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Vishay General Semiconductor - Diodes Division 1.5KE30CHE3/54
- Part No.:
- 1.5KE30CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CHE3/54.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,430
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Product details
Overview
1.5KE30CHE3/54 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 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 25.6 V stand-off voltage (VWM), 41.4 V clamping voltage (VC) at 36.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the 1.5KE30CHE3/54 datasheet, 1.5KE30CHE3/54 pinout, 1.5KE30CHE3/54 application, or 1.5KE30CHE3/54 equivalent, this part delivers verified transient suppression performance for 24 V system rails, meets AEC-Q101 qualification (HE3 suffix), and supports tape-and-reel delivery (13" reel, 1400 pcs) with RoHS-compliant matte tin-plated leads.
Technical Context
The 1.5KE30CHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response time (<1 ns) to ESD and lightning-induced transients. Its unidirectional polarity uses a cathode band marking and exhibits low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.42).
Thermally, it supports operation from –55 °C to +175 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15.4 °C/W, and is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) - critical for sustaining load dump events in automotive 12 V/24 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise avalanche initiation threshold for reliable triggering before downstream component damage |
| VWM | 25.6 V - maximum continuous reverse working voltage; ensures no conduction during normal 24 V rail operation |
| VC @ IPPM | 41.4 V at 36.2 A - clamped voltage under 1500 W transient; limits stress on protected 30 V-rated ICs or MOSFETs |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy surges such as ISO 7637-2 Pulse 5a without degradation |
| IFSM | 200 A (8.3 ms half-sine) - withstands automotive load dump events without failure |
| TJ range | –55 °C to +175 °C - enables deployment in engine bay, industrial controls, and under-hood environments |
| Package | DO-201AD (Case Style 1.5KE) - axial-leaded, UL 94 V-0 molded epoxy package with 0.375" lead length for through-hole mounting |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, glass-passivated silicon junction in molded epoxy body meeting UL 94 V-0. Cathode identified by color band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected circuit (e.g., ground or return path) |
| Cathode | Current exit terminal in forward bias; avalanche conduction node in reverse | Marked with band; connected to line/rail requiring overvoltage clamping (e.g., 24 V supply input) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade stress testing including HTOL, temperature cycling, and HTRB - suitable for Tier-1 ECUs |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 16750-2 and ISO 7637-2 transients without derating at TA ≤ 25 °C |
| Sub-nanosecond response time | Clamps transients within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002/JESD 22-B102 and whisker resistance per JESD 201 Class 2 (HE3) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 24 V battery-fed control modules exposed to load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping device placed at power entry point to limit rail voltage to safe levels for downstream DC/DC converters and microcontrollers. Use Value: Clamps to 41.4 V during 36.2 A surge, preventing latch-up or gate oxide rupture in 30 V-rated power management ICs. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed across noisy factory floors with EMI and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt fast transients before reaching precision ADC front-end. Use Value: Sub-ns response preserves signal fidelity; 25.6 V VWM avoids loading 20–24 V sensor supply rails during normal operation. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Protection |
Use Scenario: AC/DC power inputs on telecom line cards subjected to lightning-induced surges on shared building grounds. IC Role / Device Role / Timing Role: Secondary-level protector downstream of GDT or MOV, providing precise low-clamp voltage for rectifier and controller ICs. Use Value: 41.4 V clamping protects 36 V-rated bridge rectifiers and 40 V-input PWM controllers without overdesigning upstream components. |
Use Scenario: Secondary-side DC output of wall adapters powering USB-C PD devices or smart home hubs. IC Role / Device Role / Timing Role: Unidirectional clamp on regulated 5 V/9 V/12 V outputs to prevent backfeed damage during hot-plug or short-circuit recovery. Use Value: 25.6 V VWM allows use on 24 V adapter outputs; 1500 W rating handles repeated capacitor-charging surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | DO-214AA package (SMB), 30 V VBR, 48.4 V VC @ 24.5 A, 600 W PPPM | Lower power rating and higher clamping voltage; suited for space-constrained PCBs where 1500 W is not required | Select when board area is limited and peak surge energy is ≤600 W; not drop-in due to different package and thermal profile |
| 1.5KE30A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), E3-only whisker test (Class 1A) | Lacks automotive qualification; acceptable for industrial/commercial power supplies with less stringent reliability requirements | Choose for cost-sensitive non-automotive designs where AEC-Q101 is unnecessary; identical pinout and layout |
Compared with 1.5KE30CHE3/54, SMBJ30A-E3/52 trades peak power and clamping performance for compactness, while 1.5KE30A-E3/54 retains full mechanical and electrical compatibility but omits AEC-Q101 validation - making it suitable only for non-automotive use cases.
Availability
1.5KE30CHE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom line card surge protection requiring stable component supply, AEC-Q101 compliance, and 1500 W transient handling capability.
Supply support for 1.5KE30CHE3/54 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications where robustness and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5KE30CHE3/54 under maximum rated surge current?
The 1.5KE30CHE3/54 has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured using the standard 10/1000 µs waveform. This value ensures protected downstream components - such as 30 V-rated MOSFETs or power management ICs - remain within safe operating voltage limits during transient events. The clamping performance is guaranteed across the full operating temperature range.
Is the 1.5KE30CHE3/54 qualified for automotive applications?
Yes, the 1.5KE30CHE3/54 is AEC-Q101 qualified, as indicated by the "HE3" suffix. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling, and highly accelerated stress testing (HAST), confirming suitability for under-hood and chassis-mounted automotive electronics. The HE3 designation also confirms compliance with JESD 201 Class 2 whisker testing.
What does the "/54" in 1.5KE30CHE3/54 signify?
The "/54" in 1.5KE30CHE3/54 denotes the preferred packaging option: 13-inch diameter paper tape and reel containing 1400 units. This format is optimized for automated SMT placement equipment and supports high-volume manufacturing. The "E3" portion indicates RoHS-compliant matte tin plating, while "HE3" confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
How does the 1.5KE30CHE3/54 differ from the standard 1.5KE30A-E3/54?
The 1.5KE30CHE3/54 differs from 1.5KE30A-E3/54 primarily in qualification level: the "H" in HE3 signifies AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas the E3-only version is commercial grade with Class 1A whisker testing. Electrically and mechanically, both share identical VBR, VC, package (DO-201AD), and pinout - enabling direct layout reuse where automotive qualification is not required.
Can the 1.5KE30CHE3/54 be used in bidirectional configurations?
No, the 1.5KE30CHE3/54 is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA"). Bidirectional variants in the 1.5KE family - such as 1.5KE30CA - exist but are distinct parts with symmetrical breakdown in both polarities. Using the unidirectional 1.5KE30CHE3/54 in AC or floating signal paths would result in forward conduction during negative half-cycles and potential failure.
1.5KE30CHE3/54 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 34.5A
- 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
1.5KE30CHE3/54 FAQ
1.How can I place an order for 1.5KE30CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CHE3/54 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 1.5KE30CHE3/54 reliable?
The price and inventory of 1.5KE30CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE30CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CHE3/54?
1.5KE30CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CHE3/54 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 1.5KE30CHE3/54?
For technical support, including 1.5KE30CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE30CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CHE3/54 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 1.5KE30CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE30CHE3/54?
All 1.5KE30CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CHE3/54, 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 1.5KE30CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE30CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CHE3/54 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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