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Vishay General Semiconductor - Diodes Division TPSMA10AHM3_B/H
- Part No.:
- TPSMA10AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA10AHM3_B/H.pdf
- Description:
- TVS DIODE 8.65VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMA10AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features 10.0 V nominal breakdown voltage (VBR), 8.65 V stand-off voltage (VWM), 27.6 V maximum clamping voltage (VC) at 14.5 A peak pulse current, 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the TPSMA10AHM3_B/H datasheet, TPSMA10AHM3_B/H pinout, TPSMA10AHM3_B/H application, or TPSMA10AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 1.0 W steady-state power dissipation, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and excellent clamping capability with sub-nanosecond response time. Its junction passivation enables stable operation up to TJ = 185 °C, supporting high-reliability automotive and industrial environments where thermal derating must be minimized.
The device is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a typical VBR temperature coefficient of +0.064 %/°C, enabling predictable voltage shift across operating temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 9.50 / 10.0 / 10.50 V at 1.0 mA - defines precise voltage threshold at which avalanche conduction begins, critical for accurate overvoltage detection. |
| VWM | 8.65 V - maximum continuous reverse working voltage before leakage exceeds 5.0 µA; sets safe operating margin below clamping onset. |
| VC @ IPPM | 27.6 V at 14.5 A - clamped voltage during 400 W transient, directly limiting stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity; determines survivability against ISO 7637-2 Pulse 1/2a/5a transients. |
| TJ max. | 185 °C - enables placement near hot components (e.g., power MOSFETs, DC-DC converters) without derating penalties in engine control units. |
| Polarity | Unidirectional - protects only against positive transients on anode-to-cathode bias; requires correct orientation in series with protected line. |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.157" footprint, compatible with automated pick-and-place and reflow profiles up to 260 °C (MSL Level 1). |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case meeting UL 94 V-0. Cathode indicated by color band. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point during positive overvoltage events | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when VANODE–CATHODE > VBR. |
| Cathode | Transient current return path to reference (GND or low-impedance plane) | Must be routed to low-inductance ground plane; voltage rise here directly impacts clamping effectiveness. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for powertrain and body electronics. |
| Halogen-free & RoHS-compliant | Meets automotive material restrictions (e.g., VW 80101) and global environmental regulations without compromising surge robustness. |
| 185 °C junction rating | Enables use in under-hood applications (e.g., battery management sensors) without thermal shutdown or parameter drift. |
| Low VC/VBR ratio (2.76) | Minimizes let-through voltage during clamping - critical for protecting 3.3 V or 5 V logic interfaces powered from higher-voltage rails. |
| MSL Level 1 (260 °C peak) | Eliminates bake requirements prior to assembly; supports standard lead-free reflow profiles without moisture-induced damage. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in vehicle ECUs. IC Role / Device Role: Unidirectional TVS placed between sensor output line and chassis ground to clamp transients before reaching precision amplifier inputs. Use Value: Maintains signal integrity under ISO 16750-2 Pulse 5a (75 V/300 ms) while surviving >1000 surges due to 185 °C thermal stability. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role: Primary overvoltage clamp on dry-contact input lines, positioned upstream of optocoupler input circuitry. Use Value: Limits clamped voltage to 27.6 V, ensuring optocoupler LED remains within safe forward voltage range and avoids latch-up. |
| Power Supply Rail Clamping | Telecom Line Interface Protection |
|
Use Scenario: Secondary surge suppression on 12 V/24 V DC-DC converter outputs feeding sensitive communication ICs in base stations. IC Role / Device Role: Fast-response TVS paralleled with bulk capacitance to absorb residual transients escaping primary MOV-based front-end protection. Use Value: Sub-1 ns response time captures fast-rising edges missed by slower protectors, reducing risk of latch-up in PMICs and USB controllers. |
Use Scenario: Protecting RS-485 transceiver data lines in outdoor telecom cabinets exposed to lightning-induced surges on long cable runs. IC Role / Device Role: Unidirectional TVS on each differential pair (A/B), referenced to local ground, to shunt common-mode transients. Use Value: 400 W peak power rating handles IEC 61000-4-5 Level 4 (4 kV) surges without degradation, validated per AEC-Q101 stress conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A (ON Semiconductor) | Same VBR (10.0 V), but SMB package (DO-214AA); 600 W PPPM; no AEC-Q101 qualification in standard grade | Higher surge rating suits less thermally constrained PCB layouts; lacks automotive qualification unless specified SMBJ10AHE3 | Select if higher peak power is needed and AEC-Q101 is not mandatory; verify board space compatibility with larger SMB outline. |
| TPSMA10AHE3_B/H (Vishay) | Identical electrical specs and SMA package, but HE3 suffix: RoHS-compliant and AEC-Q101 qualified, not halogen-free | Acceptable for automotive use where halogen content is unrestricted (e.g., non-passenger cabin modules) | Choose when halogen-free requirement is waived; otherwise TPSMA10AHM3_B/H is preferred for full automotive material compliance. |
Compared with SMBJ10A and TPSMA10AHE3_B/H, the TPSMA10AHM3_B/H uniquely combines halogen-free construction, AEC-Q101 qualification, and SMA footprint - making it optimal for space-constrained, environmentally regulated automotive and industrial designs requiring zero compromise on reliability or compliance.
