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Vishay General Semiconductor - Diodes Division TZX13B-TAP
- Part No.:
- TZX13B-TAP
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
TZX13B-TAP.pdf
- Description:
- DIODE ZENER 13V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,980
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Product details
Overview
TZX13B-TAP from Vishay Semiconductors is a silicon planar Zener diode in DO-35 package, designed for precision voltage regulation at 12.6–13.1 V nominal Zener voltage with 5 mA test current, 10 µA max reverse leakage at 10 V, 35 Ω dynamic resistance, and 500 mW power dissipation - used in low-noise reference circuits and analog sensor biasing.
For engineers reviewing the TZX13B-TAP datasheet, TZX13B-TAP pinout, TZX13B-TAP application, or TZX13B-TAP equivalent, this page delivers verified electrical parameters, DO-35 terminal mapping, real-world stabilization use cases, and two validated alternative Zeners with documented voltage tolerance and impedance differences.
Technical Context
The TZX13B-TAP operates as a single-element, two-terminal voltage reference device with sharp reverse breakdown characteristic and low noise performance. Its thermal resistance junction-to-ambient is 300 K/W at 4 mm lead length, and it maintains stable regulation across -65 °C to +175 °C storage temperature range.
Zener voltage is specified at 5 mA test current (IZT1), with dynamic resistance measured at same condition. Reverse leakage is guaranteed ≤10 µA at VR = 10 V, and forward voltage is ≤1.5 V at 200 mA - confirming suitability for bidirectional protection and low-drop reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.6–13.1 V at IZT = 5 mA - defines precise regulation point for 13 V reference designs |
| Dynamic Resistance (ZZ) | 35 Ω at IZT = 5 mA - ensures minimal output voltage shift under load variation |
| Reverse Leakage Current (IR) | ≤10 µA at VR = 10 V - guarantees low standby power loss in battery-powered circuits |
| Power Dissipation (Ptot) | 500 mW at TL = 25 °C with 4 mm leads - sets maximum continuous operating power limit |
| Junction Temperature (Tj) | 175 °C maximum - enables reliable operation in industrial and automotive under-hood environments |
| Forward Voltage (VF) | ≤1.5 V at IF = 200 mA - supports use as clamping diode in dual-polarity protection schemes |
Pinout & Package
DO-35 (DO-204AH) glass axial package with cathode band marking; total weight ≈125 mg, UL 94 V-0 molding compound, MSL level 1, peak soldering temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower potential node; enables forward conduction path and clamping function |
| Cathode | Current exit terminal in forward bias; Zener breakdown terminal in reverse bias | Marked with band; connected to regulated voltage rail; defines reference polarity and breakdown direction |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp reverse characteristic | Enables tight regulation tolerance and fast response to input transients without overshoot |
| Low reverse current level | ≤10 µA at 10 V allows integration into ultra-low-power sensor interfaces and battery monitoring |
| Very high stability | Guaranteed long-term voltage drift < ±1 % over 1000 hours supports precision calibration retention |
| Low noise | Sub-microvolt RMS noise floor preserves signal integrity in ADC reference and op-amp feedback paths |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 13 V bias to strain gauge bridges. Use Value: 35 Ω dynamic resistance minimizes output error under varying bridge loading; low noise prevents ADC quantization errors. |
Use Scenario: Supplying clean, stable reference to internal ADC of ARM Cortex-M0+ microcontrollers in portable medical devices. IC Role / Device Role / Timing Role: Precision analog reference source replacing higher-cost bandgap ICs where 1% accuracy suffices. Use Value: 10 µA reverse leakage extends battery life beyond 5 years in sleep-mode operation. |
| Automotive Cabin Control Panel | Legacy Industrial Power Supply Feedback |
Use Scenario: Regulating 13 V rail for LED backlight drivers and touch controller ICs in HVAC control head units. IC Role / Device Role / Timing Role: Primary voltage stabilizer in non-isolated 12 V system derivative supply. Use Value: 175 °C junction rating ensures reliability during prolonged dashboard exposure at 85 °C ambient. |
Use Scenario: Providing feedback voltage to TL431-based shunt regulator in 24 V industrial SMPS. IC Role / Device Role / Timing Role: Secondary reference element improving loop stability against line/load variations. Use Value: Sharp reverse knee reduces phase margin degradation in closed-loop compensation networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C13 | 13 V nominal (12.35–13.65 V), 5 mA IZT, 30 Ω ZZ, 500 mW Ptot, DO-35 package | Narrower VZ tolerance (±5 % vs. TZX13B-TAP's ±2.0 %), slightly lower dynamic resistance | Select when tighter VZ tolerance is not required and cost sensitivity dominates design trade-offs. |
| 1N4742A | 12 V nominal (11.4–12.6 V), 21 mA IZT, 9 Ω ZZ, 1 W Ptot, DO-41 package | Lower nominal voltage, higher power rating, larger DO-41 footprint, incompatible pin spacing | Choose only if 12 V regulation and >500 mW dissipation are mandatory; requires PCB layout change. |
Compared with BZX55C13 and 1N4742A, the TZX13B-TAP offers tighter voltage tolerance and DO-35 compatibility for space-constrained designs, while delivering lower leakage and higher thermal stability than the 1N4742A - making it optimal for precision analog and embedded reference applications where board area and long-term drift matter.
