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Vishay General Semiconductor - Diodes Division SM6T36CAHM3_B/H
- Part No.:
- SM6T36CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T36CAHM3_B/H.pdf
- Description:
- 600W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,868
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Product details
Overview
SM6T36CAHM3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 36 V standoff voltage (VWM), 49.9 V clamping voltage at 12 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It features glass passivated junction, low inductance, and AEC-Q101 qualification for automotive-grade surge protection on signal lines and power rails.
For engineers reviewing the SM6T36CAHM3_B/H datasheet, SM6T36CAHM3_B/H pinout, SM6T36CAHM3_B/H application, or SM6T36CAHM3_B/H equivalent, key selection criteria include bidirectional clamping behavior, 36 V reverse standoff rating, 150 °C max junction temperature, halogen-free RoHS compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix designation, delivering identical breakdown (34.2–37.8 V at 1 mA), clamping (≤49.9 V at 12 A), and leakage (<1.0 μA at 30.8 V) characteristics across polarity. Its low RθJA of 100 °C/W and RθJL of 20 °C/W support thermal reliability under repetitive transients when mounted per recommended pad layout.
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), passes JESD 201 Class 2 whisker testing, and is qualified to AEC-Q101 - confirming suitability for under-hood automotive electronics where ESD and load-dump immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 34.2 V / 37.8 V at 1.0 mA - guaranteed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | 49.9 V at 12.0 A (10/1000 μs) - clamping voltage limiting downstream component stress during surge events |
| PPPM | 600 W - peak transient power handling capacity under standardized 10/1000 μs waveform |
| TJ max | +150 °C - maximum junction temperature enabling operation in high-ambient automotive environments |
| Package | SMB (DO-214AA) - surface-mount outline with 0.220" × 0.130" footprint and 0.086" height for space-constrained PCBs |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, no polarity marking (bidirectional), compliant with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical PN junction - functions as cathode in reverse bias, anode in forward bias |
| Cathode | Terminal K | Other side of symmetrical PN junction - functions identically to Anode under opposite polarity; no band marking |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge waveforms in automotive ECUs |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-207 material requirements for green manufacturing |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 1 kV/ns) due to compact SMB geometry |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without moisture sensitivity risk |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground to shunt transients exceeding 30.8 V. Use Value: Prevents latch-up or damage to 3.3 V/5 V ADC inputs by limiting excursion to ≤49.9 V during 12 V system surges. | Use Scenario: Safeguarding CANH/CANL differential pair in vehicle body control units against ESD and inductive switching noise. IC Role / Device Role / Timing Role: Symmetric TVS pair (one per line) referenced to ground, leveraging bidirectional response for common-mode surge suppression. Use Value: Maintains CAN signal integrity below ISO 11898-2 thresholds while surviving ±25 kV contact ESD per IEC 61000-4-2. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Input-stage protection for 24 V DC wall adapters exposed to lightning-induced surges on AC mains-derived rails. IC Role / Device Role / Timing Role: Primary clamping device across DC input and chassis ground, coordinated with upstream fuse and MOV. Use Value: Limits let-through energy to <10 mJ during 600 W transients, preventing secondary failure of primary-side MOSFETs and controllers. | Use Scenario: Secondary-side protection on Ethernet PHY or DSL line interface cards subjected to induced surges from nearby power cables. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp on low-voltage data lines (e.g., 3.3 V LVDS), placed adjacent to connector. Use Value: Achieves <1 ns response time and <0.5 pF junction capacitance (typ.) to avoid signal distortion at 100 Mbps+ data rates. |
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 | Same VWM (30.8 V) and VC (49.9 V), but lower PPPM = 400 W and larger SMA package (DO-214AC) | Less robust for repeated 600 W surges; requires larger PCB area | Select when cost priority outweighs power margin and board space allows SMA footprint |
| SMCJ36CA | Same VWM/VC, higher PPPM = 1500 W, larger SMC package (DO-214AB) | Over-specified for most 600 W use cases; adds 3× footprint and thermal mass | Choose only when extended surge endurance beyond 1000 pulses is required |
Compared with SMAJ36CA and SMCJ36CA, SM6T36CAHM3_B/H delivers optimal balance of 600 W capability, SMB footprint efficiency, and AEC-Q101 qualification - making it the preferred choice for space-constrained automotive and industrial modules requiring certified reliability without over-engineering.
Availability
SM6T36CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter inputs, and telecom line card protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SM6T36CAHM3_B/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, MOSFETs, and protection devices with emphasis on high-reliability, high-efficiency solutions.
The SM6T Series is designed specifically for robust transient suppression in automotive, industrial, and consumer electronics - combining AEC-Q101 qualification, halogen-free construction, and optimized SMB packaging for automated SMT deployment.
FAQ
What does the "CA" suffix indicate in SM6T36CAHM3_B/H?
The "CA" suffix in SM6T36CAHM3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T36A), SM6T36CAHM3_B/H has no cathode marking and delivers identical breakdown (34.2–37.8 V) and clamping (≤49.9 V) characteristics regardless of voltage polarity applied across its terminals.
Is SM6T36CAHM3_B/H suitable for automotive applications?
Yes, SM6T36CAHM3_B/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials under Vishay's HM3 automotive-grade process. Its 150 °C maximum junction temperature, MSL Level 1 reflow rating, and validation across temperature cycling, HTRB, and ESD tests confirm suitability for under-hood and cabin ECU applications per ISO 16750-2.
What is the clamping voltage of SM6T36CAHM3_B/H at rated peak pulse current?
The clamping voltage of SM6T36CAHM3_B/H is 49.9 V measured at 12.0 A peak pulse current using the standard 10/1000 μs double-exponential waveform. This value ensures downstream ICs and MOSFETs remain within safe operating limits during surge events, provided layout minimizes parasitic inductance per Vishay's recommended 5.0 mm × 5.0 mm copper pad design.
How does the SMB package of SM6T36CAHM3_B/H compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of SM6T36CAHM3_B/H measures 0.220" × 0.130" - smaller than SMA (DO-214AC) and significantly smaller than SMC (DO-214AB). This enables higher board density while maintaining 600 W pulse power handling. Its low-profile geometry also contributes to reduced parasitic inductance, improving response speed for fast transients compared to larger packages.
Does SM6T36CAHM3_B/H require derating at elevated ambient temperatures?
Yes, SM6T36CAHM3_B/H must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its peak pulse power drops to approximately 420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %). Derating ensures junction temperature remains ≤150 °C; proper copper pad area (0.2" × 0.2") and airflow are essential for thermal management in high-temperature deployments.
SM6T36CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- 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):
- 12A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SM6T36CAHM3_B/H FAQ
1.How can I place an order for SM6T36CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T36CAHM3_B/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 SM6T36CAHM3_B/H reliable?
The price and inventory of SM6T36CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T36CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T36CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T36CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T36CAHM3_B/H?
SM6T36CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T36CAHM3_B/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 SM6T36CAHM3_B/H?
For technical support, including SM6T36CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T36CAHM3_B/H requirements.
6.How does Aetrix verify that SM6T36CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T36CAHM3_B/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 SM6T36CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T36CAHM3_B/H?
All SM6T36CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T36CAHM3_B/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 SM6T36CAHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T36CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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