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Vishay General Semiconductor - Diodes Division SMBJ13CAHM3_A/H
- Part No.:
- SMBJ13CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CAHM3_A/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ13CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust ESD and surge protection on signal/power lines. It features 13 V standoff voltage (VWM), 14.4–15.9 V breakdown range (VBR at 1 mA), 21.5 V clamping voltage (VC) at 27.9 A peak pulse current, and 600 W peak pulse power (10/1000 µs waveform), deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ13CAHM3_A/H datasheet, SMBJ13CAHM3_A/H pinout, SMBJ13CAHM3_A/H application, or SMBJ13CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, low leakage (<1 µA at 13 V), AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) for board-level reliability under repetitive surge stress.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM, it avalanches into low-impedance conduction to divert surge energy away from downstream ICs. Its bidirectional symmetry enables use on AC-coupled or floating lines without polarity concerns.
It delivers 600 W peak pulse power with 10/1000 µs waveform, supports 150 °C max junction temperature, and exhibits 0.084 %/°C temperature coefficient of VBR. The glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 21.5 V at 27.9 A - Clamped voltage during 600 W surge; determines maximum stress imposed on protected circuitry. |
| IPPM | 27.9 A - Peak surge current capability under 10/1000 µs waveform; validates protection level against IEC 61000-4-5 Level 3/4. |
| PPPM | 600 W - Peak pulse power rating; defines single-event energy handling capacity without degradation. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs derating requirements for sustained surge duty cycles. |
| TJ max | +150 °C - Maximum junction temperature; sets upper limit for ambient + self-heating under worst-case surge repetition. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path. | Connected to line being protected; forms symmetrical clamp path with cathode during either polarity surge. |
| Cathode | Current exit terminal in forward bias; identical functional role to anode in bidirectional operation. | No polarity marking on device body; terminals are electrically interchangeable for AC or floating applications. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal lines without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements up to Level 4 (4 kV/2 Ω) in properly laid-out PCBs. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V/5 V logic and precision analog front-ends. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Industrial Sensor Interface Protection | Telecom Line Surge Suppression |
|---|---|
|
Use Scenario: Protecting RS-485 transceivers and analog sensor outputs (e.g., 4–20 mA loops) from inductive switching transients and lightning-induced surges. IC Role / Device Role: Shunt TVS placed between signal line and ground, clamping transients before they reach the transceiver input stage. Use Value: Limits voltage excursion to ≤21.5 V during 27.9 A surges, preserving transceiver integrity and maintaining communication uptime in factory automation environments. |
Use Scenario: Safeguarding Ethernet PHY interface pins and telephone line cards against ESD (IEC 61000-4-2) and fast transient bursts (IEC 61000-4-4). IC Role / Device Role: Bidirectional clamping element on differential pairs (e.g., TIP/RING), symmetrically suppressing ± surges without polarity constraints. Use Value: Maintains signal integrity under repeated 8 kV contact ESD events while adding <1 pF parasitic capacitance-no data rate degradation in 10/100BASE-TX links. |
| Automotive Body Control Module (BCM) Inputs | Consumer Appliance Motor Drive Feedback Lines |
|
Use Scenario: Guarding microcontroller GPIOs connected to door lock actuators, window switches, and lighting controls against load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary surge suppression component on low-voltage (12 V nominal) control inputs, mounted directly at connector entry point. Use Value: AEC-Q101 qualification ensures survival across -40 °C to +125 °C ambient with validated performance after 1000+ surge cycles-reducing field failure rates in Tier-1 modules. |
Use Scenario: Shielding hall-effect sensor outputs and current-sense amplifier inputs in washing machine motor controllers from commutation noise and back-EMF spikes. IC Role / Device Role: Localized TVS at sensor-to-PCB interface, minimizing trace inductance to achieve sub-1 ns response time. Use Value: 21.5 V clamping prevents latch-up in 3.3 V ADC front-ends while 100 °C/W RθJA allows thermal design within 5 mm² copper pad area-enabling compact, cost-effective appliance PCBs. |
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_A/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same electrical specs and SMB package. | Suitable for commercial/industrial use only; not approved for automotive ECUs or safety-critical modules. | Select when AEC-Q101 is unnecessary and halogen-free material is not mandated by OEM spec. |
| SMAJ13CAHM3_A/H | Lower 400 W PPPM; same VWM/VC but reduced IPPM (19.9 A); SMA (DO-214AC) package with smaller footprint (4.32 mm × 2.62 mm). | Better suited for space-constrained consumer electronics where 400 W surge margin suffices. | Choose when PCB real estate is limited and system-level surge testing confirms 400 W adequacy. |
Compared with SMBJ13CAHM3_A/H, SMBJ13CAHE3_A/H trades automotive qualification for lower cost in non-automotive systems, while SMAJ13CAHM3_A/H sacrifices 33 % peak power handling for 25 % smaller board area-requiring explicit validation of surge margin and layout constraints.
