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onsemi 1N5348BRLG
- Part No.:
- 1N5348BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5348BRLG.pdf
- Description:
- DIODE ZENER 11V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:15,668
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Product details
Overview
1N5348BRLG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 11.0 V (±5%), maximum zener impedance of 125 Ω at 2.5 mA test current, and reverse leakage current ≤0.25 mA at 8.0 V. It operates across −65 °C to +200 °C and delivers stable voltage regulation in DC power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N5348BRLG datasheet, pinout, applications, or equivalent options, key selection criteria include its 11 V regulation tolerance, 125 Ω dynamic impedance at IZT, surge capability up to 430 A (8.3 ms), Pb-free Surmetic 40 package, and thermal resistance of 25 °C/W junction-to-lead.
Technical Context
The 1N5348BRLG uses a silicon-oxide passivated junction for enhanced stability and low leakage. Its zener voltage is specified at IZT = 2.5 mA with guaranteed min/typ/max values of 10.45 V / 11.0 V / 11.55 V, and it maintains regulation under transient surges up to 430 A for 8.3 ms.
Thermal performance is defined by θJL = 25 °C/W at TL = 25 °C with 3/8″ lead length, and its temperature coefficient is +5.5 mV/°C (typical) in the 11–75 V range. The device is rated for continuous DC dissipation of 5 W only when leads are maintained at ≤25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45–11.55 V @ IZT = 2.5 mA - tight ±5% tolerance enables precise 11 V reference in feedback loops |
| Max Power Dissipation | 5 W @ TL = 25 °C - requires heatsinking or short-duration operation above ambient |
| Zener Impedance | 125 Ω max @ IZT = 2.5 mA - low dynamic resistance ensures stable regulation under load variation |
| Reverse Leakage | ≤0.25 mA @ VR = 8.0 V - minimal standby current preserves efficiency in low-power bias networks |
| Surge Current | 430 A peak @ 8.3 ms - withstands high-energy transients in industrial power rails and ESD-protected inputs |
| Junction Temp Range | −65 °C to +200 °C - supports operation in automotive engine compartments and industrial enclosures |
| Polarity Indicator | Cathode band - unambiguous orientation for correct placement in series-shunt regulator topologies |
Pinout & Package
Package: Axial-lead Surmetic 40 (Case 017AA), Pb-free molded plastic with corrosion-resistant solderable leads. Cathode identified by single black band. Mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; establishes reference ground for shunt regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential rail; sinks current to clamp voltage at 11 V ±5% |
Key Features
| Feature | Design Value |
|---|---|
| ESD Robustness | Class 3 (>16 kV HBM) - survives handling and board-level ESD events without parameter shift |
| Surge Withstand | 180 W non-repetitive surge rating - protects downstream ICs during line transients and inductive kickback |
| Stable Regulation | Guaranteed limits on six electrical parameters - ensures consistent VZ, ZZT, IR, and IZM across production lots |
| Lead Solderability | Rated for 260 °C, 10 s at 1/16″ from case - compatible with standard reflow and hand-soldering processes |
| Environmental Protection | Void-free thermosetting plastic encapsulation - resists moisture, dust, and chemical exposure in harsh environments |
Applications
| DC Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators and switching converter error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 11 V reference point for comparator input. Use Value: Tight ±5% VZ tolerance and 125 Ω impedance ensure <±1% output regulation accuracy under varying load conditions. |
Use Scenario: Protecting microcontroller I/O pins and analog sensor inputs from voltage spikes. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping rail voltage to 11.55 V maximum. Use Value: 430 A surge rating and 180 W pulse handling absorb 8.3 ms transients without degradation or latch-up. |
| Industrial Sensor Biasing | Automotive Control Module Reference |
Use Scenario: Providing stable excitation voltage for precision RTD or bridge-based pressure sensors. IC Role / Device Role / Timing Role: Low-drift voltage source delivering constant current through sensor elements. Use Value: −65 °C to +200 °C operating range and +5.5 mV/°C tempco enable accurate calibration across full vehicle thermal envelope. |
Use Scenario: Generating internal reference for engine control unit (ECU) analog-to-digital converters. IC Role / Device Role / Timing Role: Primary voltage reference for ADC reference buffer and power monitor circuits. Use Value: Pb-free Surmetic 40 package meets automotive RoHS requirements while maintaining 5 W DC capability at under-hood temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5348B | Same electrical specs but SnPb lead finish; no "G" suffix indicating Pb-free compliance | Not suitable for RoHS-compliant automotive or medical designs requiring Pb-free assembly | Select 1N5348BRLG when Pb-free process compatibility and traceability are mandatory |
| BZX85C11 | 1 W rating, 11 V ±5%, 150 Ω ZZT @ 5 mA - lower power, higher impedance, different package (DO-41) | Applicable only in low-current bias networks; insufficient for 5 W surge or continuous regulation loads | Choose BZX85C11 only for space-constrained PCBs where 1 W dissipation suffices and DO-41 footprint is required |
Compared with 1N5348B and BZX85C11, the 1N5348BRLG uniquely combines 5 W steady-state power, Pb-free compliance, axial Surmetic 40 ruggedness, and 125 Ω low-impedance regulation-making it the sole option for high-reliability 11 V shunt references in industrial and automotive power systems.
