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Vishay General Semiconductor - Diodes Division SMA5J12CHE3/61
- Part No.:
- SMA5J12CHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J12CHE3/61.pdf
- Description:
- TVS DIODE 12VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
SMA5J12CHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 12 V standoff voltage (VWM), 13.3–14.7 V breakdown voltage (VBR) at 1 mA, 19.9 V clamping voltage (VC) at 25.1 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used in automotive power supply input stages to protect downstream MOSFETs and microcontrollers.
For engineers reviewing the SMA5J12CHE3/61 datasheet, SMA5J12CHE3/61 pinout, SMA5J12CHE3/61 application, or SMA5J12CHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C junction temperature rating, RoHS-compliant HE3 suffix, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (≤1 µA leakage at 12 V), but conducts heavily when transient voltage exceeds VBR, limiting the protected node to ≤19.9 V during a 25.1 A 10/1000 µs surge. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount use in space-constrained automotive ECUs and industrial controllers, the device meets MSL Level 1 (260 °C reflow peak), supports 40 A non-repetitive forward surge (IFSM), and delivers thermal resistance of 25 °C/W junction-to-lead - enabling reliable operation without external heatsinking under defined PCB layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 13.3 V / 14.7 V at 1 mA - guaranteed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | 19.9 V at 25.1 A - clamped voltage during full-rated 500 W transient, directly limiting stress on protected ICs |
| PPPM | 500 W - peak pulse power handling per 10/1000 µs waveform, defining surge energy capacity |
| TJ max | +150 °C - maximum junction temperature, enabling use in under-hood automotive environments |
| Polarity | Unidirectional - cathode band marked; blocks forward current until VBR exceeded in reverse bias |
| Qualification | AEC-Q101 qualified - validated for automotive electronic systems requiring reliability under thermal cycling and humidity |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased voltage sensing terminal | Connected to protected line (e.g., 12 V battery rail); conduction initiates when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable, repeatable VBR over lifetime and temperature; eliminates parameter drift due to moisture ingress |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock testing |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision beyond VC specification |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without baking or special handling |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance, ensuring long-term solder joint integrity in vibration-prone applications |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECU power input subjected to load dump (ISO 7637-2 Pulse 5a) and jump-start surges. IC Role / Device Role: Unidirectional shunt TVS placed between VIN and GND, upstream of DC-DC converter. Use Value: Clamps transients to ≤19.9 V, preventing damage to 36 V-rated input stages of buck controllers and MCU power supplies. | Use Scenario: Analog sensor output (e.g., pressure transducer) routed across noisy motor drive zones in factory automation. IC Role / Device Role: Low-capacitance unidirectional TVS on signal line referenced to local ground. Use Value: Limits induced ESD and switching noise to <20 V, preserving ADC accuracy and avoiding comparator false triggering. |
| Consumer Power Adapter Surge Suppression | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side 12 V output of wall adapter exposed to AC line transients coupled through transformer leakage. IC Role / Device Role: Final-stage TVS on regulated output rail before USB or logic interface. Use Value: Absorbs 500 W surges without degradation, maintaining safe voltage for connected peripherals per IEC 61000-4-5 Level 3. | Use Scenario: -48 V DC feeder line powering remote radio units in cellular base stations. IC Role / Device Role: Unidirectional TVS on positive rail relative to system ground, rated for telecom-grade lightning immunity. Use Value: Withstands repeated 10/1000 µs surges up to 25.1 A while maintaining <20 V clamping, meeting GR-1089-CORE requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J12A-E3/61 | Commercial-grade (non-AEC-Q101), same electrical specs and DO-214AC package | Lacks automotive qualification; suitable for consumer/industrial designs without automotive reliability mandates | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMC5J12AHE3/61 | Same electrical specs but in larger DO-214AB (SMC) package; higher thermal mass and RθJA = 35 °C/W vs. 80 °C/W | Better sustained surge handling in high-temperature ambient; requires larger PCB footprint | Select when board layout allows larger package and thermal derating margin is critical |
Compared with SMA5J12A-E3/61, the SMA5J12CHE3/61 adds AEC-Q101 validation for automotive use; compared with SMC5J12AHE3/61, it trades thermal robustness for compact DO-214AC footprint - making SMA5J12CHE3/61 optimal for space-constrained, automotive-qualified 12 V rail protection.
Availability
SMA5J12CHE3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power distribution systems requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for SMA5J12CHE3/61 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 density, and automotive qualification.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where compact size and AEC-Q101 validation are mandatory.
FAQ
What is the polarity configuration of the SMA5J12CHE3/61?
The SMA5J12CHE3/61 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the DO-214AC package body, and it conducts only when reverse-biased above its breakdown voltage. This polarity enables precise clamping on positive-rail protection schemes, such as 12 V battery inputs in automotive ECUs, and distinguishes it from bi-directional variants like SMA5J12CA.
Does the SMA5J12CHE3/61 meet automotive qualification standards?
Yes, the SMA5J12CHE3/61 is AEC-Q101 qualified, as confirmed by Vishay's documentation and the "HE3" suffix designation. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is critical. The SMA5J12CHE3/61 is explicitly intended for such applications.
What is the maximum clamping voltage of the SMA5J12CHE3/61 during a surge event?
The SMA5J12CHE3/61 has a maximum clamping voltage (VC) of 19.9 V at its rated peak pulse current (IPPM) of 25.1 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on the protected circuit during full-rated surge events, ensuring downstream components like 36 V-input DC-DC converters or 5 V LDOs remain within safe operating margins. The clamping performance is guaranteed across the full operating temperature range.
How does the HE3 suffix differ from the E3 suffix in SMA5J12CHE3/61?
The HE3 suffix in SMA5J12CHE3/61 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance and JESD 201 Class 1A whisker resistance only. The "H" prefix explicitly signals automotive-grade reliability validation, including extended temperature cycling and humidity testing - a distinction critical for automotive Tier 1 suppliers requiring documented qualification evidence. The SMA5J12CHE3/61 is built to this higher reliability tier.
What PCB layout guidance applies to the SMA5J12CHE3/61 for optimal thermal performance?
Vishay specifies that the SMA5J12CHE3/61 must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and 25.1 A surge current. Smaller pads increase thermal resistance and cause premature failure under surge conditions. Trace width and internal layer copper pour should also be maximized to sustain junction temperature below +150 °C during repetitive events - especially important in automotive engine-control modules where ambient temperatures exceed 105 °C.
SMA5J12CHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 22.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J12CHE3/61 FAQ
1.How can I place an order for SMA5J12CHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J12CHE3/61 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 SMA5J12CHE3/61 reliable?
The price and inventory of SMA5J12CHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J12CHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J12CHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J12CHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J12CHE3/61?
SMA5J12CHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J12CHE3/61 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 SMA5J12CHE3/61?
For technical support, including SMA5J12CHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J12CHE3/61 requirements.
6.How does Aetrix verify that SMA5J12CHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J12CHE3/61 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 SMA5J12CHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J12CHE3/61?
All SMA5J12CHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J12CHE3/61, 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 SMA5J12CHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J12CHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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