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Vishay General Semiconductor - Diodes Division SMCJ13CAHM3_A/I
- Part No.:
- SMCJ13CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13CAHM3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,657
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Product details
Overview
SMCJ13CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 13 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 μs), and 21.5 V maximum clamping voltage (VC) at 69.8 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive, industrial, and telecom systems against inductive switching transients and lightning-induced surges.
For engineers reviewing the SMCJ13CAHM3_A/I datasheet, SMCJ13CAHM3_A/I pinout, SMCJ13CAHM3_A/I application, or SMCJ13CAHM3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), 1500 W surge rating, and SMC package thermal performance under PCB pad derating per JESD22-B102 solderability standards.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds 14.4 V (min VBR) or forward voltage exceeds 3.5 V (at 100 A), it enters avalanche breakdown to shunt surge current away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for unclamped inductive load switching (e.g., solenoids, relays) and ESD-prone interfaces, the SMCJ13CAHM3_A/I delivers symmetrical clamping in both directions - critical for AC-coupled or floating signal lines - and maintains ≤1.0 μA leakage at 13 V standoff, minimizing standby power loss in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal bus systems. |
| VBR (min/max) | 14.4 V / 15.9 V - Breakdown occurs within this range at 1.0 mA test current; ensures predictable turn-on across temperature and process variation. |
| VC @ IPPM | 21.5 V - Clamped voltage at 69.8 A peak pulse current; determines maximum stress imposed on downstream components during worst-case surge. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity designs. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in under-hood automotive environments and enclosed industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal footprint; provides 75 °C/W junction-to-ambient thermal resistance. |
Pinout & Package
SMCJ13CAHM3_A/I uses the standard SMC (DO-214AB) package: a two-terminal, non-polarized surface-mount device with no cathode/anode marking (bidirectional configuration). Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output for transient energy; symmetric structure eliminates polarity concerns in AC or floating circuits. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completes the bidirectional clamping path; requires equal PCB trace impedance to both ends for balanced surge response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and infotainment modules. |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-20 MSL level 1 (260 °C peak reflow) and JESD201 class 2 whisker resistance - suitable for lead-free assembly and green manufacturing. |
| 1500 W peak pulse power | Withstands 4 kV IEC 61000-4-5 combination wave surges without degradation when mounted on 8.0 mm × 8.0 mm copper pads per fig. 2 derating curve. |
| Low clamping ratio (VC/VWM = 1.65) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V supply rails. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and CAN FD nodes connected to 12 V battery rail subject to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between power rail and ground, absorbing >100 A transient currents while limiting rail excursion to ≤21.5 V. Use Value: Prevents latch-up and gate oxide damage in automotive microcontrollers and transceivers during cold-crank and jump-start conditions. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) transient suppressor placed across differential signal pair (e.g., 4–20 mA loop), clamping common-mode spikes without affecting DC accuracy. Use Value: Maintains ±0.1% measurement integrity under 1 kV EFT bursts (IEC 61000-4-4) by limiting voltage overshoot to <22 V on signal paths. |
| Telecom DSL Line Protection | Consumer USB-C Port ESD Protection |
Use Scenario: Safeguarding ADSL/VDSL line drivers and transformers against lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary-level TVS placed at line entry point, conducting >100 A surge current to earth ground before secondary protection stages activate. Use Value: Enables compliance with ITU-T K.20/K.21 surge immunity requirements while preserving signal integrity up to 30 MHz. | Use Scenario: Protecting USB-C CC and VCONN pins in portable chargers and docks against human-body-model (HBM) and IEC 61000-4-2 contact discharge events. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping device with <10 pF junction capacitance, placed adjacent to connector to minimize inductance. Use Value: Limits ESD voltage to <25 V on CC lines during ±15 kV air discharge, preventing false plug detection and port enumeration failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CAHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VC. | Suitable only for lower-energy transients (IEC 61000-4-5 Level 2); not recommended for automotive load dump. | Select when board space is constrained and surge threat level is limited to ESD/EFT only. |
| SMCJ13AHE3_A/I | Unidirectional version; includes cathode band marking; identical VWM, VC, and PPPM but asymmetric conduction. | Required where DC bias polarity is fixed and forward conduction must be blocked (e.g., 12 V supply rail to GND). | Choose for unidirectional power rail protection where reverse leakage tolerance is stricter than bidirectional use cases. |
Compared with SMCJ13CAHM3_A/I, SMAJ13CAHE3_A/I offers reduced surge robustness in a smaller footprint, while SMCJ13AHE3_A/I provides identical clamping performance with directional blocking - making the HM3 variant optimal for AEC-Q101-compliant bidirectional protection where halogen-free compliance and full 1500 W capability are mandatory.