Availability
TZX13B-TAP is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reference, automotive cabin electronics, and legacy power supply feedback requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for TZX13B-TAP 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 leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The TZX-Series is part of Vishay's small-signal Zener diode family engineered for precision voltage stabilization in space-constrained, low-noise analog systems - emphasizing sharp breakdown, low leakage, and long-term parameter stability.
FAQ
What is the exact Zener voltage range for TZX13B-TAP?
The TZX13B-TAP has a guaranteed Zener voltage range of 12.6 V minimum to 13.1 V maximum when tested at 5 mA (IZT1), per Vishay document 85614 Rev. 2.7. This 0.5 V span reflects its ±2.0 % tolerance grade and ensures predictable regulation behavior in 13 V reference designs without external trimming.
Does TZX13B-TAP require derating above 25 °C ambient?
Yes, TZX13B-TAP must be derated linearly above 25 °C ambient temperature. Its absolute maximum power dissipation drops from 500 mW at 25 °C to zero at 175 °C junction temperature, with thermal resistance of 300 K/W at 4 mm lead length - meaning usable power falls to ~350 mW at 75 °C ambient.
Is TZX13B-TAP suitable for use as an ESD protection device?
No, TZX13B-TAP is not rated or characterized for ESD protection. It lacks specified IEC 61000-4-2 or ISO 10605 surge capability, and its 500 mW power rating is insufficient for transient energy absorption. Use dedicated TVS diodes like SMAJ13A for ESD/clamp applications instead of TZX13B-TAP.
What is the cathode identification method on TZX13B-TAP?
The cathode of TZX13B-TAP is identified by a distinct color band (typically black or dark gray) located near one end of the DO-35 glass body. Per Vishay package drawing SB-V-3906.04-031(4), this band marks the cathode terminal, which must connect to the higher-potential node during Zener operation.
Can TZX13B-TAP replace TZX13A in existing designs?
Yes, TZX13B-TAP can directly replace TZX13A in most applications: both share identical DO-35 package, 5 mA test current, 35 Ω dynamic resistance, and 500 mW rating. The only difference is tighter voltage range - TZX13A is 12.4–12.9 V, while TZX13B-TAP is 12.6–13.1 V - offering improved consistency in 13 V reference circuits.
TZX13B-TAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- TZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
TZX13B-TAP FAQ
1.How can I place an order for TZX13B-TAP through Aetrix?
Please submit a Request for Quotation (RFQ) for TZX13B-TAP 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 TZX13B-TAP reliable?
The price and inventory of TZX13B-TAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZX13B-TAP is usually 5 days.
3.What payment methods are accepted for TZX13B-TAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZX13B-TAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TZX13B-TAP?
TZX13B-TAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TZX13B-TAP 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 TZX13B-TAP?
For technical support, including TZX13B-TAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZX13B-TAP requirements.
6.How does Aetrix verify that TZX13B-TAP is sourced from the original manufacturer or authorized distributors?
All TZX13B-TAP 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 TZX13B-TAP meets industry standards.
7.What is the process for return or replacement of TZX13B-TAP?
All TZX13B-TAP units undergo pre-shipment inspection (PSI). If there is an issue with TZX13B-TAP, 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 TZX13B-TAP part is unused and in its original packaging.
Return procedure for TZX13B-TAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TZX13B-TAP Tags
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