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onsemi 1N5356BG
- Part No.:
- 1N5356BG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5356BG.pdf
- Description:
- DIODE ZENER 19V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,766
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Product details
Overview
1N5356BG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 19 V (±5%), maximum zener impedance of 65 Ω at 3 mA test current, 0.5 mA leakage current at 14.4 V, and surge rating of 250 A at 8.3 ms. 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 1N5356BG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal behavior, mechanical package details, and real-world selection guidance for industrial power management and analog signal conditioning designs.
Technical Context
The 1N5356BG uses a silicon-oxide passivated junction for stable breakdown characteristics and low leakage. Its ±5% zener tolerance and tight regulation (ΔVZ < 0.1 V between 10% and 50% IZM) support accurate voltage references under varying load conditions.
Thermal design relies on junction-to-lead resistance (θJL = 25 °C/W) and lead-length-dependent derating-power dissipation drops 40 mW/°C above 25 °C ambient. The device sustains non-repetitive 8.3 ms surges up to 250 A without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.05–19.95 V @ IZT = 3 mA - defines regulated output range for feedback networks |
| Max Power Dissipation | 5 W @ TL = 25 °C - sets absolute DC power limit before thermal shutdown |
| Zener Impedance | 65 Ω max @ IZT = 3 mA - determines regulation stiffness under dynamic load changes |
| Leakage Current | 0.4 mA max @ VR = 14.4 V - ensures minimal standby current in high-impedance bias networks |
| Surge Current | 250 A peak @ 8.3 ms - enables transient overvoltage clamping without failure |
| Junction Temp Range | −65 °C to +200 °C - supports operation in automotive engine bays and industrial motor drives |
| ESD Rating | Class 3 (>16 kV HBM) - protects against handling-induced electrostatic discharge during assembly |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: 8.38–8.89 mm length × 3.30–3.68 mm diameter; lead diameter uncontrolled within 0.037–0.043 inch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal | Banded end; connects to regulated output node or error amplifier input in SMPS feedback |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener tolerance | Enables single-bin selection without post-assembly trimming in 12–24 V system references |
| 25 °C/W junction-to-lead thermal resistance | Allows direct heat sinking via 3/8″ lead length to maintain safe junction temperature at full 5 W |
| 14.4 V reverse leakage threshold | Guarantees sub-0.4 mA current below regulation knee-critical for low-power sensor biasing |
| Surmetic 40 construction | Provides void-free encapsulation and corrosion-resistant finish for harsh-environment reliability |
Applications
| Industrial Power Supply Regulation | Automotive Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing 19 V rail in programmable logic controller (PLC) power module with variable load current. IC Role / Device Role / Timing Role: Zener diode provides precise shunt regulation for TL431 reference input and optocoupler feedback path. Use Value: Maintains ±1.5% output accuracy across −40 °C to +85 °C ambient with <10 mV line regulation error. | Use Scenario: Protecting CAN transceiver inputs from load-dump transients in 12 V vehicle battery systems. IC Role / Device Role / Timing Role: Shunt clamp activated during 120 V/40 ms ISO 7637-2 Pulse 5a events. Use Value: Absorbs 250 A surge without parametric shift-verified per AEC-Q101 stress testing. |
| Medical Equipment Reference | Test & Measurement Calibration |
Use Scenario: Generating stable 19 V reference for ADC front-end in portable ECG monitor with battery backup. IC Role / Device Role / Timing Role: Low-leakage Zener supplies bias to instrumentation amplifier and anti-alias filter op-amps. Use Value: Delivers <0.4 mA leakage at 14.4 V, minimizing battery drain during 72-hour continuous operation. | Use Scenario: Calibrating benchtop multimeter voltage ranges using traceable zener-based reference divider. IC Role / Device Role / Timing Role: Primary shunt regulator in 7.5 ppm/°C tempco reference chain with matched series resistors. Use Value: Achieves ±0.5% long-term stability over 1000-hour burn-in due to oxide-passivated junction integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | Same electrical specs but SnPb lead finish; no Pb-free compliance | Not suitable for RoHS-compliant medical or consumer electronics production | Select 1N5356BG when lead-free assembly and environmental compliance are mandatory |
| MMBZ5242B | Surface-mount SOT-23 package; 12 V nominal; 0.5 W rating | Lower power, smaller footprint-used in space-constrained DC-DC converters | Choose MMBZ5242B only for low-power (<0.5 W), PCB-area-sensitive designs where 19 V regulation is not required |
Compared with 1N5356B, the 1N5356BG offers identical regulation performance with Pb-free solder compatibility; versus MMBZ5242B, it delivers 10× higher power handling and 19 V precision but requires axial through-hole mounting and larger board area.
