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onsemi 1N5352B
- Part No.:
- 1N5352B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352B.pdf
- Description:
- DIODE ZENER 15V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,438
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Product details
Overview
1N5352B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 15 V (±5%), maximum zener impedance of 75 Ω at 2.5 mA test current, 1 A maximum surge current at 8.3 ms, and reverse leakage current ≤0.25 mA at 11.5 V. It operates from −65°C to +200°C and is used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation.
For engineers reviewing the 1N5352B datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal behavior, mechanical package details, and real-world design context for stable DC voltage clamping and regulation tasks.
Technical Context
The 1N5352B implements a silicon-oxide passivated PN junction optimized for tight voltage tolerance (±5%) and low dynamic impedance. Its zener breakdown mechanism is designed for stable regulation under steady-state DC and short-duration surge conditions up to 180 W.
Thermal performance is defined by junction-to-lead resistance of 25 °C/W at 3/8″ lead length, enabling predictable derating above 25°C. The device exhibits a positive temperature coefficient above 10 V - approximately +6.3 mV/°C at IZT - supporting predictable drift compensation in multi-device references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25–15.75 V @ IZT = 2.5 mA - defines precise regulation window for feedback sensing |
| Max Power Dissipation | 5 W @ TL = 25°C - sets absolute DC power limit before thermal shutdown risk |
| Zener Impedance (ZZT) | 75 Ω max @ IZT = 2.5 mA - determines output voltage stability under load transients |
| Surge Current (IR) | 1 A peak @ 8.3 ms - supports transient overvoltage suppression without failure |
| Reverse Leakage (IR) | ≤0.25 mA @ VR = 11.5 V - ensures minimal quiescent current in standby regulation |
| Temp Coefficient (θVZ) | +6.3 mV/°C @ IZT - enables predictable voltage drift modeling across operating range |
| Junction Temp Range | −65°C to +200°C - allows deployment in automotive engine bays and industrial controls |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: 8.38–8.89 mm body length, 3.30–3.68 mm diameter, 25.4–31.75 mm lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / regulation reference point | Marked with band; serves as stable voltage reference node in shunt regulator topologies |
Key Features
| Feature | Design Value |
|---|---|
| ESD robustness | Class 3 (>16 kV HBM) - survives handling and board assembly without protection circuitry |
| Surge rating | 180 W @ 8.3 ms - clamps line transients without degradation in telecom or industrial inputs |
| Tight voltage tolerance | ±5% (JEDEC B-suffix) - eliminates need for post-production trimming in voltage reference designs |
| Pb-free compliance | RoHS-compliant plastic package - meets global environmental directives without performance trade-offs |
| Corrosion-resistant finish | Solderable leads with corrosion-resistant plating - ensures long-term reliability in humid or chemically aggressive environments |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated 48 V DC-DC converter to regulate output within ±1%. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 15 V reference to TL431 error amplifier input. Use Value: Low 75 Ω ZZT minimizes regulation error under load step changes; ±5% tolerance avoids calibration overhead. | Use Scenario: Provides excitation voltage for 4–20 mA current-loop pressure sensor in factory automation PLC module. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed 15 V rail for analog front-end op-amp biasing. Use Value: 0.25 mA leakage at 11.5 V ensures <1% error contribution to sensor signal chain; +6.3 mV/°C TC enables predictable system-level compensation. |
| Overvoltage Clamp for MCU I/O | Programmable Threshold Detector |
Use Scenario: Protects 3.3 V GPIO pin of microcontroller against accidental 24 V field-wiring faults in building control panel. IC Role / Device Role / Timing Role: Fast-acting crowbar element limiting pin voltage to safe level during fault condition. Use Value: 1 A surge rating at 8.3 ms absorbs energy from inductive kickback without failure; axial package allows through-hole mounting near connector. | Use Scenario: Sets trip point for comparator-based battery undervoltage lockout in portable medical device. IC Role / Device Role / Timing Role: Stable reference source defining 14.5 V threshold for Li-ion pack monitoring. Use Value: Tight 14.25–15.75 V range ensures accurate detection across temperature; 25 °C/W θJL enables thermal-aware PCB layout for consistent trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 14 V nominal, ±5%, 1 W rating, DO-41 package | Lower power handling; unsuitable for >1 W continuous dissipation | Select only for low-power biasing where 15 V matching is secondary to cost and footprint |
| BZX85C15 | 15 V nominal, ±5%, 1.3 W rating, DO-41 package | Higher ZZT (up to 200 Ω), lower surge capability (0.5 A) | Acceptable for non-critical references but not for high-stability or surge-prone environments |
Compared with 1N5352B, the 1N4744A and BZX85C15 offer similar nominal voltage but lack its 5 W power rating, 1 A surge capacity, and 75 Ω low-impedance regulation - making 1N5352B essential for industrial-grade voltage references requiring thermal resilience and transient immunity.
