My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE27C-E3/73
- Part No.:
- 1.5KE27C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27C-E3/73.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,131
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE27C-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 27 V breakdown voltage (VBR = 25.7–28.4 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), 37.5 V maximum clamping voltage at 40.0 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs and ICs in automotive sensor interfaces against ESD and inductive switching surges.
For engineers reviewing the 1.5KE27C-E3/73 datasheet, 1.5KE27C-E3/73 pinout, 1.5KE27C-E3/73 application, or 1.5KE27C-E3/73 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant commercial-grade sourcing support.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its symmetrical clamping behavior applies equally in both directions, with no polarity marking on the case - unlike unidirectional variants that use a cathode band.
It is rated for 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derating linearly above 25 °C per Fig. 2, and supports repetitive surge duty cycles up to 0.01 %. The device meets UL 94 V-0 flammability requirements and is solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines reliable conduction onset for overvoltage protection |
| VWM | 23.1 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 37.5 V at 40.0 A - clamped voltage during full 1500 W surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling for 10/1000 µs transients, critical for lightning/inductive spike immunity |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking needs in high-duty-cycle designs |
| TJ range | –55 °C to +175 °C - enables operation in under-hood automotive and industrial environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, through-hole mount with 0.375" lead length |
Pinout & Package
1.5KE27C-E3/73 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with matte tin-plated leads. No polarity marking is present, consistent with bidirectional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (direction-agnostic) | One end of symmetrical P-N junction; interchangeable with cathode in circuit layout |
| Cathode | Transient current exit (direction-agnostic) | Other end of symmetrical P-N junction; electrically identical to anode for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Withstands high-energy transients from inductive load switching without degradation |
| <1 ns response time | Clamps before sensitive ICs experience damaging overvoltage - faster than MOVs or varistors |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for consumer and automotive end equipment |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for lead-free reflow and wave soldering |
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 load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits induced surges to ≤37.5 V, preventing latch-up or gate oxide rupture in 3.3 V/5 V sensor signal chains. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges due to relay coil collapse or motor noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance and filtering. Use Value: Absorbs 1500 W pulses without failure, maintaining system uptime in factory-floor environments with frequent EMI events. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced surges on outdoor-facing copper lines. IC Role / Device Role / Timing Role: First-stage transient suppressor on line-side transformer secondary or primary side, before isolation barrier. Use Value: Clamps common-mode transients to safe levels within <1 ns, preserving signal integrity and meeting ITU-T K.20/21 immunity standards. | Use Scenario: Secondary-side overvoltage protection on AC-DC adapter outputs supplying USB-C PD or smart home hubs. IC Role / Device Role / Timing Role: Final-clamp device after regulation, guarding against output capacitor failure or feedback loop faults. Use Value: Prevents >23.1 V from reaching downstream PMICs or microcontrollers, avoiding brownout resets or permanent damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Lower 600 W PPPM, SMC package (surface-mount), VC = 38.9 V @ 15.4 A | Better suited for space-constrained PCBs; lower surge capacity limits use in high-energy industrial settings | Select when board area is constrained and surge energy rarely exceeds 600 W |
| 1.5KE27A-E3/73 | Unidirectional variant; same VBR/VC but marked cathode band; VF = 3.5 V @ 100 A | Required where DC bias or polarity-sensitive clamping is needed (e.g., DC power rail protection) | Choose only if circuit topology mandates unidirectional conduction or forward-bias operation |
Compared with SMBJ24CA and 1.5KE27A-E3/73, the 1.5KE27C-E3/73 provides higher surge robustness in through-hole form factor and true bidirectional symmetry - making it optimal for AC-coupled or floating signal lines where polarity cannot be assumed.
Availability
1.5KE27C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line interfaces, and consumer power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE27C-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 supplier of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The 1.5KE series was developed for high-energy transient suppression in harsh environments, targeting applications where robustness, repeatable clamping, and wide temperature operation are mandatory - especially in automotive, industrial, and infrastructure systems.
FAQ
What is the breakdown voltage range for the 1.5KE27C-E3/73?
The 1.5KE27C-E3/73 has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at a test current of 1.0 mA, measured per JEDEC standard. This range ensures consistent clamping onset across production lots and supports design margining for 24 V nominal systems. The 1.5KE27C-E3/73 maintains this specification under operating temperatures from –55 °C to +175 °C.
Is the 1.5KE27C-E3/73 RoHS compliant and lead-free solder compatible?
Yes, the 1.5KE27C-E3/73 carries the E3 suffix, indicating full RoHS compliance and qualification to JESD 201 Class 1A whisker resistance. Its matte tin-plated leads are solderable using standard lead-free reflow and wave processes per J-STD-002 and JESD 22-B102. The 1.5KE27C-E3/73 withstands solder dip at 275 °C for up to 10 seconds.
How does the clamping voltage of the 1.5KE27C-E3/73 compare to its breakdown voltage?
The 1.5KE27C-E3/73 clamps to 37.5 V at its rated peak pulse current of 40.0 A (10/1000 µs waveform), which is approximately 37 % above its minimum breakdown voltage of 25.7 V. This incremental clamping voltage (ΔVC = 11.8 V) reflects low dynamic impedance and ensures predictable voltage limiting during surge events. The 1.5KE27C-E3/73 achieves this while maintaining bidirectional symmetry.
Can the 1.5KE27C-E3/73 be used in place of a unidirectional TVS like the 1.5KE27A-E3/73?
No - the 1.5KE27C-E3/73 is strictly bidirectional and lacks polarity marking, whereas the 1.5KE27A-E3/73 is unidirectional with a cathode band and forward voltage specification (VF = 3.5 V). Substituting the 1.5KE27C-E3/73 in DC-biased circuits may cause unintended conduction. Use the 1.5KE27C-E3/73 only where symmetrical clamping is required, such as AC lines or floating differential pairs.
What is the thermal resistance and maximum junction temperature of the 1.5KE27C-E3/73?
The 1.5KE27C-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and a maximum junction temperature (TJ) of +175 °C. Its junction-to-lead resistance (RθJL) is 15.4 °C/W, supporting effective heat transfer via PCB copper pours or chassis mounting. These ratings allow sustained operation in under-hood automotive and industrial control cabinet environments.
1.5KE27C-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):
- 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-E3/73 FAQ
1.How can I place an order for 1.5KE27C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27C-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 1.5KE27C-E3/73 reliable?
The price and inventory of 1.5KE27C-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 1.5KE27C-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE27C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27C-E3/73?
1.5KE27C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27C-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 1.5KE27C-E3/73?
For technical support, including 1.5KE27C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE27C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE27C-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 1.5KE27C-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE27C-E3/73?
All 1.5KE27C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27C-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 1.5KE27C-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE27C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27C-E3/73 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
