My Inquiry
My Account
Microchip Technology 1N5350E3/TR8
- Part No.:
- 1N5350E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350E3/TR8.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,639
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5350E3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 13 V, ±5% tolerance (B-suffix equivalent), 100 mA maximum regulator current (IZM), 2.5 Ω maximum dynamic impedance (ZZ), and 0.25 V maximum voltage regulation (ΔVZ). It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5350E3/TR8 datasheet, 1N5350E3/TR8 pinout, 1N5350E3/TR8 application, or 1N5350E3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (7.0 A), RoHS compliance (e3 suffix), and tape-and-reel packaging (TR8 suffix) for automated assembly.
Technical Context
The 1N5350E3/TR8 functions as a two-terminal voltage reference device operating in reverse breakdown mode. Its regulation performance is defined at 100 mA test current (IZT), with low dynamic impedance (2.5 Ω) ensuring minimal voltage shift across load variations, and tight ΔVZ (0.25 V) confirming stable regulation between 10% and 50% of IZM.
It features a void-free thermosetting epoxy T-18 package with tin-plated leads, moisture sensitivity level 1 (no dry pack required), and polarity indicated by cathode band. The device sustains 7.0 A non-recurrent 8.3 ms half-sine surge current and exhibits forward voltage ≤1.2 V at 1.0 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal, ±5% tolerance - defines precise regulation point for feedback networks |
| Power Dissipation | 5.0 W at 25 °C lead temperature - requires heat sinking above 25 °C per derating curve |
| Test Current (IZT) | 100 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω max - ensures <0.25 V output variation under 100 mA load change |
| Surge Current (IZSM) | 7.0 A peak (8.3 ms half-sine) - withstands transient overloads without failure |
| Thermal Resistance | 25 °C/W junction-to-lead (3/8″ lead length) - enables thermal design with discrete heatsinking |
| Operating Temperature | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-204AL), cathode identified by color band. Leads are tin-lead or RoHS-compliant matte tin, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference terminal | Connected to system ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal | Banded end; connected to regulated voltage rail - must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free plating and halogen-free epoxy per EU Directive 2011/65/EU |
| Tape-and-reel packaging | TR8 suffix denotes EIA-296 standard reel (8 mm tape, 1000 pcs/reel) for SMT placement compatibility |
| Low voltage regulation drift | ΔVZ = 0.25 V max ensures stable reference across 10–50% of IZM, critical for closed-loop control |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - no special handling required during assembly |
| Moisture sensitivity | Level 1 per J-STD-020B - eliminates baking requirement before reflow |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 13 V threshold to TL431 or optocoupler input. Use Value: Enables ±1% output regulation accuracy with minimal parts count and no external biasing. | Use Scenario: Protects downstream ICs from transient overvoltage on 12 V DC rails in automotive body control modules. IC Role / Device Role / Timing Role: Clamping element that conducts above 13.65 V (13 V × 1.05) to divert surge energy. Use Value: Absorbs 7.0 A surge (8.3 ms) without degradation, preserving load integrity during load-dump events. |
| Programmable Reference Source | Industrial Sensor Excitation |
Use Scenario: Provides stable excitation voltage for precision RTD or strain gauge bridges in data acquisition systems. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost bandgap references where 5% tolerance suffices. Use Value: Delivers 13 V ±0.65 V over –40 °C to +85 °C with <0.25 V regulation error, reducing calibration burden. | Use Scenario: Supplies regulated bias to 4–20 mA transmitter circuits in hazardous-area process instrumentation. IC Role / Device Role / Timing Role: Primary shunt regulator maintaining constant 13 V across variable sensor loads and loop impedance. Use Value: Maintains loop compliance with ≤2.5 Ω dynamic impedance, ensuring signal integrity despite cable capacitance and noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | Same 13 V, ±5%, 5 W rating but without e3 RoHS or TR8 tape-and-reel packaging | Requires manual placement or non-standard reels; not compliant with modern environmental directives | Select 1N5350E3/TR8 when RoHS compliance and automated assembly are mandatory |
| SMBJ5350B | Surface-mount SMB package, identical electrical specs, but 125 °C/W junction-to-ambient vs. 25 °C/W junction-to-lead | Limited to lower-power PCB layouts without discrete heatsinking; unsuitable for high-current shunt operation | Choose SMBJ5350B only for space-constrained designs where thermal management relies on board copper, not lead conduction |
Compared with 1N5350B and SMBJ5350B, the 1N5350E3/TR8 uniquely combines RoHS compliance, tape-and-reel automation readiness, and superior thermal performance via axial lead conduction - making it optimal for high-reliability, high-volume industrial power supplies requiring long-term component continuity.
Availability
1N5350E3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable reference sources requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 1N5350E3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal resilience, surge survivability, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5350E3/TR8?
The 1N5350E3/TR8 has a nominal Zener voltage of 13 V with ±5% tolerance, consistent with the "B" suffix in the 1N53xxB family. This means its actual regulation voltage falls between 12.35 V and 13.65 V at 100 mA test current and 25 °C lead temperature, as verified in the manufacturer's electrical characteristics table.
Does the 1N5350E3/TR8 require dry-packaging or baking before reflow soldering?
No, the 1N5350E3/TR8 has moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without desiccant or baking. Its void-free epoxy encapsulation and Level 1 rating eliminate pre-reflow bake cycles, simplifying manufacturing flow.
What is the maximum surge current rating for the 1N5350E3/TR8?
The 1N5350E3/TR8 is rated for 7.0 A peak non-recurrent surge current (IZSM) using an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table. This rating applies under proper mounting conditions and enables reliable operation during load-dump transients in automotive and industrial power systems.
How does the thermal resistance of the 1N5350E3/TR8 impact heatsink design?
The 1N5350E3/TR8 has a junction-to-lead thermal resistance of 25 °C/W at 3/8″ (10 mm) lead length. This allows direct conduction of heat through the leads to an external heatsink or chassis, enabling >3 W continuous dissipation with modest heatsinking - unlike surface-mount alternatives limited by board-conducted heat.
Is the 1N5350E3/TR8 compatible with lead-free reflow profiles?
Yes, the 1N5350E3/TR8 features RoHS-compliant matte-tin plating and is rated for 260 °C for 10 seconds, fully supporting standard lead-free reflow profiles (e.g., JEDEC J-STD-020). Its e3 suffix explicitly certifies compliance with lead-free assembly requirements.
1N5350E3/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:
- ±20%
- 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
1N5350E3/TR8 FAQ
1.How can I place an order for 1N5350E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350E3/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 1N5350E3/TR8 reliable?
The price and inventory of 1N5350E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5350E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350E3/TR8?
1N5350E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350E3/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 1N5350E3/TR8?
For technical support, including 1N5350E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350E3/TR8 requirements.
6.How does Aetrix verify that 1N5350E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5350E3/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 1N5350E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5350E3/TR8?
All 1N5350E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350E3/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 1N5350E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5350E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350E3/TR8 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
