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Vishay General Semiconductor - Diodes Division 1.5KE27C-E3/54
- Part No.:
- 1.5KE27C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27C-E3/54.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,993
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Product details
Overview
1.5KE27C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on signal/power lines. It features a 25.7 V to 28.4 V breakdown voltage (VBR) at 1 mA, 23.1 V standoff voltage (VWM), 37.5 V clamping voltage (VC) at 40.0 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and automotive control modules.
For engineers reviewing the 1.5KE27C-E3/54 datasheet, 1.5KE27C-E3/54 pinout, 1.5KE27C-E3/54 application, or 1.5KE27C-E3/54 equivalent, this device serves as a high-energy, sub-nanosecond-response overvoltage protector for ungrounded differential lines, DC bus rails, and bidirectional data paths where polarity-agnostic surge suppression is required.
Technical Context
This TVS diode operates in bidirectional mode with symmetrical avalanche characteristics in both polarities, enabling protection of AC-coupled or floating signal lines without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping under repetitive transients.
The device complies with JEDEC standard test conditions (10/1000 µs waveform, 0.01% duty cycle), delivers 37.5 V clamping at 40.0 A, and maintains operation across –55 °C to +175 °C junction temperature range - supporting under-hood automotive and industrial power supply inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche onset window for reliable triggering before downstream IC damage |
| VWM | 23.1 V - maximum continuous working voltage; ensures no leakage conduction during normal operation |
| VC @ IPPM | 37.5 V at 40.0 A - clamped voltage seen by protected circuit during worst-case 1500 W transient |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, enabling robust protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 40.0 A - peak pulse current capability directly determines survivability against 2 Ω source impedance surges |
| Junction Temp Range | –55 °C to +175 °C - supports placement near heat sources (e.g., power converters) without derating loss |
| Package | DO-201AD (Case Style 1.5KE) - industry-standard axial lead package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE27C-E3/54 uses a two-terminal DO-201AD (Case Style 1.5KE) axial package with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No cathode band; terminals interchangeable - enables drop-in use on AC lines or floating buses without orientation check |
| Lead 1 / Lead 2 | Current path into/out of junction | Low-inductance axial leads support <1 ns response; thermal resistance RθJL = 15.4 °C/W enables direct PCB trace heatsinking |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source) without degradation |
| Sub-nanosecond response time | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; suitable for high-reliability commercial and industrial assembly |
| UL 94 V-0 epoxy molding | Self-extinguishing encapsulation prevents flame propagation in fault conditions per safety-critical designs |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protection of 24 V CAN FD bus power rails and LIN transceivers against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between VBAT and ground, absorbing energy before it reaches power management ICs. Use Value: Clamps to 37.5 V at 40 A - keeps downstream PMIC input below absolute maximum rating during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding 4–20 mA current loop outputs in PLC analog I/O modules from field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS across loop terminals, conducting surge current away from precision DAC and op-amp output stages. Use Value: 23.1 V standoff allows full 20 mA loop compliance while 37.5 V clamping prevents op-amp rail-to-rail saturation during 8/20 µs ESD events. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Surge protection on POTS line interface circuits in VoIP gateways exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary protection device bridging tip/ring lines, operating symmetrically to suppress common-mode transients. Use Value: Bidirectional symmetry eliminates need for dual unidirectional devices; 1500 W rating meets GR-1089-CORE Level 3 requirements. |
Use Scenario: Input stage protection for BLDC motor driver ICs in smart washing machines subjected to relay contact bounce and brush arcing. IC Role / Device Role / Timing Role: Clamp placed across DC link capacitor terminals to absorb commutation spikes before they reach gate drivers. Use Value: 175 °C max junction temperature enables mounting near motor controller heatsinks without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | DO-214AA package; lower 600 W PPPM; 24 V VWM, 38.9 V VC @ 15.4 A | Surface-mount only; suited for space-constrained PCBs but lacks axial lead mechanical robustness | Select when board area is limited and surge energy does not exceed 600 W - not a direct replacement due to lower power rating and different package |
| 1.5KE27A-E3/54 | Unidirectional version; identical VBR/VC specs but cathode-banded; requires correct polarity placement | Applicable only on grounded DC rails where reverse polarity is impossible (e.g., +12 V supply to microcontroller) | Choose only if system topology guarantees fixed polarity - introduces layout dependency absent in 1.5KE27C-E3/54 |
Compared with SMBJ24CA and 1.5KE27A-E3/54, the 1.5KE27C-E3/54 uniquely combines axial-mount ruggedness, 1500 W surge capacity, and polarity-agnostic operation - making it optimal for high-energy, floating-line protection where mechanical reliability and installation flexibility are prioritized over footprint size.
