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Microchip Technology 1N5344BE3/TR13
- Part No.:
- 1N5344BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5344BE3/TR13.pdf
- Description:
- DIODE ZENER 8.2V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,862
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Product details
Overview
1N5344BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 8.2 V ±5%, 150 mA test current (IZT), 1.5 Ω dynamic impedance (ZZ), and 10 μA maximum reverse leakage at 5.9 V. It operates from –65°C to +150°C and is RoHS-compliant (e3 suffix), used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5344BE3/TR13 datasheet, 1N5344BE3/TR13 pinout, 1N5344BE3/TR13 application, or 1N5344BE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (10 A), voltage regulation (ΔVZ = 0.20 V), and compatibility with T-18 axial package mounting on FR4 PCBs.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown, maintaining stable output across wide current (150 mA IZT to 1000 mA IZM) and temperature (–65°C to +150°C) ranges. Its low dynamic impedance (1.5 Ω) and tight ±5% tolerance ensure minimal voltage drift under load variation.
The 1N5344BE3/TR13 uses a void-free thermosetting epoxy case (UL94V-0), tin-plated leads compliant with MIL-STD-750 Method 2026, and achieves 25 °C/W thermal resistance when mounted with 3/8″ lead length - enabling reliable 5 W dissipation with modest heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±5% - defines precise regulation point for feedback networks and reference circuits |
| Test Current (IZT) | 150 mA - operating point where VZ and ZZ are specified; sets minimum bias for stable regulation |
| Dynamic Impedance (ZZ) | 1.5 Ω - low AC resistance ensures minimal voltage shift with current transients |
| Max Reverse Leakage (IR) | 10 μA @ 5.9 V - confirms low standby power loss in high-impedance bias networks |
| Max Regulator Current (IZM) | 1000 mA - peak DC current capability at TL = 25°C with adequate lead heatsinking |
| Surge Current (IZSM) | 10 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Voltage Regulation (ΔVZ) | 0.20 V - difference between VZ measured at 10% and 50% of IZM; quantifies line regulation fidelity |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL. Cathode indicated by band; banded end must be held positive relative to anode during regulation operation. Moisture sensitivity level: Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded terminal; supplies stable 8.2 V to feedback divider or reference load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance (B suffix) | Enables accurate setpoint control without post-calibration in mid-precision power supplies |
| 25 °C/W junction-to-lead thermal resistance | Allows full 5 W dissipation with simple 3/8″ lead length heatsinking - no PCB copper pour required |
| RoHS-compliant matte-tin plating (e3) | Ensures solderability and reliability under Pb-free reflow (260°C/10 s) per MIL-STD-750 |
| 10 A non-repetitive surge rating | Provides robust transient suppression in input-stage clamp circuits without derating |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints - ready for immediate assembly |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Stabilizing error amplifier input in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Zener reference providing fixed 8.2 V threshold to optocoupler LED drive circuit. Use Value: Maintains ±1.5% output regulation across line/load/temperature due to low ΔVZ (0.20 V) and stable ZZ (1.5 Ω). |
Use Scenario: Generating stable excitation voltage for RTD or bridge sensor conditioning. IC Role / Device Role / Timing Role: Precision shunt reference supplying constant 8.2 V to Wheatstone bridge top rail. Use Value: Delivers <10 ppm/°C effective TC via tight ±5% tolerance and low IR drift, reducing calibration burden. |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Clamping 12 V rail against ESD or load-dump transients in automotive body electronics. IC Role / Device Role / Timing Role: Shunt protector diverting surge current above 8.2 V to ground before downstream IC damage. Use Value: Withstands 10 A (8.3 ms) surges while holding clamping voltage ≤8.4 V - within safe margin of 12 V system rating. |
Use Scenario: Setting trip point for comparator-based brown-out detection in embedded MCU power monitoring. IC Role / Device Role / Timing Role: Fixed reference input to comparator's inverting input; triggers reset when VDD falls below 8.2 V. Use Value: ±5% tolerance ensures deterministic 7.8–8.6 V threshold window, eliminating false resets during ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5344B (non-e3, bulk) | Same electrical specs but SnPb lead finish; not RoHS-compliant | Restricted to legacy Pb-containing assembly processes | Select only if exempt from RoHS or using SnPb reflow |
| SMBJ5344B | Surface-mount SMB package; identical VZ/IZT/ZZ but higher thermal resistance (85 °C/W junction-to-ambient) | Requires PCB copper area for thermal management; unsuitable for through-hole designs | Choose for automated SMT lines where board space is constrained |
Compared with 1N5344BE3/TR13, the 1N5344B lacks RoHS compliance and requires different solder process controls, while SMBJ5344B trades axial-mount flexibility and superior thermal performance for SMT compatibility - making the e3/TR13 optimal for new RoHS-compliant through-hole power designs needing robust thermal handling.
Availability
1N5344BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning, overvoltage protection circuits, and embedded brown-out detection requiring stable component supply and full RoHS compliance.
Supply support for 1N5344BE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems - emphasizing thermal robustness, surge resilience, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of the 1N5344BE3/TR13?
The 1N5344BE3/TR13 has a Zener voltage tolerance of ±5%, denoted by the "B" suffix in its part number. This means its nominal 8.2 V regulation point falls within 7.79 V to 8.61 V at 25°C under specified test conditions. The e3 suffix confirms RoHS compliance but does not affect voltage tolerance.
What is the maximum continuous current the 1N5344BE3/TR13 can handle?
The 1N5344BE3/TR13 supports a maximum DC Zener current (IZM) of 1000 mA when lead temperature (TL) is maintained at 25°C with 3/8″ (10 mm) lead length from the body. Derating applies above 25°C per Figure 1 in the datasheet - at 75°C TL, IZM drops to approximately 500 mA.
Does the 1N5344BE3/TR13 require dry packing before PCB assembly?
No, the 1N5344BE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and requires no dry pack or floor-life management prior to assembly. It can be placed directly into reflow or wave soldering processes without preconditioning.
What is the surge current rating for the 1N5344BE3/TR13?
The 1N5344BE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 10 A, defined as a single 8.3 ms half-sine waveform. This rating enables reliable transient suppression in automotive and industrial environments where short-duration overcurrent events occur.
How is polarity marked on the 1N5344BE3/TR13?
The 1N5344BE3/TR13 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode to operate in Zener breakdown. Reversing polarity subjects the device to forward conduction (VF ≤ 1.2 V @ 1 A), not regulation.
1N5344BE3/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):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.9 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
1N5344BE3/TR13 FAQ
1.How can I place an order for 1N5344BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5344BE3/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 1N5344BE3/TR13 reliable?
The price and inventory of 1N5344BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5344BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5344BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5344BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5344BE3/TR13?
1N5344BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5344BE3/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 1N5344BE3/TR13?
For technical support, including 1N5344BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5344BE3/TR13 requirements.
6.How does Aetrix verify that 1N5344BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5344BE3/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 1N5344BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5344BE3/TR13?
All 1N5344BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5344BE3/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 1N5344BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5344BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5344BE3/TR13 Tags
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MMBZ5240B-7-F
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Diodes Incorporated
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MM5Z5V1ST1G
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