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Vishay General Semiconductor - Diodes Division 1.5KE36CA/54
- Part No.:
- 1.5KE36CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36CA/54.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,985
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Product details
Overview
1.5KE36CA/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V maximum standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive systems.
For engineers reviewing the 1.5KE36CA/54 datasheet, 1.5KE36CA/54 pinout, 1.5KE36CA/54 application, or 1.5KE36CA/54 equivalent, this part serves as a standardized, AEC-Q101-qualified (HE3 variants) bidirectional TVS in the industry-standard 1.5KE package - critical for ESD and surge immunity validation in DC power rails, CAN bus protection, and automotive body control modules where fast clamping (<1 ns), low incremental surge resistance, and repeatable 1500 W pulse handling are required.
Technical Context
The 1.5KE36CA/54 operates as a bidirectional silicon avalanche diode, leveraging glass-passivated junction technology to deliver symmetrical clamping in both polarities without polarity marking. Its 10/1000 µs pulse response enables effective suppression of lightning surges (IEC 61000-4-5 Level 4) and load-dump transients while maintaining stable VBR temperature coefficient (0.099 %/°C) and low leakage (<1 µA at VWM).
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15.4 °C/W, supporting operation from –55 °C to +175 °C junction temperature. The device is rated for 200 A non-repetitive forward surge (unidirectional only) and delivers consistent clamping performance across its specified pulse width range, with no derating required below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 30.8 V - maximum continuous working voltage before leakage exceeds 1 µA, ensuring safe operation under nominal DC bias |
| VC @ IPPM | 49.9 V at 30.1 A - clamped voltage during 1500 W transient, limiting downstream component stress to safe levels |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, enabling robust lightning surge protection |
| Junction Temp Range | –55 °C to +175 °C - supports under-hood automotive and industrial environments without thermal derating loss |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 compliant epoxy body |
| Leakage Current | <1 µA at VWM - minimizes standby power loss and avoids false triggering in low-power sensor circuits |
Pinout & Package
1.5KE36CA/54 uses the standard DO-201AD axial-leaded package (Case Style 1.5KE), with no polarity marking due to bidirectional construction. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 1A whisker test (E3 suffix) or Class 2 (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between leads; either terminal may connect to line or ground in AC-coupled or floating applications |
| Lead 1 | Current path entry/exit | Carries full transient current during clamping; requires ≥0.375" (9.5 mm) lead length for thermal dissipation per spec |
| Lead 2 | Current path entry/exit | Electrically identical to Lead 1; symmetric conduction enables placement flexibility on PCB without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V systems |
| Clamping time <1 ns | Prevents voltage overshoot from damaging fast-switching MOSFETs and microcontrollers during ESD or inductive kick events |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| AEC-Q101 qualification (HE3 variants) | Validates reliability for automotive powertrain and chassis applications requiring zero defect rates over 15-year service life |
| UL 94 V-0 molded epoxy case | Meets flammability safety requirements for enclosed industrial enclosures and EV battery management systems |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input rail to shunt surge energy to ground before reaching LDOs or MCU power pins. Use Value: Limits rail voltage to ≤49.9 V during 1500 W transients, preventing brownout resets and gate oxide damage in automotive-grade microcontrollers. |
Use Scenario: Shielding 4–20 mA current loop transmitters and analog sensor outputs from ESD and field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) TVS placed differential-mode across signal pair to clamp common-mode transients without distorting low-frequency analog signals. Use Value: Maintains signal integrity below 1 kHz while suppressing ±8 kV contact ESD (IEC 61000-4-2) and induced lightning surges up to 10/1000 µs. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Safeguarding PoE-powered devices and remote DSLAM line cards against induced surges on -48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary surge suppressor mounted at board edge, coordinated with upstream GDTs to handle multi-kA threats per IEC 61643-21. Use Value: Delivers 1500 W pulse handling with <1 ns response, reducing need for cascaded protection stages and minimizing BOM count. |
Use Scenario: Protecting BLDC motor driver ICs and gate drivers from inductive kickback during PWM commutation in washing machines and HVAC fans. IC Role / Device Role / Timing Role: Snubber-connected TVS across half-bridge supply rails to clamp flyback voltage spikes exceeding 36 V. Use Value: Prevents destructive overvoltage on 600 V-rated gate drivers by clamping transients to 49.9 V within nanoseconds, extending FET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC (58.1 V @ 10.3 A) | Preferred for space-constrained PCBs with lower surge threat profiles (e.g., USB-C PD ports) | Select when board area is limited and 600 W pulse rating suffices; not suitable for ISO 7637-2 Pulse 5a compliance. |
| 1.5SMC36CA | Same PPPM (1500 W), SMC package (surface-mount), identical VBR/VC, but higher thermal resistance (RθJA ≈ 100 °C/W) | Used where automated assembly and reflow compatibility are mandatory, e.g., telecom base station boards | Choose for SMT production lines; verify thermal pad layout meets 1500 W pulse dissipation without local overheating. |
Compared with 1.5KE36CA/54, SMBJ36CA trades pulse power and thermal robustness for compactness, while 1.5SMC36CA matches power rating but demands stricter PCB thermal design - making 1.5KE36CA/54 optimal for through-hole, high-reliability, high-surge applications where lead-based heat sinking is leveraged.
