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Vishay General Semiconductor - Diodes Division Z4KE170A-E3/54
- Part No.:
- Z4KE170A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
Z4KE170A-E3/54.pdf
- Description:
- DIODE ZENER 170V 1.5W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,387
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Product details
Overview
Z4KE170A-E3/54 from Vishay General Semiconductor is a glass passivated 170 V Zener diode in DO-204AL (DO-41) package, rated for 1500 mW total power dissipation at 75 °C lead temperature, with 1200 Ω maximum Zener impedance at 5 mA test current and 0.5 μA maximum reverse leakage at 136.8 V, used for overvoltage protection and voltage regulation in industrial power supplies and automotive ECUs.
For engineers reviewing the Z4KE170A-E3/54 datasheet, Z4KE170A-E3/54 pinout, Z4KE170A-E3/54 application, or Z4KE170A-E3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, 170 V nominal Zener voltage tolerance (±5.3%), low regulation factor, and RoHS-compliant matte tin-plated leads solderable per J-STD-002.
Technical Context
Z4KE170A-E3/54 operates as a single-junction, silicon-based voltage-regulating diode with glass-passivated chip construction. Its Zener breakdown mechanism delivers stable reference voltage under reverse bias, with thermal coefficient optimized for 170 V nominal rating and specified dynamic impedance measured at both IZT = 5 mA and IZK = 0.25 mA.
The device supports pulsed and continuous DC operation up to 8.0 mA maximum Zener current (IZM), with forward voltage limited to 1.0 V at 0.5 A. It complies with JESD 22-B106 (275 °C solder dip, 10 s) and JESD 201 Class 1A whisker testing, confirming suitability for automated placement and high-reliability environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 162–179 V range at 5 mA; ensures ±5.3% regulation tolerance for precision clamping at 170 V nominal |
| Total Power Dissipation (Ptot) | 1500 mW at TL = 75 °C with 9.5 mm lead length; defines thermal derating envelope for PCB layout |
| Zener Impedance (ZZT) | 1200 Ω max at IZT = 5 mA; determines AC regulation stability under varying load currents |
| Reverse Leakage (IR) | 0.5 μA max at VR = 136.8 V (80% of VZ); critical for low-power standby circuit integrity |
| Max Forward Voltage (VFM) | 1.0 V at 0.5 A; enables use as polarity-sensitive clamp or transient suppressor in bidirectional circuits |
| Junction Temperature (TJ) | -55 to +150 °C operating range; supports deployment in under-hood automotive and industrial ambient conditions |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated plastic case with UL 94 V-0 rated molding compound; cathode denoted by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential node in reverse-bias regulation; carries full forward surge current during fault |
| Cathode | Zener breakdown terminal | Connected to regulated rail; color band identifies this end for correct orientation in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements, enabling use in ECU and ADAS power rails |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives in humid environments |
| Low Zener impedance | 1200 Ω max ensures minimal output voltage variation across load transients in feedback loops |
| Matte tin-plated leads | Solderable per J-STD-002 and JESD 22-B102; eliminates lead-free solder wetting issues in reflow assembly |
| RoHS-compliant (E3 suffix) | Fulfills EU Directive 2011/65/EU; no exemptions required for Pb, Cd, Hg, Cr⁶⁺, PBB, or PBDE content |
Applications
| Industrial Power Supply Protection | Automotive ECU Voltage Clamping |
|---|---|
Use Scenario: Protecting 170 V DC bus against load dump surges in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and overvoltage clamp in parallel with bulk capacitor. Use Value: Maintains rail stability within ±5.3% at 5 mA while dissipating up to 1.5 W transient energy without degradation. | Use Scenario: Clamping CAN transceiver supply rail during battery voltage spikes in engine control units. IC Role / Device Role / Timing Role: Standby-mode voltage limiter placed between 12 V system rail and local LDO input. Use Value: 0.5 μA leakage at 136.8 V prevents standby current drain; AEC-Q101 qualification ensures field reliability. |
| Test Equipment Reference Stability | Renewable Energy Inverter Monitoring |
Use Scenario: Providing stable 170 V reference for high-voltage analog-to-digital conversion in calibration-grade multimeters. IC Role / Device Role / Timing Role: Precision Zener reference source in feedback divider network of isolated DC-DC converter. Use Value: 1200 Ω Zener impedance minimizes code-to-code drift during measurement cycles across temperature. | Use Scenario: Monitoring DC link voltage in solar microinverters with 200 V nominal bus architecture. IC Role / Device Role / Timing Role: Overvoltage detection element feeding comparator input for shutdown logic. Use Value: 150 °C max junction temperature allows direct mounting near heatsink; DO-41 form factor simplifies through-hole inspection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-regulating diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4746A-T | 18 V Zener voltage, 1 W power rating, DO-41 package, no AEC-Q101 qualification | Designed for low-voltage consumer electronics; unsuitable for 170 V clamping or automotive use | Select only for cost-sensitive 18 V regulation where qualification and power headroom are non-critical |
