My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE27CHE3/73
- Part No.:
- 1.5KE27CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27CHE3/73.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,243
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE27CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal 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), clamping voltage of 37.5 V at 40.0 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the 1.5KE27CHE3/73 datasheet, 1.5KE27CHE3/73 pinout, 1.5KE27CHE3/73 application, or 1.5KE27CHE3/73 equivalent, key selection criteria include verified clamping performance under 10/1000 µs surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin leads, and AEC-Q101 qualification status per HE3 suffix variant.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its clamping action begins at 25.7 V (min VBR) and limits voltage to ≤37.5 V at 40.0 A IPPM - critical for safeguarding 3.3 V/5 V/24 V logic and power stages against ESD, lightning-induced surges, and inductive switching spikes.
It is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TL = 75 °C, with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W. The device supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits VF = 3.5 V at 100 A - confirming suitability for high-energy transient suppression without forward conduction degradation.
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 where clamping initiates |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 37.5 V at 40.0 A - actual clamped voltage during 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for industrial-grade surge immunity |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-current inductive kick without bond wire failure |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and high-temp industrial environments |
| Package | Case Style 1.5KE - axial-lead DO-201AD package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE27CHE3/73 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package: cylindrical epoxy body, matte tin-plated leads, cathode indicated by color band. Leads are solderable per J-STD-002 and JESD 22-B102; meets JESD 201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to lower-potential side (e.g., GND or return path) during surge clamp operation |
| Cathode (banded end) | Current exit point in forward bias; reverse-biased terminal in protection mode | Connected to protected line (e.g., 24 V rail); absorbs transient energy when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment |
| Clamping ratio VC/VBR ≈ 1.46 | Low ratio confirms efficient energy diversion with minimal overvoltage overshoot on protected node |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive powertrain and body electronics applications requiring zero-failure reliability |
| RoHS-compliant, matte tin leads | Enables lead-free reflow compatibility and eliminates post-soldering cleaning for high-volume assembly |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protects gate drivers and microcontroller I/O from flyback voltage spikes generated by relay and solenoid switching in PLCs and HVAC controls. IC Role / Device Role: Unidirectional TVS placed between 24 V supply rail and ground, clamping transients before they reach sensitive logic. Use Value: Limits voltage to ≤37.5 V during 40 A surges, preventing latch-up or oxide breakdown in 3.3 V MCU GPIOs and CAN transceivers. | Use Scenario: Shields LIN bus transceivers and LED driver ICs from load dump and jump-start surges in door modules and lighting systems. IC Role / Device Role: Primary rail protector on 12 V battery input, mounted upstream of DC-DC converters and LDOs. Use Value: Withstands 200 A surge (8.3 ms) and maintains VWM = 23.1 V - compatible with ISO 16750-2 load dump profiles. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Guards PoE-powered Ethernet switch ports and remote PHYs against induced lightning surges on outdoor cabling. IC Role / Device Role: Secondary-level protection after gas discharge tube (GDT), placed directly at RJ45 connector interface. Use Value: Sub-1 ns response time ensures clamping occurs before GDT fires, reducing let-through energy to <100 mJ. | Use Scenario: Safeguards microcontroller reset lines and touch-sensing circuits in washing machines and refrigerators exposed to ESD and relay noise. IC Role / Device Role: Localized protection on 5 V or 3.3 V internal rails, adjacent to connectors and mechanical switches. Use Value: Low leakage (<1.0 µA at 23.1 V) prevents false resets; 175 °C max junction temperature accommodates sealed enclosure thermal buildup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | DO-214AA package (SMB), 27 V VBR, 600 W PPPM, higher VC/VBR ratio (1.56) | Lower surge rating suits consumer-grade designs; surface-mount only | Select SMBJ27A for space-constrained PCBs where 600 W surge margin is sufficient and through-hole mounting is not required. |
| 1.5KE27A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), reel packaging (1400 pcs) | Not qualified for automotive use; suitable for industrial/commercial power supplies | Choose 1.5KE27A-E3/54 for cost-sensitive, non-automotive applications needing identical form-factor and performance without automotive qualification. |
Compared with 1.5KE27CHE3/73, SMBJ27A offers smaller footprint but reduced surge capability and no AEC-Q101 validation; 1.5KE27A-E3/54 matches all electrical and mechanical specs but lacks automotive qualification - making 1.5KE27CHE3/73 the sole choice for AEC-Q101-compliant designs requiring through-hole robustness and 1500 W clamping.
Availability
1.5KE27CHE3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer appliance control boards requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE27CHE3/73 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 leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and infrastructure equipment where 1500 W surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE27CHE3/73?
The 1.5KE27CHE3/73 has a specified breakdown voltage range of 25.7 V to 28.4 V at 1.0 mA test current, corresponding to ±10% tolerance around the nominal 27 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for consistent protection in safety-critical circuits using the 1.5KE27CHE3/73.
Is 1.5KE27CHE3/73 AEC-Q101 qualified?
Yes, 1.5KE27CHE3/73 is AEC-Q101 qualified. The "HE3" suffix denotes Vishay's AEC-Q101-compliant version, validated for automotive applications including engine control units and body electronics. This qualification covers stress tests for temperature cycling, humidity, high-temperature operating life, and surge robustness - confirming reliability for automotive deployments using the 1.5KE27CHE3/73.
What is the clamping voltage of 1.5KE27CHE3/73 at its rated peak pulse current?
The 1.5KE27CHE3/73 clamps to a maximum of 37.5 V at its rated peak pulse current of 40.0 A (10/1000 µs waveform). This value is measured per JEDEC standards and represents the upper limit of voltage seen by protected circuitry during worst-case surge events - a key parameter for verifying safe operating margins of downstream ICs when using the 1.5KE27CHE3/73.
Does 1.5KE27CHE3/73 have bidirectional capability?
No, 1.5KE27CHE3/73 is a unidirectional TVS diode. Its part number ends in "A", indicating unidirectional polarity with cathode marked by a band. Bidirectional variants use the "CA" suffix (e.g., 1.5KE27CA). For AC-line or differential-signal protection requiring symmetrical clamping, a separate bidirectional device must be selected - the 1.5KE27CHE3/73 functions only in DC rail protection configurations.
What package type does 1.5KE27CHE3/73 use, and what are its key mechanical properties?
1.5KE27CHE3/73 uses the DO-201AD (Case Style 1.5KE) axial-leaded package: molded epoxy body meeting UL 94 V-0 flammability rating, 0.375" (9.5 mm) lead length, and matte tin-plated leads compliant with J-STD-002 solderability. Its RθJA = 75 °C/W and RθJL = 15.4 °C/W enable effective thermal management in through-hole power applications using the 1.5KE27CHE3/73.
1.5KE27CHE3/73 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE27CHE3/73 FAQ
1.How can I place an order for 1.5KE27CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27CHE3/73 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 1.5KE27CHE3/73 reliable?
The price and inventory of 1.5KE27CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE27CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27CHE3/73?
1.5KE27CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27CHE3/73 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 1.5KE27CHE3/73?
For technical support, including 1.5KE27CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE27CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE27CHE3/73 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 1.5KE27CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE27CHE3/73?
All 1.5KE27CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27CHE3/73, 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 1.5KE27CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE27CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27CHE3/73 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 …
