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onsemi 1N5334BG
- Part No.:
- 1N5334BG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5334BG.pdf
- Description:
- DIODE ZENER 3.6V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,799
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Product details
Overview
1N5334BG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 3.6 V, ±5% tolerance, 350 Ω maximum zener impedance at 2.5 mA test current, and 18.7 µA maximum leakage current at 0.8 V reverse bias. It operates as a precision voltage reference or shunt regulator in low-voltage power supply rails and overvoltage protection circuits for microcontroller I/O interfaces.
For engineers reviewing the 1N5334BG datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.6 V regulation point, 1320 A surge rating (8.3 ms), Pb-free Surmetic 40 package, and thermal resistance of 25 °C/W junction-to-lead at 3/8″ lead length.
Technical Context
This device uses silicon-oxide passivated junction technology to achieve tight voltage tolerance and stable regulation under varying load and temperature conditions. Its zener voltage is specified at IZT = 2.5 mA with guaranteed min/typ/max values of 3.42 V / 3.6 V / 3.78 V and exhibits a negative temperature coefficient typical of low-voltage Zeners below 5 V.
The 1N5334BG supports pulsed operation up to 180 W surge power and maintains regulation across −65 °C to +200 °C operating range, with DC max junction temperature limited to 150 °C. Its axial lead configuration enables through-hole mounting with any orientation and soldering at 260 °C for 10 seconds at 1/16″ from case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V nominal, ±5% tolerance - defines precise regulation point for 3.3 V system rail clamping or reference generation |
| Power Dissipation (PD) | 5 W at TL = 25 °C - sets maximum continuous DC power handling before thermal derating begins |
| Zener Impedance (ZZT) | 350 Ω max @ IZT = 2.5 mA - indicates regulation stiffness; lower impedance yields tighter voltage stability under load variation |
| Leakage Current (IR) | 18.7 µA max @ VR = 0.8 V - ensures minimal standby current draw in battery-powered sensing circuits |
| Surge Current (IRM) | 1320 A peak @ 8.3 ms - provides robust transient suppression against ESD and inductive switching spikes |
| Junction-to-Lead RθJL | 25 °C/W - determines thermal path efficiency from die to PCB copper; critical for sustained high-current operation |
| ESD Rating | Class 3 (>16 kV HBM) - qualifies for direct interface with human-touch exposed ports without external protection |
Pinout & Package
Package: Axial-lead Surmetic 40 plastic case (JEDEC CASE 017AA), void-free transfer-molded thermosetting material, cathode indicated by band. Dimensions: 8.38–8.89 mm length × 3.30–3.68 mm diameter, leads 25.4–31.75 mm long.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to ground or low-impedance return path; establishes reference potential for regulated output |
| Cathode | Zener breakdown terminal / regulated voltage output node | Connected to input rail or signal line requiring clamping; delivers stable 3.6 V when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage Zener regulation | 3.6 V nominal with ±5% tolerance - enables accurate clamping of 3.3 V logic rails without additional resistive dividers |
| High surge capability | 1320 A peak current (8.3 ms) - protects downstream circuitry from repetitive transients in industrial control inputs |
| Pb-free construction | RoHS-compliant Surmetic 40 package - meets global environmental compliance requirements without sacrificing thermal performance |
| ESD-hardened junction | Class 3 HBM (>16 kV) - eliminates need for external TVS diodes in user-interface port protection designs |
| Stable low-tempco | Negative tempco typical for 3.6 V units - compensates for positive tempco of associated ICs in mixed-signal sensor front-ends |
Applications
| Microcontroller I/O Protection | 3.3 V Power Rail Clamping |
|---|---|
Use Scenario: Protecting GPIO pins of ARM Cortex-M0+ MCUs from ESD events during field deployment. IC Role / Device Role / Timing Role: Shunt clamp limiting pin voltage to 3.6 V during fast transients. Use Value: Prevents latch-up and oxide damage without adding series resistance that degrades signal integrity. |
Use Scenario: Stabilizing 3.3 V supply in low-power IoT sensor nodes powered by Li-ion batteries with variable discharge curves. IC Role / Device Role / Timing Role: Passive voltage reference for LDO feedback or ADC reference divider network. Use Value: Maintains <1% regulation error across 1–10 mA load range, enabling consistent sensor measurement accuracy. |
| Industrial Analog Input Protection | Programmable Logic Controller (PLC) Signal Conditioning |
Use Scenario: Front-end protection for 4–20 mA current loop receivers exposed to 24 VDC field wiring surges. IC Role / Device Role / Timing Role: Overvoltage limiter placed before op-amp input stage. Use Value: Absorbs >100 J surge energy per event while maintaining sub-µA leakage to preserve loop accuracy. |