Availability
TPSMA10AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMA10AHM3_B/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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The TPSMA10AHM3_B/H belongs to Vishay's PAR® (Precision Avalanche Regulator) TVS family, engineered specifically for robust transient suppression in harsh thermal and electrical environments - targeting automotive powertrain, ADAS, and industrial automation systems.
FAQ
What does the "HM3" suffix mean in TPSMA10AHM3_B/H?
The HM3 suffix in TPSMA10AHM3_B/H indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Unlike HE3 variants, HM3 meets stringent automotive material requirements including VW 80101 and GMW3172 for halogen content, while maintaining identical electrical performance and SMA (DO-214AC) packaging as the TPSMA10AHM3_B/H device.
Is TPSMA10AHM3_B/H suitable for bidirectional transient protection?
No, TPSMA10AHM3_B/H is unidirectional only - it clamps positive transients relative to cathode (i.e., anode-to-cathode voltage exceeding VBR). For bidirectional protection, two TPSMA10AHM3_B/H devices must be used in series opposition, or a dedicated bidirectional TVS such as SMAJ10A should be selected instead of the TPSMA10AHM3_B/H.
What is the maximum clamping voltage of TPSMA10AHM3_B/H under surge conditions?
The TPSMA10AHM3_B/H has a maximum clamping voltage (VC) of 27.6 V at 14.5 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value ensures downstream 3.3 V or 5 V logic circuits remain within safe operating limits during ISO 7637-2 or IEC 61000-4-5 transients, as confirmed in the official TPSMA10AHM3_B/H datasheet.
Does TPSMA10AHM3_B/H require derating at elevated ambient temperatures?
Yes, TPSMA10AHM3_B/H must be derated above TA = 25 °C per Figure 2 in its datasheet. At 125 °C ambient, its 400 W peak pulse power drops to approximately 200 W, and its 1.0 W steady-state power dissipation falls to ~0.5 W. Thermal design must account for this using the published derating curve to ensure reliable operation of the TPSMA10AHM3_B/H.
How is the polarity marked on the TPSMA10AHM3_B/H package?
The TPSMA10AHM3_B/H uses a color band (typically black or dark gray) on the cathode end of the SMA (DO-214AC) package. This marking aligns with JEDEC DO-214AC standards and must be oriented toward the system ground reference during PCB layout to ensure correct unidirectional clamping behavior of the TPSMA10AHM3_B/H.
TPSMA10AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.65V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA10AHM3_B/H FAQ
1.How can I place an order for TPSMA10AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA10AHM3_B/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 TPSMA10AHM3_B/H reliable?
The price and inventory of TPSMA10AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA10AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA10AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA10AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA10AHM3_B/H?
TPSMA10AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA10AHM3_B/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 TPSMA10AHM3_B/H?
For technical support, including TPSMA10AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA10AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA10AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA10AHM3_B/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 TPSMA10AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA10AHM3_B/H?
All TPSMA10AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA10AHM3_B/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 TPSMA10AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA10AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA10AHM3_B/H Tags
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