My Inquiry
My Account
onsemi 1N964B_T50A
- Part No.:
- 1N964B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N964B_T50A.pdf
- Description:
- DIODE ZENER 13V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:6,357
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N964B_T50A from Fairchild Semiconductor is a 13 V, 5% tolerance, 500 mW glass-encapsulated Zener diode in DO-35 package, designed for precision voltage regulation and reference applications at 9.5 mA test current, with 24 Ω dynamic impedance and 0.25 μA reverse leakage at 9.9 V.
For engineers reviewing the 1N964B_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy (12.35–13.65 V), thermal stability over –65°C to +200°C, low dynamic impedance for stable regulation, and DO-35 mechanical compatibility in space-constrained analog circuits.
Technical Context
The 1N964B_T50A operates as a two-terminal voltage reference device, maintaining a stable breakdown voltage across its anode–cathode junction under reverse bias. Its zener mechanism dominates in the 13 V range, delivering predictable regulation with minimal temperature coefficient drift.
It is rated for 500 mW power dissipation at lead temperature ≤75°C, derating linearly at 4.0 mW/°C above that threshold. The device meets MIL-STD-19500/205 requirements for reliability and is specified with 5% tolerance, 24 Ω zener impedance at IZ = 9.5 mA, and 0.25 μA maximum reverse leakage at VR = 9.9 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.35–13.65 V at IZ = 9.5 mA - defines nominal regulation point with ±5% tolerance for stable reference generation |
| Zener Impedance (ZZ) | 24 Ω max at IZ = 9.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.25 μA max at VR = 9.9 V - guarantees low standby current in high-impedance bias networks |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling with defined thermal derating slope |
| Operating Temperature | –65°C to +200°C - supports operation in extended industrial, automotive, and aerospace environments |
| Package | DO-35 glass axial - provides hermetic sealing, high reliability, and standard through-hole mounting |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device requiring no external biasing circuitry beyond series current-limiting resistor.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to lower potential side of regulation loop; establishes reference return path |
| Cathode | Zener breakdown terminal / Regulated output node | Provides stable 13 V output when reverse-biased; marked with color band per JEDEC standard |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use without post-manufacturing trimming in mid-precision voltage references |
| 24 Ω dynamic impedance | Minimizes output voltage shift under ±1 mA load variation in feedback networks |
| 0.25 μA reverse leakage | Permits integration into high-impedance divider chains without significant error contribution |
| –65°C to +200°C operating range | Supports deployment in under-hood automotive modules and downhole instrumentation |
Applications
| Power Supply Regulation | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing 12 V rail in discrete linear regulator or op-amp reference stage. IC Role / Device Role / Timing Role: Voltage reference element providing fixed 13 V reference for error amplifier feedback. Use Value: Maintains ±1% output stability over temperature and line variations due to tight VZ tolerance and low ZZ. | Use Scenario: Clamping transient spikes on 12 V automotive sensor lines. IC Role / Device Role / Timing Role: Shunt protection device diverting surge current above 13 V threshold. Use Value: Responds within nanoseconds to clamp voltages before downstream ICs exceed absolute maximum ratings. |
| Instrumentation Reference | Calibration Standard |
Use Scenario: Providing excitation voltage for precision RTD or strain gauge bridges. IC Role / Device Role / Timing Role: Low-drift DC reference source for ratiometric measurement systems. Use Value: Delivers <10 ppm/°C effective TC via matched thermal design and low ZZ, reducing calibration drift. | Use Scenario: Factory-trimmed reference in handheld multimeter front-end. IC Role / Device Role / Timing Role: Primary voltage standard traceable to NIST via batch-controlled process. Use Value: Enables 3½-digit accuracy without active compensation, leveraging ±5% initial tolerance and long-term stability. |
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% tolerance, 1 W rating, DO-41 package | Higher power handling but larger footprint; less suitable for compact DO-35 layouts | Select when >500 mW dissipation or PCB real estate allows DO-41 |
| BZX55C13 | 13 V nominal, 5% tolerance, 500 mW, DO-35 package, tighter VZ tempco | Improved temperature coefficient (−0.05%/°C vs −0.07%/°C typical), same form factor | Prefer for high-stability references where thermal drift dominates error budget |
Compared with 1N964B_T50A, 1N4742A offers higher power but requires layout change, while BZX55C13 matches DO-35 form and improves thermal stability-making it a drop-in upgrade for precision analog designs.
Availability
1N964B_T50A is available at Aetrix Electronics and suitable for power supply regulation, overvoltage protection, and instrumentation reference applications requiring stable component supply and long-lifecycle support.
Supply support for 1N964B_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 1N957B–1N979B family was engineered for general-purpose, high-reliability Zener reference applications in industrial, automotive, and military-grade systems where hermetic DO-35 packaging and wide temperature operation were critical.
FAQ
What is the nominal zener voltage of the 1N964B_T50A?
The 1N964B_T50A has a nominal zener voltage of 13 V, with a guaranteed range of 12.35 V to 13.65 V at IZ = 9.5 mA and TA = 25°C. This 5% tolerance enables use in mid-precision reference circuits without trimming. The 1N964B_T50A achieves this specification using silicon zener junction technology optimized for stability in the 13 V range.
What package type does the 1N964B_T50A use?
The 1N964B_T50A uses a DO-35 glass axial package with cathode identified by a color band. This hermetically sealed package supports operation from –65°C to +200°C and is compatible with standard through-hole assembly processes. The 1N964B_T50A's DO-35 outline measures 1.8–2.2 mm diameter and 4.0–5.0 mm length per JEDEC standards.
What is the maximum power dissipation for the 1N964B_T50A?
The 1N964B_T50A is rated for 500 mW power dissipation at lead temperature ≤75°C, with linear derating of 4.0 mW/°C above that temperature. This limit ensures safe junction operation under continuous reverse bias. The 1N964B_T50A's thermal performance is validated per MIL-STD-19500/205, supporting reliable long-term use in thermally demanding environments.
What is the zener impedance of the 1N964B_T50A at rated test current?
The 1N964B_T50A exhibits a maximum zener impedance (ZZ) of 24 Ω at IZ = 9.5 mA and f = 60 Hz. This value reflects AC impedance measured with 0.1×DC test current, indicating low sensitivity to load variations. The 1N964B_T50A's 24 Ω ZZ contributes directly to output regulation accuracy in feedback and reference circuits.
Does the 1N964B_T50A have a specified reverse leakage current?
Yes-the 1N964B_T50A specifies a maximum reverse leakage current (IR) of 0.25 μA at VR = 9.9 V and TA = 25°C. This ultra-low leakage ensures minimal error in high-impedance bias networks and reference dividers. The 1N964B_T50A's leakage performance is consistent across its qualified temperature range, supporting stable operation in precision analog signal chains.
1N964B_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):
- 13 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 9.9 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N964B_T50A FAQ
1.How can I place an order for 1N964B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N964B_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 1N964B_T50A reliable?
The price and inventory of 1N964B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N964B_T50A is usually 5 days.
3.What payment methods are accepted for 1N964B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N964B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N964B_T50A?
1N964B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N964B_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 1N964B_T50A?
For technical support, including 1N964B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N964B_T50A requirements.
6.How does Aetrix verify that 1N964B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N964B_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 1N964B_T50A meets industry standards.
7.What is the process for return or replacement of 1N964B_T50A?
All 1N964B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N964B_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 1N964B_T50A part is unused and in its original packaging.
Return procedure for 1N964B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N964B_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…
