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Microchip Technology 1N5354CE3/TR12
- Part No.:
- 1N5354CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354CE3/TR12.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
1N5354CE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±2% tolerance (C suffix), 70 mA maximum Zener test current (IZT), 280 Ω maximum dynamic impedance (ZZ) at IZT, and 5.8 A maximum Zener current (IZM) when adequately heat-sunk. It serves as a precision voltage reference or shunt regulator in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N5354CE3/TR12 datasheet, 1N5354CE3/TR12 pinout, 1N5354CE3/TR12 application, or 1N5354CE3/TR12 equivalent, key selection criteria include its ±2% voltage tolerance, low 280 Ω dynamic impedance at 70 mA, 5.8 A surge-capable IZM, RoHS-compliant e3 plating, and TR12 tape-and-reel packaging for automated assembly.
Technical Context
This device operates as a reverse-biased shunt regulator, maintaining stable 17 V output across a wide current range (1.0 mA to 5.8 A) with minimal voltage drift. Its 25 °C/W junction-to-lead thermal resistance enables high-power operation when mounted with ≥10 mm lead length from body.
It exhibits 0.35 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM, and 280 Ω maximum dynamic impedance measured at 1 kHz with 10% AC ripple superimposed on DC IZT - confirming tight regulation under dynamic load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17.0 V ±2% at 70 mA - ensures precise reference stability for feedback networks requiring tight voltage accuracy. |
| Power Dissipation | 5.0 W at TL = 25°C with 10 mm lead length - supports robust shunt regulation without forced cooling in compact designs. |
| Dynamic Impedance (ZZ) | 280 Ω max at 70 mA - minimizes output voltage variation under changing load currents. |
| Max Zener Current (IZM) | 5.8 A - enables high-energy transient suppression and sustained regulation under heavy load conditions. |
| Reverse Leakage (IR) | 0.5 μA max at 12.2 V - guarantees negligible standby current in battery-powered or low-power systems. |
| Thermal Resistance | 25 °C/W junction-to-lead - allows direct thermal path to PCB copper or chassis for reliable 5 W operation. |
| Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - withstands common-line surges and inductive kickback events. |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-201AD standard; cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to system ground or lower-potential rail; defines reference point for Zener regulation. |
| Cathode | Zener regulation terminal / output node | Banded end; connected to regulated voltage node; sinks current to maintain 17 V across load. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables use in precision feedback paths without external trimming, reducing BOM count and calibration steps. |
| RoHS-compliant e3 plating | Meets global environmental compliance requirements and ensures solderability with standard reflow profiles (260°C/10 s). |
| Tape-and-reel TR12 packaging | Supports high-volume automated pick-and-place assembly with industry-standard EIA-296 carrier tape. |
| Level 1 moisture sensitivity | Eliminates baking preconditioning before assembly, reducing manufacturing cycle time and handling risk. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits safe handling in standard production environments without special ESD controls. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 17 V reference to TL431 or similar error amplifier. Use Value: ±2% tolerance ensures output accuracy within ±1% over line/load/temperature, eliminating need for post-production trim. |
Use Scenario: Clamping transient overvoltage on 15 V rail caused by inductive load switching or ESD events. IC Role / Device Role / Timing Role: Passive shunt clamp absorbing energy above 17 V threshold until crowbar or shutdown activates. Use Value: 75 A surge rating and 5.8 A steady-state IZM allow repeated clamping without degradation, extending system reliability. |
| Industrial Sensor Excitation | Programmable Reference Source |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges) in harsh temperature environments. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed 17 V bias independent of supply fluctuations. Use Value: Low 0.35 V ΔVZ and 280 Ω ZZ ensure sensor output linearity remains unaffected by current variations up to 5.8 A. |
Use Scenario: Generating calibrated reference voltage for ADC/DAC biasing in test equipment or calibration standards. IC Role / Device Role / Timing Role: Primary voltage reference element in multi-stage reference chain with buffered output. Use Value: Tight ±2% tolerance and low thermal resistance (25 °C/W) minimize drift during extended warm-up periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B | Same 17 V nominal voltage, but ±5% tolerance (B suffix) and non-RoHS tin-lead plating. | Suitable where cost sensitivity outweighs environmental compliance or tighter tolerance needs. | Select 1N5354B only if RoHS exemption applies and ±5% regulation accuracy is acceptable. |
| SMBJ5354CE3 | Surface-mount SMB package (JEDEC DO-214AA), identical 17 V ±2% specs, same e3 RoHS plating. | Used in space-constrained or high-density layouts where axial leads are incompatible with automated routing. | Choose SMBJ5354CE3 when board real estate or assembly process requires SMT instead of through-hole mounting. |
Compared with 1N5354B and SMBJ5354CE3, the 1N5354CE3/TR12 uniquely combines ±2% tolerance, RoHS compliance, axial-leaded T-18 packaging, and TR12 tape-and-reel - making it optimal for high-accuracy, environmentally compliant, high-volume through-hole production.
Availability
1N5354CE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and precision sensor excitation systems requiring stable component supply and full traceability.
Supply support for 1N5354CE3/TR12 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 voltage regulation in demanding environments - emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5354CE3/TR12?
The 1N5354CE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its nominal 17 V regulation voltage falls within 16.66 V to 17.34 V at 70 mA test current and 25°C lead temperature - critical for precision feedback and reference applications where tighter accuracy than standard ±5% parts is required.
Does the 1N5354CE3/TR12 require dry-packaging or baking before assembly?
No, the 1N5354CE3/TR12 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and does not require dry-packaging or pre-assembly baking. This simplifies handling and eliminates moisture-related popcorning risks during reflow, supporting direct use from sealed TR12 tape reels.
What is the maximum surge current rating for the 1N5354CE3/TR12?
The 1N5354CE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 75 A, defined as the peak of an 8.3 ms half-sine waveform. This rating enables reliable clamping of common power-line transients and inductive switching spikes without degradation, provided the device is properly heat-sunk and operated within its thermal limits.
How does the thermal resistance of the 1N5354CE3/TR12 affect its power handling?
The 1N5354CE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W when mounted with 10 mm lead length from the body. At 25°C ambient, this allows full 5 W dissipation; above 25°C, derating follows the curve in Figure 1. For example, at 75°C lead temperature, usable power drops to 2.5 W - so thermal design must prioritize lead conduction over PCB convection.
Is the 1N5354CE3/TR12 compatible with lead-free reflow processes?
Yes, the 1N5354CE3/TR12 features RoHS-compliant matte-tin plating (e3 suffix) and is qualified for soldering at 260°C for up to 10 seconds - fully compatible with standard lead-free reflow profiles. Its void-free thermosetting epoxy body (UL94V-0 rated) also withstands multiple thermal cycles without delamination or cracking.
1N5354CE3/TR12 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):
- 17 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 12.2 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
1N5354CE3/TR12 FAQ
1.How can I place an order for 1N5354CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354CE3/TR12 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 1N5354CE3/TR12 reliable?
The price and inventory of 1N5354CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5354CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354CE3/TR12?
1N5354CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354CE3/TR12 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 1N5354CE3/TR12?
For technical support, including 1N5354CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354CE3/TR12 requirements.
6.How does Aetrix verify that 1N5354CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5354CE3/TR12 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 1N5354CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5354CE3/TR12?
All 1N5354CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354CE3/TR12, 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 1N5354CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5354CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354CE3/TR12 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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SMAZ12-13-F
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