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Vishay General Semiconductor - Diodes Division 1.5KE27CHE3/54
- Part No.:
- 1.5KE27CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27CHE3/54.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,435
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Product details
Overview
1.5KE27CHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 27 V breakdown voltage (VBR min/max = 25.7–28.4 V at 1.0 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 safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE27CHE3/54 datasheet, 1.5KE27CHE3/54 pinout, 1.5KE27CHE3/54 application, or 1.5KE27CHE3/54 equivalent, this device delivers verified transient suppression performance for automotive power supply inputs, industrial PLC I/O protection, and telecom line interface circuits where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.39), and AEC-Q101 qualification (HE3 suffix) are required.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at VWM), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
It uses a DO-201AD package with axial leads, rated for 175 °C maximum junction temperature and 200 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance is 15.4 °C/W (junction-to-lead), enabling effective heat dissipation during transient events without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines precise voltage threshold at which clamping initiates; critical for matching system overvoltage tolerance margins. |
| VWM | 23.1 V - maximum continuous reverse operating voltage; must exceed nominal rail voltage (e.g., 24 V DC systems) to prevent leakage conduction. |
| VC @ IPPM | 37.5 V at 40.0 A - clamped voltage seen by protected circuit during full-rated surge; determines residual stress on downstream ICs. |
| PPPM | 1500 W (10/1000 µs) - peak transient energy handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 200 A (8.3 ms half-sine) - surge current capability for short-duration overloads; supports protection of high-current power stages. |
| TJ max | +175 °C - extended thermal operating range suitable for under-hood automotive and industrial environments. |
| Leakage ID | <1.0 µA at VWM - negligible standby power loss and no interference with high-impedance sensing circuits. |
Pinout & Package
Package: DO-201AD (axial lead, molded epoxy case per JEDEC TO-201AD); RoHS-compliant matte tin-plated leads; meets UL 94 V-0 flammability rating. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path in unidirectional clamp configuration. |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 24 V rail); color band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage, and long-term reliability under thermal cycling. |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity compliant with IEC 61000-4-5 Ed. 3 (4 kV line-to-ground, 2 kV line-to-line). |
| Clamping voltage ≤37.5 V at 40 A | Limits voltage overshoot to safe levels for 3.3 V/5 V/24 V logic and power ICs during transient events. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Fast response time <1 ns | Activates before sensitive semiconductor junctions experience destructive overvoltage - faster than MOVs or GDTs. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start transients. IC Role / Device Role: Primary shunt clamp placed between power rail and chassis ground to limit voltage excursion to ≤37.5 V. Use Value: Prevents gate oxide rupture in power MOSFETs and latch-up in microcontrollers during 120 V/500 ms load dump events. |
Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role: Unidirectional TVS connected across input terminals to suppress ESD (IEC 61000-4-2) and inductive kickback from solenoid drivers. Use Value: Maintains signal integrity while limiting transient-induced false triggering or port damage in DIN-rail mounted controllers. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: RS-485/RS-232 ports in base stations or network switches subjected to lightning-induced surges on long cable runs. IC Role / Device Role: Rail-to-rail clamping device placed ahead of transceiver ICs to absorb common-mode surges up to 1500 W. Use Value: Enables compliance with Telcordia GR-1089-CORE Zone 3 requirements without adding series impedance or signal distortion. |
Use Scenario: Brushed DC motor control in washing machines or HVAC blowers generating >100 V inductive spikes during commutation. IC Role / Device Role: Unidirectional TVS across motor terminals to clamp back-EMF and protect H-bridge MOSFETs. Use Value: Eliminates need for freewheeling diodes in cost-sensitive designs while maintaining <100 ns response and 200 A surge tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 38.9 V @ 15.4 A | Better suited for space-constrained PCBs; insufficient for IEC 61000-4-5 Level 4; requires layout review for thermal relief. | Select when board area is limited and surge threat level is ≤1 kV; not drop-in due to different footprint and derating. |
| 1.5KE27A-E3/54 | Same electrical specs but commercial-grade (non-AEC-Q101); identical DO-201AD package and pinout | Approved for industrial/commercial use only; excluded from automotive production programs requiring AEC qualification. | Use where cost sensitivity outweighs automotive qualification needs; direct physical and electrical replacement except for qualification status. |
Compared with 1.5KE27CHE3/54, SMBJ24A offers compact SMT integration but sacrifices 60% peak power handling and automotive qualification, while 1.5KE27A-E3/54 provides identical protection performance without AEC-Q101 validation - making the HE3 variant essential for Tier 1 automotive BOMs requiring traceable qualification evidence.
Availability
1.5KE27CHE3/54 is available at Aetrix Electronics and suitable for automotive power distribution units, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply with guaranteed AEC-Q101 compliance and long-term lifecycle support.
Supply support for 1.5KE27CHE3/54 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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KE family was engineered specifically for high-energy transient suppression in harsh environments, emphasizing robustness, tight VBR tolerance, and qualification to AEC-Q101 for automotive electronics.
FAQ
What is the clamping voltage of the 1.5KE27CHE3/54 under full-rated surge current?
The 1.5KE27CHE3/54 exhibits a maximum clamping voltage (VC) of 37.5 V when subjected to 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 guarantees that protected circuitry will not experience voltage excursions beyond this threshold during worst-case transient events, ensuring compatibility with 24 V system-level ICs.
Is the 1.5KE27CHE3/54 suitable for automotive applications?
Yes, the 1.5KE27CHE3/54 is AEC-Q101 qualified (denoted by the HE3 suffix), making it approved for use in automotive electronic control units, body modules, and ADAS sensor interfaces. Its 175 °C maximum junction temperature, robust glass-passivated junction, and validated surge performance meet the reliability requirements for under-hood and cabin-mounted systems per ISO/TS 16949 processes.
How does the 1.5KE27CHE3/54 differ from the standard 1.5KE27A-E3/54?
The 1.5KE27CHE3/54 differs from 1.5KE27A-E3/54 solely in qualification status: the "H" in HE3 indicates AEC-Q101 qualification, while the standard E3 version is commercial-grade only. All electrical parameters (VBR, VC, PPPM), package (DO-201AD), and pinout are identical - enabling direct substitution where automotive qualification is not required.
What is the standoff voltage rating for the 1.5KE27CHE3/54?
The standoff voltage (VWM) for the 1.5KE27CHE3/54 is 23.1 V, representing the maximum continuous reverse voltage the device can block without significant leakage current (<1.0 µA). This allows safe operation on nominal 24 V DC systems while providing adequate margin above normal operating voltage to avoid false triggering during ripple or tolerance variations.
Does the 1.5KE27CHE3/54 require a heatsink for typical surge duty cycles?
No, the 1.5KE27CHE3/54 does not require an external heatsink under standard transient conditions. With a junction-to-lead thermal resistance of 15.4 °C/W and a 1500 W peak pulse rating at 0.01% duty cycle, heat dissipation is managed effectively through the leads alone. However, for repetitive surge events exceeding 1 pulse per minute, PCB copper pour and lead length optimization should be verified per Figure 5 derating curves.
1.5KE27CHE3/54 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE27CHE3/54 FAQ
1.How can I place an order for 1.5KE27CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27CHE3/54 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 1.5KE27CHE3/54 reliable?
The price and inventory of 1.5KE27CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE27CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27CHE3/54?
1.5KE27CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27CHE3/54 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 1.5KE27CHE3/54?
For technical support, including 1.5KE27CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE27CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE27CHE3/54 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 1.5KE27CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE27CHE3/54?
All 1.5KE27CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27CHE3/54, 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 1.5KE27CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE27CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27CHE3/54 Tags
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