Availability
1.5KE36CA/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom DC power feeds requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1.5KE36CA/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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting compliance with ISO 7637-2, IEC 61000-4-5, and AEC-Q101 standards across automotive, industrial, and infrastructure markets.
FAQ
What is the exact breakdown voltage range for 1.5KE36CA/54?
The 1.5KE36CA/54 has a guaranteed breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1 mA test current, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, directly supporting design margin calculations for 36 V nominal systems. The 1.5KE36CA/54 maintains this specification under all operating conditions defined in Vishay Document 88301.
Is 1.5KE36CA/54 suitable for automotive applications?
Yes - the 1.5KE36CA/54 is qualified to AEC-Q101 when ordered with HE3 suffix (e.g., 1.5KE36CAHE3_B), validating its reliability for automotive powertrain and body electronics. Even the commercial-grade 1.5KE36CA/54 operates from –55 °C to +175 °C and withstands ISO 7637-2 Pulse 5a load dump transients when properly mounted. Its 1500 W rating and 49.9 V clamping make 1.5KE36CA/54 a proven choice for 12 V/24 V vehicle subsystems.
How does the bidirectional nature of 1.5KE36CA/54 affect PCB layout?
The 1.5KE36CA/54 has no polarity marking and conducts identically in both directions, eliminating orientation constraints during placement. Engineers can mount it across any two nodes requiring symmetrical overvoltage protection - such as AC signal lines, differential buses (CAN, RS-485), or ungrounded DC rails. This simplifies layout, reduces assembly errors, and avoids reverse-bias failure modes inherent in unidirectional TVS devices.
What is the clamping voltage of 1.5KE36CA/54 at its rated peak pulse current?
The 1.5KE36CA/54 clamps to a maximum of 49.9 V at its rated peak pulse current of 30.1 A (10/1000 µs waveform), as specified in Vishay Document 88301. This value represents worst-case voltage seen by downstream circuitry during a full 1500 W transient event, enabling accurate selection of protected ICs' absolute maximum ratings. The 1.5KE36CA/54 achieves this with sub-nanosecond response, minimizing voltage overshoot.
Can 1.5KE36CA/54 be used in parallel for higher surge capacity?
Yes - multiple 1.5KE36CA/54 devices can be paralleled to increase total peak pulse power handling, provided matched VBR units are selected and PCB layout ensures equal current sharing (e.g., symmetrical trace lengths, shared thermal plane). Vishay confirms this configuration in Application Note AN999, noting that parallel operation maintains the same 49.9 V clamping level while scaling IPPM linearly. Derating guidelines apply per Fig. 2 in Document 88301.
1.5KE36CA/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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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
1.5KE36CA/54 FAQ
1.How can I place an order for 1.5KE36CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36CA/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 1.5KE36CA/54 reliable?
The price and inventory of 1.5KE36CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE36CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36CA/54?
1.5KE36CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36CA/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 1.5KE36CA/54?
For technical support, including 1.5KE36CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36CA/54 requirements.
6.How does Aetrix verify that 1.5KE36CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36CA/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 1.5KE36CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE36CA/54?
All 1.5KE36CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36CA/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 1.5KE36CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE36CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36CA/54 Tags
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