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Vishay General Semiconductor - Diodes Division 1.5KE36CHE3/73
- Part No.:
- 1.5KE36CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36CHE3/73.pdf
- Description:
- TVS DIODE 29.1VWM 52VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
1.5KE36CHE3/73 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 34.2 V to 37.8 V breakdown voltage (VBR) at 1.0 mA test current, 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 inductive switching transients and ESD.
For engineers reviewing the 1.5KE36CHE3/73 datasheet, 1.5KE36CHE3/73 pinout, 1.5KE36CHE3/73 application, or 1.5KE36CHE3/73 equivalent, key selection criteria include verified clamping performance under 30.1 A surge, thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification status, RoHS-compliant matte tin plating, and compatibility with J-STD-002 solderability standards.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional-capable transient suppression only when configured as CA-suffix variants - but 1.5KE36CHE3/73 is unidirectional ('A' suffix), with cathode marked by color band. Its clamping action responds in <1 ns, enabling protection of voltage-sensitive semiconductors before damage occurs.
It is rated for 175 °C maximum junction temperature, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits low incremental surge resistance - critical for maintaining low VC under high-current transients. The 1.5KE package uses molded epoxy body meeting UL 94 V-0 flammability rating and JESD 22-B106 solder dip tolerance (275 °C, 10 s).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - defines reliable avalanche initiation threshold across production lot |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 49.9 V at 30.1 A - clamped voltage during 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity without failure |
| IFSM | 200 A (8.3 ms half-sine) - single-event surge current limit for unidirectional forward conduction |
| TJ max. | 175 °C - enables operation in under-hood automotive or industrial ambient environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking requirements for sustained power dissipation |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded DO-201AD molded epoxy package with matte tin-plated leads, UL 94 V-0 compliant, 0.375" (9.5 mm) lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected line; conducts during positive transients when cathode is biased higher |
| Cathode | Avalanche clamping node | Marked with color band; connected to higher-potential rail (e.g., VCC); initiates breakdown when reverse 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) | Handles high-energy surges common in automotive load-dump and industrial motor-switching events |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive electronics per stress-test requirements including HTOL, TCT, and H3TRB |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during transient events, reducing risk to protected ICs |
| J-STD-002 solderable leads | Guarantees robust wetting and intermetallic formation during reflow or wave soldering processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN transceiver power input from ISO 7637-2 Pulse 5a load-dump transients up to 60 V. IC Role / Device Role: Unidirectional TVS placed between VCC and GND, clamping excess voltage before it reaches the transceiver's internal LDO. Use Value: Limits peak voltage to ≤49.9 V at 30.1 A, preventing latch-up or gate oxide rupture in the transceiver IC. | Use Scenario: Safeguarding analog output (4–20 mA) transmitter circuitry from field-wiring induced surges in factory automation. IC Role / Device Role: Primary overvoltage clamp on supply rail feeding op-amps and DACs driving current loop. Use Value: Absorbs 1500 W transients without degradation, preserving calibration integrity and avoiding field return due to sensor failure. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC bus protection in USB-C PD adapters exposed to fast-rising ESD and capacitive coupling noise. IC Role / Device Role: Final-stage TVS on +5 V/9 V/15 V output rails, downstream of DC-DC converter. Use Value: Sub-1 ns response ensures clamping occurs before sensitive USB-PD controller ICs experience overstress. | Use Scenario: Overvoltage protection on -48 V telecom battery feed lines subject to lightning-induced surges per ITU-T K.20. IC Role / Device Role: Standoff-rated TVS on power input to line interface ICs (e.g., SLICs) in access equipment. Use Value: Withstands repetitive 10/1000 µs surges up to 1500 W while maintaining VWM = 30.8 V to avoid false triggering during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Lower PPPM (600 W), smaller SMB package (lower RθJA = 40 °C/W), same VBR range (34.2–37.8 V) | Better suited for space-constrained PCBs with moderate surge exposure; not AEC-Q101 qualified in this variant | Select when board area is limited and surge threat level is ≤600 W; verify thermal margin under sustained ambient conditions. |
| 1.5KE36AHE3_A | Same electrical specs and 1.5KE package, but HE3_A revision code indicates earlier AEC-Q101 qualification batch (vs. HE3/73's later revision) | No functional difference; identical use cases and layout compatibility | Choose for legacy BOM continuity where HE3_A is already approved; no design change required. |
Compared with 1.5KE36CHE3/73, SMBJ36A-E3/52 offers footprint reduction at the cost of 60 % lower surge power handling, while 1.5KE36AHE3_A provides identical performance with traceable qualification history - making the latter ideal for automotive redesigns requiring documented compliance lineage.
