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Vishay General Semiconductor - Diodes Division 1.5KE22-E3/54
- Part No.:
- 1.5KE22-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22-E3/54.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,891
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Product details
Overview
1.5KE22-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 30.6 V at 49 A, and operates across –55 °C to +175 °C junction temperature. It is used in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE22-E3/54 datasheet, 1.5KE22-E3/54 pinout, 1.5KE22-E3/54 application, or 1.5KE22-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, bidirectional/unidirectional polarity context, and real-world ESD/lightning surge protection use cases - all confirmed from Vishay's official 88301 document (Rev. 09-Aug-2022).
Technical Context
The 1.5KE22-E3/54 employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional configuration uses a cathode-band marking and delivers stable clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
It complies with JEDEC standards for transient suppressors and supports soldering per J-STD-002 and JESD 22-B102. The device is RoHS-compliant (E3 suffix), meets UL 94 V-0 flammability, and passes JESD 201 Class 1A whisker testing - but is not AEC-Q101 qualified (only HE3 variants are).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise voltage threshold where clamping begins |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 30.6 V at 49 A - clamped voltage during full 1500 W transient, critical for downstream IC survival |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning/inductive spikes |
| IFSM | 200 A (8.3 ms half-sine) - forward surge rating confirming robustness against accidental polarity reversal |
| TJ max | +175 °C - enables operation in under-hood automotive or high-temperature industrial enclosures |
| RθJA | 75 °C/W - thermal resistance indicating need for adequate PCB copper pour or heatsinking at >1 W steady-state dissipation |
Pinout & Package
1.5KE22-E3/54 uses the standard axial-leaded JEDEC Case Style 1.5KE package: molded epoxy body, matte tin-plated leads, 0.375" (9.5 mm) lead length, and cathode band marking for unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line ground or low-side reference; must handle full IPPM surge current |
| Cathode | Clamping node / high-voltage reference | Marked with color band; tied to rail being protected (e.g., 24 V input); absorbs transient energy into ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when properly mounted |
| Sub-nanosecond response time | Clamps transients before sensitive ICs (e.g., microcontrollers, CAN transceivers) experience overstress |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance - suitable for high-reliability industrial assembly |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed power supplies and control cabinets |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role: Primary clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤30.6 V, preventing damage to 36 V-rated input stages while surviving 1500 W pulses. |
Use Scenario: Shielding 4–20 mA analog sensor outputs from ESD (IEC 61000-4-2) and field wiring inductive kick. IC Role / Device Role: Unidirectional TVS connected anode-to-ground, cathode-to-signal line. Use Value: Clamps ±15 kV contact ESD events to <35 V within 1 ns, preserving ADC accuracy and isolator integrity. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on outdoor Ethernet runs. IC Role / Device Role: Paired with common-mode chokes on PSE side; suppresses differential-mode transients on DC bias lines. Use Value: Withstands 10/1000 µs surges up to 1500 W without parametric shift - critical for field-deployed reliability. |
Use Scenario: Protecting BLDC motor driver power inputs from back-EMF spikes during commutation in washing machines or HVAC fans. IC Role / Device Role: Mounted across DC bus (cathode to +VDC, anode to GND) near gate drivers. Use Value: Absorbs repetitive 200 A inductive spikes (per IFSM) while maintaining VC < 31 V - avoids MOSFET avalanche stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC (35.5 V @ 17.1 A) | Better suited for space-constrained PCBs; insufficient for 1500 W lightning surges | Select when board area is limited and surge threat level is IEC 61000-4-5 Level 2 (2 kV) |
| 1.5KE22AHE3_B | Identical electrical specs, but AEC-Q101 qualified and HE3 whisker-tested (Class 2) | Required for automotive OEM production; not needed for industrial/commercial use | Choose only if automotive qualification and extended whisker resistance are mandatory |
Compared with 1.5KE22-E3/54, SMBJ22A trades surge capacity for compactness, while 1.5KE22AHE3_B adds automotive qualification at no electrical performance gain - making 1.5KE22-E3/54 the optimal cost-performance choice for commercial/industrial 1500 W protection.
Availability
1.5KE22-E3/54 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor guarding, telecom DC feed hardening, and consumer appliance motor drive inputs requiring stable component supply and traceable sourcing.
Supply support for 1.5KE22-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability passive protection components.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where 1500 W surge immunity and wide temperature operation are essential.
FAQ
What is the breakdown voltage tolerance for 1.5KE22-E3/54?
The 1.5KE22-E3/54 has a guaranteed breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, corresponding to a ±5% tolerance around the nominal 22 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 24 V systems without premature conduction.
Is 1.5KE22-E3/54 suitable for bidirectional transient suppression?
No - 1.5KE22-E3/54 is a unidirectional TVS diode, identified by its cathode band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., 1.5KE22CA). Using 1.5KE22-E3/54 in AC or floating applications risks forward conduction and failure; always verify polarity alignment in circuit design.
What does the "E3/54" suffix mean in 1.5KE22-E3/54?
The "E3" denotes RoHS compliance and JESD 201 Class 1A whisker resistance; "54" is Vishay's preferred package code indicating 13-inch paper tape and reel packaging with 1400 units per reel. This ordering code ensures correct logistics handling and confirms commercial-grade (non-AEC-Q101) qualification for 1.5KE22-E3/54.
How does 1.5KE22-E3/54 perform under repeated surge stress?
1.5KE22-E3/54 is rated for repetitive 10/1000 µs surges at 0.01% duty cycle - meaning it can sustain one 1500 W pulse per 10,000 µs without thermal runaway. Derating curves (Fig. 2 in Vishay Doc 88301) show 50% power reduction at TJ = 100 °C, so PCB layout must include ≥1 cm² copper pour for sustained multi-pulse operation.
Can 1.5KE22-E3/54 replace older 1N6279A devices?
Yes - 1.5KE22-E3/54 is the direct commercial-grade replacement for 1N6279A, sharing identical electrical characteristics (VBR, VC, PPPM), package dimensions, and JEDEC registration. Both are listed in the same Vishay datasheet (88301) as functionally equivalent, with 1.5KE22-E3/54 offering updated RoHS compliance and tape-and-reel packaging.
1.5KE22-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 47A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE22-E3/54 FAQ
1.How can I place an order for 1.5KE22-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22-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 1.5KE22-E3/54 reliable?
The price and inventory of 1.5KE22-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 1.5KE22-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE22-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22-E3/54?
1.5KE22-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22-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 1.5KE22-E3/54?
For technical support, including 1.5KE22-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22-E3/54 requirements.
6.How does Aetrix verify that 1.5KE22-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22-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 1.5KE22-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE22-E3/54?
All 1.5KE22-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22-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 1.5KE22-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE22-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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