My Inquiry
My Account
onsemi 1N5244B_T50A
- Part No.:
- 1N5244B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5244B_T50A.pdf
- Description:
- DIODE ZENER 14V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:9,277
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5244B_T50A from ON Semiconductor is a 14 V, ±5% tolerance, 500 mW glass-encapsulated Zener diode in DO-35 package, designed for precision voltage regulation and reference applications in low-power analog circuits, power supply feedback loops, and overvoltage protection. It exhibits 15 Ω dynamic impedance at 5 mA, 0.1 μA reverse leakage at 11.2 V, and a temperature coefficient of +0.080 %/°C.
For engineers reviewing the 1N5244B_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, thermal stability, low leakage at rated VR, DO-35 mechanical compatibility, and junction temperature derating above 50°C.
Technical Context
This device operates as a two-terminal voltage reference where reverse-biased breakdown provides stable DC voltage regulation. Its Zener voltage is specified at IZ = 5 mA with thermal equilibrium maintained at TL = 30°C ± 1°C and 3/8″ lead length, ensuring traceable metrological conditions.
The DO-35 hermetically sealed glass package enables reliable operation across -65°C to +200°C junction and storage temperature ranges, while the 4.0 mW/°C power derating above 50°C supports thermal design in compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.0 V nominal, min 13.3 V / max 14.7 V at IZ = 5 mA - defines regulated output voltage under standard test conditions |
| Tolerance | ±5% - ensures voltage accuracy within 0.7 V band for calibration-critical references |
| Power Dissipation (PD) | 500 mW at TA = 25°C - sets maximum continuous DC power handling before thermal shutdown risk |
| Zener Impedance (ZZ) | 15 Ω at IZ = 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Leakage (IR) | 0.1 μA at VR = 11.2 V - indicates low standby current in high-impedance bias networks |
| Temp. Coefficient (TC) | +0.080 %/°C - quantifies voltage drift per degree Celsius for ambient temperature compensation design |
| Forward Voltage (VF) | ≤1.2 V at IF = 200 mA - defines conduction threshold when used in polarity-sensitive clamping |
Pinout & Package
DO-35 glass axial package: hermetically sealed, 0.533 mm diameter body, 4.56 mm overall length, cathode indicated by color band. Weight: 0.137 g. JEDEC DO-204AH compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to unregulated input via series resistor; delivers stable 14 V to load when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass encapsulation | Enables long-term parameter stability and moisture resistance in industrial environments |
| ±5% voltage tolerance | Supports cost-sensitive designs requiring calibrated reference without external trimming |
| Low 0.1 μA leakage at 11.2 V | Minimizes error in high-impedance voltage divider or op-amp reference networks |
| +0.080 %/°C tempco | Allows predictable drift modeling for temperature-compensated power supply designs |
| DO-35 mechanical standardization | Ensures compatibility with automated axial component placement and wave soldering fixtures |
Applications
| Voltage Reference for ADC/DAC | Power Supply Feedback Loop |
|---|---|
Use Scenario: Providing stable 14 V reference to 12-bit SAR ADC reference input in battery-powered sensor node. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise full-scale input range for analog-to-digital conversion. Use Value: Enables <1 LSB integral nonlinearity error by maintaining <0.7 V total variation across operating temperature and supply range. | Use Scenario: Regulating output voltage in isolated flyback converter using TL431 secondary-side feedback. IC Role / Device Role / Timing Role: Zener clamp protecting TL431 cathode from transient overvoltage during startup or fault conditions. Use Value: Prevents TL431 latch-up by limiting cathode voltage to ≤14.7 V, preserving loop stability and safety margin. |
| Overvoltage Protection Clamp | Microcontroller Reset Circuit |
Use Scenario: Clamping 12 V rail against ESD or load dump transients in automotive body control module. IC Role / Device Role / Timing Role: Two-terminal transient voltage suppressor absorbing energy above 14.7 V threshold. Use Value: Limits peak rail voltage to safe level for downstream 12 V logic ICs without adding series resistance or delay. | Use Scenario: Generating clean reset signal for STM32F4 microcontroller during brown-out recovery. IC Role / Device Role / Timing Role: Precision voltage detector element in RC-based reset timing network. Use Value: Triggers reset assertion at 13.3 V (–5%) to ensure core voltage remains within spec before release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal, 1 Ω ZZ, 5% tolerance, DO-41 package | Lower voltage, lower impedance, larger package footprint | Select when tighter regulation at higher current is required and board space permits DO-41 |
| BZX55C15 | 15 V nominal, 30 Ω ZZ, 5% tolerance, DO-35 package | Higher voltage, higher impedance, same DO-35 form factor | Choose for 15 V systems where 1 V margin suffices and existing DO-35 layout must be retained |
Compared with 1N5244B_T50A, 1N4742A offers superior regulation at 20 mA but requires PCB rework for DO-41; BZX55C15 maintains DO-35 compatibility but trades 1 V higher nominal voltage and reduced regulation stiffness for identical mounting.