Use Scenario: Voltage translation and level-shifting between 24 V PLC backplane and 3.3 V FPGA I/O banks. IC Role / Device Role / Timing Role: Bidirectional clamp defining logic-high threshold at 3.6 V. Use Value: Enables reliable interfacing without active level shifters, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5334B | Same electrical specs but SnPb lead finish; not RoHS-compliant | Permitted only in legacy industrial equipment exempt from EU RoHS directives | Select 1N5334B only if Pb-free compliance is not required and existing solder process uses SnPb alloy. |
| BZX55-C3V6 | 400 mW rating, 3.6 V ±5%, 90 Ω ZZT @ 5 mA - lower power, lower impedance, different package (DO-35) | Suitable for signal-level clamping but not for 5 W continuous dissipation or high-energy surge absorption | Choose BZX55-C3V6 for space-constrained PCBs where power dissipation remains below 400 mW and surge exposure is minimal. |
Compared with 1N5334BG, the 1N5334B offers identical regulation performance but lacks Pb-free compliance, while the BZX55-C3V6 trades power handling and surge robustness for smaller footprint and lower dynamic impedance - making each suitable only within distinct thermal, regulatory, and reliability boundaries.
Availability
1N5334BG is available at Aetrix Electronics and suitable for industrial automation interfaces, battery-powered sensor nodes, and programmable logic controller (PLC) analog input conditioning requiring stable component supply and long-term lifecycle support.
Supply support for 1N5334BG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The 1N53 Series belongs to onsemi's Surmetic Zener regulator product line, engineered for high-reliability voltage reference and transient suppression in harsh-environment power systems.
FAQ
What is the exact zener voltage tolerance and test condition for 1N5334BG?
The 1N5334BG has a ±5% zener voltage tolerance, verified at IZT = 2.5 mA with 40 ±10 ms current application prior to measurement. Its nominal VZ is 3.6 V, with guaranteed minimum and maximum values of 3.42 V and 3.78 V respectively at 25 °C ambient temperature.
Can 1N5334BG be used in surface-mount designs?
No - the 1N5334BG is exclusively an axial-lead through-hole device in Surmetic 40 plastic package (CASE 017AA). It lacks SMD-compatible terminations or land patterns. For surface-mount equivalents, consider the SMAJ3.3A or P6SMB3.3A TVS diodes, though these differ in clamping behavior and power rating.
What is the maximum continuous DC current the 1N5334BG can handle at room temperature?
At TL = 25 °C, the 1N5334BG supports a maximum DC zener current (IZM) of 1320 mA, calculated as PD/VZ = 5 W / 3.6 V. This assumes ideal heat sinking; actual usable current decreases with rising lead temperature due to 40 mW/°C derating above 25 °C.
How does the temperature coefficient affect 1N5334BG performance in automotive environments?
The 1N5334BG exhibits a negative temperature coefficient (~−2 mV/°C typical for 3.6 V Zeners), causing VZ to decrease as temperature rises. In automotive under-hood applications (−40 °C to +125 °C), this results in ~0.25 V total drift - acceptable for non-critical clamping but unsuitable for precision references without compensation.
Is the 1N5334BG suitable for protecting USB 3.3 V VBUS lines?
No - the 1N5334BG is not rated for USB compliance. Its 3.6 V zener voltage exceeds the 3.6 V absolute maximum for USB 3.3 V VBUS, and its slow response time (microsecond-scale) cannot suppress fast ESD pulses per IEC 61000-4-2. Use dedicated USB-rated TVS arrays like SP3003-03HTG instead.
1N5334BG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 150 µA @ 1 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
1N5334BG FAQ
1.How can I place an order for 1N5334BG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5334BG 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 1N5334BG reliable?
The price and inventory of 1N5334BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5334BG is usually 5 days.
3.What payment methods are accepted for 1N5334BG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5334BG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5334BG?
1N5334BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5334BG 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 1N5334BG?
For technical support, including 1N5334BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5334BG requirements.
6.How does Aetrix verify that 1N5334BG is sourced from the original manufacturer or authorized distributors?
All 1N5334BG 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 1N5334BG meets industry standards.
7.What is the process for return or replacement of 1N5334BG?
All 1N5334BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5334BG, 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 1N5334BG part is unused and in its original packaging.
Return procedure for 1N5334BG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5334BG 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
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SMAZ12-13-F
Diodes Incorporated
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