Availability
1.5KE27C-E3/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor signal conditioning, telecom line interface, and consumer appliance motor control requiring stable component supply and long-lifecycle availability.
Supply support for 1.5KE27C-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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for industrial, automotive, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting applications where failure modes include lightning, inductive switching, and load dump, with emphasis on consistency, thermal resilience, and JEDEC-compliant testing.
FAQ
What is the clamping voltage of the 1.5KE27C-E3/54 under maximum surge conditions?
The 1.5KE27C-E3/54 clamps to 37.5 V at its rated peak pulse current of 40.0 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the maximum voltage imposed on the protected circuit during a 1500 W transient event. The clamping performance remains stable across its –55 °C to +175 °C operating range, with no significant drift in VC due to temperature variation.
Is the 1.5KE27C-E3/54 suitable for automotive applications requiring AEC-Q101 qualification?
No, the 1.5KE27C-E3/54 is not AEC-Q101 qualified. Per Vishay documentation, AEC-Q101 qualification applies only to part numbers with the HE3 suffix (e.g., 1.5KE27CHE3_B), not the E3/54 variant. The 1.5KE27C-E3/54 is commercial-grade and intended for industrial, telecom, and consumer applications where automotive-grade stress testing is not mandated.
How does the bidirectional design of the 1.5KE27C-E3/54 affect its placement on a PCB?
The 1.5KE27C-E3/54 has no polarity marking and functions identically in either orientation, allowing unrestricted placement across differential or floating nodes - such as tip/ring lines in telecom interfaces or AC-coupled sensor outputs. This eliminates orientation verification during assembly and avoids misplacement risk that could occur with unidirectional variants like 1.5KE27A-E3/54.
What is the thermal resistance from junction to lead (RθJL) for the 1.5KE27C-E3/54, and why does it matter?
The 1.5KE27C-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. This low value enables efficient heat transfer from the silicon junction directly into PCB copper traces or heatsink-mounted leads, critical for sustaining repetitive surge events. It supports higher duty-cycle operation compared to devices with higher RθJL, especially in compact layouts where ambient airflow is limited.
Can the 1.5KE27C-E3/54 be used in parallel to increase surge current handling?
Yes, multiple 1.5KE27C-E3/54 devices can be paralleled to increase total peak pulse current capacity, provided matched units are used and PCB layout ensures equal current sharing (e.g., symmetrical trace lengths, shared thermal plane). Vishay explicitly states TVS diodes in this family may be used in parallel to scale peak power ratings - though derating by 10–15% per additional unit is recommended to account for VBR tolerance mismatch.
1.5KE27C-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 38.4A
- 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
1.5KE27C-E3/54 FAQ
1.How can I place an order for 1.5KE27C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27C-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 1.5KE27C-E3/54 reliable?
The price and inventory of 1.5KE27C-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 1.5KE27C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE27C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27C-E3/54?
1.5KE27C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27C-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 1.5KE27C-E3/54?
For technical support, including 1.5KE27C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE27C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE27C-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 1.5KE27C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE27C-E3/54?
All 1.5KE27C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27C-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 1.5KE27C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE27C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27C-E3/54 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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