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Microchip Technology 1N5353E3/TR12
- Part No.:
- 1N5353E3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5353E3/TR12.pdf
- Description:
- DIODE ZENER 16V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
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Product details
Overview
1N5353E3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 16 V, ±5% tolerance (B-suffix equivalent), 75 mA test current (IZT), 2.5 Ω dynamic impedance (ZZ), and 6.0 V maximum voltage regulation (ΔVZ) across 10–50% of IZM. It operates from –65°C to +150°C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5353E3/TR12 datasheet, 1N5353E3/TR12 pinout, 1N5353E3/TR12 application, or 1N5353E3/TR12 equivalent, key selection criteria include Zener voltage stability under varying load currents, low dynamic impedance at rated IZT, thermal resistance performance on FR4 PCBs, and RoHS-compliant matte-tin lead plating compatibility with standard reflow profiles.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining stable reverse-biased conduction above its specified breakdown voltage. Its operation relies on controlled avalanche and Zener mechanisms depending on voltage range, with verified regulation behavior at 75 mA IZT and defined knee impedance (ZZK = 295 Ω @ 1.0 mA).
The 1N5353E3/TR12 exhibits 25 °C/W junction-to-lead thermal resistance at 10 mm lead length and 85 °C/W junction-to-ambient when mounted on 1 oz Cu FR4 with 4 mm² pads - enabling reliable 5 W dissipation with appropriate heatsinking or board layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±5% - defines precise clamping threshold for overvoltage protection circuits |
| Test Current (IZT) | 75 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures minimal output voltage variation under load transients |
| Max Regulator Current (IZM) | 6.0 A - peak DC current capability at TL = 25°C with adequate heat sinking |
| Surge Current (IZSM) | 75 A - withstands non-repetitive 8.3 ms half-sine surges per MIL-STD-750 |
| Voltage Regulation (ΔVZ) | 0.30 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - ensures predictable forward conduction during fault conditions |
| Thermal Resistance (RθJL) | 25 °C/W - enables thermal design with discrete lead-length-based cooling paths |
Pinout & Package
Package: Axial-leaded T-18 molded epoxy case (JEDEC DO-201AD), cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in reverse bias / forward conduction terminal | Connected to lower-potential node; carries full IZM during regulation |
| Cathode (banded end) | Reference voltage output / Zener breakdown terminal | Provides stable 16 V reference relative to anode; must be held positive w.r.t. anode for regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions, marking, and test methodology across global supply chain |
| Moisture sensitivity Level 1 | No dry-pack required prior to assembly - reduces handling cost and floor-life constraints |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling protocols during manual or automated placement |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating and halogen-free epoxy body |
| High surge current rating (75 A) | Supports robust transient voltage suppression without external TVS augmentation |
Applications
| Industrial Power Supply Reference | Automotive Load Dump Protection |
|---|---|
Use Scenario: Stable 16 V reference generation for feedback loops in isolated DC-DC converters rated up to 50 W. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal to PWM controller via optocoupler-coupled feedback path. Use Value: Maintains ±0.30 V regulation across 0.6–3.0 A load steps, minimizing output voltage drift under line and load transients. | Use Scenario: Clamping induced transients during battery disconnection events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing up to 75 A surge energy within 8.3 ms window per ISO 7637-2 Pulse 5a. Use Value: Limits bus voltage to ≤18.5 V during 100 V/100 ms load dump, protecting downstream 16 V-rated CAN transceivers and microcontrollers. |
| Programmable Current Source Biasing | Field-Deployable Sensor Excitation |
Use Scenario: Setting bias current for high-precision op-amp-based constant-current drivers in metrology equipment. IC Role / Device Role / Timing Role: Voltage reference element establishing ISET via series resistor in Howland current source topology. Use Value: Delivers <±0.5% current accuracy over –40°C to +85°C due to tight 5% VZ tolerance and low ΔVZ. | Use Scenario: Providing excitation voltage to 4–20 mA loop-powered pressure sensors in oil & gas remote monitoring units. IC Role / Device Role / Timing Role: Primary voltage regulation stage ensuring stable 16 V rail despite wide input variations (9–36 V DC). Use Value: Enables sensor output linearity to ±0.1% FS by suppressing input ripple to <10 mVpp via low 2.5 Ω ZZ at 75 mA IZT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5353B | Same VZ (16 V), ±5%, but non-RoHS tin-lead plating; no e3 suffix | Not suitable for RoHS-compliant production; requires Pb-containing solder process | Select only for legacy repair or non-RoHS environments where leaded finish is acceptable |
| MMSZ5245B-TP | Surface-mount SOD-123 package; 16 V ±5%; 200 mW rating; higher ZZ (17 Ω) | Limited to low-power biasing; cannot replace 1N5353E3/TR12 in 5 W applications | Use only in space-constrained, low-current designs where thermal mass and surge immunity are secondary |
Compared with 1N5353B and MMSZ5245B-TP, the 1N5353E3/TR12 uniquely combines RoHS compliance, 5 W power handling, axial-leaded mechanical robustness, and 75 A surge capability - making it the sole choice for industrial-grade through-hole Zener regulation requiring long-term reliability and high-energy transient suppression.
