My Inquiry
My Account
onsemi 1N6017B_T50R
- Part No.:
- 1N6017B_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6017B_T50R.pdf
- Description:
- DIODE ZENER 51V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:6,628
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N6017B_T50R from Fairchild Semiconductor is a 51 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C, with 2 mA test current, 180 Ω zener impedance at IZ, and 0.1 mA leakage current at 39 V reverse voltage - used for precision voltage regulation in low-power analog reference circuits.
For engineers reviewing the 1N6017B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode identification, and direct-fit alternatives for stable voltage reference design and overvoltage protection in industrial sensor interfaces and power supply feedback loops.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ tolerance (±5%) and specified dynamic impedance (ZZ = 180 Ω @ IZ = 2 mA), enabling stable reference generation under varying load conditions. Its DO-35 glass package supports axial lead mounting and provides hermetic sealing for reliability in temperature-cycled environments.
The device follows JEDEC-standard 1N-series marking (cathode band + "F" logo + "01" + "7B") and complies with Fairchild's absolute maximum ratings: TJ/TSTG = –65°C to +200°C, PD = 500 mW at TL ≤ 75°C, with linear derating of 4.0 mW/°C above that temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 48.45 V min / 51 V typ / 53.55 V max @ IZ = 2 mA - defines regulated output voltage window for feedback or reference use. |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling before thermal derating applies. |
| Zener Impedance (ZZ) | 180 Ω @ IZ = 2 mA - determines AC regulation stability and ripple rejection capability. |
| Leakage Current (IR) | 0.1 mA @ VR = 39 V - ensures minimal error current in high-impedance reference nodes. |
| Max Zener Current (IZM) | 180 mA - derived from VZ and PD limits; defines peak safe DC current under worst-case regulation. |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - relevant for reverse-polarity protection or dual-use rectifier applications. |
| Operating Temp Range | –65°C to +200°C - enables deployment in extended-temperature industrial and automotive under-hood environments. |
Pinout & Package
DO-35 glass axial-leaded package with cathode identified by a single color band on the body. Leads are tinned copper-clad steel, 0.46 mm diameter, 25.4 mm minimum length. No polarity-sensitive PCB footprint - orientation determined solely by cathode band placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower potential in Zener regulation | Accepts forward current up to 200 mA; forms return path in shunt regulator configuration. |
| Cathode | Current exit terminal in forward bias; connected to higher potential in Zener regulation | Marked by color band; carries regulated output voltage in shunt reference applications. |
Key Features
| Feature | Design Value |
|---|---|
| ±5% VZ tolerance | Enables accurate voltage setting without external trimming in cost-sensitive reference designs. |
| DO-35 glass package | Provides hermetic seal and thermal stability for long-term drift < 0.05%/1000 hrs at rated stress. |
| 180 Ω dynamic impedance | Minimizes output voltage variation under load transients in feedback networks. |
| 0.1 mA IR @ 39 V | Reduces quiescent error current in high-gain op-amp reference buffers. |
| –65°C to +200°C operation | Supports use in unheated outdoor enclosures and engine-control modules without derating. |
Applications
| Industrial Sensor Reference | Switch-Mode Power Supply Feedback |
|---|---|
|
Use Scenario: Precision 5V or 12V reference for RTD, thermocouple, or pressure transducer signal conditioning circuits. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias point for instrumentation amplifiers and ADC drivers. Use Value: Tight ±5% VZ and low ZZ ensure <0.5% total reference error across temperature and line variations. |
Use Scenario: Secondary-side voltage sensing in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Zener clamp in optocoupler feedback loop to regulate output voltage via TL431-compatible interface. Use Value: 51 V rating allows direct use with 24 V or 48 V outputs using simple resistor divider scaling. |
| Overvoltage Protection Clamp | Low-Power Analog Calibration |
|
Use Scenario: Input protection for microcontroller GPIOs or analog front-ends exposed to transient surges. IC Role / Device Role / Timing Role: Passive crowbar element limiting voltage to 53.55 V during ESD or inductive kick events. Use Value: Fast response (<1 ns) and 180 mA IZM enable reliable clamping without latch-up in 3.3 V/5 V systems. |
Use Scenario: Factory-set calibration voltage for programmable gain amplifiers or DAC offset trimming. IC Role / Device Role / Timing Role: Stable, non-adjustable reference node during production test and trim procedures. Use Value: Low 0.1 mA leakage avoids loading high-impedance trim potentiometers or laser-trimmed resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6017B (ON Semiconductor) | Identical VZ range (48.45–53.55 V), same DO-35 package, but 200 mW PD rating and 250 Ω ZZ @ 2 mA. | Lower power handling requires reduced IZ or heatsinking in sustained regulation; higher ZZ increases ripple sensitivity. | Select when legacy ON Semi sourcing is required and thermal margin exists. |
| BZX55-C51 (Vishay) | Same nominal 51 V rating, ±5% tolerance, DO-35 package, but 500 mW PD and 170 Ω ZZ @ 5 mA (not 2 mA). | Test current mismatch means actual regulation point differs; requires recalculation of series resistor for target IZ. | Choose for multi-source procurement where 5 mA test condition aligns with system bias design. |
Compared with 1N6017B_T50R, the ON Semiconductor 1N6017B offers identical voltage specs but lower power and higher impedance, while the Vishay BZX55-C51 matches power rating but shifts test current and impedance conditions - both require validation of thermal and dynamic performance in the target circuit.
