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Vishay General Semiconductor - Diodes Division 1.5KE120C-E3/54
- Part No.:
- 1.5KE120C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120C-E3/54.pdf
- Description:
- TVS DIODE 97.2VWM 173VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,357
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Product details
Overview
1.5KE120C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on power and signal lines. It features a 120 V breakdown voltage (VBR = 114–126 V), 1500 W peak pulse power (10/1000 µs), 165 V maximum clamping voltage at rated current, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 1.5KE120C-E3/54 datasheet, 1.5KE120C-E3/54 pinout, 1.5KE120C-E3/54 application, or 1.5KE120C-E3/54 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, clamping behavior under surge conditions, thermal derating curves, and direct alternatives with documented parameter differences.
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 characteristic applies equally in both directions, with no polarity marking on the case - unlike unidirectional variants that feature a cathode band.
It is rated for 1500 W peak pulse power per 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance of 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient). Clamping voltage rises linearly with peak pulse current, as confirmed by Fig. 9 and Fig. 10 in the official datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA test current - defines reliable conduction onset under bidirectional surge |
| VWM | 102 V - maximum continuous working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 165 V at 9.1 A peak pulse current - actual clamped voltage seen by protected circuit during worst-case transient |
| PPPM | 1500 W - peak surge energy absorption capability using standard 10/1000 µs waveform |
| IPPM | 9.1 A - maximum non-repetitive surge current the device sustains without failure |
| TJ max | +175 °C - enables operation in under-hood automotive or high-temperature industrial environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded, UL 94 V-0 compliant housing |
Pinout & Package
1.5KE120C-E3/54 uses the JEDEC DO-201AD axial package (Case Style 1.5KE), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking is present - consistent with its bidirectional function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path terminal | Either lead serves as input/output for transient energy - no DC polarity dependency; connects inline with protected line |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems |
| Clamping ratio (VC/VBR) ≈ 1.38 | Ensures low overvoltage stress on downstream components during clamping event |
| Response time < 1 ns | Activates before most semiconductor damage thresholds are exceeded during ESD or lightning-induced transients |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets JESD 201 Class 1A whisker resistance; suitable for automated through-hole assembly |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between rail and ground, absorbing >100 V spikes within nanoseconds. Use Value: Prevents latch-up or gate oxide rupture in MCU power regulators and CAN transceivers exposed to ISO 7637-2 Pulse 5a/b. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) from EFT and surge coupling in factory automation sensors. IC Role / Device Role / Timing Role: Low-capacitance shunt protector across signal and return, limiting voltage excursion to ≤165 V during 1 kV/500 Ω surge. Use Value: Maintains signal integrity and avoids false triggering in PLC analog input stages without adding filtering delay. |
| Telecom AC/DC Front-End | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding rectified AC inputs in PoE injectors and DSL line cards against lightning-induced surges on primary-side windings. IC Role / Device Role / Timing Role: Primary-side TVS connected across bridge output, clamping induced common-mode transients before they reach switching FETs. Use Value: Eliminates need for external MOVs in compact designs while meeting UL 497B surge protector classification (QVGQ2). |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Bidirectional clamp mounted across motor terminals, diverting inductive kickback energy away from driver ICs and microcontrollers. Use Value: Extends lifespan of H-bridge MOSFETs and prevents reset events in embedded motor controllers during frequent start-stop cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 193 V @ 3.1 A | Better suited for space-constrained PCBs but requires derating for >1 kV surge events | Select when board area is critical and peak surge energy is ≤600 W; verify layout thermal relief for SMB footprint. |
| 1.5KE120A | Unidirectional variant; identical VBR, VC, and PPPM, but marked with cathode band and higher forward voltage (VF = 5.0 V) | Required only where DC bias polarity must be preserved (e.g., single-rail power monitoring) | Choose only if system topology mandates unidirectional clamping; otherwise 1.5KE120C-E3/54 offers symmetric protection with no polarity constraints. |
Compared with SMBJ120CA and 1.5KE120A, the 1.5KE120C-E3/54 uniquely delivers 1500 W bidirectional clamping in an axial through-hole package - enabling higher surge margin than SMBJ-series and eliminating polarity-dependent installation errors inherent in unidirectional types.
Availability
1.5KE120C-E3/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor protection, telecom front-end surge hardening, and consumer appliance motor drive applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE120C-E3/54 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, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - emphasizing rugged packaging, repeatable clamping, and wide operating temperature range for mission-critical power and signal line protection.
FAQ
What is the breakdown voltage tolerance for 1.5KE120C-E3/54?
The 1.5KE120C-E3/54 has a specified breakdown voltage range of 114 V to 126 V at 1 mA test current, representing ±5% tolerance around the nominal 120 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, as validated in Table 1 of Vishay Document 88301.
Is 1.5KE120C-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE120C-E3/54 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and no lead content above threshold limits. It also meets JESD 201 Class 1A whisker resistance testing, making it suitable for high-reliability through-hole assembly processes.
How does the clamping voltage of 1.5KE120C-E3/54 compare to its breakdown voltage?
The 1.5KE120C-E3/54 clamps at 165 V when subjected to its rated 9.1 A peak pulse current (IPPM), yielding a clamping ratio (VC/VBR) of approximately 1.38. This ratio reflects low incremental surge resistance and ensures protected circuits experience minimal overvoltage beyond the 120 V nominal rating during transient events.
Can 1.5KE120C-E3/54 be used in place of a unidirectional TVS like 1.5KE120A?
No - 1.5KE120C-E3/54 is strictly bidirectional and lacks polarity marking, whereas 1.5KE120A is unidirectional with a cathode band. Substituting them requires verifying system DC bias conditions: 1.5KE120C-E3/54 is safe only where reverse voltage across the device never exceeds VWM (102 V); otherwise, 1.5KE120A must be used to prevent forward conduction.
What is the maximum operating temperature for 1.5KE120C-E3/54?
The 1.5KE120C-E3/54 supports a junction temperature range of –55 °C to +175 °C, with thermal resistance RθJL = 15.4 °C/W (junction-to-lead). At ambient temperatures up to +125 °C, proper lead heatsinking ensures the junction remains within limit during repetitive surge events - as confirmed by Fig. 2 and Fig. 5 in the Vishay datasheet.
1.5KE120C-E3/54 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):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 8.7A
- 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
1.5KE120C-E3/54 FAQ
1.How can I place an order for 1.5KE120C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120C-E3/54 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 1.5KE120C-E3/54 reliable?
The price and inventory of 1.5KE120C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE120C-E3/54?
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Once your 1.5KE120C-E3/54 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 1.5KE120C-E3/54?
For technical support, including 1.5KE120C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE120C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE120C-E3/54 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 1.5KE120C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE120C-E3/54?
All 1.5KE120C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120C-E3/54, 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 1.5KE120C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE120C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120C-E3/54 Tags
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Diodes Incorporated
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