surge resilience, wide temperature operation, and military-grade screening compatibility.
FAQ
What is the Zener voltage tolerance of the 1N5351AE3/TR8?
The 1N5351AE3/TR8 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in the part number. This means its nominal 14 V regulation voltage falls within 12.6 V to 15.4 V at 100 mA test current and 25 °C lead temperature, as confirmed in the Microsemi 1N5333B–1N5388B datasheet Rev D.
Does the 1N5351AE3/TR8 require dry packing before reflow soldering?
No, the 1N5351AE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored and processed without dry pack or baking. Its void-free epoxy T-18 package inherently limits moisture ingress, eliminating pre-soldering humidity mitigation steps.
What is the maximum steady-state power dissipation for the 1N5351AE3/TR8 on a standard FR4 PCB?
When mounted on FR4 with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5351AE3/TR8 delivers 1.47 W steady-state power at 25 °C ambient-derived from its 85 °C/W junction-to-ambient thermal resistance. Derating applies above 25 °C per Figure 1 in the datasheet.
Can the 1N5351AE3/TR8 replace the 1N5351B in existing designs?
Yes, the 1N5351AE3/TR8 is mechanically and electrically compatible with the 1N5351B, sharing identical T-18 package, pinout, and all electrical parameters except tolerance (±10% vs. ±5%). No PCB or schematic changes are needed-only system-level verification of whether ±10% VZ meets application accuracy requirements.
What does the "TR8" suffix indicate in 1N5351AE3/TR8?
The "TR8" suffix denotes tape-and-reel packaging per EIA-296 standard, with 8 mm carrier tape width and component orientation optimized for automated pick-and-place assembly. It confirms RoHS compliance (e3) and axial-leaded T-18 form factor-no functional or electrical impact versus bulk or ammo-pack versions.
1N5351AE3/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):
- 14 V
- Tolerance:
- ±10%
- 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
1N5351AE3/TR8 FAQ
1.How can I place an order for 1N5351AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5351AE3/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 1N5351AE3/TR8 reliable?
The price and inventory of 1N5351AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5351AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5351AE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5351AE3/TR8 transactions.
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4.How is shipping managed for 1N5351AE3/TR8?
1N5351AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5351AE3/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 1N5351AE3/TR8?
For technical support, including 1N5351AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5351AE3/TR8 requirements.
6.How does Aetrix verify that 1N5351AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5351AE3/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 1N5351AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5351AE3/TR8?
All 1N5351AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5351AE3/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 1N5351AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5351AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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