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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHE3/57T
- Part No.:
- 1.5SMC56CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHE3/57T.pdf
- Description:
- TVS DIODE 47.8VWM 77VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,973
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Product details
Overview
1.5SMC56CAHE3/57T 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 a 56 V standoff voltage (VWM), 62.2–68.8 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), and clamps transients to ≤93.6 V at 19.5 A peak pulse current - deployed in automotive sensor signal lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the 1.5SMC56CAHE3/57T datasheet, 1.5SMC56CAHE3/57T pinout, 1.5SMC56CAHE3/57T application, or 1.5SMC56CAHE3/57T equivalent, this device delivers AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.46), MSL Level 1 moisture sensitivity, and RoHS-compliant matte tin terminations - critical for automotive-grade ESD/EFT robustness and automated SMT assembly.
Technical Context
The 1.5SMC56CAHE3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±62.2 V in either polarity without polarity marking. Its glass-passivated junction enables fast response (<1 ns) and stable breakdown under repetitive 10/1000 μs transients at 0.01% duty cycle.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, with maximum junction temperature of +150 °C and derating starting at TA > 25 °C per Figure 2. It supports unidirectional surge current up to 200 A (8.3 ms half-sine) only in unidirectional variants - not applicable to this CA-suffixed bidirectional part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 56 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR (Breakdown Voltage) | 62.2–68.8 V at IT = 1 mA - tight 10.6% tolerance ensures predictable turn-on across production lots. |
| VC (Clamping Voltage) | ≤93.6 V at IPPM = 19.5 A - low clamping ratio (VC/VBR ≈ 1.46) limits stress on downstream ICs like CAN transceivers or ADC front-ends. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - sustains lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) when mounted on 8 mm × 8 mm copper pads. |
| ID (Reverse Leakage) | ≤5 μA at VWM - negligible standby current avoids loading sensitive reference or bias networks. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures without thermal derating penalties. |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control modules, ADAS sensors, and body electronics per stress test requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No functional distinction - either terminal serves as input/output; enables placement flexibility on PCB without orientation check. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 combined wave surges up to 4 kV without degradation when properly heatsinked. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR over 1000+ surge events; eliminates risk of junction oxidation during reflow. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling - reduces manufacturing overhead. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including temperature cycling, HTRB, and surge endurance - eliminates need for additional qualification testing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection fidelity for high-speed interfaces. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Ports |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor signal line and ground, absorbing negative and positive transients before they reach the ADC or signal conditioner. Use Value: Maintains signal integrity under 100 V load dump events while meeting AEC-Q101 lifetime requirements for 15-year vehicle service life. |
Use Scenario: Shielding digital input channels of programmable logic controllers from induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Primary surge suppression element at field-side connector, shunting energy from 24 V DC control lines to chassis ground. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards without external series impedance. |
| Telecom Interface Protection | Consumer Power Adapter Feedback Loop |
Use Scenario: Safeguarding RS-485 transceiver pins in outdoor base station equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to ground, limiting voltage excursion to within transceiver absolute maximum ratings. Use Value: Achieves >4 kV IEC 61000-4-5 immunity with single-device solution, reducing BOM count versus discrete Zener + capacitor approaches. |
Use Scenario: Protecting optocoupler feedback path in isolated AC/DC adapters against secondary-side surge coupling. IC Role / Device Role / Timing Role: Clamping diode across feedback resistor network to prevent overvoltage damage to TL431 or controller IC during output short-circuit recovery. Use Value: Prevents false regulation trips and maintains UL/EN 62368-1 compliance by limiting feedback node voltage to <100 V during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Lower PPPM (600 W), same VWM (58 V), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only | Select when board space is constrained and automotive qualification is unnecessary. |
| 1.5KE56CA | Through-hole DO-15 package, identical electrical specs but incompatible with SMT assembly; higher mounting inductance | Limited to legacy designs or prototyping where reworkability outweighs automation needs | Choose only if existing through-hole infrastructure prohibits SMT adoption. |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package compatibility with high-volume automated assembly - making it the preferred choice for new automotive and industrial designs requiring both performance and process scalability.
Availability
1.5SMC56CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom interface surge suppression requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for 1.5SMC56CAHE3/57T 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, surge robustness, and qualification compliance are non-negotiable.
FAQ
What is the clamping voltage of the 1.5SMC56CAHE3/57T at its rated peak pulse current?
The 1.5SMC56CAHE3/57T clamps to a maximum of 93.6 V at its rated peak pulse current of 19.5 A (10/1000 μs waveform). This value is measured under standardized test conditions with the device mounted on 0.31" × 0.31" copper pads per JEDEC standards, ensuring repeatable performance in production layouts.
Is the 1.5SMC56CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC56CAHE3/57T is AEC-Q101 qualified (indicated by the HE3 suffix) and specifically validated for automotive use cases including engine control units, ADAS sensors, and body electronics. Its construction, thermal performance, and surge endurance meet all required stress tests defined in the AEC-Q101 standard.
Does the 1.5SMC56CAHE3/57T have polarity markings?
No, the 1.5SMC56CAHE3/57T is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) package. Its symmetrical structure allows installation in either orientation - simplifying pick-and-place programming and eliminating orientation-related assembly errors.
What is the maximum operating junction temperature for the 1.5SMC56CAHE3/57T?
The 1.5SMC56CAHE3/57T has a maximum junction temperature (TJ max) of +150 °C, enabling reliable operation in high-ambient environments such as under-hood automotive locations or sealed industrial enclosures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the Vishay datasheet 88303.
How does the 1.5SMC56CAHE3/57T differ from unidirectional variants like 1.5SMC56AHE3/57T?
The 1.5SMC56CAHE3/57T is bidirectional (CA suffix), providing symmetrical clamping for both positive and negative transients, whereas 1.5SMC56AHE3/57T is unidirectional (A suffix) with cathode band marking and only suppresses reverse-polarity surges. The CA version is used where signal lines may experience bipolar transients - e.g., differential buses or AC-coupled interfaces.
1.5SMC56CAHE3/57T 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 19.5A
- 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)
1.5SMC56CAHE3/57T FAQ
1.How can I place an order for 1.5SMC56CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHE3/57T 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 1.5SMC56CAHE3/57T reliable?
The price and inventory of 1.5SMC56CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC56CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHE3/57T?
1.5SMC56CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHE3/57T 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 1.5SMC56CAHE3/57T?
For technical support, including 1.5SMC56CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC56CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHE3/57T 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 1.5SMC56CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHE3/57T?
All 1.5SMC56CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHE3/57T, 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 1.5SMC56CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC56CAHE3/57T Tags
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