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Microchip Technology 1N5356E3/TR8
- Part No.:
- 1N5356E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5356E3/TR8.pdf
- Description:
- DIODE ZENER 19V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,791
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Product details
Overview
1N5356E3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 19 V, ±5% tolerance (B-suffix equivalent), 65 mA test current (IZT), 3.0 Ω maximum dynamic impedance (ZZ), and 75 mA maximum regulator current (IZM). 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 1N5356E3/TR8 datasheet, 1N5356E3/TR8 pinout, 1N5356E3/TR8 application, or 1N5356E3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (20 A), voltage regulation (ΔVZ = 0.40 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference, operating in reverse breakdown with cathode-banded polarity. Its regulation performance is specified at 25 °C lead temperature (TL), with voltage measured 40 ±10 ms after DC current application and dynamic impedance derived from 1 kHz AC modulation at 10% of IZT.
The 1N5356E3/TR8 exhibits low voltage regulation (ΔVZ = 0.40 V between 10% and 50% of IZM), tight dynamic knee impedance (ZZK = 250 Ω @ 1.0 mA), and high surge capability (20 A half-sine, 8.3 ms) - enabling stable clamping under transient load conditions without thermal runaway when properly heat-sunk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19 V ±5% - sets precise clamp/reference level in feedback or protection circuits |
| Test Current (IZT) | 65 mA - defines operating point where VZ and ZZ are guaranteed |
| Dynamic Impedance (ZZ) | 3.0 Ω max - ensures minimal output voltage shift under varying load current |
| Max Regulator Current (IZM) | 75 mA - maximum continuous DC current before exceeding 5 W power limit at TL = 25°C |
| Voltage Regulation (ΔVZ) | 0.40 V - difference between VZ at 10% and 50% of IZM, indicating regulation linearity |
| Surge Current (IZSM) | 20 A - peak non-repetitive half-sine (8.3 ms) clamping capability for transient suppression |
| Thermal Resistance | 25 °C/W junction-to-lead - enables high-power operation with simple lead-length heat sinking |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Banded end | Connected to higher-potential node; defines regulated output voltage referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT reflow compatibility |
| Nonsensitive to ESD | Rated per MIL-STD-750 Method 1020 - no special handling needed in assembly |
| High surge withstand | 20 A peak (8.3 ms) supports robust overvoltage protection in industrial power rails |
| Low ΔVZ (0.40 V) | Delivers stable reference voltage across 10–50% IZM range, critical for precision feedback |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated 24 V DC-DC converter to regulate output within ±1%. IC Role / Device Role / Timing Role: Zener voltage reference establishing error amplifier threshold; replaces TL431 in cost-sensitive designs. Use Value: 19 V VZ provides headroom above 24 V rail while maintaining margin against 28 V transients; 0.40 V ΔVZ ensures <0.2% output drift over load variation. | Use Scenario: Placed across 24 V PLC I/O module power rail to clamp surges from inductive load switching. IC Role / Device Role / Timing Role: Two-terminal shunt protector absorbing energy during 100 V/1 µs fast transients. Use Value: 20 A surge rating and 25 °C/W thermal resistance allow single-device clamping without external heatsink under repetitive 50 A surge tests. |
| Programmable Reference Source | Automotive Battery Monitor Threshold |
Use Scenario: Paired with resistor divider to generate adjustable 5 V reference for ADC input scaling in sensor interface board. IC Role / Device Role / Timing Role: Stable voltage reference node; combined with precision resistors to set scaling ratio. Use Value: ±5% tolerance and 3.0 Ω ZZ ensure reference stability within 0.5% over 1–10 mA load range, meeting 12-bit ADC accuracy requirements. | Use Scenario: Detecting battery overcharge condition (>14.8 V) in 12 V automotive body control module. IC Role / Device Role / Timing Role: Reverse-biased threshold detector triggering comparator when battery exceeds 19 V reference. Use Value: -65°C to +150°C operating range and MIL-grade screening options support under-hood deployment; 0.5 µA IR at 15.2 V ensures negligible standby leakage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | No e3 RoHS suffix; SnPb lead finish; same VZ, IZT, ZZ, IZM, and package | Not compliant with EU RoHS Directive 2011/65/EU; restricted for new designs in regulated markets | Select 1N5356B only for legacy repair or non-RoHS environments requiring SnPb solder compatibility |
| MMSZ5247ET1G | Surface-mount SOD-123 package; 19 V ±5%; 20 mA IZT; 30 Ω ZZ; 1 W power rating | Limited to low-power applications; unsuitable for 5 W continuous dissipation or high-surge scenarios | Choose MMSZ5247ET1G only for space-constrained PCBs where thermal mass and surge demands are ≤1 W and ≤1 A |
Compared with 1N5356B and MMSZ5247ET1G, the 1N5356E3/TR8 uniquely delivers 5 W power handling, 20 A surge capability, and RoHS compliance in an axial-leaded T-18 package - making it optimal for industrial power regulation where reliability, thermal robustness, and regulatory compliance are jointly required.