Availability
SMCJ13CAHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line cards, and consumer USB-C power delivery systems requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for SMCJ13CAHM3_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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting design-in for automotive power distribution, industrial automation I/O, and infrastructure equipment demanding MIL-STD or ISO-certified surge resilience.
FAQ
What does the "HM3" suffix indicate in SMCJ13CAHM3_A/I?
The "HM3" suffix in SMCJ13CAHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JEDEC J-STD-20 MSL level 1 (260 °C peak reflow), JESD201 class 2 whisker resistance, and UL 94 V-0 flammability rating - essential for automotive and green manufacturing applications. SMCJ13CAHM3_A/I meets these requirements out-of-the-box without additional screening.
Is SMCJ13CAHM3_A/I suitable for protecting a 12 V automotive power rail?
Yes, SMCJ13CAHM3_A/I is specifically suited for 12 V automotive power rail protection. With a 13 V standoff voltage (VWM) and 21.5 V clamping voltage (VC) at 69.8 A, it safely absorbs load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple while maintaining compatibility with 12 V nominal systems. Its AEC-Q101 qualification and +150 °C TJ max further validate its suitability for under-hood deployment.
How does the bidirectional configuration of SMCJ13CAHM3_A/I affect circuit layout?
The bidirectional configuration of SMCJ13CAHM3_A/I eliminates polarity constraints during placement - no cathode band marking is present, and either terminal functions identically. Layout requires symmetric PCB trace routing and equal copper pad area (8.0 mm × 8.0 mm per terminal) to ensure balanced surge current sharing and avoid impedance mismatch that could skew clamping symmetry. This simplifies layout for AC-coupled or floating signal lines.
What is the maximum allowable printed circuit board pad size for SMCJ13CAHM3_A/I to achieve rated 1500 W performance?
To achieve the full 1500 W peak pulse power rating, SMCJ13CAHM3_A/I must be mounted on minimum recommended copper pads: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, as specified in Figure 2 of the Vishay datasheet 88394. Smaller pads reduce thermal dissipation and require derating - e.g., at 25 °C ambient, power drops to ~1100 W on 5.0 mm × 5.0 mm pads. SMCJ13CAHM3_A/I's thermal resistance (RθJA = 75 °C/W) assumes this pad size.
Can SMCJ13CAHM3_A/I replace SMCJ13AHE3_A/I in an existing design?
No, SMCJ13CAHM3_A/I cannot directly replace SMCJ13AHE3_A/I without design review. While both share identical VWM, VC, and PPPM ratings, SMCJ13AHE3_A/I is unidirectional (cathode-marked) and blocks forward current above ~3.5 V, whereas SMCJ13CAHM3_A/I conducts equally in both directions. Substitution may cause unintended conduction in DC-biased rails. Verify circuit polarity and clamping direction requirements before interchange.
SMCJ13CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- 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)
SMCJ13CAHM3_A/I FAQ
1.How can I place an order for SMCJ13CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13CAHM3_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 SMCJ13CAHM3_A/I reliable?
The price and inventory of SMCJ13CAHM3_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 SMCJ13CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ13CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13CAHM3_A/I?
SMCJ13CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13CAHM3_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 SMCJ13CAHM3_A/I?
For technical support, including SMCJ13CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13CAHM3_A/I requirements.
6.How does Aetrix verify that SMCJ13CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ13CAHM3_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 SMCJ13CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ13CAHM3_A/I?
All SMCJ13CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13CAHM3_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 SMCJ13CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ13CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13CAHM3_A/I Tags
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