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Microchip Technology 1N5353BE3/TR12
- Part No.:
- 1N5353BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5353BE3/TR12.pdf
- Description:
- DIODE ZENER 16V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,913
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Product details
Overview
1N5353BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 16 V, ±5% tolerance (B suffix), 2.5 Ω maximum dynamic impedance at 75 mA test current, and 75 mA maximum regulator current. 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 1N5353BE3/TR12 datasheet, 1N5353BE3/TR12 pinout, 1N5353BE3/TR12 application, or 1N5353BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (6.0 A), reverse leakage performance at 11.5 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. Its regulation stability relies on low dynamic impedance (2.5 Ω) at IZT = 75 mA and minimal voltage regulation drift (ΔVZ = 0.30 V between 10% and 50% of IZM). The T-18 axial package enables through-hole mounting with 0.7 g mass and UL94V-0 epoxy body.
It delivers 5.0 W steady-state power at lead temperature <25°C (3/8″ from body), derating linearly above that point. Thermal resistance is specified as 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4 with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal, ±5% tolerance - defines stable regulation point under 75 mA test current |
| Power Dissipation | 5.0 W at TL ≤ 25°C - requires heat sinking for sustained high-current operation |
| Dynamic Impedance (ZZ) | 2.5 Ω max at IZT = 75 mA - ensures minimal output voltage variation with load current changes |
| Max Regulator Current (IZM) | 75 mA - maximum continuous DC current before thermal runaway at rated power |
| Surge Current (IZSM) | 6.0 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Reverse Leakage (IR) | 1.0 μA max at VR = 11.5 V - guarantees low standby power loss in high-impedance bias networks |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable junction temperature rise with measured lead temperature |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-201AD standard; void-free UL94V-0 epoxy body; cathode indicated by band; leads plated with RoHS-compliant annealed matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; held at stable 16 V relative to anode when reverse current ≥ IZT |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, marking, and reliability testing across manufacturers |
| Moisture sensitivity Level 1 | No dry pack required prior to soldering - simplifies handling and eliminates bake step |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands human-body-model discharges without parameter shift |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU - tin-lead-free matte-tin plating compatible with lead-free reflow |
| High surge current capability | 6.0 A non-recurrent half-sine (8.3 ms) - protects downstream circuitry from line transients |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides precise 16 V reference for optocoupler-based feedback in isolated AC/DC converters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference in TL431-like error amplifier bias network. Use Value: Maintains ±5% output regulation across line/load variations due to low ΔVZ (0.30 V) and stable ZZ. | Use Scenario: Supplies stable excitation voltage to bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing fixed bias point for ratiometric analog signal conditioning. Use Value: Delivers <1.0 μA leakage at 11.5 V, minimizing offset error in high-impedance sensor interfaces. |
| Overvoltage Clamp for MCU I/O | Programmable Current Source Bias |
Use Scenario: Protects 16 V-tolerant GPIO pins from ESD and inductive kickback in motor control boards. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage excursion to 16.8 V (VZ + ΔVZ) during transients. Use Value: Absorbs 6.0 A surge (8.3 ms) without degradation - exceeds IEC 61000-4-5 Level 3 requirements. | Use Scenario: Sets reference current for constant-current LED drivers in signage applications requiring stable brightness. IC Role / Device Role / Timing Role: Precision current-setting element in series with base-emitter junction of pass transistor. Use Value: Enables 0.3% current stability via 2.5 Ω ZZ and tight ±5% VZ tolerance at 75 mA operating point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5353B | No e3 RoHS suffix; tin-lead plating instead of matte tin | Not compliant with lead-free assembly processes; requires Pb-containing solder | Select only for legacy Pb-based manufacturing or where RoHS exemption applies |
| MMBZ5245B | Surface-mount SOT-23 package; 16 V, ±5%, 0.5 W rating | Lower power handling (0.5 W vs. 5 W); unsuitable for high-current regulation or surge clamping | Choose for space-constrained PCBs where thermal dissipation is managed externally |
Compared with 1N5353B and MMBZ5245B, the 1N5353BE3/TR12 offers full 5 W power capability, axial-leaded mechanical robustness, and RoHS compliance - making it optimal for industrial power supplies and ruggedized overvoltage protection where board-level heat sinking is feasible.
Availability
1N5353BE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor references, overvoltage clamps, and programmable current source bias circuits requiring stable component supply and long-term obsolescence management.
Supply support for 1N5353BE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N53xxB series was developed for demanding voltage regulation tasks requiring wide temperature range operation, high surge immunity, and JEDEC-standardized form factor - especially in power conversion and protection subsystems.
FAQ
What is the Zener voltage tolerance of the 1N5353BE3/TR12?
The 1N5353BE3/TR12 has a nominal Zener voltage of 16 V with ±5% tolerance, as indicated by the "B" suffix in its part number. This means the actual regulation voltage falls between 15.2 V and 16.8 V at 75 mA test current and 25°C lead temperature. The tolerance is guaranteed across the full operating temperature range of –65°C to +150°C per Microsemi's published specifications.
Does the 1N5353BE3/TR12 require dry packing before soldering?
No, the 1N5353BE3/TR12 does not require dry packing before soldering. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it can be stored indefinitely at ambient conditions without desiccant or baking. This simplifies handling and eliminates pre-reflow bake steps in both leaded and lead-free assembly processes.
What is the maximum surge current rating for the 1N5353BE3/TR12?
The 1N5353BE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 6.0 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating enables reliable transient suppression in power rails and I/O protection circuits without degradation, provided the device is mounted with adequate thermal mass or heat sinking per Microsemi's derating curve.
How does the thermal resistance of the 1N5353BE3/TR12 affect its power handling?
The 1N5353BE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W at 3/8″ lead length. This means each watt of dissipated power raises the junction temperature 25°C above the measured lead temperature. At 25°C lead temperature, full 5 W operation is allowed; above that, power must be linearly derated - e.g., at 75°C lead temperature, maximum power drops to 3.75 W.
Is the 1N5353BE3/TR12 suitable for RoHS-compliant manufacturing?
Yes, the 1N5353BE3/TR12 is RoHS-compliant, as confirmed by the "e3" suffix in its part number. Its leads are plated with annealed matte tin per MIL-STD-750 Method 2026, fully compliant with EU Directive 2011/65/EU. It supports lead-free reflow profiles up to 260°C for 10 seconds and requires no exemptions for restricted substances.
1N5353BE3/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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 11.5 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
1N5353BE3/TR12 FAQ
1.How can I place an order for 1N5353BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5353BE3/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 1N5353BE3/TR12 reliable?
The price and inventory of 1N5353BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5353BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5353BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5353BE3/TR12 transactions.
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4.How is shipping managed for 1N5353BE3/TR12?
1N5353BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5353BE3/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 1N5353BE3/TR12?
For technical support, including 1N5353BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5353BE3/TR12 requirements.
6.How does Aetrix verify that 1N5353BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5353BE3/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 1N5353BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5353BE3/TR12?
All 1N5353BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5353BE3/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 1N5353BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5353BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5353BE3/TR12 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
onsemi
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