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Vishay General Semiconductor - Diodes Division 1.5SMC36CA-M3/57T
- Part No.:
- 1.5SMC36CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CA-M3/57T.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,421
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Product details
Overview
1.5SMC36CA-M3/57T 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 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC36CA-M3/57T datasheet, 1.5SMC36CA-M3/57T pinout, 1.5SMC36CA-M3/57T application, or 1.5SMC36CA-M3/57T equivalent, this device delivers verified bidirectional clamping performance, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness - critical for ESD and lightning surge immunity in harsh-environment electronics.
Technical Context
The 1.5SMC36CA-M3/57T operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±36 V in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while its SMC (DO-214AB) package supports automated placement and meets MSL level 1 reflow standards up to 260 °C.
It delivers 1500 W peak pulse power handling under standardized 10/1000 μs transients, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation up to 150 °C junction temperature. The device exhibits fast response time (<1.0 ps) and low incremental surge resistance - key for protecting sensitive MOSFETs and ICs from inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - tight tolerance ensures predictable turn-on across production lots |
| VC (Clamping) | 49.9 V at 30.1 A - limits transient voltage seen by downstream components during 10/1000 μs surges |
| PPPM | 1500 W - peak transient energy absorption capability under standard lightning/surge test conditions |
| ID (Leakage) | <1.0 μA at 36 V - negligible standby current avoids loading of high-impedance signal or bias lines |
| TJ max | +150 °C - enables use in under-hood automotive and industrial environments without derating |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient current entry (negative polarity) | Conducts during negative transients; forms one half of symmetrical clamping path |
| Cathode (Terminal 2) | Transient current entry (positive polarity) | Conducts during positive transients; completes bidirectional clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) when properly mounted on 8 mm × 8 mm pads |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising reliability |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced failure risk |
| AEC-Q101 qualification ready | Base P/NHM3 variant available for automotive applications requiring stress-tested TVS devices |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus sensors from load-dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential pair or supply rail to shunt transients before reaching PHY or MCU pins. Use Value: Limits induced voltage to ≤49.9 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding RS-485 transceivers against ESD (IEC 61000-4-2) and surge (IEC 61000-4-5) events in factory automation systems. IC Role / Device Role / Timing Role: Placed between A/B lines and ground to suppress common-mode transients while preserving signal integrity. Use Value: Sub-1 ns response time ensures clamping occurs before transceiver input stages are overstressed, maintaining data link uptime. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
Use Scenario: Front-end surge suppression on DSL or PoE-powered line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS across input power rails (e.g., 48 V DC) to absorb bulk surge energy before upstream regulators. Use Value: 1500 W PPPM rating allows single-device handling of 10/1000 μs 2 kA surges per Telcordia GR-1089-CORE. |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Clamps output rail transients caused by capacitor discharge or regulator fault conditions. Use Value: 36 V VWM aligns with 36–42 V nominal 12 V/24 V adapter outputs, ensuring no false triggering during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load-dump | Select when board space is constrained and surge threat level is ≤600 W (e.g., USB port protection) |
| 1.5KE36CA | Through-hole DO-201 package, identical electrical specs, higher mechanical robustness but no SMT compatibility | Requires wave soldering; not suitable for mixed-technology or fully automated assembly lines | Choose only for legacy repair, prototyping, or high-vibration environments where SMT reliability is unproven |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CA-M3/57T uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and halogen-free compliance - making it the preferred choice for volume automotive and industrial designs requiring AEC-Q101 alignment and automated manufacturing.
Availability
1.5SMC36CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, and telecom line card designs requiring stable component supply, long-term lifecycle support, and consistent halogen-free compliance.
Supply support for 1.5SMC36CA-M3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power transient suppression in compact SMT form factors - targeting design-in in next-generation ADAS sensors, industrial Ethernet nodes, and 5G infrastructure equipment.
FAQ
What does the "CA" suffix indicate in 1.5SMC36CA-M3/57T?
The "CA" suffix in 1.5SMC36CA-M3/57T denotes a bidirectional configuration, meaning the device clamps transient voltages symmetrically in both polarities. Unlike unidirectional variants (e.g., 1.5SMC36A), the 1.5SMC36CA-M3/57T has no cathode band marking and functions identically regardless of PCB orientation - essential for protecting AC-coupled or floating signal paths where polarity is undefined.
Is 1.5SMC36CA-M3/57T AEC-Q101 qualified?
The base part number 1.5SMC36CA-M3/57T is halogen-free and RoHS-compliant but not itself AEC-Q101 qualified. However, Vishay offers the HM3 variant (e.g., 1.5SMC36CAHM3_A/H) which carries full AEC-Q101 qualification for automotive applications. Engineers specifying 1.5SMC36CA-M3/57T should confirm whether their program requires certified qualification or if the M3-grade commercial version meets system-level reliability targets.
What is the maximum clamping voltage of 1.5SMC36CA-M3/57T under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC36CA-M3/57T is 49.9 V, measured at a peak pulse current (IPPM) of 30.1 A using the standard 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88303, Rev. 09-Mar-2026) and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - critical for validating margin against downstream IC absolute maximum ratings.
How does the SMC package of 1.5SMC36CA-M3/57T compare thermally to SMA or SMB packages?
The SMC (DO-214AB) package used by 1.5SMC36CA-M3/57T provides significantly better thermal performance than SMA or SMB: its typical junction-to-ambient thermal resistance (RθJA) is 75 °C/W versus ~100–120 °C/W for SMB/SMA. This allows the 1.5SMC36CA-M3/57T to sustain higher peak power (1500 W) without exceeding 150 °C junction temperature - especially when mounted on 8.0 mm × 8.0 mm copper pads as specified in the datasheet.
Can 1.5SMC36CA-M3/57T be used in place of a unidirectional TVS like 1.5SMC36A?
No - 1.5SMC36CA-M3/57T is strictly bidirectional and cannot replace unidirectional devices like 1.5SMC36A in circuits requiring DC blocking or polarity-specific clamping (e.g., DC power rail protection). While both share identical VWM (36 V) and VC (49.9 V), the unidirectional 1.5SMC36A conducts only during reverse-bias transients and includes a cathode band for orientation. Substituting 1.5SMC36CA-M3/57T in such roles may cause unintended conduction during normal forward bias.
1.5SMC36CA-M3/57T 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC36CA-M3/57T FAQ
1.How can I place an order for 1.5SMC36CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CA-M3/57T 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 1.5SMC36CA-M3/57T reliable?
The price and inventory of 1.5SMC36CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CA-M3/57T?
1.5SMC36CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CA-M3/57T 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 1.5SMC36CA-M3/57T?
For technical support, including 1.5SMC36CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC36CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CA-M3/57T 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 1.5SMC36CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CA-M3/57T?
All 1.5SMC36CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CA-M3/57T, 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 1.5SMC36CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC36CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CA-M3/57T Tags
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