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Microchip Technology 1N5348BE3/TR13
- Part No.:
- 1N5348BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5348BE3/TR13.pdf
- Description:
- DIODE ZENER 11V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,778
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Product details
Overview
1N5348BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 11 V, ±5% tolerance (B suffix), 125 mA maximum Zener current (IZM), 2.5 Ω dynamic impedance (ZZ), and 0.25 V voltage regulation (ΔVZ). 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 1N5348BE3/TR13 datasheet, 1N5348BE3/TR13 pinout, 1N5348BE3/TR13 application, or 1N5348BE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (8.0 A), reverse leakage at VR = 8.0 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown. Its Zener voltage is specified at 125 mA test current (IZT) and measured at 25 °C lead temperature (TL), with voltage regulation defined as the difference between voltages at 10% and 50% of IZM.
It features low thermal resistance (25 °C/W junction-to-lead at 10 mm lead length), moisture sensitivity Level 1 per J-STD-020B (no dry pack required), and cathode polarity indicated by a band. The T-18 package supports axial mounting on FR4 PCBs with 1 oz copper and defined pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% - stable regulation point under 125 mA DC bias at 25 °C TL |
| Power Dissipation | 5.0 W at TL < 25 °C - requires heat sinking beyond 3/8″ lead length for full rating |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC impedance ensures minimal voltage shift across load current changes |
| Max Reverse Current (IR) | 5.0 µA at VR = 8.0 V - low leakage preserves regulation accuracy in high-impedance bias networks |
| Voltage Regulation (ΔVZ) | 0.25 V - difference between VZ at 12.5 mA and 62.5 mA confirms tight line regulation |
| Surge Current (IZSM) | 8.0 A (8.3 ms half-sine) - withstands transient overloads without degradation |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design with standard lead-mounting practice |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free thermosetting epoxy, UL94V-0 rated), 0.7 g weight, cathode identified by color band. Leads are annealed matte-tin plated (RoHS compliant, solderable per MIL-STD-750 Method 2026).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to lower-potential side in Zener regulation; forward voltage ≤1.2 V @ 1.0 A |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; must be held positive relative to anode to maintain regulation; marked "1N5348BE3/TR13" on body |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% (A) or ±20% (no suffix) variants in cost-sensitive designs |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints during assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protective packaging in logistics |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with matte-tin plating and halogen-free epoxy encapsulation |
Applications
| DC Power Supply Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator circuits or providing reference for ADC bias networks. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise 11 V reference potential. Use Value: Maintains ±5% output stability across 12.5–62.5 mA operating range with only 0.25 V regulation delta. | Use Scenario: Protecting downstream ICs from transient voltage spikes on 12 V rail in automotive body control modules. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess energy above 11 V to ground during load dump events. Use Value: Withstands 8.0 A surge (8.3 ms half-sine) without parametric shift, preserving system reliability. |
| Industrial Sensor Excitation | Programmable Logic Controller Input Protection |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors in process control transmitters. IC Role / Device Role / Timing Role: Precision voltage source referenced to system ground, operating within –65 °C to +150 °C ambient. Use Value: Low 25 °C/W junction-to-lead thermal resistance allows direct lead-mounting without heatsink in sealed enclosures. | Use Scenario: Limiting input voltage to PLC digital input stages exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage suppression device placed before TVS diode and series resistor. Use Value: 5.0 µA reverse leakage at 8.0 V minimizes loading on upstream signal sources while enabling fast clamp response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5348B (non-e3, non-TR) | Same electrical specs, but lead finish is SnPb (not RoHS-compliant); no tape-and-reel packaging | Not suitable for RoHS-compliant production; requires manual placement or bulk feeders | Select 1N5348BE3/TR13 when RoHS compliance and automated SMT placement are required |
| MMSZ5242B-TP (Micro Commercial Components) | Surface-mount SOD-123 package; 11 V ±5%, 500 mW rating; higher ZZ (9 Ω), lower IZM (20 mA) | Limited to low-power signal-level regulation; unsuitable for 5 W dissipation or high-surge environments | Select 1N5348BE3/TR13 for through-hole mounting, 5 W thermal handling, or 8.0 A surge immunity |
Compared with 1N5348B and MMSZ5242B-TP, the 1N5348BE3/TR13 uniquely combines RoHS compliance, tape-and-reel delivery, 5 W power handling, and 8.0 A surge capability in an axial T-18 package-making it optimal for industrial power supply and ruggedized clamp applications where thermal margin and assembly automation matter.
Availability
1N5348BE3/TR13 is available at Aetrix Electronics and suitable for DC power supply reference, overvoltage clamp circuit, and industrial sensor excitation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N5348BE3/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 for robust, high-power voltage regulation in harsh-environment applications-emphasizing thermal performance, surge resilience, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5348BE3/TR13?
The 1N5348BE3/TR13 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 11 V regulation voltage falls within 10.45 V to 11.55 V at 125 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR13 denotes tape-and-reel packaging per EIA-296.
Can the 1N5348BE3/TR13 be used in surface-mount designs?
No-the 1N5348BE3/TR13 uses a T-18 axial-leaded package and is not a surface-mount device. For SMT equivalents, Microsemi offers the SMBJ5348B (DO-214AA) and SMBG5348B (DO-214AB), which share identical electrical specifications but require different board layout and reflow profiles.
What is the maximum steady-state power dissipation of the 1N5348BE3/TR13 on a standard FR4 PCB?
When mounted on FR4 with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5348BE3/TR13 delivers 1.47 W steady-state power at 25 °C ambient-derived from its 85 °C/W junction-to-ambient thermal resistance. Full 5 W operation requires lead temperature control below 25 °C, typically via heatsinking at 10 mm from the body.
Does the 1N5348BE3/TR13 meet moisture sensitivity requirements for standard PCB assembly?
Yes-the 1N5348BE3/TR13 is rated IPC/JEDEC J-STD-020B Level 1, meaning it has no floor-life limitation and requires no dry-packaging or baking prior to reflow or wave soldering. This simplifies inventory handling and eliminates moisture-related popcorning risks during assembly.
How does the voltage regulation (ΔVZ) specification impact circuit design with the 1N5348BE3/TR13?
The 1N5348BE3/TR13 specifies ΔVZ = 0.25 V-the difference between Zener voltage measured at 10% and 50% of its 125 mA maximum current (i.e., 12.5 mA vs. 62.5 mA). This quantifies its line regulation performance, allowing designers to predict worst-case output variation across expected load current ranges without additional compensation.
1N5348BE3/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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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
1N5348BE3/TR13 FAQ
1.How can I place an order for 1N5348BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5348BE3/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 1N5348BE3/TR13 reliable?
The price and inventory of 1N5348BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5348BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5348BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5348BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5348BE3/TR13?
1N5348BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5348BE3/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 1N5348BE3/TR13?
For technical support, including 1N5348BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5348BE3/TR13 requirements.
6.How does Aetrix verify that 1N5348BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5348BE3/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 1N5348BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5348BE3/TR13?
All 1N5348BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5348BE3/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 1N5348BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5348BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5348BE3/TR13 Tags
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