Availability
1N5356E3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive battery monitors, programmable references, and overvoltage protection circuits requiring stable component supply across extended temperature ranges and high-reliability environments.
Supply support for 1N5356E3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed as a JEDEC-standardized family of 5 W axial Zeners to deliver stable voltage regulation across harsh environments - emphasizing thermal robustness, surge resilience, and long-term parametric stability under wide temperature excursions.
FAQ
What is the Zener voltage tolerance of the 1N5356E3/TR8?
The 1N5356E3/TR8 has a nominal Zener voltage of 19 V with ±5% tolerance, consistent with the "B" suffix designation in the 1N53xxB family. This tolerance is verified at 25 °C lead temperature with 65 mA test current and applies across the full operating temperature range of –65°C to +150°C.
Does the 1N5356E3/TR8 require dry packing before PCB assembly?
No, the 1N5356E3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and does not require dry pack or floor-life controls prior to reflow soldering - simplifying logistics and eliminating bake-out steps in manufacturing.
What is the maximum continuous power dissipation for the 1N5356E3/TR8 at 25°C ambient?
When mounted on FR4 with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm trace, the 1N5356E3/TR8 dissipates up to 1.47 W continuously at 25°C ambient. At 25°C lead temperature (3/8″ from body), it sustains the full 5 W rating - requiring adequate lead-length heat sinking for full-power operation.
Can the 1N5356E3/TR8 be used as a direct replacement for the 1N5356B?
Yes, the 1N5356E3/TR8 is electrically and mechanically identical to the 1N5356B except for RoHS-compliant matte-tin plating instead of SnPb. Both share identical VZ, IZT, ZZ, IZM, package dimensions, and thermal characteristics - making them drop-in replacements where RoHS compliance is required.
What is the reverse leakage current specification for the 1N5356E3/TR8 at 15.2 V?
At VR = 15.2 V (80% of 19 V nominal), the 1N5356E3/TR8 exhibits a maximum reverse leakage current (IR) of 0.5 µA, as specified for B-suffix devices in the 1N53xxB family. This low leakage supports high-impedance sensing and low-quiescent-current applications.
1N5356E3/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):
- 19 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13.7 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
1N5356E3/TR8 FAQ
1.How can I place an order for 1N5356E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5356E3/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 1N5356E3/TR8 reliable?
The price and inventory of 1N5356E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5356E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5356E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5356E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5356E3/TR8?
1N5356E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5356E3/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 1N5356E3/TR8?
For technical support, including 1N5356E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5356E3/TR8 requirements.
6.How does Aetrix verify that 1N5356E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5356E3/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 1N5356E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5356E3/TR8?
All 1N5356E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5356E3/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 1N5356E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5356E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5356E3/TR8 Tags
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