Availability
1N5244B_T50A is available at Aetrix Electronics and suitable for voltage reference, power supply feedback, and overvoltage protection applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for 1N5244B_T50A 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 power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N52xxB series is part of ON Semiconductor's legacy Zener diode portfolio, engineered for general-purpose voltage regulation and reference functions in cost-sensitive, low-power linear circuits.
FAQ
What is the Zener voltage tolerance of the 1N5244B_T50A?
The 1N5244B_T50A has a ±5% Zener voltage tolerance, meaning its breakdown voltage is guaranteed between 13.3 V and 14.7 V when measured at IZ = 5 mA and thermal equilibrium conditions. This tolerance reflects manufacturing consistency for cost-effective voltage referencing without post-assembly calibration.
Can the 1N5244B_T50A be used in surface-mount designs?
No, the 1N5244B_T50A uses a DO-35 axial glass package with leads intended for through-hole mounting. It is not compatible with SMT reflow or pick-and-place processes. For surface-mount equivalents, consider ON Semiconductor's MMBZ5244B or similar SOD-123 packaged Zeners.
What is the maximum junction temperature for the 1N5244B_T50A?
The 1N5244B_T50A has an operating junction temperature range of –65°C to +200°C. Its power dissipation must be derated by 4.0 mW/°C above 50°C ambient, limiting usable power to 400 mW at 75°C ambient to maintain reliability within this junction limit.
How does the temperature coefficient affect the 1N5244B_T50A in precision circuits?
The 1N5244B_T50A has a positive temperature coefficient of +0.080 %/°C, causing its Zener voltage to increase by approximately 11.2 mV per °C rise. In precision references, this drift must be compensated via circuit topology (e.g., complementary TC components) or limited to narrow ambient ranges to hold total error within specification.
Is the 1N5244B_T50A RoHS compliant?
Yes, the 1N5244B_T50A meets RoHS Directive 2011/65/EU requirements as confirmed by ON Semiconductor's material declarations. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and complies with EU REACH SVHC thresholds.
1N5244B_T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5244B_T50A FAQ
1.How can I place an order for 1N5244B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5244B_T50A 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 1N5244B_T50A reliable?
The price and inventory of 1N5244B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5244B_T50A is usually 5 days.
3.What payment methods are accepted for 1N5244B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5244B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5244B_T50A?
1N5244B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5244B_T50A 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 1N5244B_T50A?
For technical support, including 1N5244B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5244B_T50A requirements.
6.How does Aetrix verify that 1N5244B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N5244B_T50A 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 1N5244B_T50A meets industry standards.
7.What is the process for return or replacement of 1N5244B_T50A?
All 1N5244B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5244B_T50A, 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 1N5244B_T50A part is unused and in its original packaging.
Return procedure for 1N5244B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5244B_T50A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
