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Vishay General Semiconductor - Diodes Division SMBJ13CAHM3/H
- Part No.:
- SMBJ13CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CAHM3/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,206
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Product details
Overview
SMBJ13CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection on signal and power lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown range (VBR at 1 mA), 21.5 V maximum clamping voltage (VC) at 27.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive ECUs.
For engineers reviewing the SMBJ13CAHM3/H datasheet, SMBJ13CAHM3/H pinout, SMBJ13CAHM3/H application, or SMBJ13CAHM3/H equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise voltage limiting during fast-rising ESD or lightning-induced surges.
The device complies with ANSI/IEEE C62.35 standards and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. With TJ max = 150 °C and -55 °C to +150 °C operating range, it supports under-hood automotive and industrial environments where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 14.4 V / 15.9 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature leakage. |
| VC @ IPPM | 21.5 V at 27.9 A - Clamped voltage seen by protected circuit during 600 W 10/1000 µs surge; limits downstream stress. |
| PPPM | 600 W - Peak pulse power handling capacity with 0.01% duty cycle; validates suitability for repetitive surge events. |
| IPPM | 27.9 A - Peak surge current capability under standardized 10/1000 µs waveform; determines minimum series impedance required. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs board-level thermal design. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in high-ambient environments like engine control units. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity: unmarked - bidirectional symmetry means no anode/cathode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as conduction path depending on transient polarity; no marking required per spec. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical structure enables polarity-agnostic placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating signal lines. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - supports PPAP and long-term reliability requirements. |
| Halogen-free & RoHS | HM3 suffix denotes halogen-free molding compound and RoHS compliance - satisfies environmental mandates for global OEMs and industrial equipment. |
| MSL Level 1 | Rated for unlimited floor life at ≤30 °C/60% RH and withstands 260 °C peak reflow - simplifies SMT assembly without dry-pack or baking. |
| Low clamping ratio | VC/VWM = 1.65 - tight ratio ensures minimal overvoltage exposure to protected ICs during surge events. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines or single-ended sensor outputs. Use Value: Limits transient voltage to ≤21.5 V during 27.9 A surges, preserving transceiver integrity without adding signal distortion or latency. |
Use Scenario: Safeguarding RS-485/CAN FD physical layer ICs against ESD (IEC 61000-4-2) and burst noise (IEC 61000-4-4) in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between CAN_H/CAN_L and ground to shunt common-mode transients. Use Value: Maintains signal integrity with <1 pF junction capacitance at zero bias while clamping surges within 1 ns response time. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
|
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of wall adapters subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor to absorb energy before reaching downstream regulators or USB ports. Use Value: Absorbs 600 W peak pulses without degradation, enabling compact adapter designs compliant with UL 62368-1 surge immunity. |
Use Scenario: Primary protection on twisted-pair DSL line cards exposed to induced surges from nearby power lines or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional clamp installed between tip/ring and ground to divert longitudinal mode transients. Use Value: Withstands repeated 10/1000 µs surges up to 27.9 A while maintaining VWM = 13 V to avoid interfering with 12 V nominal line signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CAHE3/H | Same electrical specs but RoHS-compliant (non-halogen-free) construction; lacks JESD201 Class 2 whisker test certification. | Approved for commercial-grade industrial use but not automotive AEC-Q101 programs requiring HM3 traceability. | Select HE3/H when halogen content is unrestricted and cost optimization is prioritized over automotive qualification. |
| SMAJ13CAHM3 | Lower 400 W PPPM, higher VC = 23.2 V at 19.9 A, SMA (DO-214AC) package with smaller footprint and lower thermal mass. | Suitable for space-constrained consumer PCBs but insufficient for 600 W surge requirements in automotive or telecom infrastructure. | Choose SMAJ13CAHM3 only for non-critical, low-energy applications where board area is more constrained than surge margin. |
Compared with SMBJ13CAHE3/H, the SMBJ13CAHM3/H adds halogen-free compliance and AEC-Q101 validation without sacrificing clamping performance; versus SMAJ13CAHM3, it delivers 50% higher surge power handling and tighter thermal management via larger SMB package - making it the preferred choice for mission-critical automotive and industrial deployments.
Availability
SMBJ13CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial CAN bus interface protection, and telecom DSL line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMBJ13CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMBJ series was engineered specifically for high-power transient suppression in harsh environments, combining AEC-Q101 qualification, halogen-free materials, and industry-standard DO-214AA packaging to meet Tier 1 automotive and industrial safety standards.
FAQ
What does the 'HM3' suffix indicate in SMBJ13CAHM3/H?
The 'HM3' suffix in SMBJ13CAHM3/H specifies halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and AEC-Q101 qualification. It distinguishes this variant from HE3 (RoHS but not halogen-free) and confirms compliance with automotive and green electronics mandates - critical for OEM approvals and export documentation.
Is SMBJ13CAHM3/H suitable for protecting CAN FD bus lines?
Yes, SMBJ13CAHM3/H is suitable for CAN FD bus protection due to its bidirectional symmetry, 21.5 V clamping voltage at 27.9 A, and sub-nanosecond response time. Its VWM = 13 V aligns with typical CAN FD common-mode voltage ranges, and the SMB package provides adequate thermal dissipation for repetitive surge events defined in ISO 11898-2.
How does SMBJ13CAHM3/H differ from unidirectional SMBJ13A variants?
SMBJ13CAHM3/H is bidirectional with identical clamping in both polarities and no polarity marking, whereas SMBJ13A is unidirectional with cathode band identification and forward conduction capability. The 'CA' suffix confirms bidirectional operation - essential for AC-coupled or floating signal paths where transient polarity is unpredictable.
What is the maximum allowable PCB pad size for optimal thermal performance of SMBJ13CAHM3/H?
For optimal thermal performance, SMBJ13CAHM3/H should be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Larger copper areas improve heat spreading and reduce RθJA below the rated 100 °C/W, extending surge endurance and enabling higher ambient operation in sealed enclosures.
Does SMBJ13CAHM3/H require derating at elevated ambient temperatures?
Yes, SMBJ13CAHM3/H requires derating above TA = 25 °C per Figure 2 in the Vishay datasheet: peak pulse power decreases linearly to 50% at 125 °C ambient. At 100 °C ambient, PPPM is reduced to ~70% of 600 W (≈420 W), necessitating adjusted surge margin calculations for high-temperature applications like under-dash automotive modules.
SMBJ13CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 27.9A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ13CAHM3/H FAQ
1.How can I place an order for SMBJ13CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CAHM3/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 SMBJ13CAHM3/H reliable?
The price and inventory of SMBJ13CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ13CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CAHM3/H?
SMBJ13CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CAHM3/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 SMBJ13CAHM3/H?
For technical support, including SMBJ13CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CAHM3/H requirements.
6.How does Aetrix verify that SMBJ13CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ13CAHM3/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 SMBJ13CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ13CAHM3/H?
All SMBJ13CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CAHM3/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 SMBJ13CAHM3/H part is unused and in its original packaging.
Return procedure for SMBJ13CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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