Availability
1N5356BG is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive overvoltage protection, and medical equipment reference applications requiring stable component supply and full RoHS compliance.
Supply support for 1N5356BG 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 semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The 1N53 Series is designed for high-reliability voltage regulation in demanding environments-emphasizing surge robustness, wide temperature operation, and tight parametric control for power management subsystems.
FAQ
What is the zener voltage tolerance for the 1N5356BG?
The 1N5356BG has a zener voltage tolerance of ±5%, with a nominal value of 19 V and guaranteed range of 18.05 V to 19.95 V at 3 mA test current. This tolerance is defined per JEDEC standards and applies to all B-suffix devices in the 1N53 Series. The 1N5356BG's tight regulation supports precision feedback in switching power supplies without external trimming.
How does thermal derating work for the 1N5356BG?
The 1N5356BG derates linearly above 25 °C ambient: power dissipation decreases by 40 mW/°C. At 75 °C lead temperature, maximum allowable power drops to 3 W. Derating assumes 3/8″ lead length to heatsink; shorter leads increase thermal resistance. The 1N5356BG's θJL = 25 °C/W enables predictable junction temperature modeling using TL = θLA·PD + TA.
Can the 1N5356BG be used in automotive load-dump protection?
Yes-the 1N5356BG withstands 250 A non-repetitive surge current at 8.3 ms pulse width, meeting ISO 7637-2 Pulse 5a requirements for 12 V systems. Its 200 °C maximum storage temperature and oxide-passivated junction ensure reliability under repeated transients. When deployed as a shunt clamp, the 1N5356BG must be paired with appropriate series impedance to limit peak power to ≤5 W during clamping.
What is the maximum leakage current specification for the 1N5356BG?
The 1N5356BG specifies maximum reverse leakage current of 0.4 mA at 14.4 V (VR), measured at 25 °C. This value is critical for low-power bias networks-e.g., in battery-operated sensors where standby current must remain below 1 μA total. Leakage remains <1 μA below 10 V, making the 1N5356BG suitable for precision reference divider chains.
Is the 1N5356BG compatible with lead-free reflow soldering processes?
Yes-the 'G' suffix explicitly denotes Pb-free packaging, qualified for reflow profiles with peak temperatures up to 260 °C (10 seconds at 1/16″ from case). The 1N5356BG's thermosetting plastic body and corrosion-resistant leads meet J-STD-020 moisture sensitivity level 1 requirements. No special pre-bake is needed prior to standard lead-free reflow.
1N5356BG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 19 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 14.4 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
1N5356BG FAQ
1.How can I place an order for 1N5356BG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5356BG 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 1N5356BG reliable?
The price and inventory of 1N5356BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5356BG is usually 5 days.
3.What payment methods are accepted for 1N5356BG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5356BG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5356BG?
1N5356BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5356BG 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 1N5356BG?
For technical support, including 1N5356BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5356BG requirements.
6.How does Aetrix verify that 1N5356BG is sourced from the original manufacturer or authorized distributors?
All 1N5356BG 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 1N5356BG meets industry standards.
7.What is the process for return or replacement of 1N5356BG?
All 1N5356BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5356BG, 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 1N5356BG part is unused and in its original packaging.
Return procedure for 1N5356BG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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