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onsemi 1N5355BRL
- Part No.:
- 1N5355BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5355BRL.pdf
- Description:
- DIODE ZENER 18V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,854
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Product details
Overview
1N5355BRL from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 18 V, ±5% tolerance, 65 Ω maximum zener impedance at 2.5 mA test current, and 0.4 mA maximum leakage current at 13.7 V reverse bias. It operates as a precision voltage reference or shunt regulator in DC power supply feedback paths, overvoltage protection circuits, and voltage-clamping applications.
For engineers reviewing the 1N5355BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its 18 V regulation point, 75 A maximum surge current (8.3 ms), 25 °C/W junction-to-lead thermal resistance, ESD rating >16 kV (HBM), and Pb-free Surmetic 40 plastic package compatibility with wave and reflow soldering.
Technical Context
This device uses a silicon-oxide passivated junction to achieve tight voltage tolerance and stable regulation across temperature. Its zener voltage is specified at IZT = 2.5 mA with guaranteed min/typ/max values of 17.1 V / 18 V / 18.9 V, and it maintains low dynamic impedance (ZZT ≤ 65 Ω) under that condition.
The 1N5355BRL supports pulsed operation up to 200 °C junction temperature and features a cathode band for polarity identification. Its thermal design relies on lead conduction-junction-to-lead resistance is 25 °C/W at 3/8″ lead length-and it complies with JEDEC standards for axial-lead Zener diodes in the 1N53 series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V nominal, ±5% tolerance (17.1–18.9 V); defines precise clamping level in shunt regulation |
| Power Dissipation (PD) | 5 W at TL = 25°C; derates 40 mW/°C above 25°C-sets max continuous DC load capability |
| Zener Impedance (ZZT) | ≤65 Ω at IZT = 2.5 mA; ensures minimal output voltage variation under load changes |
| Surge Current (IR) | 75 A peak (8.3 ms square wave); enables robust transient overvoltage suppression |
| Leakage Current (IR) | ≤0.4 mA at VR = 13.7 V; guarantees low standby power loss in high-impedance bias networks |
| ESD Rating | Class 3 (>16 kV HBM); provides built-in handling robustness without external protection |
| Junction-to-Lead RθJL | 25 °C/W at 3/8″ lead length; determines thermal path efficiency for PCB heat sinking |
Pinout & Package
Package: Axial-lead Surmetic 40 plastic case (JEDEC Case 017AA), void-free transfer-molded thermosetting material with corrosion-resistant leads and cathode polarity band. Lead temperature limit: 260°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current up to 1.0 A (VF ≤ 1.2 V) |
| Cathode | Zener breakdown terminal | Connected to higher-potential node; establishes regulated voltage drop when reverse biased above VZ; marked by visible band |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Guarantees tight regulation without post-manufacture trimming-reduces BOM variants and calibration effort |
| 65 Ω max zener impedance at 2.5 mA | Minimizes output voltage drift under varying load currents-critical for stable reference in feedback loops |
| 75 A surge rating (8.3 ms) | Withstands common-line transients (e.g., IEC 61000-4-5) without failure-eliminates need for upstream TVS in many designs |
| ESD Class 3 (>16 kV HBM) | Survives handling and board assembly without additional ESD protection-lowers system-level component count |
| Pb-free Surmetic 40 package | RoHS-compliant, wave/reflow solderable, and environmentally rugged-supports industrial and automotive production |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing output voltage in linear regulator feedback networks or low-power unregulated supplies. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 18 V reference point for error amplifier input. Use Value: Maintains ±1% output stability over line/load variations due to low ZZT and tight VZ tolerance. |
Use Scenario: Clamping transient spikes on 15–24 V DC rails (e.g., automotive battery lines or industrial PLC inputs). IC Role / Device Role / Timing Role: Passive crowbar element diverting excess energy to ground during overvoltage events. Use Value: Absorbs 180 W surges (8.3 ms) without degradation-meets ISO 7637-2 Pulse 1/2a immunity requirements. |
| Voltage Reference for ADCs | Signal Level Translation |
Use Scenario: Providing stable 18 V reference for 12-bit+ SAR ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Precision analog reference source with low temperature coefficient (≈+0.075%/°C near 18 V). Use Value: Limits reference drift to <±0.5% over −40°C to +85°C ambient-enables single-point calibration. |
Use Scenario: Biasing op-amp inputs or shifting logic levels between 3.3 V and 18 V domains. IC Role / Device Role / Timing Role: Clamp diode establishing fixed offset voltage in level-shifting networks. Use Value: Delivers repeatable 18 V clamp threshold with <10 mV hysteresis-ensures deterministic signal edge alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355B | Same electrical specs and package, but supplied in 1000-unit box (not tape-and-reel); no "RL" suffix | Preferred for prototyping or low-volume manual assembly where reel feeding is unnecessary | Select 1N5355BRL for automated SMT placement; choose 1N5355B for hand-soldered evaluation boards |
| BZX85C18 | 1.3 W rating, 10% tolerance, TO-204AA (DO-41) package; higher ZZT (≥100 Ω) and lower surge rating (40 A) | Suitable only for low-power, non-critical clamping where cost is primary constraint | 1N5355BRL delivers 3.8× higher power and tighter regulation-use where reliability or precision matters |
Compared with 1N5355B (box-packaged variant), the 1N5355BRL offers identical performance in tape-and-reel format for pick-and-place manufacturing; versus BZX85C18, it provides superior power handling, tighter tolerance, and lower impedance-justifying its use in industrial-grade power management.
