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Vishay General Semiconductor - Diodes Division SM15T36CAHM3_A/H
- Part No.:
- SM15T36CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T36CAHM3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,165
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Product details
Overview
SM15T36CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in 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 A peak pulse current. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T36CAHM3_A/H datasheet, SM15T36CAHM3_A/H pinout, SM15T36CAHM3_A/H application, or SM15T36CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and verified 1500 W surge handling per JEDEC-standard waveform.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its 36 V standoff voltage ensures compatibility with 24 V nominal systems, while clamping at ≤49.9 V under 30 A IPPM limits stress on downstream ICs like CAN transceivers or microcontrollers.
Thermal resistance is characterized at RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), supporting reliable operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum reverse working voltage before leakage exceeds 1 μA; sets upper limit for continuous system bias without conduction. |
| VBR min/max | 34.2 V / 37.8 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 49.9 V at 30 A (10/1000 μs) - Clamping voltage under standardized surge; defines maximum stress imposed on protected circuitry. |
| PPPM | 1500 W - Peak pulse power rating; enables protection against lightning surges (IEC 61000-4-5) and inductive switch-off transients. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in engine control modules and industrial motor drives. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 | Qualified - Validated for automotive applications including sensor interfaces, body control modules, and infotainment power supplies. |
Pinout & Package
SMC (DO-214AB) package with two terminals: no polarity marking for bidirectional operation. Device is symmetric; either terminal may serve as anode or cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Reversible current path; conducts during positive or negative transients exceeding VBR. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing low-inductance clamping loop; no marking required per spec. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus) without polarity concerns. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV line-to-earth) when mounted on 8 mm × 8 mm copper pads per datasheet fig. 2. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC J-STD-208 and EU RoHS Directive 2011/65/EU for green manufacturing. |
| Low clamping ratio (VC/VBR) | 1.46 (49.9 V / 34.2 V) - Minimizes let-through energy and reduces risk of latch-up in protected CMOS ICs. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor output and ground to clamp transients before reaching ADC input or signal conditioner. Use Value: Prevents sensor signal corruption and microcontroller reset by limiting voltage excursions to ≤49.9 V during 30 A surges. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs connected to long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS mounted between A/B lines and ground to suppress common-mode surges induced by nearby motor switching. Use Value: Maintains data integrity under 1 kV/μs fast transients by clamping within 1 ns response time and limiting peak differential stress. |
| Telecom Power Supply Input | Consumer Appliance Motor Control |
|
Use Scenario: Input-stage protection for 24 V DC power supplies in base station remote radio units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS placed across DC input rails to absorb energy before upstream DC-DC converters. Use Value: Absorbs 1500 W surge energy without failure, enabling compliance with ITU-T K.20 and GR-1089-CORE immunity requirements. |
Use Scenario: Overvoltage suppression on half-bridge gate drive lines in smart washing machine motor inverters. IC Role / Device Role / Timing Role: Bidirectional clamp across high-side and low-side MOSFET gates to prevent VGS overstress during shoot-through events. Use Value: Limits gate-source voltage to ≤49.9 V, avoiding oxide breakdown in 600 V MOSFETs during inductive flyback spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower peak pulse power (400 W), same VWM (30.8 V), SMA package (smaller thermal mass). | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy threats like ESD or local switching noise. | Select SMAJ36CA only for space-constrained consumer designs where 1500 W surge immunity is not required. |
| 1.5KE36CA | Higher peak pulse power (1500 W), axial-leaded DO-201 package, higher thermal resistance (RθJA ≈ 100 °C/W). | Requires through-hole assembly and larger PCB area; unsuitable for automated SMT production or high-density layouts. | Choose 1.5KE36CA only for legacy through-hole designs or prototyping where SMC footprint is unavailable. |
Compared with SMAJ36CA and 1.5KE36CA, SM15T36CAHM3_A/H delivers identical clamping performance with superior surge handling in a compact, AEC-Q101-qualified SMT package-enabling automotive-grade reliability without layout or process compromise.
Availability
SM15T36CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom power supply inputs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SM15T36CAHM3_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, and transient protection devices with emphasis on reliability and automotive qualification.
The SM15T Series was designed specifically for high-energy transient suppression in harsh environments-including engine compartments, factory floors, and outdoor telecom infrastructure-where 1500 W surge immunity and AEC-Q101 validation are mandatory.
FAQ
What does the "HM3" suffix indicate in SM15T36CAHM3_A/H?
The HM3 suffix in SM15T36CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JEDEC J-STD-208 and EU RoHS Directive 2011/65/EU, and validates the device for automotive applications including temperature cycling and humidity testing per AEC standard. SM15T36CAHM3_A/H is not merely commercial-grade-it is fully automotive-qualified.
Is SM15T36CAHM3_A/H unidirectional or bidirectional?
SM15T36CAHM3_A/H is a bidirectional TVS, confirmed by the "CA" suffix in its part number. Its electrical characteristics-including breakdown voltage (34.2–37.8 V) and clamping voltage (49.9 V at 30 A)-apply identically in both polarities. No polarity marking appears on the SMC package, reflecting its symmetric conduction behavior during positive or negative transients.
What is the maximum clamping voltage of SM15T36CAHM3_A/H under surge conditions?
The maximum clamping voltage of SM15T36CAHM3_A/H is 49.9 V at 30 A peak pulse current with a 10/1000 μs waveform, as specified in the Vishay datasheet (Document Number: 88380, page 2). This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does SM15T36CAHM3_A/H meet automotive qualification standards?
Yes, SM15T36CAHM3_A/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "ORDERING INFORMATION." The HM3 suffix confirms this qualification, and the device has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge per AEC-Q101 Rev D. SM15T36CAHM3_A/H is approved for use in automotive powertrain and chassis modules.
What is the thermal resistance of SM15T36CAHM3_A/H?
The thermal resistance of SM15T36CAHM3_A/H is RθJA = 75 °C/W (typical, junction-to-ambient) and RθJL = 15 °C/W (typical, junction-to-lead), per the Vishay datasheet (page 2, "THERMAL CHARACTERISTICS"). These values assume mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal and define safe operating limits under continuous and pulsed power dissipation conditions.
SM15T36CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, 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):
- 30A
- 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 (SMC)
SM15T36CAHM3_A/H FAQ
1.How can I place an order for SM15T36CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T36CAHM3_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 SM15T36CAHM3_A/H reliable?
The price and inventory of SM15T36CAHM3_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 SM15T36CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T36CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T36CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T36CAHM3_A/H?
SM15T36CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T36CAHM3_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 SM15T36CAHM3_A/H?
For technical support, including SM15T36CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T36CAHM3_A/H requirements.
6.How does Aetrix verify that SM15T36CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T36CAHM3_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 SM15T36CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T36CAHM3_A/H?
All SM15T36CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T36CAHM3_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 SM15T36CAHM3_A/H part is unused and in its original packaging.
Return procedure for SM15T36CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T36CAHM3_A/H Tags
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