My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE22CA/54
- Part No.:
- 1.5KE22CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CA/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE22CA from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 30.6 V at 49.0 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE22CA datasheet, 1.5KE22CA pinout, 1.5KE22CA application, or 1.5KE22CA equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal derating curves, JEDEC 1.5KE package details, and AEC-Q101-qualified alternatives - all critical for automotive ECU, industrial I/O, and telecom surge protection design.
Technical Context
The 1.5KE22CA uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal paths where reverse polarity events are possible.
It complies with ANSI/IEEE C62.35 surge standards and supports repetitive 10/1000 µs waveform testing at 0.01% duty cycle. Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation under pulsed stress when mounted on standard PCB copper land patterns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA - ensures precise turn-on threshold before downstream component damage |
| VWM | 18.8 V - maximum continuous working voltage; defines safe operating margin below breakdown |
| VC @ IPPM | 30.6 V at 49.0 A - clamping voltage during 1500 W transient; limits stress on protected circuitry |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity for lightning and load-switching events |
| IPPM | 49.0 A - peak pulse current capability directly tied to system-level surge test compliance (e.g., ISO 7637-2) |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without derating loss |
| Leakage @ VWM | 1.0 µA - ultra-low standby current preserves signal integrity and battery life in always-on systems |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × lead length), UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Not marked; bidirectional symmetry means either lead serves as anode or cathode depending on transient polarity |
| Cathode | Current exit point in forward bias | No color band or marking - distinguishes it from unidirectional 1.5KE22A which uses cathode band |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4 kV line-to-earth) with appropriate series impedance |
| Bidirectional clamping | Eliminates need for polarity-aware placement; simplifies layout for differential or AC-coupled interfaces |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TCT, HAST) |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes let-through energy during surge, reducing risk of latch-up or gate oxide failure in protected MOSFETs |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in engine control units (ECUs) and body control modules (BCMs) from load dump and jump-start transients. IC Role / Device Role: Primary clamping device placed at board-level input filter stage, upstream of DC/DC converters and LDOs. Use Value: Limits transient voltage to ≤30.6 V during 49 A pulses, preventing overvoltage shutdown or permanent damage to 36 V-rated regulators. | Use Scenario: Safeguarding analog inputs of 4–20 mA current-loop sensors exposed to field wiring surges in factory automation. IC Role / Device Role: Bidirectional shunt protector across sensor input terminals, absorbing induced lightning energy from long cable runs. Use Value: Clamps ±30.6 V within nanoseconds, preserving ADC reference stability and avoiding input-stage saturation or ESD latch-up. |
| Telecom Line Card Surge Protection | Consumer USB Port ESD/Transient Suppression |
Use Scenario: Front-end protection for DSL or Ethernet PHY interfaces subjected to longitudinal surges per ITU-T K.20/K.21. IC Role / Device Role: Secondary surge limiter after gas discharge tube (GDT), providing low-clamp backup for fast-rising transients. Use Value: Delivers sub-31 V clamping at 49 A, ensuring PHY ICs (e.g., DP83848) remain within absolute maximum ratings during combined-mode surges. | Use Scenario: Overvoltage safeguard for VBUS and D+/D− lines in USB 2.0 host ports exposed to accidental 12 V adapter misconnection or ESD. IC Role / Device Role: Low-capacitance TVS array alternative - used discretely per line due to 1.5KE22CA's 30 pF typical junction capacitance. Use Value: Blocks >18.8 V faults while adding <0.5 pF parasitic capacitance to signal path, maintaining USB eye diagram integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Lower PPPM (600 W), smaller SMB package (3.6 mm × 2.5 mm), higher VC/VBR ratio (1.43) | Better suited for space-constrained consumer PCBs; less robust for automotive load dump | Select SMBJ22CA only when board area is critical and peak surge energy is ≤600 W |
| 1.5SMC22CA | Same PPPM (1500 W), SMC package (7.1 mm × 6.2 mm), slightly higher VC (31.1 V), identical VBR range | Higher thermal mass improves sustained surge handling; requires larger footprint than DO-201AD | Choose 1.5SMC22CA for high-reliability industrial designs needing enhanced thermal endurance |
Compared with 1.5KE22CA, SMBJ22CA trades surge robustness for compactness, while 1.5SMC22CA offers identical power rating in a thermally superior but larger package - enabling selection based on mechanical constraints versus thermal margin requirements.
Availability
1.5KE22CA is available at Aetrix Electronics and suitable for automotive ECUs, industrial I/O modules, and telecom line cards requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1.5KE22CA 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, and protection devices with emphasis on reliability, ruggedness, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and infrastructure applications where failure modes must be mitigated without compromising signal fidelity.
FAQ
What is the breakdown voltage tolerance of the 1.5KE22CA?
The 1.5KE22CA has a specified breakdown voltage range of 20.9 V to 23.1 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 22 V rating. This tight tolerance ensures consistent clamping onset across production lots and supports predictable system-level surge margin calculations in designs compliant with ISO 16750-2 or IEC 61000-4-5.
Is the 1.5KE22CA suitable for automotive applications?
Yes, the 1.5KE22CA is AEC-Q101 qualified when ordered with the HE3 suffix (e.g., 1.5KE22CAHE3_B), confirming validation for automotive powertrain and chassis systems. Its –55 °C to +175 °C operating range, glass-passivated junction, and 1500 W surge capability meet stringent requirements for engine control, lighting, and ADAS subsystems - provided the specific part number variant carries AEC-Q101 certification.
How does the 1.5KE22CA differ from the unidirectional 1.5KE22A?
The 1.5KE22CA is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas the 1.5KE22A is unidirectional with a visible cathode band and forward voltage drop (VF = 3.5 V at 100 A). The 1.5KE22CA is used where AC signals or polarity-agnostic protection is needed; the 1.5KE22A suits DC rail protection with defined polarity and lower forward conduction loss.
What is the maximum clamping voltage of the 1.5KE22CA during a surge event?
The maximum clamping voltage (VC) of the 1.5KE22CA is 30.6 V at peak pulse current IPPM = 49.0 A under a 10/1000 µs waveform. This value represents the upper limit of voltage imposed on protected circuitry during worst-case transient conditions and is critical for verifying that downstream components (e.g., 3.3 V or 5 V logic ICs) remain within their absolute maximum ratings.
Does the 1.5KE22CA require a heatsink for normal operation?
No, the 1.5KE22CA does not require an external heatsink for transient suppression duty, as its 1500 W rating applies to non-repetitive 10/1000 µs pulses at ≤0.01% duty cycle. However, its steady-state power dissipation is limited to 6.5 W at TL = 75 °C, so continuous DC leakage or frequent surges demand adequate PCB copper area (≥1 in²) to maintain junction temperature below 175 °C.
1.5KE22CA/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1.5KE22CA/54 FAQ
1.How can I place an order for 1.5KE22CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CA/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 1.5KE22CA/54 reliable?
The price and inventory of 1.5KE22CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE22CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CA/54?
1.5KE22CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CA/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 1.5KE22CA/54?
For technical support, including 1.5KE22CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CA/54 requirements.
6.How does Aetrix verify that 1.5KE22CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CA/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 1.5KE22CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE22CA/54?
All 1.5KE22CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CA/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 1.5KE22CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE22CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CA/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