Availability
1N5355BRL is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and precision voltage reference applications requiring stable component supply and RoHS-compliant packaging.
Supply support for 1N5355BRL 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N53 series was designed as a high-reliability, 5 W Zener family for demanding DC regulation and protection tasks-emphasizing tight tolerance, surge resilience, and manufacturability in axial-lead form.
FAQ
What is the nominal zener voltage and tolerance of the 1N5355BRL?
The 1N5355BRL has a nominal zener voltage of 18 V with a guaranteed tolerance of ±5%, corresponding to a min/typ/max range of 17.1 V / 18 V / 18.9 V at IZT = 2.5 mA. This tolerance is defined per JEDEC standard and applies specifically to the "B" suffix variant, which the 1N5355BRL belongs to.
Can the 1N5355BRL be used in surface-mount applications?
No-the 1N5355BRL is an axial-lead device in Surmetic 40 (Case 017AA) plastic package and is not compatible with SMT processes. It is intended for through-hole mounting or chassis wiring. For surface-mount equivalents, consider the MMBZ52xx series or SMAZ18, but note their lower power rating and different regulation characteristics.
What is the maximum surge current rating for the 1N5355BRL and under what conditions?
The 1N5355BRL is rated for a maximum non-repetitive surge current of 75 A at an 8.3 ms pulse width, tested per IEC 61000-4-5 waveform definitions. This rating assumes TA = 25°C and proper lead heatsinking; derating is required at elevated ambient temperatures or for repetitive pulses.
How does the thermal resistance of the 1N5355BRL affect its power handling in real-world PCB layouts?
The 1N5355BRL has a junction-to-lead thermal resistance (θJL) of 25 °C/W at 3/8″ lead length. In practice, this means each watt dissipated raises the junction temperature 25°C above the lead temperature-so with 3/8″ leads soldered to 1 oz. copper pours, sustained 5 W operation requires careful thermal management to avoid exceeding the 150°C DC max junction temperature.
Is the 1N5355BRL RoHS compliant and what does the "RL" suffix indicate?
Yes, the 1N5355BRL is RoHS compliant and Pb-free, as confirmed by onsemi's documentation and the "G" suffix in ordering codes. The "RL" suffix specifically denotes tape-and-reel packaging (4000 units per reel), optimized for automated assembly, while retaining identical electrical and mechanical specifications as the boxed 1N5355B variant.
1N5355BRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13.7 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
1N5355BRL FAQ
1.How can I place an order for 1N5355BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5355BRL 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 1N5355BRL reliable?
The price and inventory of 1N5355BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5355BRL is usually 5 days.
3.What payment methods are accepted for 1N5355BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5355BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5355BRL?
1N5355BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5355BRL 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 1N5355BRL?
For technical support, including 1N5355BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5355BRL requirements.
6.How does Aetrix verify that 1N5355BRL is sourced from the original manufacturer or authorized distributors?
All 1N5355BRL 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 1N5355BRL meets industry standards.
7.What is the process for return or replacement of 1N5355BRL?
All 1N5355BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5355BRL, 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 1N5355BRL part is unused and in its original packaging.
Return procedure for 1N5355BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5355BRL Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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