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Vishay General Semiconductor - Diodes Division 1.5KE22C-E3/73
- Part No.:
- 1.5KE22C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22C-E3/73.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,663
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Product details
Overview
1.5KE22C-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power 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), and clamps to ≤30.6 V at 49.0 A peak pulse current - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the 1.5KE22C-E3/73 datasheet, 1.5KE22C-E3/73 pinout, 1.5KE22C-E3/73 application, or 1.5KE22C-E3/73 equivalent, this page delivers verified electrical specs, package dimensions, real-world use cases, and validated alternative parts - all aligned with Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional clamping action across both polarities. Its 10/1000 µs waveform response enables sub-nanosecond transient suppression, and it maintains stable VBR with ±0.092 %/°C temperature coefficient.
Rated for -55 °C to +175 °C junction operation, it supports unidirectional or bidirectional configurations (CA suffix denotes bidirectional); 1.5KE22C-E3/73 is explicitly listed in the bidirectional range (6.8 V–220 V VBR) and carries E3 RoHS-compliant matte tin plating per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines reliable avalanche initiation threshold under reverse bias |
| VWM | 18.8 V - maximum working voltage before leakage exceeds 1 µA; sets safe operating margin below clamping |
| VC @ IPPM | 30.6 V at 49.0 A - clamped voltage during 1500 W transient; determines protected circuit's max stress level |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity without degradation; suitable for lightning-induced surges |
| IPPM | 49.0 A - peak pulse current capability; directly usable for PCB trace sizing and fuse coordination |
| TJ max. | +175 °C - high-temperature operation support for under-hood automotive or industrial enclosures |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enables effective heat dissipation through PCB copper |
Pinout & Package
1.5KE22C-E3/73 uses the industry-standard Case Style 1.5KE DO-201AD axial-leaded package: molded epoxy body, matte tin-plated leads (0.038–0.042" diameter), 0.375" lead length, UL 94 V-0 rated. Polarity marking omitted - bidirectional symmetry eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (reversible) | Bidirectional avalanche junction | Either lead serves as input/output; no polarity-dependent installation required |
| Lead 1 | Current path terminal | Connected to PCB trace or chassis ground; handles full IPPM surge current |
| Lead 2 | Current path terminal | Paired with Lead 1 to form symmetrical clamping path; equal surge current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over 1000+ surge events without parameter drift |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing without derating or parallel staging |
| Sub-ns response time | Clamps transients before IC damage thresholds are exceeded - critical for protecting 3.3 V/5 V logic inputs |
| AEC-Q101 qualified option available | HE3 variant (e.g., 1.5KE22CAHE3_B) meets automotive reliability requirements for engine control and ADAS sensors |
| RoHS-compliant E3 finish | Meets JESD 201 Class 1A whisker resistance; ensures long-term solder joint integrity in thermal cycling environments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground, responding within <1 ns to suppress >100 V transients. Use Value: Prevents latch-up or gate oxide rupture in downstream 5 V tolerant receivers by limiting voltage to ≤30.6 V during 49 A surges. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff voltage (18.8 V) allows normal 24 V operation while clamping 1 kV/0.5 A transients per IEC 61000-4-4. Use Value: Eliminates need for external series impedance or RC snubbers - direct placement at connector reduces board space and BOM count. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges on outdoor-facing RJ-45 or telephone ports. IC Role / Device Role / Timing Role: Primary surge shunt on differential pair; bidirectional symmetry matches AC-coupled signaling protocols. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W without degradation - validated per Telcordia GR-1089-CORE. |
Use Scenario: Secondary-side overvoltage protection on 12 V DC outputs of wall adapters, guarding connected USB peripherals and IoT devices. IC Role / Device Role / Timing Role: Fast-clamping element between VOUT and GND; activated only during fault conditions (e.g., regulator failure). Use Value: Limits fault voltage to 30.6 V - below MOSFET drain-source breakdown and USB 2.0 VBUS tolerance (5.25 V), preventing cascading failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | DO-214AA package; lower PPPM = 600 W; VC = 35.5 V @ 16.9 A | Compact surface-mount fit for space-constrained designs; not suited for 1500 W-level surges | Select SMBJ22CA when board area is limited and surge energy is ≤600 W (e.g., low-energy data lines). |
| 1.5SMC22CA | SMA package; same 1500 W rating; VC = 33.2 V @ 45.2 A; higher RθJA = 110 °C/W | Surface-mount alternative with identical power rating but reduced thermal performance vs. axial 1.5KE | Choose 1.5SMC22CA only if automated assembly mandates SMT; verify PCB copper area compensates for higher thermal resistance. |
Compared with 1.5KE22C-E3/73, SMBJ22CA trades surge robustness for footprint reduction, while 1.5SMC22CA retains power rating but requires greater thermal management - making 1.5KE22C-E3/73 optimal for high-reliability through-hole surge protection where lead thermal conduction matters.
Availability
1.5KE22C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1.5KE22C-E3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - emphasizing rugged packaging, stable avalanche behavior, and AEC-Q101 qualification readiness.
FAQ
What is the exact breakdown voltage range for 1.5KE22C-E3/73?
The 1.5KE22C-E3/73 has a guaranteed breakdown voltage (VBR) range of 20.9 V to 23.1 V at 1 mA test current, per Vishay Document #88301. This bidirectional specification applies identically in both directions and is measured at TA = 25 °C. The 1.5KE22C-E3/73 must exhibit VBR within this window to meet datasheet compliance.
Is 1.5KE22C-E3/73 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE22C-E3/73 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. No lead content is present in the terminations or molding compound of the 1.5KE22C-E3/73.
Does 1.5KE22C-E3/73 have AEC-Q101 qualification?
The base 1.5KE22C-E3/73 is commercial-grade and not AEC-Q101 qualified. However, the HE3 variant - specifically 1.5KE22CAHE3_B - is AEC-Q101 qualified and listed in Vishay's documentation for automotive applications. Engineers requiring automotive qualification must specify the HE3 version, not the E3/73.
What is the clamping voltage of 1.5KE22C-E3/73 at its rated peak pulse current?
At its rated peak pulse current of 49.0 A (10/1000 µs waveform), the 1.5KE22C-E3/73 clamps to a maximum of 30.6 V. This value is measured per standard test conditions in Vishay Document #88301 and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events.
Can 1.5KE22C-E3/73 be used in place of a unidirectional TVS like 1.5KE22A?
No - 1.5KE22C-E3/73 is strictly bidirectional (denoted by "C"), while 1.5KE22A is unidirectional. Substituting them requires circuit review: 1.5KE22C-E3/73 lacks polarity marking and clamps symmetrically, whereas 1.5KE22A has a cathode band and only clamps in reverse bias. Using 1.5KE22C-E3/73 in a unidirectional design may cause forward conduction faults.
1.5KE22C-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
1.5KE22C-E3/73 FAQ
1.How can I place an order for 1.5KE22C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22C-E3/73 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 1.5KE22C-E3/73 reliable?
The price and inventory of 1.5KE22C-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22C-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE22C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22C-E3/73?
1.5KE22C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22C-E3/73 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 1.5KE22C-E3/73?
For technical support, including 1.5KE22C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE22C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22C-E3/73 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 1.5KE22C-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE22C-E3/73?
All 1.5KE22C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22C-E3/73, 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 1.5KE22C-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE22C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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