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Vishay General Semiconductor - Diodes Division SMCJ16CAHM3/H
- Part No.:
- SMCJ16CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16CAHM3/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,203
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Product details
Overview
SMCJ16CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 57.7 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ16CAHM3/H datasheet, SMCJ16CAHM3/H pinout, SMCJ16CAHM3/H application, or SMCJ16CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, halogen-free RoHS compliance (HM3 suffix), and thermal resistance (RθJA = 75 °C/W) for board-level surge resilience in harsh environments.
Technical Context
This TVS diode operates as a voltage-clamping device across two terminals, responding to transient overvoltages in both polarities without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior, low incremental surge resistance, and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL level 1 per J-STD-020 (260 °C peak reflow), and is qualified to AEC-Q101 - confirming suitability for automotive under-hood and chassis-mounted electronics where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse working voltage before clamping activation; defines safe operating range for protected circuitry. |
| VBR min/max | 17.8 V / 19.7 V at IT = 1 mA - verified breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 26.0 V at 57.7 A - clamping voltage under 10/1000 μs surge; determines worst-case voltage seen by downstream ICs. |
| PPPM | 1500 W - peak pulse power handling capacity; supports high-energy transients like ISO 7637-2 Pulse 5a. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; informs derating requirements on standard PCB copper pads (8 mm × 8 mm). |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - surface-mount package with 2.06 mm height and 7.75 mm body length; compatible with automated placement and reflow. |
Pinout & Package
SMCJ16CAHM3/H uses a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with bidirectional functionality. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker test requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One side of symmetrical clamping path; conducts during negative-going surges relative to cathode reference. |
| Cathode | Transient current entry (positive polarity) | Other side of symmetrical clamping path; conducts during positive-going surges - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance mandates for Tier 1 automotive supply chains and industrial export markets. |
| Low incremental surge resistance | Enables tighter clamping voltage window and reduced let-through energy during fast-rising transients. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - simplifies manufacturing logistics. |
| Glass passivated junction | Ensures long-term stability of breakdown characteristics and resistance to humidity-induced parameter drift. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontrollers and CAN transceivers in vehicle body control modules from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power input and local regulator, absorbing up to 1500 W transient energy without failure. Use Value: Prevents latch-up or permanent damage to downstream ICs during ISO 16750-2 load dump events (up to 35 V, 400 ms), leveraging 16 V VWM and 26.0 V VC. | Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation PLCs from ESD and relay-coil flyback. IC Role / Device Role / Timing Role: Two-terminal shunt protector across differential signal pair or single-ended sensor supply line. Use Value: Limits transient voltage to ≤26.0 V within nanoseconds, preserving ADC accuracy and preventing false triggering in 24 V industrial I/O systems. |
| Telecom Line Surge Suppression | Consumer Device USB/Power Port Protection |
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary clamping device on DC bias rail feeding magnetics or isolated DC/DC converter. Use Value: Withstands 1500 W peak pulse energy per IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs), maintaining system uptime in outdoor telecom cabinets. | Use Scenario: Adding secondary overvoltage protection on 5 V USB-C power delivery paths in smart home hubs and portable displays. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed after primary fuse and upstream of USB PD controller. Use Value: Clamps fast ESD events (IEC 61000-4-2 ±15 kV contact) to <26.0 V while surviving repeated 10/1000 μs surges up to 57.7 A - extending field lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-E3/61 | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W), non-AEC-Q101 | Suitable for cost-sensitive consumer PCBs with lower surge threat levels; not qualified for automotive use. | Select when space-constrained layouts prioritize size over surge rating and automotive qualification is unnecessary. |
| SMCJ16CAHE3_A/H | Same electrical specs and AEC-Q101 qualification, but RoHS-compliant commercial grade (E3) instead of halogen-free (HM3) | Acceptable for non-automotive industrial applications where halogen-free mandate does not apply. | Choose when halogen-free compliance is not required and E3-grade sourcing offers better lead time or cost. |
Compared with SMCJ16CAHM3/H, SMAJ16CA-E3/61 trades surge robustness and automotive qualification for smaller size and lower cost, while SMCJ16CAHE3_A/H retains full performance but omits halogen-free material compliance - making SMCJ16CAHM3/H the optimal choice for AEC-Q101 + halogen-free dual-mandate designs.
Availability
SMCJ16CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom infrastructure projects requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for SMCJ16CAHM3/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 reliability, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and lightning surges is mission-critical.
FAQ
What does the 'HM3' suffix indicate in SMCJ16CAHM3/H?
The 'HM3' suffix in SMCJ16CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive environmental standards and material restrictions, distinguishing it from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS) variants. This makes SMCJ16CAHM3/H suitable for Tier 1 automotive supply chains requiring halogen-free materials.
Is SMCJ16CAHM3/H bidirectional, and how is polarity identified?
Yes, SMCJ16CAHM3/H is a bidirectional TVS diode - meaning it clamps overvoltage transients equally in both directions. Unlike unidirectional versions, it has no cathode band marking; the device functions identically regardless of terminal orientation. This eliminates assembly errors and simplifies layout for symmetric protection schemes on AC-coupled or floating signal lines.
What is the maximum clamping voltage of SMCJ16CAHM3/H, and under what test condition?
The maximum clamping voltage (VC) of SMCJ16CAHM3/H is 26.0 V, measured at 57.7 A peak pulse current (IPPM) using a 10/1000 μs double-exponential waveform. This value represents the worst-case voltage imposed on protected circuitry during a standardized surge event and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Can SMCJ16CAHM3/H be used in place of a unidirectional SMCJ16A variant?
No - SMCJ16CAHM3/H is strictly bidirectional and cannot replace unidirectional SMCJ16A in circuits requiring DC polarity awareness, such as DC power rail protection with defined anode/cathode orientation. Substitution would eliminate intended forward conduction blocking and risk improper clamping behavior. Always verify circuit polarity requirements before selecting CA (bidirectional) vs. A (unidirectional) variants.
What PCB pad layout is recommended for optimal thermal performance of SMCJ16CAHM3/H?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for SMCJ16CAHM3/H to achieve rated power dissipation and thermal resistance (RθJA = 75 °C/W). Using smaller pads increases junction temperature and requires derating per Figure 2 in the datasheet - especially critical in automotive under-hood applications where ambient temperatures exceed 85 °C.
SMCJ16CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 57.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ16CAHM3/H FAQ
1.How can I place an order for SMCJ16CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16CAHM3/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 SMCJ16CAHM3/H reliable?
The price and inventory of SMCJ16CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ16CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16CAHM3/H?
SMCJ16CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16CAHM3/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 SMCJ16CAHM3/H?
For technical support, including SMCJ16CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16CAHM3/H requirements.
6.How does Aetrix verify that SMCJ16CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ16CAHM3/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 SMCJ16CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ16CAHM3/H?
All SMCJ16CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16CAHM3/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 SMCJ16CAHM3/H part is unused and in its original packaging.
Return procedure for SMCJ16CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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