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Microchip Technology 1N5350E3/TR13
- Part No.:
- 1N5350E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350E3/TR13.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,092
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Product details
Overview
1N5350E3/TR13 from Microsemi is a 5.0 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/TR13 datasheet, 1N5350E3/TR13 pinout, 1N5350E3/TR13 application, or 1N5350E3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (7.0 A), reverse leakage performance at 9.4 V (≤1.0 µA), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference, conducting in reverse breakdown when cathode voltage exceeds anode by ≥13 V. Its low dynamic impedance (2.5 Ω) ensures stable regulation across 10–50% of IZM (10–50 mA), and its 25 °C/W thermal resistance enables reliable 5 W operation with 3/8″ lead length heat sinking.
Designed for DC voltage stabilization, it exhibits minimal voltage drift versus current (ΔVZ = 0.25 V) and withstands non-repetitive 8.3 ms half-sine surges up to 7.0 A. Polarity is marked by cathode band; operation requires banded end positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal, ±5% tolerance - defines precise regulation point for feedback networks |
| Test Current (IZT) | 100 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC resistance ensures tight voltage control under load transients |
| Max Regulator Current (IZM) | 100 mA - maximum continuous DC current at 25 °C with adequate heatsinking |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ at 10% and 50% of IZM, indicating line regulation quality |
| Surge Current (IZSM) | 7.0 A peak - handles 8.3 ms non-repetitive surges without degradation |
| Thermal Resistance | 25 °C/W junction-to-lead - enables full 5 W dissipation with 3/8″ (10 mm) lead length |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by colored band, RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026, weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; reverse-biased operation requires this terminal negative relative to cathode |
| Cathode | Regulated output node | Banded end; supplies stable 13 V to feedback divider or clamp circuit; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB series mechanical and electrical definitions |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - robust against electrostatic discharge during handling |
| High surge current capability | 7.0 A peak (8.3 ms half-sine) - protects downstream circuitry from transient overvoltage events |
| RoHS compliant (e3 suffix) | Lead-free matte-tin plating meets EU Directive 2011/65/EU and J-STD-609A Class 1 |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Precision 13 V reference for TL431-like shunt regulator circuits or direct feedback to PWM controller. Use Value: Tight ΔVZ (0.25 V) and low ZZ (2.5 Ω) minimize output voltage drift across line/load variations. | Use Scenario: Protecting microcontroller I/O pins or analog front-end inputs from accidental overvoltage events. IC Role / Device Role / Timing Role: Shunt clamping element that conducts above 13 V to divert excess current to ground. Use Value: 7.0 A surge rating absorbs transient energy without failure; 0.7 g mass supports mechanical reliability in vibration-prone environments. |
| Industrial Sensor Excitation | Programmable Voltage Reference |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift 13 V bias source replacing higher-cost IC references where moderate accuracy suffices. Use Value: ±5% tolerance and −65 °C to +150 °C operating range support wide-temperature industrial deployments. | Use Scenario: Setting threshold voltages in comparator-based level detection or window monitoring circuits. IC Role / Device Role / Timing Role: Fixed reference node defining upper trip point in dual-threshold safety interlocks. Use Value: Low 25 °C/W thermal resistance maintains regulation stability even with modest PCB copper area (4 mm² pads). |
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 with SnPb plating and no e3 RoHS designation | Not suitable for lead-free manufacturing; otherwise identical electrical behavior and thermal specs | Select 1N5350B only if legacy SnPb assembly process is mandated and RoHS compliance is not required |
| MMSZ5242B-TP | Surface-mount SOD-123 package, 12.5 V nominal, ±5%, 500 mW - lower power, different form factor | Used where board space is constrained and thermal budget is lower; not drop-in replacement due to package and power rating | Choose MMSZ5242B-TP only for compact PCB layouts accepting reduced power handling and different mounting method |
Compared with 1N5350B and MMSZ5242B-TP, the 1N5350E3/TR13 offers RoHS compliance, axial-leaded through-hole mounting for high-reliability mechanical retention, and full 5 W dissipation capability - making it optimal for industrial power supplies requiring long-term thermal stability and repairability.
Availability
1N5350E3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor excitation systems requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for 1N5350E3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized voltage regulation in harsh-environment power conversion and protection applications, emphasizing thermal robustness, surge resilience, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5350E3/TR13?
The 1N5350E3/TR13 has a nominal Zener voltage of 13 V with ±5% tolerance, consistent with the "B" suffix variant in the 1N53xxB family. This tolerance is verified per JEDEC registration and applies across the full operating temperature range of −65 °C to +150 °C. The e3 suffix confirms RoHS compliance but does not alter voltage specification.
Can the 1N5350E3/TR13 replace the 1N5350B in existing designs?
Yes, the 1N5350E3/TR13 is a direct functional and mechanical replacement for the 1N5350B, sharing identical electrical specifications (13 V, ±5%, 5 W, 100 mA IZM), T-18 package, and axial-leaded configuration. The only difference is RoHS-compliant matte-tin plating (e3) versus legacy SnPb plating on the 1N5350B - requiring requalification only for lead-free soldering profiles.
What is the maximum steady-state power dissipation of the 1N5350E3/TR13 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz Cu) with 4 mm² copper pads and 1 mm × 25 mm trace, the 1N5350E3/TR13 has a steady-state power rating of 1.47 W at 25 °C ambient. This derates linearly above 25 °C per the 85 °C/W junction-to-ambient thermal resistance specified in the datasheet.
Does the 1N5350E3/TR13 meet moisture sensitivity requirements without dry packing?
Yes, the 1N5350E3/TR13 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry pack or baking. This eliminates pre-assembly moisture mitigation steps and reduces handling cost in high-volume manufacturing.
What surge current rating does the 1N5350E3/TR13 support?
The 1N5350E3/TR13 supports a peak non-repetitive surge current (IZSM) of 7.0 A for an 8.3 ms half-sine waveform. This rating is validated per JEDEC test conditions and enables reliable transient suppression in power rails subject to inductive switching spikes or lightning-induced surges.
1N5350E3/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):
- 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/TR13 FAQ
1.How can I place an order for 1N5350E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350E3/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 1N5350E3/TR13 reliable?
The price and inventory of 1N5350E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5350E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350E3/TR13?
1N5350E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350E3/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 1N5350E3/TR13?
For technical support, including 1N5350E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350E3/TR13 requirements.
6.How does Aetrix verify that 1N5350E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5350E3/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 1N5350E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5350E3/TR13?
All 1N5350E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350E3/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 1N5350E3/TR13 part is unused and in its original packaging.
Return procedure for 1N5350E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350E3/TR13 Tags
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