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onsemi 1N6003B_T50A
- Part No.:
- 1N6003B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6003B_T50A.pdf
- Description:
- DIODE ZENER 13V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,101
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Product details
Overview
1N6003B_T50A from Fairchild Semiconductor is a 13 V, ±5% tolerance Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the 1N6003B_T50A datasheet, pinout, applications, or equivalent options, key selection factors include its 13 V nominal Zener voltage at 5 mA test current, 25 Ω dynamic impedance at IZ, 0.1 mA leakage at 9.9 V reverse bias, and DO-35 mechanical compatibility in space-constrained designs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across load variations. Its thermal equilibrium Zener voltage measurement condition (TL = 30°C ± 1°C, 3/8″ lead length) ensures repeatable calibration under standard test conditions.
The device's maximum Zener current (IZM = 38 mA) is derived from its 13 V nominal voltage and power derating curve, while its low 250 μA knee current (ZZK = 600 Ω) supports reliable turn-on behavior in low-current reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ IZ | 12.35–13.65 V at 5 mA test current; defines usable regulation window for 13 V nominal reference |
| PD | 500 mW at TL ≤ 75°C; sets maximum continuous power handling before thermal derating begins |
| ZZ @ IZ | 25 Ω at 5 mA; indicates low dynamic impedance for stable output under small-signal load changes |
| IR @ VR | 0.1 mA at 9.9 V reverse bias; confirms minimal leakage below breakdown, critical for battery-powered references |
| IZM | 38 mA maximum Zener current; calculated from power limit and actual VZ, constraining peak surge capability |
| TJ Range | –65 to +200°C operating junction temperature; enables use in extended industrial and automotive under-hood environments |
Pinout & Package
DO-35 glass axial package with cathode band marking; leads are unmarked anode/cathode terminals requiring visual orientation via color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias regulation; serves as ground reference point in shunt regulator topologies |
| Cathode | Zener breakdown terminal / voltage regulation node | Connected to higher-potential side; maintains regulated voltage relative to anode; marked by color band per JEDEC DO-35 standard |
Key Features
| Feature | Design Value |
|---|---|
| ±5% VZ tolerance | Enables predictable 13 V regulation without post-production trimming in cost-sensitive consumer and industrial controls |
| DO-35 glass package | Provides hermetic sealing and thermal stability for long-term voltage reference drift < 0.01%/1000 hrs |
| Low ZZK = 600 Ω @ 250 μA | Ensures defined knee behavior for soft-start and low-current biasing in sensor signal conditioning |
| VF = 1.2 V max @ 200 mA | Supports bidirectional protection use cases where forward conduction must remain low-loss during transient events |
Applications
| Industrial Sensor Reference | Power Supply Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 13 V reference for 4–20 mA transmitter ICs in process control loop transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise excitation voltage for current-loop DACs and op-amp bias networks. Use Value: Tight ±5% VZ tolerance and low 25 Ω dynamic impedance ensure < 0.5% total error contribution to loop accuracy over temperature. | Use Scenario: Clamping 12 V rail against surges in automotive body-control modules during load-dump events. IC Role / Device Role / Timing Role: Passive overvoltage protector diverting transient energy to ground when rail exceeds 13.65 V. Use Value: 38 mA IZM rating and 200°C max junction temperature allow brief surge absorption without thermal runaway. |
| Low-Power Analog Front-End | Microcontroller Reset Circuit |
Use Scenario: Biasing precision op-amps and ADC references in battery-powered IoT sensor nodes. IC Role / Device Role / Timing Role: Low-leakage (0.1 mA @ 9.9 V) voltage reference enabling multi-year operation on coin-cell batteries. Use Value: Sub-μA standby current draw preserves battery life while maintaining 13 V regulation accuracy within ±1% over –40 to +85°C. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers powered from switched 12 V supplies. IC Role / Device Role / Timing Role: Zener-based voltage divider feeding RC network to MCU reset pin for brown-out detection. Use Value: Stable 13 V breakdown enables accurate scaling to 3.3 V reset threshold with < 2% tolerance propagation. |
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%, DO-41 package, 1.0 W rating, 22 Ω ZZ @ 21 mA | Higher power rating suits higher-current clamping; larger DO-41 footprint requires PCB redesign | Select when >500 mW dissipation or >21 mA test current is required; not drop-in due to package and IZ mismatch |
| BZX55-C13 | 13 V nominal, ±5%, DO-35 package, 500 mW rating, 30 Ω ZZ @ 5 mA | Nearly identical electrical specs but different marking and traceability; manufactured by ON Semiconductor | Preferred for dual-sourcing where same DO-35 form factor and 5 mA test point are mandatory |
Compared with 1N6003B_T50A, 1N4742A offers higher power but requires layout change, while BZX55-C13 matches package and regulation point exactly but differs in manufacturer qualification and lot traceability protocols.
