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onsemi 1N5234CTR
- Part No.:
- 1N5234CTR
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5234CTR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:9,754
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Product details
Overview
1N5234CTR from ON Semiconductor is a 6.2 V, ±2% tolerance silicon Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C and 7.0 Ω zener impedance at 20 mA, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the 1N5234CTR datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance (±2%), knee impedance (1.0 kΩ at 0.25 mA), reverse leakage (5.0 µA at 4.0 V), forward voltage (1.1 V at 0.2 A), and thermal derating (4.0 mW/°C above 75°C).
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying current loads. It exhibits a nominal zener voltage of 6.2 V with tight 2% tolerance, low dynamic impedance (7.0 Ω at IZ = 20 mA), and defined knee behavior (IZK = 0.25 mA, ZZK = 1.0 kΩ), enabling accurate low-current regulation.
Designed for operation up to +200°C junction temperature and -65°C to +200°C storage range, it supports reliable performance in industrial and automotive ambient environments. Its DO-35 axial glass package ensures compatibility with through-hole assembly and standard lead-forming practices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±2% at IZ = 20 mA - defines precise regulation point for feedback or reference circuits |
| Zener Impedance (ZZ) | 7.0 Ω at IZ = 20 mA - determines output voltage stability under load variation |
| Knee Impedance (ZZK) | 1.0 kΩ at IZK = 0.25 mA - indicates usable regulation threshold at low current |
| Reverse Leakage (IR) | 5.0 µA at VR = 4.0 V - limits error in high-impedance bias networks |
| Power Dissipation (PD) | 500 mW at TA = 25°C, derated 4.0 mW/°C above 75°C - sets thermal design margin for PCB layout |
| Forward Voltage (VF) | 1.1 V at IF = 0.2 A - enables use as low-drop rectifier or clamp in dual-polarity designs |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device requiring no orientation-specific PCB footprint beyond standard axial lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower potential side in regulation mode; forms return path for reverse-biased operation |
| Cathode | Zener breakdown terminal / voltage reference node | Connected to regulated output node; color band identifies this terminal for correct polarity placement |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±2% (C-grade) ensures minimal calibration drift in precision references |
| Low zener impedance | 7.0 Ω at 20 mA provides <15 mV output variation over ±5 mA load change |
| Defined knee characteristics | 1.0 kΩ impedance at 0.25 mA enables stable regulation down to microamp-level bias currents |
| High junction temperature rating | +200°C maximum TJ allows operation in thermally constrained enclosures without derating penalties |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener reference source providing fixed 6.2 V bias to Wheatstone bridge, independent of supply rail fluctuations. Use Value: ±2% tolerance and 7.0 Ω impedance ensure bridge output accuracy remains within 0.5% full-scale error across temperature. | Use Scenario: Supplying stable reference to ADC or internal bandgap circuitry in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-current voltage reference generating 6.2 V for ADC reference divider network. Use Value: 1.0 kΩ knee impedance enables regulation at 0.25 mA, extending battery life while maintaining 12-bit ADC linearity. |
| Automotive Body Control Module Clamp | Legacy Analog Power Supply Regulation |
Use Scenario: Overvoltage protection for LIN bus transceiver inputs exposed to load-dump transients. IC Role / Device Role / Timing Role: Transient voltage clamp limiting input to 6.32 V maximum during 12 V system surges. Use Value: 10 W surge rating (8.3 ms) and 5.0 µA leakage at 4.0 V prevent false triggering while minimizing quiescent current draw. | Use Scenario: Regulating unregulated 9–12 V wall adapter outputs for vintage audio amplifier bias rails. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 6.2 V on low-noise analog stage supply node. Use Value: DO-35 package allows direct replacement of legacy 1N5234 series parts without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5234B | ±5% tolerance (vs. ±2% for 1N5234CTR); same DO-35 package and 6.2 V nominal | Acceptable where cost sensitivity outweighs precision requirement; higher VZ spread increases calibration effort | Select 1N5234B only when ±5% regulation error is acceptable in final system tolerance stack-up |
| BZX55C6V2 | Same 6.2 V ±5%, DO-35 package, but higher ZZ (10 Ω) and lower PD (500 mW same) | Common in European designs; slightly reduced regulation stiffness impacts low-current stability | Choose BZX55C6V2 if sourcing from EU distributors is prioritized, but verify knee impedance impact on startup bias |
Compared with 1N5234B and BZX55C6V2, the 1N5234CTR delivers tighter voltage control (±2%) and lower dynamic impedance (7.0 Ω), making it preferable for precision analog references where long-term calibration stability and low-load regulation are critical.