Availability
SMBJ13CAHM3_A/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and automotive body control modules requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMBJ13CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in harsh environments-designed for automotive, industrial, and telecom applications where robustness, repeatable clamping, and long-term stability under surge stress are mandatory.
FAQ
What is the clamping voltage of SMBJ13CAHM3_A/H at its rated peak pulse current?
The SMBJ13CAHM3_A/H has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 27.9 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ13CAHM3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), ensuring consistent protection in demanding thermal environments.
Is SMBJ13CAHM3_A/H suitable for automotive applications?
Yes, SMBJ13CAHM3_A/H is AEC-Q101 qualified, making it suitable for automotive applications including body control modules, infotainment interfaces, and sensor signal conditioning. The HM3 suffix explicitly denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. Its 150 °C maximum junction temperature, validated surge endurance, and MSL Level 1 reflow compatibility meet stringent automotive manufacturing and reliability requirements-confirmed through temperature cycling, humidity bias, and repetitive surge testing per AEC-Q101.
How does the bidirectional nature of SMBJ13CAHM3_A/H affect its placement on a PCB?
The SMBJ13CAHM3_A/H has no polarity marking and functions identically in both directions, so it can be placed without orientation constraints between any two nodes requiring symmetrical overvoltage protection-such as differential signal pairs (RS-485, CAN), AC-coupled lines, or floating sensors. This eliminates risk of incorrect installation during automated assembly and simplifies layout for balanced protection schemes. Unlike unidirectional TVS diodes, the SMBJ13CAHM3_A/H does not require cathode alignment to ground or supply rails, reducing design complexity and BOM variants.
What is the maximum leakage current of SMBJ13CAHM3_A/H at its standoff voltage?
The SMBJ13CAHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its standoff voltage (VWM) of 13 V and ambient temperature of 25 °C. This ultra-low leakage ensures minimal power drain and signal distortion in high-impedance circuits such as sensor bias networks or battery-powered IoT nodes. Leakage remains below 5 µA up to 85 °C, supporting reliable operation in thermally stressed industrial enclosures without compromising measurement accuracy or standby current budgets.
Does SMBJ13CAHM3_A/H require a heatsink for standard surge duty cycles?
No, SMBJ13CAHM3_A/H is designed for surface-mount operation without external heatsinking under typical surge conditions. Its thermal resistance (RθJA = 100 °C/W) assumes mounting on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal-standard for most SMB layouts. For single-event 600 W surges or low-duty-cycle repetitive transients (≤0.01 %), PCB copper acts as sufficient thermal mass. Continuous power dissipation is limited to 5.0 W, but SMBJ13CAHM3_A/H is not intended for steady-state power handling-only transient energy diversion.
SMBJ13CAHM3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SMBJ13CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CAHM3_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 SMBJ13CAHM3_A/H reliable?
The price and inventory of SMBJ13CAHM3_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 SMBJ13CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ13CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CAHM3_A/H?
SMBJ13CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CAHM3_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 SMBJ13CAHM3_A/H?
For technical support, including SMBJ13CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ13CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ13CAHM3_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 SMBJ13CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ13CAHM3_A/H?
All SMBJ13CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CAHM3_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 SMBJ13CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ13CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13CAHM3_A/H Tags
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