Availability
1N6003B_T50A is available at Aetrix Electronics and suitable for industrial sensor reference, power supply overvoltage clamp, and low-power analog front-end applications requiring stable component supply and long-lifecycle support.
Supply support for 1N6003B_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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The 1N5985B–1N6025B series was designed for general-purpose precision voltage regulation in cost-sensitive industrial, consumer, and automotive auxiliary systems using standardized DO-35 packaging.
FAQ
What is the nominal Zener voltage of the 1N6003B_T50A?
The 1N6003B_T50A has a nominal Zener voltage of 13 V, with a guaranteed range of 12.35 V to 13.65 V at 5 mA test current and ±5% tolerance. This value is measured under thermal equilibrium at lead temperature TL = 30°C ± 1°C with 3/8″ lead length, as specified in the Fairchild 1N5985B–1N6025B datasheet Rev. C2.
What package type does the 1N6003B_T50A use?
The 1N6003B_T50A uses a DO-35 glass axial package with cathode identified by a color band. It conforms to JEDEC DO-35 mechanical dimensions and marking standards, including 2.0 mm diameter glass body and 0.46 mm lead diameter, enabling compatibility with automated axial insertion equipment and legacy through-hole layouts.
What is the maximum Zener current (IZM) for the 1N6003B_T50A?
The maximum Zener current IZM for the 1N6003B_T50A is 38 mA. This value is derived from its 500 mW power rating and typical Zener voltage of 13 V, and represents the highest continuous reverse current the device can sustain without exceeding thermal limits under worst-case operating conditions.
Does the 1N6003B_T50A have a specified forward voltage?
Yes, the 1N6003B_T50A has a maximum forward voltage VF of 1.2 V at 200 mA forward current. This parameter supports dual-use scenarios such as bidirectional transient protection, where the device conducts forward during negative surges while regulating in reverse breakdown during positive overvoltage events.
How does the 1N6003B_T50A perform at elevated temperatures?
The 1N6003B_T50A operates across –65°C to +200°C junction temperature. Its power dissipation derates linearly at 4.0 mW/°C above 75°C lead temperature, and its Zener voltage exhibits a positive temperature coefficient typical of 13 V Zeners - approximately +0.075%/°C - ensuring predictable regulation shift in high-temperature environments.
1N6003B_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):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9.9 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
1N6003B_T50A FAQ
1.How can I place an order for 1N6003B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6003B_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 1N6003B_T50A reliable?
The price and inventory of 1N6003B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6003B_T50A is usually 5 days.
3.What payment methods are accepted for 1N6003B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6003B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6003B_T50A?
1N6003B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6003B_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 1N6003B_T50A?
For technical support, including 1N6003B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6003B_T50A requirements.
6.How does Aetrix verify that 1N6003B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N6003B_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 1N6003B_T50A meets industry standards.
7.What is the process for return or replacement of 1N6003B_T50A?
All 1N6003B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6003B_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 1N6003B_T50A part is unused and in its original packaging.
Return procedure for 1N6003B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6003B_T50A Tags
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