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onsemi 1N5353B
- Part No.:
- 1N5353B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5353B.pdf
- Description:
- DIODE ZENER 16V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,748
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Product details
Overview
1N5353B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 16 V (±5%), maximum zener impedance of 75 Ω at 2.5 mA test current, 295 mA maximum DC zener current, and 6.0 V reverse leakage current limit at 12.2 V. It operates in power supply voltage regulation and overvoltage protection circuits for industrial control modules.
For engineers reviewing the 1N5353B datasheet, pinout, applications, or equivalent options, key selection criteria include its ±5% tolerance, 75 Ω dynamic impedance at IZT = 2.5 mA, 295 mA IZM rating, 16 V nominal regulation point, and axial leaded Surmetic 40 package compatibility with through-hole PCB assembly.
Technical Context
This device uses silicon-oxide passivated junction technology to achieve tight voltage tolerance and stable regulation under varying thermal conditions. Its 5 W steady-state power dissipation is rated at TL = 25°C with 3/8″ lead length, and it supports non-repetitive surge currents up to 295 A for 8.3 ms pulses.
The 1N5353B exhibits a positive temperature coefficient above 5 V, with typical TC ≈ +0.085 mV/°C per volt near its 16 V operating point. Its cathode band marking and axial lead configuration define unambiguous polarity for series-shunt regulation topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.2–16.8 V (±5% tolerance, nominal 16 V at IZT = 2.5 mA) |
| Zener Impedance (ZZT) | 75 Ω max at IZT = 2.5 mA - ensures low regulation error under load transients |
| Max DC Zener Current (IZM) | 295 mA - derived from 5 W / 16.8 V, defines safe continuous conduction limit |
| Leakage Current (IR) | 0.3 mA max at VR = 12.2 V - guarantees minimal standby power loss in shunt regulators |
| Surge Current (IRM) | 295 A peak @ 8.3 ms - enables transient overvoltage clamping without failure |
| Junction-to-Lead RθJL | 25 °C/W - determines thermal rise from leads to junction during sustained operation |
| ESD Rating | Class 3 (>16 kV HBM) - supports handling in standard manufacturing environments without special ESD controls |
Pinout & Package
Package: Axial-lead Surmetic 40 plastic case (JEDEC CASE 017AA), void-free transfer-molded thermosetting material, corrosion-resistant finish, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference node in shunt regulator | Connected to lower-potential rail; carries full load current when regulating |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential rail; maintains stable 16 V relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables ±5% VZ tolerance and long-term stability across temperature and time |
| 5 W steady-state power rating | Supports robust shunt regulation in 12–24 V industrial power rails without heatsinking |
| 295 A 8.3 ms surge capability | Clamps lightning-induced or inductive-switching transients without degradation |
| Pb-free axial package (RoHS compliant) | Meets global environmental compliance requirements for industrial and automotive end equipment |
| Class 3 ESD immunity (>16 kV HBM) | Eliminates need for additional input-stage ESD protection in board-level designs |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 16 V reference in isolated DC-DC converter feedback loops for PLC I/O modules. IC Role / Device Role / Timing Role: Shunt regulator providing precise voltage clamp for optocoupler-based error amplification. Use Value: Maintains ±1% output regulation across −40°C to +125°C ambient with <75 Ω dynamic impedance. | Use Scenario: Generating stable 16 V bias for microcontroller ADC reference and sensor excitation in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference source replacing active regulators where low quiescent current is critical. Use Value: Delivers 0.3 mA leakage at 12.2 V, minimizing battery drain during vehicle sleep mode. |
| Overvoltage Protection Circuit | Test Equipment Calibration Reference |
Use Scenario: Clamping 24 V bus surges in factory automation motor drives to protect downstream logic ICs. IC Role / Device Role / Timing Role: Transient voltage suppressor activated during >20 V events, diverting excess energy to ground. Use Value: Withstands 295 A 8.3 ms surges without parameter shift, ensuring field reliability. | Use Scenario: Providing traceable 16 V calibration point in portable multimeter internal reference subsystems. IC Role / Device Role / Timing Role: Primary voltage standard in self-calibrating measurement front-ends. Use Value: ±5% initial tolerance and <0.085 mV/°C/°C TC enable <0.1% total uncertainty over 0–50°C range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5353A | ±10% tolerance (vs. ±5% for 1N5353B); same 16 V nominal, 5 W rating, and package | Lower precision regulation; suitable only where cost sensitivity outweighs voltage accuracy | Select 1N5353A only if system-level testing confirms ±10% VZ meets functional safety margins. |
| BZX85C16 | Different package (DO-41 vs. axial Surmetic 40); 16 V ±5%, but 1.3 W power rating and 200 Ω ZZT | Limited to low-power signal conditioning; cannot replace 1N5353B in 5 W power regulation roles | Use BZX85C16 only in space-constrained signal-path references where 1.3 W dissipation suffices. |
Compared with 1N5353A and BZX85C16, the 1N5353B delivers superior regulation accuracy (±5% vs. ±10%), higher power handling (5 W vs. 1.3 W), and lower dynamic impedance (75 Ω vs. 200 Ω), making it the only option qualified for industrial-grade 16 V shunt regulation requiring long-term stability and surge resilience.