Availability
1N5348BRLG is available at Aetrix Electronics and suitable for DC power supply reference, overvoltage clamp, and industrial sensor biasing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5348BRLG 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N53 Series belongs to onsemi's legacy Zener regulator portfolio, engineered for high-reliability voltage reference and transient suppression in demanding power management systems.
FAQ
What is the exact zener voltage tolerance and test condition for 1N5348BRLG?
The 1N5348BRLG has a zener voltage tolerance of ±5%, specified as 10.45 V (min) to 11.55 V (max) at IZT = 2.5 mA, with 40 ±10 ms current application prior to measurement. This tolerance is guaranteed per JEDEC standard and applies only to B-suffix devices like the 1N5348BRLG.
Can 1N5348BRLG be used in surface-mount designs?
No - the 1N5348BRLG is an axial-lead device in Case 017AA (Surmetic 40) 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 SMA/Zener packages like MMBZ5242B, though with lower power rating.
What is the maximum continuous zener current for 1N5348BRLG at 85°C ambient?
At 85°C ambient, the 1N5348BRLG must be derated: PD = 5 W × [1 − (85 − 25)/40] = 2.5 W. With nominal VZ = 11.0 V, maximum continuous IZ = 2.5 W / 11.0 V ≈ 227 mA. Exceeding this risks thermal runaway due to rising junction temperature.
Does 1N5348BRLG meet automotive AEC-Q200 stress testing requirements?
No - the 1N5348BRLG is not AEC-Q200 qualified. While it operates from −65 °C to +200 °C and offers robust surge/ESD performance, onsemi does not list it in AEC-Q200 stress-tested categories. For automotive-grade Zeners, refer to onsemi's AEC-Q200-qualified NSZ series or similar qualified alternatives.
How does the temperature coefficient affect 1N5348BRLG regulation accuracy over −40°C to +125°C?
The 1N5348BRLG exhibits a typical temperature coefficient of +5.5 mV/°C in the 11–75 V range. Over −40°C to +125°C (ΔT = 165°C), VZ drift is ~±0.91 V - resulting in a total regulation window of ~10.14 V to 12.46 V. System-level compensation or tighter thermal management is needed for sub-1% accuracy across this range.
1N5348BRLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 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
1N5348BRLG FAQ
1.How can I place an order for 1N5348BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5348BRLG 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 1N5348BRLG reliable?
The price and inventory of 1N5348BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5348BRLG is usually 5 days.
3.What payment methods are accepted for 1N5348BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5348BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5348BRLG?
1N5348BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5348BRLG 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 1N5348BRLG?
For technical support, including 1N5348BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5348BRLG requirements.
6.How does Aetrix verify that 1N5348BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5348BRLG 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 1N5348BRLG meets industry standards.
7.What is the process for return or replacement of 1N5348BRLG?
All 1N5348BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5348BRLG, 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 1N5348BRLG part is unused and in its original packaging.
Return procedure for 1N5348BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5348BRLG Tags
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