My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1N5244B-TR
- Part No.:
- 1N5244B-TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5244B-TR.pdf
- Description:
- DIODE ZENER 14V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5244B-TR from Vishay Semiconductors is a silicon planar Zener diode with nominal zener voltage 14 V, ±5 % tolerance (B-suffix), 500 mW power rating, and DO-35 package. It operates at 9 mA test current, exhibits 10 Ω dynamic resistance at IZT, and provides stable voltage reference in low-power linear regulators and overvoltage protection circuits.
For engineers reviewing the 1N5244B-TR datasheet, 1N5244B-TR pinout, 1N5244B-TR application, or 1N5244B-TR equivalent, key selection criteria include zener voltage accuracy, thermal resistance (300 K/W), reverse leakage (<0.1 μA at 11.2 V), temperature coefficient (+0.082 %/K), and DO-35 leaded package compatibility with through-hole PCB assembly.
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference device operating in reverse breakdown. Its electrical behavior is defined by DC zener voltage specification at thermal equilibrium, with test conditions requiring 9 mA current and 9.5 mm lead length per JEDEC standards.
The device features a negative-to-positive temperature coefficient transition near 5 V; at 14 V, it exhibits a positive +0.082 %/K coefficient, enabling predictable drift compensation in bias networks. Thermal resistance junction-to-ambient is 300 K/W under standard mounting (4 mm lead length, TL constant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14 V nominal, ±5 % tolerance - defines precise clamping/reference level for analog feedback or protection thresholds |
| Power Dissipation (Ptot) | 500 mW at TL ≤ 25 °C - sets maximum continuous power handling without heatsinking |
| Test Current (IZT) | 9 mA - standardized bias point for VZ measurement and dynamic resistance characterization |
| Dynamic Resistance (ZZ) | 10 Ω at IZT = 9 mA - determines regulation stiffness and output impedance in shunt regulator designs |
| Reverse Leakage (IR) | <0.1 μA at VR = 11.2 V - ensures minimal quiescent current draw in high-impedance reference nodes |
| Temperature Coefficient (αVZ) | +0.082 %/K - quantifies voltage drift per degree Celsius, critical for temperature-stable biasing |
| Junction Temperature (Tj) | 175 °C maximum - defines upper thermal limit for reliable long-term operation |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package with cathode band marking; total weight ≈125 mg, UL 94 V-0 molding compound, MSL Level 1, peak solder temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node in shunt configuration | Connected to circuit ground or lower-potential rail; carries forward current up to 200 mA (VF ≤ 1.1 V) |
| Cathode | Zener breakdown terminal / Voltage reference output node | Marked with band; supplies regulated 14 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar construction | Enables tight process control for consistent VZ distribution and low parameter spread across production lots |
| ±5 % zener voltage tolerance (B-suffix) | Reduces binning cost vs. tighter-tolerance variants while maintaining adequate accuracy for non-critical references |
| 300 K/W thermal resistance (junction-to-ambient) | Supports natural convection cooling in compact through-hole layouts without forced airflow or heatsinks |
| 175 °C maximum junction temperature | Permits operation in industrial environments with elevated ambient temperatures or localized heating |
| UL 94 V-0 flammability rating | Meets safety requirements for flame-retardant enclosure integration in certified end equipment |
Applications
| Voltage Reference for Op-Amp Biasing | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Providing stable 14 V reference to bias input stages of precision instrumentation amplifiers in data acquisition systems. IC Role / Device Role / Timing Role: Shunt voltage reference supplying fixed potential to op-amp non-inverting inputs and gain-setting networks. Use Value: Enables accurate offset nulling and common-mode rejection with <0.1 μA leakage-induced error at 1 MΩ source impedance. | Use Scenario: Protecting 12 V automotive sensor signal lines from load-dump transients exceeding 24 V. IC Role / Device Role / Timing Role: Passive overvoltage clamp limiting rail voltage to 14 V during surge events. Use Value: Absorbs 500 mW transient energy without degradation, preventing downstream ADC or microcontroller damage. |
| Low-Power Linear Regulator Shunt Element | Microcontroller Reset Circuit Reference |