Availability
1N5352B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and programmable logic controller (PLC) analog input conditioning requiring stable component supply and long-lifecycle support.
Supply support for 1N5352B 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 (Semiconductor Components Industries, LLC) is a global supplier of high-performance silicon solutions focused on energy efficiency, analog, power management, and sensing technologies.
The 1N53 Series is engineered for high-reliability voltage regulation in harsh environments, targeting applications demanding stable Zener performance across wide temperature ranges and transient conditions.
FAQ
What is the exact zener voltage tolerance and test condition for 1N5352B?
The 1N5352B has a zener voltage tolerance of ±5%, specified as 14.25 V minimum to 15.75 V maximum at IZT = 2.5 mA, per JEDEC standard test conditions. This tolerance applies only to B-suffix devices and is guaranteed across the full operating temperature range of −65°C to +200°C. The 1N5352B datasheet confirms these values in Table 3 on page 3.
Can 1N5352B be used in surface-mount designs?
No, the 1N5352B is exclusively an axial-lead device in Case 017AA plastic package and is not compatible with SMT assembly. It requires through-hole mounting with 3/8″ lead length for thermal derating compliance. For SMT alternatives, consider onsemi's NSZ series or other manufacturer equivalents - but none match the 1N5352B's 5 W rating and 75 Ω ZZT in SMT form.
What is the maximum continuous DC current the 1N5352B can handle at room temperature?
At TL = 25°C, the 1N5352B supports a maximum DC zener current (IZM) of 75 mA, calculated as 5 W ÷ 15 V nominal. This value is confirmed in the Electrical Characteristics table on page 3 of the 1N5352B datasheet. Exceeding this current risks exceeding the 5 W power limit and thermal runaway.
How does temperature affect the zener voltage of 1N5352B?
The 1N5352B exhibits a positive temperature coefficient of +6.3 mV/°C at IZT, meaning its zener voltage increases linearly with junction temperature. This behavior is documented in Figure 3 of the 1N5352B datasheet and must be accounted for in precision reference designs operating beyond 25°C ambient.
Is the 1N5352B RoHS compliant and lead-free?
Yes, the 1N5352B is offered in a Pb-free package (indicated by the "G" suffix in ordering codes such as 1N5352BG), fully compliant with RoHS Directive 2011/65/EU. The device uses lead-free solderable terminations and conforms to onsemi's Pb-Free Packaging Standard, as stated in the Mechanical Characteristics section of the 1N5352B datasheet.
1N5352B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15 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 ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5352B FAQ
1.How can I place an order for 1N5352B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352B 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 1N5352B reliable?
The price and inventory of 1N5352B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352B is usually 5 days.
3.What payment methods are accepted for 1N5352B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352B?
1N5352B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352B 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 1N5352B?
For technical support, including 1N5352B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352B requirements.
6.How does Aetrix verify that 1N5352B is sourced from the original manufacturer or authorized distributors?
All 1N5352B 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 1N5352B meets industry standards.
7.What is the process for return or replacement of 1N5352B?
All 1N5352B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352B, 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 1N5352B part is unused and in its original packaging.
Return procedure for 1N5352B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5352B Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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