Availability
1N5234CTR is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, automotive body control module clamping, and legacy analog power supply regulation requiring stable component supply and consistent parametric performance.
Supply support for 1N5234CTR 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N5234CTR belongs to ON Semiconductor's legacy Zener diode product line, designed specifically for general-purpose voltage regulation and reference applications in cost-sensitive, reliability-critical systems.
FAQ
What is the exact zener voltage range for 1N5234CTR at 20 mA test current?
The 1N5234CTR has a guaranteed zener voltage range of 6.08 V to 6.32 V when tested at IZ = 20 mA and TA = 25°C. This ±2% tolerance is confirmed per the Fairchild/ON Semiconductor datasheet Rev. A and applies to every unit shipped. The 1N5234CTR maintains this specification across its qualified operating temperature range, with minor drift compensated by its low zener impedance.
Does 1N5234CTR support operation above 75°C ambient temperature?
Yes, the 1N5234CTR is rated for operation up to +200°C junction temperature and can operate above 75°C ambient, provided power dissipation is linearly derated at 4.0 mW/°C above that point. At 100°C ambient, maximum allowable power drops to 400 mW. Thermal design must account for PCB copper area and airflow to maintain TJ ≤ 200°C. The 1N5234CTR's DO-35 package facilitates such thermal management via axial lead conduction.
Is 1N5234CTR compatible with lead-free reflow soldering processes?
The 1N5234CTR's DO-35 glass package and alloy leads are rated for lead-free wave and hand-soldering, with a maximum lead temperature of +230°C for 10 seconds. It is not rated for standard Pb-free reflow profiles (peak >260°C), as glass-body devices risk cracking. For automated assembly, selective soldering or wave soldering is recommended. Always verify process compatibility using the 1N5234CTR's official ON Semiconductor packaging specification document.
How does the knee impedance of 1N5234CTR affect low-current regulation performance?
The 1N5234CTR exhibits a knee impedance (ZZK) of 1.0 kΩ at IZK = 0.25 mA, meaning it begins regulating effectively at very low currents. This allows stable 6.2 V reference generation even in ultra-low-power circuits like sleep-mode sensor bias networks. Below 0.25 mA, voltage deviation increases nonlinearly; therefore, minimum operating current should be maintained ≥0.25 mA for predictable behavior. The 1N5234CTR's knee characteristic is fully characterized and repeatable across production lots.
Can 1N5234CTR be used as a forward-biased diode in addition to zener operation?
Yes, the 1N5234CTR functions as a standard silicon diode in forward bias, with VF = 1.1 V at IF = 0.2 A. This enables dual-use applications such as polarity protection or low-voltage clamping in bidirectional signal paths. However, its forward current capability is limited by thermal constraints - sustained 0.2 A forward conduction requires adequate heatsinking due to power dissipation (0.22 W). In most designs, the 1N5234CTR is optimized for reverse-bias regulation, but its forward characteristics are fully specified and usable.
1N5234CTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5234CTR FAQ
1.How can I place an order for 1N5234CTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234CTR 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 1N5234CTR reliable?
The price and inventory of 1N5234CTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234CTR is usually 5 days.
3.What payment methods are accepted for 1N5234CTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234CTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234CTR?
1N5234CTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234CTR 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 1N5234CTR?
For technical support, including 1N5234CTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234CTR requirements.
6.How does Aetrix verify that 1N5234CTR is sourced from the original manufacturer or authorized distributors?
All 1N5234CTR 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 1N5234CTR meets industry standards.
7.What is the process for return or replacement of 1N5234CTR?
All 1N5234CTR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234CTR, 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 1N5234CTR part is unused and in its original packaging.
Return procedure for 1N5234CTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5234CTR Tags
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