Availability
1.5KE36CHE3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply, AEC-Q101 validation, and RoHS-compliant sourcing.
Supply support for 1.5KE36CHE3/73 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, ruggedness, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven silicon avalanche performance.
FAQ
What is the breakdown voltage tolerance for 1.5KE36CHE3/73?
The 1.5KE36CHE3/73 has a specified breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1.0 mA test current, representing ±5.3 % tolerance about the nominal 36 V rating. This tight tolerance ensures consistent clamping behavior across production units and supports predictable system-level overvoltage margining in designs using 1.5KE36CHE3/73.
Is 1.5KE36CHE3/73 suitable for automotive applications?
Yes, 1.5KE36CHE3/73 is AEC-Q101 qualified (as indicated by the 'HE3' suffix and documented in Vishay's 88301 datasheet), making it suitable for automotive powertrain, body control, and infotainment systems. Its 175 °C maximum junction temperature, robust surge capability, and validated reliability testing confirm its readiness for under-hood and chassis-mounted use cases involving 1.5KE36CHE3/73.
How does the clamping voltage of 1.5KE36CHE3/73 compare to its standoff voltage?
The 1.5KE36CHE3/73 has a maximum standoff voltage (VWM) of 30.8 V and a clamping voltage (VC) of 49.9 V at 30.1 A - yielding a clamping ratio of ~1.62. This ratio reflects the device's ability to remain non-conductive below 30.8 V while limiting transient overvoltage to 49.9 V during full-rated surge, a critical parameter for ensuring protected ICs operate within safe absolute maximum ratings when 1.5KE36CHE3/73 is deployed.
What packaging format is used for 1.5KE36CHE3/73?
The 1.5KE36CHE3/73 is supplied in the standard 1.5KE case style (DO-201AD), an axial-leaded package with molded epoxy body, UL 94 V-0 rating, and matte tin-plated leads. It is packaged in 13" diameter paper tape and reel - base quantity 1400 units - conforming to JEDEC shipping standards and compatible with automated pick-and-place assembly for 1.5KE36CHE3/73.
Does 1.5KE36CHE3/73 require a heatsink for typical operation?
No, the 1.5KE36CHE3/73 does not require an external heatsink for transient suppression duty cycles (e.g., single or infrequent 10/1000 µs pulses), as its 1500 W rating is defined for short-duration events. However, for sustained power dissipation above 6.5 W (its rated PD), thermal management becomes necessary - but such conditions are outside normal TVS operation. Layout should ensure adequate copper area around leads to support 1.5KE36CHE3/73 thermal relief during pulse events.
1.5KE36CHE3/73 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 28.8A
- 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
1.5KE36CHE3/73 FAQ
1.How can I place an order for 1.5KE36CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36CHE3/73 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 1.5KE36CHE3/73 reliable?
The price and inventory of 1.5KE36CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE36CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36CHE3/73?
1.5KE36CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36CHE3/73 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 1.5KE36CHE3/73?
For technical support, including 1.5KE36CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE36CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36CHE3/73 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 1.5KE36CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE36CHE3/73?
All 1.5KE36CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36CHE3/73, 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 1.5KE36CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE36CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36CHE3/73 Tags
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