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Vishay General Semiconductor - Diodes Division 1.5KE12CHE3/73
- Part No.:
- 1.5KE12CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12CHE3/73.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,606
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Product details
Overview
1.5KE12CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤16.7 V at 89.8 A, making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial power supplies.
For engineers reviewing the 1.5KE12CHE3/73 datasheet, 1.5KE12CHE3/73 pinout, 1.5KE12CHE3/73 application, or 1.5KE12CHE3/73 equivalent, this page delivers verified electrical specs, JEDEC-standard 1.5KE package details, clamping performance data, and AEC-Q101-qualified alternatives for automotive-grade surge protection design.
Technical Context
This TVS diode operates as a fast-acting, silicon-based voltage clamp with glass-passivated junction technology. Its unidirectional polarity enables cathode-referenced protection on DC rails, and its 10/1000 µs waveform rating ensures robust handling of lightning-induced surges and inductive switching transients.
The device exhibits low incremental surge resistance and sub-nanosecond response time (<1 ns), enabling effective suppression before downstream components experience overstress. With a maximum operating junction temperature of +175 °C and thermal resistance RθJL = 15.4 °C/W, it supports reliable operation in thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise clamping onset threshold for circuit-level overvoltage detection |
| VWM | 10.2 V - maximum continuous reverse working voltage; sets safe DC bias margin below breakdown |
| VC @ IPPM | 16.7 V at 89.8 A - actual clamped voltage during 1500 W transient, critical for downstream component voltage headroom |
| PPPM | 1500 W (10/1000 µs) - peak surge energy absorption capacity, validated per REA and IEC 61000-4-5 standards |
| IFSM | 200 A (8.3 ms half-sine) - single-pulse forward surge rating, supports high-current inductive load switching events |
| TJ max | +175 °C - extended junction temperature range enables use in under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance allows efficient heat transfer to PCB copper without heatsink |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); conducts only during overvoltage events above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive applications |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics per stress test conditions including HTOL and TC |
| Sub-nanosecond response time | Clamps transients before propagation into IC inputs, eliminating need for additional RC filtering stages |
| UL 94 V-0 compliant molding compound | Provides flame-retardant encapsulation required for safety-critical end equipment certifications |
Applications
| Automotive Power Distribution | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary unidirectional clamping element placed directly across supply rail upstream of LDOs and microcontrollers. Use Value: Limits transient voltage to ≤16.7 V, preserving 20 V-rated input capacitors and preventing latch-up in 5 V logic domains. | Use Scenario: Shielding digital input modules from induced surges on 24 V field wiring in factory automation. IC Role / Device Role / Timing Role: Standoff protector on optocoupler input side, absorbing 1 kV/500 A surge pulses per IEC 61000-4-5. Use Value: Enables direct interface to noisy industrial buses without external series impedance or timing delays. |
| Consumer Appliance Motor Control | Telecom Power Supply Input Stage |
Use Scenario: Suppressing flyback spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Snubber-connected across motor terminals to clamp inductive kickback before reaching H-bridge MOSFETs. Use Value: Reduces MOSFET VDS stress by >40 %, extending FET lifetime and eliminating need for larger SOA-rated devices. | Use Scenario: Safeguarding AC/DC front-end rectifiers and PFC controllers against lightning surges entering via mains input. IC Role / Device Role / Timing Role: First-stage transient suppressor mounted at AC inlet, coordinated with MOVs and gas discharge tubes. Use Value: Provides <1 ns response to complement slower MOV clamping, reducing let-through energy by 3× versus MOV-only designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.5 mm), same VBR range (11.4–12.6 V) | Preferred for space-constrained consumer PCBs; insufficient for automotive load dump per ISO 7637-2 Pulse 5a | Select when board area is critical and surge energy does not exceed 600 W |
| 1.5KE12CAHE3/73 | Bidirectional variant with identical VBR, same 1500 W rating, but symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose only when bidirectional protection is mandated by signal topology |
Compared with SMBJ12A and 1.5KE12CAHE3/73, the 1.5KE12CHE3/73 delivers higher surge robustness in a through-hole package ideal for high-reliability industrial and automotive power rails, while avoiding layout compromises of surface-mount alternatives or unnecessary bidirectional complexity.
Availability
1.5KE12CHE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and telecom power supply surge hardening requiring stable component supply and full AEC-Q101 qualification traceability.
Supply support for 1.5KE12CHE3/73 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial, automotive, and computing applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, with emphasis on AEC-Q101 qualification, UL 94 V-0 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What is the breakdown voltage tolerance of the 1.5KE12CHE3/73?
The 1.5KE12CHE3/73 has a specified breakdown voltage range of 11.4 V to 12.6 V at 1 mA test current, representing ±5 % tolerance around the nominal 12 V rating. This tight VBR window ensures predictable clamping behavior in precision 12 V system designs and aligns with JEDEC standard 1.5KE family specifications documented in Vishay's 88301 datasheet revision 09-Aug-2022.
Is the 1.5KE12CHE3/73 RoHS compliant and lead-free?
Yes, the 1.5KE12CHE3/73 carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. The matte tin-plated leads meet J-STD-002 solderability requirements, and the device passes JESD 201 Class 1A whisker testing. All materials comply with Vishay's document 99912 for substance restrictions.
Does the 1.5KE12CHE3/73 require a heatsink for 6.5 W continuous dissipation?
No - the 6.5 W power dissipation rating (PD) applies only under infinite heatsink conditions at TL = 75 °C. In typical PCB mounting, the 1.5KE12CHE3/73 relies on its low RθJL of 15.4 °C/W to conduct heat through leads into copper planes. Continuous operation at 6.5 W is not intended; the device is rated for transient pulses up to 1500 W, not steady-state power.
How does the 1.5KE12CHE3/73 differ from the non-HE3 version 1.5KE12A?
The 1.5KE12CHE3/73 includes the "HE3" suffix, signifying AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and enhanced process controls for automotive use. The base 1.5KE12A lacks these qualifications and is rated commercial grade only. Both share identical electrical specs, but only the HE3 variant is approved for automotive powertrain and body electronics per Vishay's ordering information table.
Can the 1.5KE12CHE3/73 be used in bidirectional signal protection?
No - the "C" in 1.5KE12CHE3/73 denotes the AEC-Q101 qualification, not bidirectionality; this part is unidirectional. For bidirectional protection, the correct part is 1.5KE12CAHE3/73, which uses a center-tapped die structure and clamps symmetrically in both polarities. Using the unidirectional 1.5KE12CHE3/73 on AC or floating lines risks forward conduction and failure.
1.5KE12CHE3/73 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 86.7A
- 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
1.5KE12CHE3/73 FAQ
1.How can I place an order for 1.5KE12CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12CHE3/73 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 1.5KE12CHE3/73 reliable?
The price and inventory of 1.5KE12CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE12CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12CHE3/73?
1.5KE12CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12CHE3/73 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 1.5KE12CHE3/73?
For technical support, including 1.5KE12CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE12CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE12CHE3/73 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 1.5KE12CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE12CHE3/73?
All 1.5KE12CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12CHE3/73, 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 1.5KE12CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE12CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12CHE3/73 Tags
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