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Vishay General Semiconductor - Diodes Division 1.5SMC43CAHE3_A/I
- Part No.:
- 1.5SMC43CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC43CAHE3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,144
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Product details
Overview
1.5SMC43CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 43 V standoff voltage (VWM), 47.8 V minimum breakdown voltage (VBR), 59.3 V maximum clamping voltage (VC) at 25.3 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC43CAHE3_A/I datasheet, 1.5SMC43CAHE3_A/I pinout, 1.5SMC43CAHE3_A/I application, or 1.5SMC43CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: under transient overvoltage, it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The 1.5SMC43CAHE3_A/I delivers consistent clamping response within 1 ns, with low incremental surge resistance enabling effective energy diversion during lightning-induced surges or inductive switching transients. Its thermal resistance (RθJA = 75 °C/W) and 150 °C max junction temperature support sustained operation in high-reliability automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 43 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - Verified avalanche onset range ensuring predictable turn-on during transients. |
| VC (Clamping) | 59.3 V at 25.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC/MOSFET survivability. |
| PPPM | 1500 W - Surge energy handling capacity per single 10/1000 μs pulse; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage) | <1.0 μA at 43 V - Negligible standby current; avoids loading sensitive analog or low-power circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive or high-ambient industrial enclosures without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, UL 94 V-0 compliant molding compound. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bidirectional) | Equal conduction path in either polarity; no polarity marking required on device body. |
| Cathode | Current exit terminal (bidirectional) | Functionally identical to anode in CA-series devices; symmetrical terminal behavior enables universal placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both polarities - eliminates orientation concerns during automated placement and simplifies PCB layout. |
| AEC-Q101 qualification | Validated for automotive electronics per full stress test suite - supports use in ADAS sensors, body control modules, and infotainment power rails. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 25.3 A - meets IEC 61000-4-5 (Level 4) and ISO 7637-2 (Pulse 1/2a/3a) requirements. |
| MSL Level 1 moisture sensitivity | Reflow-compatible at 260 °C peak without baking - reduces manufacturing risk and supports J-STD-020-compliant SMT processes. |
| Glass-passivated junction | Stable electrical parameters over lifetime and temperature - ensures long-term clamping consistency in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector interface to clamp fast-rising transients before they reach signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V sensor front-ends by limiting voltage to ≤59.3 V during 10/1000 μs surges. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to absorb repetitive inductive spikes without polarity constraints. Use Value: Maintains system uptime by eliminating false triggering and component failure due to >1 kV transients on factory floor wiring. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails and RS-485 data lines in network switches and base stations. IC Role / Device Role / Timing Role: Fast-response voltage limiter between isolated DC-DC output and communication ICs to prevent cross-coupling of transients. Use Value: Ensures immunity to induced lightning surges (IEC 61000-4-5) while adding <1 pF parasitic capacitance to preserve signal integrity. |
Use Scenario: Input-stage overvoltage clamp in AC-DC adapters for smart home hubs and IoT gateways subjected to mains-borne surges. IC Role / Device Role / Timing Role: Primary-level TVS placed after bridge rectifier to suppress differential-mode surges before bulk capacitor and controller IC. Use Value: Enables compact design by replacing bulkier MOV-based solutions while meeting UL 497B recognition for surge protectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same VWM/VBR/VC specs but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump | Select only when space constraints prohibit SMC and surge energy is ≤600 W. |
| 1.5KE43CA | Through-hole TO-218 package; identical electrical specs but slower thermal response and no AEC-Q101 qualification | Not suitable for automated SMT lines or automotive production; requires manual assembly and lacks automotive reliability validation | Choose only for legacy through-hole designs where rework flexibility outweighs volume manufacturing needs. |
Compared with SMBJ43CA and 1.5KE43CA, the 1.5SMC43CAHE3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC package manufacturability - making it the preferred choice for new automotive and industrial SMT designs requiring certified high-energy protection.
Availability
1.5SMC43CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLCs, telecom infrastructure equipment, and consumer power adapters requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC43CAHE3_A/I 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 and application-specific performance.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom applications - engineered for robustness, AEC-Q101 compliance, and seamless integration into automated SMT production lines.
FAQ
What does the "CA" suffix mean in 1.5SMC43CAHE3_A/I?
The "CA" suffix in 1.5SMC43CAHE3_A/I denotes a bidirectional configuration: the device provides symmetrical clamping in both forward and reverse directions, with identical breakdown and clamping characteristics regardless of voltage polarity. This eliminates orientation dependency during PCB placement and supports protection of AC-coupled or floating signal lines - a key distinction from unidirectional "A" variants like 1.5SMC43AHE3_A/I.
Is 1.5SMC43CAHE3_A/I qualified to AEC-Q101?
Yes, 1.5SMC43CAHE3_A/I is fully AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" indicates RoHS-compliant + AEC-Q101 qualification) and documentation (Document Number 88303, Revision 09-Mar-2026). It has passed stress tests including HTGB, HTRB, temperature cycling, and ESD per the AEC-Q101 standard - enabling use in automotive powertrain, chassis, and ADAS systems.
What is the maximum clamping voltage of 1.5SMC43CAHE3_A/I at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC43CAHE3_A/I is 59.3 V, measured at 25.3 A peak pulse current with a 10/1000 μs waveform. This value represents the highest voltage imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream ICs (e.g., microcontrollers, transceivers) remain within absolute maximum ratings.
Does 1.5SMC43CAHE3_A/I have a polarity marking on the package?
No, 1.5SMC43CAHE3_A/I has no polarity marking on the SMC (DO-214AB) package body because it is a bidirectional device. Unlike unidirectional variants (e.g., 1.5SMC43AHE3_A/I), which feature a cathode band, the CA-series uses symmetrical terminal behavior - allowing unrestricted orientation during pick-and-place assembly without functional impact.
What is the thermal resistance junction-to-ambient for 1.5SMC43CAHE3_A/I?
The typical thermal resistance junction-to-ambient (RθJA) for 1.5SMC43CAHE3_A/I is 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad per terminal. This value enables accurate thermal modeling for ambient temperatures up to +125 °C while maintaining TJ ≤ +150 °C under full 1500 W surge duty - essential for reliability in engine bay or industrial control cabinet deployments.
1.5SMC43CAHE3_A/I 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- 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)
1.5SMC43CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC43CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC43CAHE3_A/I 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 1.5SMC43CAHE3_A/I reliable?
The price and inventory of 1.5SMC43CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC43CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC43CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC43CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC43CAHE3_A/I?
1.5SMC43CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC43CAHE3_A/I 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 1.5SMC43CAHE3_A/I?
For technical support, including 1.5SMC43CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC43CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC43CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC43CAHE3_A/I 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 1.5SMC43CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC43CAHE3_A/I?
All 1.5SMC43CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC43CAHE3_A/I, 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 1.5SMC43CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC43CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC43CAHE3_A/I Tags
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ESD9B5.0ST5G
onsemi
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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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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
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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