Use Scenario: Acting as series-pass shunt element in ultra-low-quiescent-current 14 V regulators for battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener-based shunt regulator controlling base drive of PNP pass transistor. Use Value: Delivers 14 V ±5 % regulation at 1–10 mA load range with <10 Ω output impedance for ripple suppression. | Use Scenario: Generating precise reset threshold for 14 V supply monitoring in industrial PLC modules. IC Role / Device Role / Timing Role: Voltage-sensing element triggering reset IC when supply falls below 14 V × 0.95 = 13.3 V. Use Value: Provides deterministic reset activation with <0.1 μA leakage ensuring no false triggers from pull-up current errors. |
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, ±5 %, 1 W power rating, DO-41 package | Higher power handling but lower voltage; requires different PCB footprint and thermal layout | Select when 12 V reference is acceptable and higher surge energy absorption is needed |
| MMSZ5244T1G | 14 V nominal, ±5 %, 500 mW, SOD-123 surface-mount package | Same electrical specs but leadless SMT form factor; incompatible with through-hole assembly | Select for space-constrained PCBs where reflow-compatible packaging is required |
Compared with 1N5244B-TR, 1N4742A offers higher power (1 W) at lower voltage (12 V) in larger DO-41, while MMSZ5244T1G matches 14 V/500 mW specs but requires SMT layout changes - neither is pin-compatible, and substitution demands mechanical and thermal redesign.
Availability
1N5244B-TR is available at Aetrix Electronics and suitable for voltage stabilization, overvoltage protection, and precision biasing applications requiring stable component supply in industrial control, sensor interface, and embedded power management designs.
Supply support for 1N5244B-TR 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
Vishay Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability diodes, MOSFETs, and resistors for industrial and automotive markets.
The 1N52xx family targets general-purpose Zener reference and protection applications, emphasizing tight voltage tolerance control, robust thermal performance, and legacy through-hole compatibility for maintenance and retrofit use cases.
FAQ
What is the zener voltage tolerance for 1N5244B-TR?
The "B" suffix in 1N5244B-TR indicates a standard ±5 % zener voltage tolerance, meaning its measured breakdown voltage at 9 mA test current falls between 13.3 V and 14.7 V under thermal equilibrium conditions per Vishay Document 85588.
What package type does 1N5244B-TR use?
1N5244B-TR uses the DO-35 (DO-204AH) axial-leaded glass package with cathode band marking, approximately 3.9 mm in diameter and 26 mm in length, rated for MSL Level 1 and peak solder temperature of 260 °C.
What is the maximum power dissipation of 1N5244B-TR?
The absolute maximum power dissipation for 1N5244B-TR is 500 mW at lead temperature ≤ 25 °C, derating linearly above that ambient condition with a thermal resistance of 300 K/W under standard 4 mm lead length mounting.
How does temperature affect the zener voltage of 1N5244B-TR?
1N5244B-TR has a positive temperature coefficient of +0.082 %/K, meaning its zener voltage increases by approximately 11.5 mV per °C rise in junction temperature - a key factor in precision bias network stability over industrial temperature ranges.
Is 1N5244B-TR suitable for surface-mount assembly?
No, 1N5244B-TR is not suitable for surface-mount assembly; it is a through-hole DO-35 device. For SMT equivalents with identical 14 V/±5 % specs, consider Vishay's MMSZ5244T1G in SOD-123 package - but note that 1N5244B-TR itself requires axial insertion and wave/reflow-compatible lead finishing.
1N5244B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1.1 V @ 200 mA
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5244B-TR FAQ
1.How can I place an order for 1N5244B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5244B-TR 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-TR reliable?
The price and inventory of 1N5244B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5244B-TR is usually 5 days.
3.What payment methods are accepted for 1N5244B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5244B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5244B-TR?
1N5244B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5244B-TR 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-TR?
For technical support, including 1N5244B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5244B-TR requirements.
6.How does Aetrix verify that 1N5244B-TR is sourced from the original manufacturer or authorized distributors?
All 1N5244B-TR 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-TR meets industry standards.
7.What is the process for return or replacement of 1N5244B-TR?
All 1N5244B-TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5244B-TR, 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-TR part is unused and in its original packaging.
Return procedure for 1N5244B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5244B-TR 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