| BZX85C170 | 170 V Zener voltage, 1.3 W power rating, DO-41 package, not AEC-Q101 qualified | Lacks automotive qualification and higher 1500 mW dissipation capability; higher ZZT (1500 Ω) | Acceptable for industrial prototypes where AEC-Q101 is not mandated and thermal margin is sufficient |
Compared with Z4KE170A-E3/54, the 1N4746A-T serves entirely different voltage classes and lacks automotive compliance, while BZX85C170 matches nominal voltage but offers lower power handling and unqualified reliability-making Z4KE170A-E3/54 the sole option meeting AEC-Q101 and 1500 mW requirements at 170 V.
Availability
Z4KE170A-E3/54 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU voltage clamping, and renewable energy inverter monitoring requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for Z4KE170A-E3/54 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The Z4KE series is part of Vishay's high-voltage Zener diode product line designed specifically for robust overvoltage protection and precision regulation in automotive, industrial, and energy infrastructure systems.
FAQ
What is the Zener voltage tolerance of Z4KE170A-E3/54?
Z4KE170A-E3/54 has a Zener voltage range of 162 V to 179 V at 5 mA test current, corresponding to a ±5.3% tolerance around the nominal 170 V rating. This tolerance is guaranteed across the full operating temperature range and reflects manufacturing process control for consistent clamping behavior in production designs.
Is Z4KE170A-E3/54 qualified for automotive applications?
Yes, Z4KE170A-E3/54 is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "E3" (commercial grade) paired with HE3 variants for full automotive qualification. The device undergoes stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 standards.
What is the maximum power dissipation for Z4KE170A-E3/54?
Z4KE170A-E3/54 is rated for 1500 mW total power dissipation at a lead temperature (TL) of 75 °C with 9.5 mm lead length. Derating is required above 75 °C, following the published power derating curve in the Vishay datasheet Document Number 88408.
Does Z4KE170A-E3/54 have RoHS compliance documentation?
Yes, Z4KE170A-E3/54 carries the "E3" suffix indicating RoHS-compliance per EU Directive 2011/65/EU, with full material declarations available via Vishay's Material Category Policy document (www.vishay.com/doc?99912). Lead finish is matte tin, fully compliant with J-STD-002 solderability requirements.
What package type does Z4KE170A-E3/54 use?
Z4KE170A-E3/54 uses the DO-204AL (DO-41) axial-leaded package, featuring glass passivation, UL 94 V-0 rated plastic molding, and cathode identification via color band. Dimensions conform to standard DO-41 outlines with 0.034" (0.86 mm) lead diameter and 1.0" (25.4 mm) minimum body length.
Z4KE170A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 170 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 129.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 500 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
Z4KE170A-E3/54 FAQ
1.How can I place an order for Z4KE170A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for Z4KE170A-E3/54 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 Z4KE170A-E3/54 reliable?
The price and inventory of Z4KE170A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for Z4KE170A-E3/54 is usually 5 days.
3.What payment methods are accepted for Z4KE170A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for Z4KE170A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for Z4KE170A-E3/54?
Z4KE170A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your Z4KE170A-E3/54 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 Z4KE170A-E3/54?
For technical support, including Z4KE170A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your Z4KE170A-E3/54 requirements.
6.How does Aetrix verify that Z4KE170A-E3/54 is sourced from the original manufacturer or authorized distributors?
All Z4KE170A-E3/54 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 Z4KE170A-E3/54 meets industry standards.
7.What is the process for return or replacement of Z4KE170A-E3/54?
All Z4KE170A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with Z4KE170A-E3/54, 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 Z4KE170A-E3/54 part is unused and in its original packaging.
Return procedure for Z4KE170A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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