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Vishay General Semiconductor - Diodes Division 1.5KE30CAHE3_B/C
- Part No.:
- 1.5KE30CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CAHE3_B/C.pdf
- Description:
- 1.5KW,30V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,156
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Product details
Overview
1.5KE30CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 41.4 V at 36.2 A, 1.5KE case package, and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE30CAHE3_B/C datasheet, 1.5KE30CAHE3_B/C pinout, 1.5KE30CAHE3_B/C application, or 1.5KE30CAHE3_B/C equivalent, this page delivers verified electrical parameters, polarity confirmation, thermal resistance (RθJA = 75 °C/W), RoHS-compliant HE3 suffix marking, and bidirectional clamping behavior per JEDEC 1.5KE standard.
Technical Context
This TVS operates as a voltage-clamped shunt protector with symmetrical avalanche conduction in both directions - critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable VBR tolerance (±5 %), low incremental surge resistance, and sub-nanosecond response time (<1 ns), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
Designed for unclamped operation above VWM = 25.6 V and full clamping below VC = 41.4 V at rated IPPM, it sustains repetitive 10/1000 µs pulses at 0.01 % duty cycle. Thermal performance is defined by RθJL = 15.4 °C/W (junction-to-lead), supporting lead-soldered PCB mounting without heatsinking under transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 41.4 V at 36.2 A - actual clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity without failure |
| Junction temp. range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD outline, 0.375" lead length, UL 94 V-0 molded epoxy |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
1.5KE30CAHE3_B/C uses a two-terminal axial-leaded DO-201AD package (Case Style 1.5KE) with no polarity marking - consistent with bidirectional function. Leads are matte tin-plated, solderable per J-STD-002, and rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional avalanche junction | Identical conduction in both directions; no cathode band - installed without orientation constraint |
| Lead 1 / Lead 2 | Current path terminals | Leads serve as mechanical attachment and thermal conduction path; RθJL = 15.4 °C/W enables direct PCB heat sinking |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| 1500 W peak pulse rating | Handles high-energy transients from load dump or lightning surges without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Sub-nanosecond response | Clamps within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| RoHS-compliant HE3 marking | Indicates compliance with JESD 201 Class 2 whisker resistance and full RoHS material restrictions |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 load dump and ESD events. IC Role / Device Role: Bidirectional shunt clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤41.4 V while sustaining 36.2 A peak current - preventing latch-up or gate oxide rupture in protected ICs. | Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring transients and relay coil flyback. IC Role / Device Role: Primary overvoltage clamp on channel-level inputs, mounted directly at terminal block entry points. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W without derating - extends system uptime in harsh factory environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on Ethernet PHY power rails and data line terminations in PoE-powered devices. IC Role / Device Role: Bidirectional clamp between VDD and GND on isolated DC/DC outputs to suppress coupled transients. Use Value: Low clamping ratio (VC/VBR ≈ 1.4) minimizes voltage overshoot during fast-rising surges, preserving regulator stability. | Use Scenario: Input-stage transient suppression on AC-DC adapter primary-side rectifier outputs and secondary-side 5/12 V rails. IC Role / Device Role: Standoff-rated shunt device placed after bulk capacitor to absorb residual switching spikes and external surges. Use Value: 25.6 V VWM allows reliable operation across universal input ranges while clamping to 41.4 V - compatible with 36 V-rated MOSFETs and controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | 600 W rating, SMC package, lower VC = 53.3 V at 11.8 A, same VBR range (31.4–34.7 V) | Lower power handling; suited for space-constrained PCBs where 1500 W margin is not required | Select when board area is limited and peak surge energy remains ≤600 W |
| 1.5KE33CA | Higher VBR (31.4–34.7 V), identical 1500 W rating and 1.5KE package, VC = 45.7 V at 32.8 A | Marginally higher clamping voltage; used where system tolerates >41.4 V transient excursion | Choose for designs requiring tighter VBR tolerance or compatibility with legacy 33 V rail systems |
Compared with 1.5KE30CAHE3_B/C, SMBJ33CA trades power capability for compactness, while 1.5KE33CA maintains full 1500 W performance with adjusted voltage thresholds - both require layout review due to differing thermal and surge-current profiles.
Availability
1.5KE30CAHE3_B/C is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, AEC-Q101 validation, and repeatable 1500 W transient suppression.
Supply support for 1.5KE30CAHE3_B/C 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering standardized 1500 W surge capability in a ruggedized axial package with AEC-Q101 and RoHS compliance.
FAQ
What is the breakdown voltage tolerance for 1.5KE30CAHE3_B/C?
The 1.5KE30CAHE3_B/C has a specified breakdown voltage range of 28.5 V to 31.5 V at 1 mA test current, representing a ±5 % tolerance around the nominal 30 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 24 V and 3.3 V/5 V logic interfaces. The value is measured per JEDEC standards and confirmed in Vishay's 88301 datasheet revision 09-Aug-2022.
Is 1.5KE30CAHE3_B/C suitable for automotive applications?
Yes, 1.5KE30CAHE3_B/C is AEC-Q101 qualified (as indicated by the HE3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. It meets stress tests for temperature cycling, high-temperature reverse bias, and unbiased high-temperature operating life. The device is explicitly listed in Vishay's AEC-Q101 qualified product table for 1.5KE6.8CAHE3_B through 1.5KE220CAHE3_B variants, confirming its qualification scope.
How does the bidirectional nature of 1.5KE30CAHE3_B/C affect PCB layout?
The bidirectional design of 1.5KE30CAHE3_B/C eliminates polarity constraints - no cathode marking is present, and either lead may connect to any node in the protected circuit. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or floating grounds. However, thermal relief and lead length must still follow DO-201AD mechanical guidelines (0.375" minimum lead length) to maintain RθJL = 15.4 °C/W and avoid solder joint stress during reflow.
What is the maximum clamping voltage of 1.5KE30CAHE3_B/C under surge conditions?
The maximum clamping voltage (VC) of 1.5KE30CAHE3_B/C is 41.4 V at 36.2 A peak pulse current (IPPM), tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case transient events. It is derived directly from the device's avalanche characteristics and is guaranteed across the –55 °C to +175 °C junction temperature range per Vishay Document Number 88301.
Does 1.5KE30CAHE3_B/C have RoHS and lead-free compliance?
Yes, the HE3 suffix in 1.5KE30CAHE3_B/C denotes full RoHS compliance and lead-free construction, including matte tin-plated leads meeting J-STD-002 solderability requirements. It also satisfies JESD 201 Class 2 whisker resistance testing. The "B/C" in the part number indicates tape-and-reel packaging (1400 units per 13" reel), with no brominated flame retardants - confirmed in Vishay's material categorization document 99912.
1.5KE30CAHE3_B/C 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 38A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE30CAHE3_B/C FAQ
1.How can I place an order for 1.5KE30CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CAHE3_B/C 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 1.5KE30CAHE3_B/C reliable?
The price and inventory of 1.5KE30CAHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE30CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CAHE3_B/C?
1.5KE30CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CAHE3_B/C 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 1.5KE30CAHE3_B/C?
For technical support, including 1.5KE30CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE30CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CAHE3_B/C 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 1.5KE30CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE30CAHE3_B/C?
All 1.5KE30CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CAHE3_B/C, 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 1.5KE30CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE30CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CAHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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