Availability
1N5353E3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronics, programmable instrumentation, and field-deployable sensor systems requiring stable component supply and long-lifecycle support.
Supply support for 1N5353E3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized voltage regulation in harsh-environment power systems - emphasizing thermal resilience, surge survivability, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5353E3/TR12?
The 1N5353E3/TR12 has a nominal Zener voltage of 16 V with ±5% tolerance, consistent with the "B" suffix designation in the 1N53xxB family. This tolerance is verified at 75 mA test current and 25°C lead temperature, and applies across the full operating temperature range of –65°C to +150°C per Microsemi's published electrical characteristics table.
Does the 1N5353E3/TR12 meet RoHS requirements?
Yes, the 1N5353E3/TR12 is RoHS compliant, as confirmed by the "e3" suffix in its part number and Microsemi's documentation. It features annealed matte-tin plated leads and a halogen-free epoxy body meeting EU Directive 2011/65/EU, with no exemptions applied.
What is the maximum steady-state power dissipation for the 1N5353E3/TR12 on a standard FR4 PCB?
When mounted on a 1 oz copper FR4 PCB with 4 mm² copper pads and 1 mm track width (25 mm length), the 1N5353E3/TR12 has a steady-state power rating of 1.47 W at 25°C ambient temperature. Derating is required above 25°C per the published thermal resistance of 85°C/W junction-to-ambient.
Can the 1N5353E3/TR12 be used as a direct replacement for the 1N5353B?
Yes, the 1N5353E3/TR12 is functionally identical to the 1N5353B in all electrical and mechanical specifications except for lead finish: the "e3" suffix denotes RoHS-compliant matte-tin plating versus the tin-lead finish of the 1N5353B. No PCB layout changes are needed, but solder process parameters must align with lead-free reflow profiles.
What is the surge current rating of the 1N5353E3/TR12 and how is it defined?
The 1N5353E3/TR12 has a maximum non-repetitive surge current (IZSM) rating of 75 A, defined as the peak value of a single 8.3 ms half-sine waveform per MIL-STD-750 Method 3011. This rating supports transient suppression in automotive load-dump and industrial switching-inductive scenarios without degradation.
1N5353E3/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:
- ±20%
- 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
1N5353E3/TR12 FAQ
1.How can I place an order for 1N5353E3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5353E3/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 1N5353E3/TR12 reliable?
The price and inventory of 1N5353E3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5353E3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5353E3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5353E3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5353E3/TR12?
1N5353E3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5353E3/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 1N5353E3/TR12?
For technical support, including 1N5353E3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5353E3/TR12 requirements.
6.How does Aetrix verify that 1N5353E3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5353E3/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 1N5353E3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5353E3/TR12?
All 1N5353E3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5353E3/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 1N5353E3/TR12 part is unused and in its original packaging.
Return procedure for 1N5353E3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5353E3/TR12 Tags
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