Availability
1N5353B is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU reference voltage generation, and overvoltage protection circuits requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for 1N5353B 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The 1N53 Series is part of onsemi's discrete Zener portfolio designed specifically for high-reliability voltage regulation and transient suppression in harsh-environment applications demanding ±5% tolerance, 5 W power handling, and robust surge immunity.
FAQ
What is the nominal zener voltage and tolerance of the 1N5353B?
The 1N5353B has a nominal zener voltage of 16 V with a guaranteed tolerance of ±5%, meaning its actual zener voltage falls between 15.2 V and 16.8 V when tested at IZT = 2.5 mA and TA = 25°C. This tight tolerance is achieved via silicon-oxide passivated junction technology and is specified per JEDEC standards for the "B" suffix variant. The 1N5353B's voltage stability supports precision regulation in industrial and automotive systems where reference accuracy directly impacts measurement fidelity.
What is the maximum continuous zener current rating for the 1N5353B?
The 1N5353B has a maximum DC zener current (IZM) of 295 mA, calculated from its 5 W power rating divided by the maximum zener voltage (16.8 V). This rating assumes a lead temperature (TL) of 25°C with 3/8″ lead length; derating applies above 25°C at 40 mW/°C. The 1N5353B's IZM enables reliable operation in shunt regulator configurations powering small-signal loads without external heatsinking.
How does the 1N5353B perform under transient surge conditions?
The 1N5353B supports a peak non-repetitive surge current of 295 A for an 8.3 ms square-wave pulse, as verified per Figure 5 in the onsemi datasheet. This surge capability allows the 1N5353B to safely clamp inductive kickback and lightning-induced transients in industrial motor drives and automotive power systems. Its robust construction-using void-free transfer-molded plastic and silicon-oxide passivation-ensures no parameter shift occurs after such events, preserving long-term regulation integrity of the 1N5353B.
What is the zener impedance of the 1N5353B and why does it matter?
The 1N5353B has a maximum zener impedance (ZZT) of 75 Ω at IZT = 2.5 mA, measured with 40 ±10 ms current application. Low ZZT minimizes output voltage variation under changing load currents-critical for maintaining regulation accuracy in feedback circuits. For example, a 10 mA load step causes only ~0.75 V deviation in the 1N5353B's output, whereas higher-impedance alternatives would exhibit larger errors. This performance makes the 1N5353B suitable for precision references in programmable power supplies and sensor interfaces.
Is the 1N5353B RoHS-compliant and what package type does it use?
Yes, the 1N5353B is RoHS-compliant and supplied in a Pb-free axial-lead package designated as Surmetic 40 (JEDEC CASE 017AA). Its void-free, transfer-molded thermosetting plastic body provides environmental protection, while the cathode is marked by a visible polarity band. The package supports standard through-hole soldering at 260°C for 10 seconds at 1/16″ from the case, and its mechanical dimensions (8.38–8.89 mm length, 3.30–3.68 mm diameter) ensure compatibility with legacy industrial PCB footprints designed for the 1N5353B.
1N5353B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- 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 @ 12.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5353B FAQ
1.How can I place an order for 1N5353B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5353B 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 1N5353B reliable?
The price and inventory of 1N5353B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5353B is usually 5 days.
3.What payment methods are accepted for 1N5353B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5353B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5353B?
1N5353B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5353B 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 1N5353B?
For technical support, including 1N5353B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5353B requirements.
6.How does Aetrix verify that 1N5353B is sourced from the original manufacturer or authorized distributors?
All 1N5353B 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 1N5353B meets industry standards.
7.What is the process for return or replacement of 1N5353B?
All 1N5353B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5353B, 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 1N5353B part is unused and in its original packaging.
Return procedure for 1N5353B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5353B Tags
-
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
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
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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