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Microchip Technology 1N5354BE3/TR12
- Part No.:
- 1N5354BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5354BE3/TR12.pdf
- Description:
- DIODE ZENER 17V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,373
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Product details
Overview
1N5354BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±5% tolerance (B suffix), maximum dynamic impedance of 2.5 Ω at 70 mA test current, and maximum reverse current of 0.5 μA at 12.2 V. 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 1N5354BE3/TR12 datasheet, 1N5354BE3/TR12 pinout, 1N5354BE3/TR12 application, or 1N5354BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (5.8 A), voltage regulation (ΔVZ = 0.35 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its Zener voltage is specified at 70 mA (IZT), with dynamic impedance measured at 1 kHz AC superimposed on DC bias - confirming stable regulation under varying load conditions.
The 1N5354BE3/TR12 features low thermal resistance (25 °C/W junction-to-lead at 10 mm lead length) and high surge current capability (5.8 A, 8.3 ms half-sine), enabling reliable operation in transient-prone industrial power rails without external heat sinking beyond standard axial mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V ±5% - precise reference point for feedback networks in regulated DC-DC converters. |
| Test Current (IZT) | 70 mA - standardized bias condition ensuring repeatable VZ measurement and circuit design consistency. |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC impedance ensures minimal output voltage variation across load changes. |
| Max Reverse Current (IR) | 0.5 μA at 12.2 V - ultra-low leakage preserves regulation integrity in high-impedance sensing paths. |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - supports continuous operation in compact power supplies with adequate lead heatsinking. |
| Surge Current (IZSM) | 5.8 A (8.3 ms half-sine) - withstands common-line transients without degradation or failure. |
| Voltage Regulation (ΔVZ) | 0.35 V - difference between VZ at 10% and 50% of IZM, quantifying regulation linearity over operating range. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; reverse-biased configuration places cathode at higher potential. |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated node (e.g., feedback divider tap); must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures cross-manufacturer compatibility and standardized electrical behavior per 1N53xxB series definition. |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling, storage, and assembly logistics for production environments. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD controls during board assembly or field service. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU and China RoHS II requirements for lead-free electronics manufacturing. |
| High surge current endurance | 5.8 A peak (8.3 ms) enables use in unfiltered input stages without external TVS devices. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback loop via optocoupler-coupled TL431 replacement. IC Role / Device Role / Timing Role: Zener reference element setting precise 17 V threshold for error amplifier biasing. Use Value: ±5% VZ tolerance and 0.35 V ΔVZ ensure <±1.5% output regulation across line/load/temperature. |
Use Scenario: Clamps transient spikes on 24 V industrial control bus during relay switching or inductive load turn-off. IC Role / Device Role / Timing Role: Two-terminal shunt protector diverting excess energy to ground when bus exceeds 17 V. Use Value: 5.8 A surge rating and 25 °C/W thermal resistance allow single-device clamping without derating at 70 °C ambient. |
| Programmable Reference Source | Temperature-Stable Bias Generator |
Use Scenario: Provides fixed 17 V reference for DAC output scaling in programmable logic controller analog output modules. IC Role / Device Role / Timing Role: Precision voltage source feeding resistor-divider network to generate user-configurable 0–10 V outputs. Use Value: Low 0.5 μA reverse leakage at 12.2 V prevents loading errors in high-impedance divider arms. |
Use Scenario: Establishes stable bias point for op-amp input stage in wide-temperature-range sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Temperature-compensated reference node compensating for op-amp input offset drift. Use Value: –65 °C to +150 °C operating range and low ΔVZ ensure <±2 mV drift over full industrial temperature span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5354B (non-e3, tape-and-reel not standard) | Same electrical specs but SnPb lead finish; no RoHS compliance; TR12 packaging not guaranteed. | Acceptable only in legacy non-RoHS designs; requires separate reel qualification for automated placement. | Select 1N5354B only if SnPb solder process is mandated and environmental compliance is waived. |
| MMSZ5246B (ON Semiconductor) | Surface-mount SOD-123 package; 17 V ±5%; 500 mW rating; 10x lower power than 1N5354BE3/TR12. | Suitable for space-constrained PCBs but cannot replace 1N5354BE3/TR12 in 5 W thermal environments without parallel devices. | Choose MMSZ5246B only for low-power signal-level referencing where board area is critical and power <0.5 W. |
Compared with 1N5354B and MMSZ5246B, the 1N5354BE3/TR12 uniquely delivers 5 W power handling in an axial package with RoHS compliance and verified 5.8 A surge capability - making it the sole option for robust, through-hole, high-energy voltage regulation in industrial power systems.
Availability
1N5354BE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and programmable instrumentation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5354BE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems - emphasizing thermal robustness, surge resilience, and long-term parametric stability over commercial-grade alternatives.
FAQ
What is the Zener voltage tolerance of the 1N5354BE3/TR12?
The 1N5354BE3/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 17 V regulation voltage falls within 16.15 V to 17.85 V at 70 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging per EIA-296 standards.
Can the 1N5354BE3/TR12 be used in surface-mount designs?
No - the 1N5354BE3/TR12 uses an axial-leaded T-18 package and is not compatible with surface-mount assembly processes. For SMT equivalents, Microsemi offers the SMBJ5354B series, while ON Semiconductor's MMSZ5246B provides a 17 V, ±5% SOD-123 alternative - though rated only at 500 mW versus the 5 W capability of the 1N5354BE3/TR12.
What is the maximum steady-state power dissipation of the 1N5354BE3/TR12 on a standard PCB?
When mounted on a FR4 PCB with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5354BE3/TR12 delivers 1.47 W steady-state power at 25 °C ambient. Its thermal resistance rises to 85 °C/W in this configuration, requiring derating above 25 °C - unlike its 5 W rating at 25 °C lead temperature with 10 mm lead heatsinking.
Does the 1N5354BE3/TR12 require dry-pack moisture protection before reflow?
No - the 1N5354BE3/TR12 carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1, meaning it may be stored and processed indefinitely at ambient conditions without baking or dry-pack requirements. This eliminates moisture-related popcorning risk during standard IR or convection reflow profiles up to 260 °C for 10 seconds.
How does the voltage regulation (ΔVZ) specification apply to the 1N5354BE3/TR12?
The 1N5354BE3/TR12 specifies ΔVZ = 0.35 V, defined as the difference between Zener voltage measured at 10% and 50% of its maximum Zener current (IZM). This quantifies regulation linearity - a lower ΔVZ indicates tighter voltage stability across operating current range, critical for precision feedback and reference applications.
1N5354BE3/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:
- ±5%
- 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
1N5354BE3/TR12 FAQ
1.How can I place an order for 1N5354BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5354BE3/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 1N5354BE3/TR12 reliable?
The price and inventory of 1N5354BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5354BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5354BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5354BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5354BE3/TR12?
1N5354BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5354BE3/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 1N5354BE3/TR12?
For technical support, including 1N5354BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5354BE3/TR12 requirements.
6.How does Aetrix verify that 1N5354BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5354BE3/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 1N5354BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5354BE3/TR12?
All 1N5354BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5354BE3/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 1N5354BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5354BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5354BE3/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
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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