Availability
1N6017B_T50R is available at Aetrix Electronics and suitable for industrial sensor reference, switch-mode power supply feedback, and overvoltage protection clamp applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for 1N6017B_T50R 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. Its Zener diode portfolio emphasized precision, reliability, and wide-temperature operation.
The 1N5985B–1N6025B family was designed for general-purpose and industrial-grade voltage regulation, targeting applications demanding tight tolerance, low leakage, and robust thermal performance in compact DO-35 packaging.
FAQ
What is the nominal Zener voltage of the 1N6017B_T50R?
The 1N6017B_T50R has a nominal Zener voltage of 51 V, with a guaranteed range of 48.45 V (min) to 53.55 V (max) at 2 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, per Fairchild's characterization methodology.
Does the 1N6017B_T50R have a cathode marking, and how is it identified?
Yes, the 1N6017B_T50R uses a single color band on the DO-35 glass body to denote the cathode terminal. The marking layout follows Fairchild's standard: first line is the "F" logo, second line reads "01", and third line reads "7B". This matches JEDEC 1N-series conventions and ensures unambiguous polarity identification during manual or automated assembly.
What is the maximum allowable power dissipation for the 1N6017B_T50R at 100°C lead temperature?
At 100°C lead temperature, the 1N6017B_T50R must be derated from its 500 mW rating at ≤75°C. With a derating factor of 4.0 mW/°C, the allowable power is 500 mW − (100 − 75) × 4.0 mW = 400 mW. Exceeding this risks thermal runaway or accelerated parameter drift.
Can the 1N6017B_T50R be used as a forward-biased diode, and what is its forward voltage specification?
Yes, the 1N6017B_T50R can operate in forward bias. Its forward voltage is specified as ≤1.2 V at 200 mA forward current. This makes it suitable for low-voltage clamping or polarity protection functions, though its primary design intent remains reverse-bias Zener regulation.
How does the zener impedance of the 1N6017B_T50R affect its performance in a voltage reference circuit?
The 1N6017B_T50R exhibits 180 Ω zener impedance at 2 mA test current, meaning a 1 mA change in Zener current causes ~180 mV output variation. In precision reference designs, this necessitates stable bias current and low-noise filtering to maintain regulation accuracy - especially critical in high-gain sensor signal chains where even small VZ drift degrades measurement fidelity.
1N6017B_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 180 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 39 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
1N6017B_T50R FAQ
1.How can I place an order for 1N6017B_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6017B_T50R 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 1N6017B_T50R reliable?
The price and inventory of 1N6017B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6017B_T50R is usually 5 days.
3.What payment methods are accepted for 1N6017B_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6017B_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6017B_T50R?
1N6017B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6017B_T50R 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 1N6017B_T50R?
For technical support, including 1N6017B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6017B_T50R requirements.
6.How does Aetrix verify that 1N6017B_T50R is sourced from the original manufacturer or authorized distributors?
All 1N6017B_T50R 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 1N6017B_T50R meets industry standards.
7.What is the process for return or replacement of 1N6017B_T50R?
All 1N6017B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N6017B_T50R, 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 1N6017B_T50R part is unused and in its original packaging.
Return procedure for 1N6017B_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6017B_T50R 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…
