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Vishay General Semiconductor - Diodes Division 1.5SMC36CAHM3_A/I
- Part No.:
- 1.5SMC36CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CAHM3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,750
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Product details
Overview
1.5SMC36CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 36 V standoff voltage (VWM), and clamping voltage of 49.9 V at 30.1 A peak pulse current - deployed to protect automotive sensor signal lines and industrial I/O interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC36CAHM3_A/I datasheet, 1.5SMC36CAHM3_A/I pinout, 1.5SMC36CAHM3_A/I application, or 1.5SMC36CAHM3_A/I equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive 0.01% duty cycle conditions - critical for automotive-grade ESD and surge protection design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 34.2 V / 37.8 V at 1 mA), stand-off (VWM = 30.8 V), and clamping (VC = 49.9 V) characteristics in either direction. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response time (<1.0 ns) to transient events.
Thermally, it features RθJL = 15 °C/W (junction-to-leads) and RθJA = 75 °C/W (junction-to-ambient on 8.0 mm × 8.0 mm copper pads), enabling reliable operation up to TJ = +150 °C. The device meets UL 94 V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - Maximum continuous reverse voltage before significant conduction; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 34.2 V to 37.8 V at 1 mA - Voltage at which device enters avalanche; tight tolerance supports predictable turn-on behavior. |
| VC (Clamping) | 49.9 V at 30.1 A (10/1000 μs) - Peak voltage seen by protected circuit during surge; limits stress on downstream ICs/MOSFETs. |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID (Leakage) | <1 μA at VWM - Minimal standby current; avoids loading sensitive analog or low-power signal paths. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive and high-temperature industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated placement and reflow. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Interchangeable terminal; conducts in avalanche during overvoltage in either polarity - no fixed anode/cathode assignment. |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable terminal; completes symmetrical clamping path - enables single-device protection of AC or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces - supports PPAP and long-term reliability requirements. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations (IEC 61249-2-21); HM3 suffix confirms halogen-free molding compound and matte tin plating. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates bake-out prior to reflow, reducing manufacturing cost and process complexity. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 30.1 A - exceeds IEC 61000-4-5 Ed.3 Level 4 (4 kV line-to-line) without degradation. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; minimizes parameter drift in harsh thermal cycling environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal/power rails to shunt surge energy before reaching interface ICs. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while limiting rail voltage to ≤49.9 V - preventing latch-up or permanent damage to 3.3 V/5 V receivers. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against field-wiring induced surges and ground potential differences. IC Role / Device Role / Timing Role: Primary transient suppressor mounted at connector entry point to absorb >1 kV fast-rising transients before propagation into logic circuitry. Use Value: Clamps 30.1 A surge within <1 ns, holding protected node below 50 V - preserving data integrity and enabling uninterrupted communication during factory ESD events. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed across DC output rails to prevent overvoltage damage to downstream DC-DC converters and microcontrollers. Use Value: Withstands repetitive 1500 W surges without parameter shift - extends adapter lifespan in regions with unstable grid quality (e.g., >1.5 kV ring wave immunity). |
Use Scenario: Protecting Ethernet PHYs and POTS line drivers from lightning-induced longitudinal surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Bidirectional front-end suppressor in hybrid coupler circuits to divert common-mode energy before transformer isolation. Use Value: Symmetric clamping ensures equal protection on tip/ring pairs; 49.9 V VC prevents saturation of line driver amplifiers during 10/700 μs telecom 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 |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W is required. | Select when board space is constrained and surge threat level is ≤1 kV; verify thermal derating at 85 °C ambient. |
| 1.5KE36CA | Through-hole TO-204AA (DO-201AE), identical electrical specs but larger size and manual assembly requirement | Used in legacy industrial power supplies and telecom chassis where automated SMT is unavailable or mechanical robustness is prioritized. | Choose for repairability, high-vibration environments, or prototyping with breadboard compatibility - not for new SMT designs. |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CAHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and 1500 W surge capacity in a compact SMC package - making it the only option qualified for volume production in automotive sensor modules requiring zero rework and full regulatory traceability.
Availability
1.5SMC36CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, consumer power adapters, and telecom line cards requiring stable component supply with full AEC-Q101 documentation and halogen-free compliance.
Supply support for 1.5SMC36CAHM3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in space-constrained and thermally demanding applications - emphasizing AEC-Q101 qualification, repeatable clamping, and automated manufacturability.
FAQ
What does the "HM3" suffix indicate in 1.5SMC36CAHM3_A/I?
The HM3 suffix in 1.5SMC36CAHM3_A/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads and JESD201 Class 2 whisker resistance. It also signifies AEC-Q101 qualification for automotive use, distinguishing it from commercial-grade E3/M3 variants. This makes 1.5SMC36CAHM3_A/I suitable for under-hood and safety-critical applications where material compliance and long-term reliability are mandatory.
Is 1.5SMC36CAHM3_A/I bidirectional, and how does that affect its placement on a PCB?
Yes, 1.5SMC36CAHM3_A/I is a bidirectional TVS diode - meaning it provides identical clamping performance in both polarities with no cathode band marking. This allows placement across AC-coupled lines, differential buses (e.g., CAN, RS-485), or ungrounded power rails without orientation concerns. Its symmetry simplifies layout and eliminates risk of reverse installation during automated assembly.
What is the maximum clamping voltage of 1.5SMC36CAHM3_A/I, and under what test condition is it specified?
The maximum clamping voltage of 1.5SMC36CAHM3_A/I is 49.9 V, measured at a peak pulse current (IPPM) of 30.1 A using the standardized 10/1000 μs double-exponential waveform. This value represents the worst-case voltage imposed on the protected circuit during a surge event and is guaranteed across the full operating temperature range (−65 °C to +150 °C).
Does 1.5SMC36CAHM3_A/I require derating at elevated ambient temperatures?
Yes, 1.5SMC36CAHM3_A/I must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document 88303). At 85 °C ambient, its 1500 W peak pulse power rating drops to approximately 750 W - meaning the maximum sustainable IPPM reduces to ~21 A. Designers must apply this derating when sizing for sustained high-temperature environments like automotive engine compartments.
How does the SMC (DO-214AB) package of 1.5SMC36CAHM3_A/I compare to SMA or SMB in terms of surge handling?
The SMC package of 1.5SMC36CAHM3_A/I offers significantly higher surge capability than SMA (DO-214AC) or SMB (DO-214AA): its larger copper pad area (8.0 mm × 8.0 mm) lowers thermal resistance (RθJA = 75 °C/W vs. ~110 °C/W for SMB), enabling full 1500 W dissipation. This makes 1.5SMC36CAHM3_A/I the preferred choice over smaller packages when protecting against high-energy transients like ISO 7637-2 Pulse 5a.
1.5SMC36CAHM3_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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC36CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC36CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CAHM3_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 1.5SMC36CAHM3_A/I reliable?
The price and inventory of 1.5SMC36CAHM3_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 1.5SMC36CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CAHM3_A/I?
1.5SMC36CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CAHM3_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 1.5SMC36CAHM3_A/I?
For technical support, including 1.5SMC36CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC36CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CAHM3_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 1.5SMC36CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CAHM3_A/I?
All 1.5SMC36CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CAHM3_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 1.5SMC36CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC36CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CAHM3_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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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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