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Vishay General Semiconductor - Diodes Division 1.5SMC30CAHE3_A/H
- Part No.:
- 1.5SMC30CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30CAHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,713
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Product details
Overview
1.5SMC30CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36.2 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor signal lines against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC30CAHE3_A/H datasheet, 1.5SMC30CAHE3_A/H pinout, 1.5SMC30CAHE3_A/H application, or 1.5SMC30CAHE3_A/H equivalent, this part delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD/surge protection in harsh environments.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable clamping performance under repetitive surge stress, and its thermal resistance (RθJA = 75 °C/W) supports reliable operation up to 150 °C junction temperature.
The device complies with UL 497B recognition (QVGQ2) and meets JESD201 Class 2 whisker resistance. It is rated for 0.01 % duty cycle repetitive surges and derates linearly above 25 °C ambient per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 33.3–36.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 41.4 V at 36.2 A - Maximum voltage seen by protected circuit during 10/1000 μs surge; determines IC survivability margin. |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IR (Leakage) | 1.0 μA max at 30 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments without thermal derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Acts as cathode during positive transients; forms symmetrical conduction path with cathode terminal. |
| Cathode | Transient current exit (either polarity) | Acts as anode during negative transients; completes bidirectional clamping loop with anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 36.2 A - exceeds IEC 61000-4-5 Level 4 (4 kV line-to-line) requirements. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, high-temperature operating life, and ESD robustness. |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without baking - supports standard SMT assembly without moisture sensitivity concerns. |
| Glass passivated junction | Ensures long-term stability of clamping parameters and low leakage drift over temperature and lifetime. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp ±40 V transients before reaching precision ADC front-end. Use Value: Maintains signal fidelity below 30 V operating range while limiting fault voltage to 41.4 V - preventing damage to 3.3 V/5 V sensor signal conditioning ICs. |
Use Scenario: Guarding CAN_H/CAN_L differential pair in vehicle body control modules against ESD and ISO 7637-2 pulse 1/2b surges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor mounted at PCB edge connector to absorb common-mode energy without distorting 1 Mbps CAN signaling. Use Value: Clamps transients within 1 ns response time while adding <0.5 pF parasitic capacitance - preserving signal rise/fall times and bus timing margins. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Safeguarding 48 V DC input rails of PoE-powered network switches against lightning-induced surges on outdoor Ethernet runs. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC-DC converter input to shunt >1 kV transients before bulk capacitor charging stage. Use Value: Absorbs 1500 W peak energy without degradation, enabling compliance with ITU-T K.21 basic protection level for telecom infrastructure. |
Use Scenario: Secondary-side surge suppression on VBUS and CC lines of USB-C receptacles in portable monitors and docking stations. IC Role / Device Role / Timing Role: Bidirectional clamp protecting Type-C controller and power delivery ICs from hot-plug ESD and cable-borne transients. Use Value: AEC-Q101 qualification ensures reliability under repeated 8 kV contact ESD events, while 30 V VWM avoids interference with 20 V PD negotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same 30 V VWM and bidirectional configuration, but lower PPPM (400 W) and higher VC (48.4 V at 8.3 A). | Limited to lower-energy transients (IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 surge immunity. | Select when cost-sensitive designs require basic ESD protection without automotive qualification or high-power surge capability. |
| 1.5KE30CA | Through-hole TO-218 package, same 30 V VWM and 1500 W rating, but slower response and no AEC-Q101 qualification. | Not suitable for automated SMT assembly or under-hood automotive placement due to package and qualification gap. | Choose only for legacy through-hole designs where board space and reflow compatibility are not constraints. |
Compared with SMAJ30CA and 1.5KE30CA, the 1.5SMC30CAHE3_A/H uniquely combines SMT compatibility, AEC-Q101 qualification, and full 1500 W surge capability in a low-profile DO-214AB package - making it the only option meeting automotive-grade surge + ESD + production scalability requirements simultaneously.
Availability
1.5SMC30CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, telecom power inputs, and consumer USB-C port protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1.5SMC30CAHE3_A/H 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, automotive qualification, and high-volume manufacturability.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in automotive, industrial, and telecom systems - prioritizing AEC-Q101 compliance, low clamping ratio, and robust surge endurance.
FAQ
What is the clamping voltage of the 1.5SMC30CAHE3_A/H under a 10/1000 μs surge?
The 1.5SMC30CAHE3_A/H has a maximum clamping voltage (VC) of 41.4 V at 36.2 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and reflects worst-case voltage imposed on downstream circuitry during standardized surge testing - critical for ensuring protected ICs remain within absolute maximum ratings.
Is the 1.5SMC30CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC30CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It passes high-temperature operating life (HTOL), temperature cycling (TCT), and ESD tests required for under-hood and chassis-mounted electronics - making it appropriate for engine control units, ADAS sensor interfaces, and body control modules where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix mean in 1.5SMC30CAHE3_A/H?
The "CA" suffix in 1.5SMC30CAHE3_A/H indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., 1.5SMC30A), the CA version has identical breakdown, clamping, and leakage characteristics regardless of voltage polarity, enabling use on AC-coupled lines, differential buses like CAN, or any application where polarity reversal may occur.
What is the thermal resistance of the 1.5SMC30CAHE3_A/H?
The 1.5SMC30CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and informs thermal design margins - for example, at 6.5 W steady-state dissipation, junction temperature rise would be ~488 °C above ambient, confirming that the device is intended for pulsed, not continuous, power dissipation.
How does the 1.5SMC30CAHE3_A/H compare to the SMAJ30CA in surge handling capability?
The 1.5SMC30CAHE3_A/H delivers 1500 W peak pulse power (PPPM) with a 10/1000 μs waveform, whereas the SMAJ30CA is rated for only 400 W. This threefold difference means the 1.5SMC30CAHE3_A/H can safely absorb significantly larger transients - such as those defined in IEC 61000-4-5 Level 4 (4 kV line-to-line) - while the SMAJ30CA is limited to lower-energy threats like IEC 61000-4-2 ESD. The 1.5SMC30CAHE3_A/H also exhibits lower clamping voltage (41.4 V vs. 48.4 V), improving system-level protection margin.
1.5SMC30CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC30CAHE3_A/H FAQ
1.How can I place an order for 1.5SMC30CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30CAHE3_A/H 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 1.5SMC30CAHE3_A/H reliable?
The price and inventory of 1.5SMC30CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC30CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30CAHE3_A/H?
1.5SMC30CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30CAHE3_A/H 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 1.5SMC30CAHE3_A/H?
For technical support, including 1.5SMC30CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC30CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30CAHE3_A/H 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 1.5SMC30CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC30CAHE3_A/H?
All 1.5SMC30CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30CAHE3_A/H, 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 1.5SMC30CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC30CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30CAHE3_A/H Tags
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