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Microchip Technology 1N5356CE3/TR8
- Part No.:
- 1N5356CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5356CE3/TR8.pdf
- Description:
- DIODE ZENER 19V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,331
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Product details
Overview
1N5356CE3/TR8 from Microsemi is a 5 W axial-leaded Zener diode with nominal regulation voltage of 19 V, ±2% tolerance (C suffix), 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 1N5356CE3/TR8 datasheet, 1N5356CE3/TR8 pinout, 1N5356CE3/TR8 application, or 1N5356CE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 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 diode operating in reverse breakdown. Its regulation performance is defined at 25 °C with 65 mA test current and validated across -65 °C to +150 °C ambient range. The 1N5356CE3/TR8 exhibits low dynamic impedance (3.0 Ω) and tight voltage regulation (ΔVZ = 0.40 V), enabling stable reference generation under varying load conditions.
It uses void-free thermosetting epoxy encapsulation (UL94V-0), cathode band polarity marking, and is rated for 260 °C soldering (10 s max). Thermal resistance is specified as 25 °C/W junction-to-lead at 3/8" (10 mm) lead length - critical for heatsink-dependent high-current operation up to 75 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19 V ±2% - precise reference for feedback networks requiring tight tolerance |
| Test Current (IZT) | 65 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 3.0 Ω max - low AC impedance ensures minimal voltage shift under ripple current |
| Max Regulator Current (IZM) | 75 mA - maximum continuous DC current before thermal derating applies |
| Voltage Regulation (ΔVZ) | 0.40 V - difference between VZ measured at 10% and 50% of IZM, indicating stability |
| Surge Current (IZSM) | 75 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead value enables thermal design with mechanical heatsinking |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), void-free UL94V-0 epoxy body, cathode indicated by colored band. Leads are annealed matte-tin plated (RoHS compliant, e3 suffix), solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal / Voltage reference output | Banded end; connected to regulated voltage node - must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy feedback without external trimming in SMPS and LDO references |
| Low dynamic impedance (3.0 Ω) | Minimizes output voltage variation under dynamic load changes in regulation circuits |
| 75 A surge current rating | Provides robust transient immunity in industrial power rails and input protection stages |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to assembly - reduces manufacturing cost |
| RoHS-compliant matte-tin plating | Ensures reliable solderability and long-term intermetallic stability per MIL-STD-750 |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Precision voltage reference providing error signal to primary-side controller via optocoupler. Use Value: ±2% VZ tolerance and low ΔVZ (0.40 V) ensure <±1% output regulation accuracy across line/load/temperature. | Use Scenario: Placed across DC bus rails in motor drives to clamp transients exceeding safe operating limits. IC Role / Device Role / Timing Role: Two-terminal shunt protector absorbing energy during inductive kickback events. Use Value: 75 A surge rating and 5 W steady-state dissipation enable reliable clamping without degradation after repeated 8.3 ms surges. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Paired with resistive dividers in analog front-ends to generate stable bias voltages for ADCs and amplifiers. IC Role / Device Role / Timing Role: Primary reference source establishing known potential for precision measurement circuits. Use Value: Low ZZ (3.0 Ω) and minimal VZ drift (<0.40 V ΔVZ) maintain reference integrity despite varying sensor loading currents. | Use Scenario: Supplies excitation voltage to bridge-based pressure/strain sensors in harsh industrial environments. IC Role / Device Role / Timing Role: Stable 19 V reference ensuring consistent sensor output scaling and ratiometric accuracy. Use Value: Wide temperature range (-65°C to +150°C) and moisture-insensitive packaging support operation in uncontrolled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | Same 19 V nominal VZ but ±5% tolerance (B suffix); higher ZZ (3.0 Ω vs. 3.0 Ω same), identical IZM (75 mA) | Acceptable where tighter tolerance not required; lower cost due to relaxed screening | Select when ±5% regulation accuracy suffices and cost sensitivity outweighs precision needs |
| MMSZ5247ET1G | Surface-mount SOD-123 package; 19 V ±5%; 20 mA IZT; 500 mW power rating; 30 Ω ZZ | Not suitable for 5 W power handling; limited to low-power bias/reference roles | Choose only for space-constrained PCBs where thermal management precludes axial-leaded devices |
Compared with 1N5356B and MMSZ5247ET1G, the 1N5356CE3/TR8 delivers superior precision (±2% vs. ±5%), higher power handling (5 W vs. 0.5 W), and proven axial-leaded reliability in high-surge industrial systems - making it optimal for mains-connected power regulation and protection.
Availability
1N5356CE3/TR8 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5356CE3/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 1N53xx series was designed for ruggedized voltage regulation in mission-critical power systems - emphasizing thermal robustness, surge resilience, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of the 1N5356CE3/TR8?
The 1N5356CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its nominal 19 V regulation voltage falls within 18.62 V to 19.38 V at 25 °C with 65 mA test current. This tight tolerance supports high-accuracy feedback loops in precision power supplies where minimal output deviation is required across temperature and aging.
What is the maximum continuous current the 1N5356CE3/TR8 can handle?
The 1N5356CE3/TR8 has a maximum regulator current (IZM) of 75 mA at 25 °C lead temperature, assuming adequate heat sinking. This rating assumes a thermal resistance of 25 °C/W junction-to-lead at 3/8" (10 mm) lead length. Derating is required above 25 °C - for example, at 75 °C lead temperature, usable IZM drops to approximately 50 mA based on linear derating curves in the official datasheet.
Is the 1N5356CE3/TR8 RoHS compliant?
Yes, the 1N5356CE3/TR8 is RoHS compliant, confirmed by the "e3" suffix in its part number. It features annealed matte-tin plating on leads per MIL-STD-750 Method 2026 and void-free UL94V-0 epoxy encapsulation. Microsemi's documentation explicitly states RoHS compliance for all e3-suffixed variants in the 1N5333B–1N5388B family, with no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE content above threshold limits.
What does the "TR8" suffix indicate in 1N5356CE3/TR8?
The "TR8" suffix indicates tape-and-reel packaging per EIA-296 standard, with 800 units per reel. This format supports automated SMT placement equipment despite the device being axial-leaded - the reels contain carrier tape with pockets sized for T-18 axial components. The TR8 option simplifies high-volume manufacturing and ensures consistent feeding in pick-and-place systems.
How does the 1N5356CE3/TR8 perform under surge conditions?
The 1N5356CE3/TR8 is rated for a maximum non-repetitive surge current (IZSM) of 75 A, defined as the peak of an 8.3 ms half-sine waveform. This capability allows it to absorb transient energy in industrial power rails, motor drive snubbers, and telecom line protection. Its 5 W steady-state power rating and low thermal resistance (25 °C/W) ensure recovery after such events without parametric shift or failure, provided surge repetition rate remains low.
1N5356CE3/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:
- ±2%
- 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
1N5356CE3/TR8 FAQ
1.How can I place an order for 1N5356CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5356CE3/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 1N5356CE3/TR8 reliable?
The price and inventory of 1N5356CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5356CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5356CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5356CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5356CE3/TR8?
1N5356CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5356CE3/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 1N5356CE3/TR8?
For technical support, including 1N5356CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5356CE3/TR8 requirements.
6.How does Aetrix verify that 1N5356CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5356CE3/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 1N5356CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5356CE3/TR8?
All 1N5356CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5356CE3/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 1N5356CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5356CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5356CE3/TR8 Tags
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